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Books > Science & Mathematics > Astronomy, space & time > Theoretical & mathematical astronomy

Life on Earth and other Planetary Bodies (Paperback, 2012 ed.): Arnold Hanslmeier, Stephan Kempe, Joseph Seckbach Life on Earth and other Planetary Bodies (Paperback, 2012 ed.)
Arnold Hanslmeier, Stephan Kempe, Joseph Seckbach
R4,302 Discovery Miles 43 020 Ships in 10 - 15 working days

A trio of editors [Professors from Austria, Germany and Israel] present Life on Earth and other Planetary Bodies. The contributors are from twenty various countries and present their research on life here as well as the possibility for extraterrestrial life. This volume covers concepts such as life's origin, hypothesis of Panspermia and of life possibility in the Cosmos. The topic of extraterrestrial life is currently 'hot' and the object of several congresses and conferences. While the diversity of "normal" biota is well known, life on the edge of the extremophiles is more limited and less distributed. Other subjects discussed are Astrobiology with the frozen worlds of Mars, Europa and Titan where extant or extinct microbial life may exist in subsurface oceans; conditions on icy Mars with its saline, alkaline, and liquid water which has been recently discovered; chances of habitable Earth-like [or the terrestrial analogues] exoplanets; and SETI's search for extraterrestrial Intelligence.

Universe Unveiled - The Cosmos in My Bubble Bath (Paperback, 2015 ed.): C. V Vishveshwara Universe Unveiled - The Cosmos in My Bubble Bath (Paperback, 2015 ed.)
C. V Vishveshwara
R1,614 R1,452 Discovery Miles 14 520 Save R162 (10%) Ships in 10 - 15 working days

"The bubbles were swirling all around me, massaging my body. As I luxuriated in this fantastic bath, .... I gasped as I realized that these were miniature galaxies bringing the whole Cosmos into my bathtub..."

Alfie is back. And so are George and other characters of the author s previous book "Einstein s Enigma or Black Holes in My Bubble Bath." The present book, "Universe Unveiled - The Cosmos in My Bubble," can be considered a sequel to the previous one. It is nontechnical and descriptive. The scientific content is presented through the discussions between Alfie, the enlightened learner and George, professor of astrophysics. Fantasies, based on these discussions that cover scientific facts, are created by the magical bubble baths taken by Alfie.

The cosmic journey begins with ancient astronomers, such as Aristarchus and Ptolemy of Greece, Aryabhata from India, and Omar Khayyam from Persia.

The foundations of the cosmos, essentially the solar system, are laid by the great scientists like Copernicus, Tycho Brahe, Kepler, Galileo, and finally Isaac Newton.

This is followed by the realm of the stars with a description of stellar evolution and its three end-products, namely the white dwarfs, neutron stars, and black holes. The final phase of the cosmic journey begins with the large-scale structure of the Universe. From the early speculations of William Herschel, we move on to Harlow Shapley, the measurer of the Milky Way. The awesome vastness of the Universe is revealed by the remarkable observations of Edwin Hubble, while the strangest cosmic phenomenon of universal expansion is discovered by Hubble and his collaborator Milton Humason, the erstwhile mule driver. The theoretical basis of modern cosmology, the space-time picture of the general theory of relativity, is elucidated by Albert Einstein himself. The final chapters deal with the most modern developments such as the exact determination of the age of the Universe, dark matter, the acceleration of the universal expansion and dark energy.

"Universe Unveiled "blends accurate science with philosophy, drama, humour and fantasy to create an exciting cosmic journey that reads like a novel and educates as it entertains."

Alpha Centauri - Unveiling the Secrets of Our Nearest Stellar Neighbor (Paperback, 2015 ed.): Martin Beech Alpha Centauri - Unveiling the Secrets of Our Nearest Stellar Neighbor (Paperback, 2015 ed.)
Martin Beech
R2,223 Discovery Miles 22 230 Ships in 10 - 15 working days

As our closest stellar companion and composed of two Sun-like stars and a third small dwarf star, Alpha Centauri is an ideal testing ground of astrophysical models and has played a central role in the history and development of modern astronomy-from the first guesses at stellar distances to understanding how our own star, the Sun, might have evolved. It is also the host of the nearest known exoplanet, an ultra-hot, Earth-like planet recently discovered. Just 4.4 light years away Alpha Centauri is also the most obvious target for humanity's first directed interstellar space probe. Such a mission could reveal the small-scale structure of a new planetary system and also represent the first step in what must surely be humanity's greatest future adventure-exploration of the Milky Way Galaxy itself. For all of its closeness, Centauri continues to tantalize astronomers with many unresolved mysteries, such as how did it form, how many planets does it contain and where are they, and how might we view its extensive panorama directly? In this book we move from the study of individual stars to the study of our Solar System and our nearby galactic neighborhood. On the way we will review the rapidly developing fields of exoplanet formation and detection.

Astrostatistics and Data Mining (Paperback, 2012 ed.): Luis Manuel Sarro, Laurent Eyer, William O'Mullane, Joris De Ridder Astrostatistics and Data Mining (Paperback, 2012 ed.)
Luis Manuel Sarro, Laurent Eyer, William O'Mullane, Joris De Ridder
R2,785 Discovery Miles 27 850 Ships in 10 - 15 working days

This volume provides an overview of the field of Astrostatistics understood as the sub-discipline dedicated to the statistical analysis of astronomical data. It presents examples of the application of the various methodologies now available to current open issues in astronomical research. The technical aspects related to the scientific analysis of the upcoming petabyte-scale databases are emphasized given the importance that scalable Knowledge Discovery techniques will have for the full exploitation of these databases. Based on the 2011 Astrostatistics and Data Mining in Large Astronomical Databases conference and school, this volume gathers examples of the work by leading authors in the areas of Astrophysics and Statistics, including a significant contribution from the various teams that prepared for the processing and analysis of the Gaia data.

Space Astronomy - The UV Window to the Universe (Paperback, 2010 ed.): Ana I G omez de Castro, Noah Brosch Space Astronomy - The UV Window to the Universe (Paperback, 2010 ed.)
Ana I G omez de Castro, Noah Brosch
R5,471 Discovery Miles 54 710 Ships in 10 - 15 working days

The field of ultraviolet astronomy offers unequalled scientific promise yet has not been blessed with a multitude of space missions (as has been the case for other spectral domains). This book contains a distillation of the community's views on the topic and the desires for future observational facilities. As such, it provides the most up-to-date information on the topic of ultraviolet astronomy from a very broad point of view, presenting a compilation of lectures given at a specialist meeting and combining theoretical arguments with observational reports and detailed instrumental information.

Babylonian Mathematical Astronomy: Procedure Texts (Paperback, 2012 ed.): Mathieu Ossendrijver Babylonian Mathematical Astronomy: Procedure Texts (Paperback, 2012 ed.)
Mathieu Ossendrijver
R4,446 Discovery Miles 44 460 Ships in 10 - 15 working days

This book contains new translations and a new analysis of the procedure texts of Babylonian mathematical astronomy, the earliest known form of mathematical astronomy of the ancient world. The translations are based on a modern approach incorporating recent insights from Assyriology and translation science.

The work contains updated and expanded interpretations of the astronomical algorithms and investigations of previously ignored linguistic, mathematical and other aspects of the procedure texts.

Special attention is paid to issues of mathematical representation and over 100 photos of cuneiform tablets dating from 350-50 BCE are presented.

In 2-3 years, theauthor intends to continue his study of Babylonian mathematicalastronomy with a new publication which will contain new editions and reconstructions of approx. 250 tabular texts and a new philological, astronomical and mathematical analysis of these texts. Tabular texts are end products of Babylonian math astronomy, computed with algorithms that are formulated in the present volume, Procedure Texts."

The Formation and Early Evolution of Stars - From Dust to Stars and Planets (Paperback, 2nd ed. 2012): Norbert S Schulz The Formation and Early Evolution of Stars - From Dust to Stars and Planets (Paperback, 2nd ed. 2012)
Norbert S Schulz
R3,340 Discovery Miles 33 400 Ships in 10 - 15 working days

Starburst regions in nearby and distant galaxies have a profound impact on our understanding of the early universe. This new, substantially updated and extended edition of Norbert Schulz's unique book "From Dust to Stars" describes complex physical processes involved in the creation and early evolution of stars. It illustrates how these processes reveal themselves from radio wavelengths to high energy X-rays and gamma-rays, with special reference towards high energy signatures. Several sections devoted to key analysis techniques demonstrate how modern research in this field is pursued and new chapters are introduced on massive star formation, proto-planetary disks and observations of young exoplanets. Recent advances and contemporary research on the theory of star formation are explained, as are new observations, specifically from the three great observatories of the Spitzer Space Telescope, the Hubble Space Telescope and the Chandra X-Ray Observatory which all now operate at the same time and make high resolution space based observing in its prime. As indicated by the new title two new chapters have been included on proto-planetary disks and young exoplanets. Many more colour images illustrate attractive old and new topics that have evolved in recent years. The author gives updates in theory, fragmentation, dust, and circumstellar disks and emphasizes and strengthens the targeting of graduate students and young researchers, focusing more on computational approaches in this edition.

Grab 'n' Go Astronomy (Paperback, 2014 ed.): Neil English Grab 'n' Go Astronomy (Paperback, 2014 ed.)
Neil English
R1,849 Discovery Miles 18 490 Ships in 10 - 15 working days

Like everyone else, most amateur astronomers live busy lives. After a long day or work or looking after young children, the last thing you want as an observer is to have to lug out a large telescope and spend an hour getting it ready before it can be used. Maybe you are going on vacation somewhere in the countryside where there are sure to be dark skies, but you don't necessarily want astronomy to dominate the trip. Or suppose you are not quite committed to owning a large telescope, but curious enough to see what a smaller, portable setup can accomplish. These are times when a small "grab 'n' go" telescope, or even a pair of binoculars, is the ideal instrument. And this book can guide you in choosing and best utilizing that equipment. What makes a telescope fall into the "grab 'n' go" category? That's easy - speed of setting up, ease of use, and above all, portability. In Part I of this book, we survey the various types of equipment, including accessories and mounts, that are available, and what it is best for what kind of viewing. Part II is about using your grab 'n' go telescope to visit a wealth and wide variety of objects. There are chapters on solar, lunar and planetary observing, as well as descriptions of many deep sky objects, including double and variable stars, planetary, emission and reflection nebulae, open and globular clusters and distant galaxies. This ambitious text is dedicated to those who love to or - because of their limited time - must observe the sky at a moment's notice, whether from the comfort of a backyard or while on business or vacation far from home. Everything you need to know is here. So get started!.

Suborbital - Industry at the Edge of Space (Paperback, 2014): Erik Seedhouse Suborbital - Industry at the Edge of Space (Paperback, 2014)
Erik Seedhouse
R1,687 Discovery Miles 16 870 Ships in 10 - 15 working days

The nascent commercial suborbital spaceflight industry will soon open the space frontier to commercial astronauts, payload specialists, scientists and of course, tourists. This book describes the tantalizing science opportunities to be offered when suborbital trips become routine within the next 12 to 18 months. It describes the difference in training and qualification necessary to become either a spaceflight participant or a fully-fledged commercial suborbital astronaut and it describes the vehicles this new class of astronauts will use.

Anticipation is on the rise for the new crop of commercial suborbital spaceships that will serve the scientific and educational market. These reusable rocket-propelled vehicles are expected to offer quick, routine and affordable access to the edge of space along with the capability to carry research and educational crew members. Yet to be demonstrated is the hoped-for flight rates of suborbital vehicles.

Quick turnaround of these craft is central to realizing the profit-making potential of repeated sojourns to suborbital heights. As this book outlines, vehicle builders still face rigorous shake-out schedules, flight safety hurdles as well as extensive trial-runs of their respective craft before suborbital space jaunts become commonplace. The book examines some of these cash and carry suborbital craft under development by such groups as Blue Origin, Masten Space Systems, Virgin Galactic and XCOR Aerospace and describes the hurdles the space industry is quickly overcoming en-route to the industry developing into a profitable economic entity.

Seedhouse also explains how the commercial suborbital spaceflight industry is planning and preparing for the challenges of marketing and financing and how it is marketing the hiring of astronauts. It examines the role of commercial operators as enablers accessing the suborbital frontier and how a partnership with governments and the private sector will eventually permanently integrate the free market s innovation of commercial suborbital space activities."

Cosmic Update - Dark Puzzles. Arrow of Time. Future History (Paperback, 2012 ed.): Fred Adams, Thomas Buchert, Laura... Cosmic Update - Dark Puzzles. Arrow of Time. Future History (Paperback, 2012 ed.)
Fred Adams, Thomas Buchert, Laura Mersini-Houghton; Edited by Farzad Nekoogar
R1,427 Discovery Miles 14 270 Ships in 10 - 15 working days

"...The Multiversal book series is equally unique, providing book-length extensions of the lectures with enough additional depth for those who truly want to explore these fields, while also providing the kind of clarity that is appropriate for interested lay people to grasp the general principles involved." - Lawrence M. Krauss Cosmic Update Covers: A novel approach to uncover the dark faces of the Standard Model of cosmology. The possibility that Dark Energy and Dark Matter are manifestations of the inhomogeneous geometry of our Universe. On the history of cosmological model building and the general architecture of cosmological modes. Illustrations on the Large Scale Structure of the Universe. A new perspective on the classical static Einstein Cosmos. Global properties of World Models including their Topology. The Arrow of Time in a Universe with a Positive Cosmological Constant. Exploring the consequences of a fundamental Cosmological Constant for our Universe. Exploring why the current observed acceleration of the Universe may not be its final destiny. Demonstrating that nature forbids the existence of a pure Cosmological Constant. Our current understanding of the long term (in time scales that greatly exceed the current age of the Universe) future of the Universe. The long term fate and eventual destruction of the astrophysical objects that populate the universe -- including clusters, galaxies, stars, planets, and black holes. The material is presented in a layperson-friendly language followed by addition technical sections that explain the basic equations and principles. This feature is very attractive to readers who want to learn more about the theories involved beyond the basic description. "Multiversal Journeys (TM) is a trademark of Farzad Nekoogar and Multiversal Journeys, a 501 (c) (3) nonprofit organization."

Hot Interstellar Matter in Elliptical Galaxies (Paperback, 2012 ed.): Dong-Woo Kim, Silvia Pellegrini Hot Interstellar Matter in Elliptical Galaxies (Paperback, 2012 ed.)
Dong-Woo Kim, Silvia Pellegrini
R4,227 Discovery Miles 42 270 Ships in 10 - 15 working days

Based on a number of new discoveries resulting from 10 years of Chandra and XMM-Newton observations and corresponding theoretical works, this is the first book to address significant progress in the research of the Hot Interstellar Matter in Elliptical Galaxies. A fundamental understanding of the physical properties of the hot ISM in elliptical galaxies is critical, because they are directly related to the formation and evolution of elliptical galaxies via star formation episodes, environmental effects such as stripping, infall, and mergers, and the growth of super-massive black holes. Thanks to the outstanding spatial resolution of Chandra and the large collecting area of XMM-Newton, various fine structures of the hot gas have been imaged in detail and key physical quantities have been accurately measured, allowing theoretical interpretations/predictions to be compared and tested against observational results. This book will bring all readers up-to-date on this essential field of research.

The Formation and Early Evolution of Stars - From Dust to Stars and Planets (Hardcover, 2nd ed. 2012): Norbert S Schulz The Formation and Early Evolution of Stars - From Dust to Stars and Planets (Hardcover, 2nd ed. 2012)
Norbert S Schulz
R4,036 Discovery Miles 40 360 Ships in 12 - 17 working days

Starburst regions in nearby and distant galaxies have a profound impact on our understanding of the early universe. This new, substantially updated and extended edition of Norbert Schulz s unique book "From Dust to Stars" describes complex physical processes involved in the creation and early evolution of stars. It illustrates how these processes reveal themselves from radio wavelengths to high energy X-rays and gamma rays, with special reference towards high energy signatures. Several sections devoted to key analysis techniques demonstrate how modern research in this field is pursued and new chapters are introduced on massive star formation, proto-planetary disks and observations of young exoplanets. Recent advances and contemporary research on the theory of star formation are explained, as are new observations, specifically from the three great observatories of the Spitzer Space Telescope, the Hubble Space Telescope and the Chandra X-Ray Observatory which all now operate at the same time and make high resolution space based observing in its prime. As indicated by the new title two newchapters have been included on proto-planetary disks and young exoplanets. Many more colour images illustrate attractive old and new topics that have evolved in recent years. The author gives updates in theory, fragmentation, dust, and circumstellar disks and emphasizes and strengthens the targeting of graduate students and young researchers, focusing more on computational approaches in this edition."

An Introduction to the Study of the Moon (Paperback, Softcover reprint of the original 1st ed. 1966): Zdenek Kopal An Introduction to the Study of the Moon (Paperback, Softcover reprint of the original 1st ed. 1966)
Zdenek Kopal
R1,541 Discovery Miles 15 410 Ships in 10 - 15 working days

After several decades spent in astronomical semi-obscurity, the Moon has of late suddenly emerged as an object of considerable interest to students of astronomy as well as of other branches of natural science and technology; and the reasons for this are indeed of historical significance. For the Moon has now been destined to be the first celestial body outside the confines of our own planet to be reconnoitered at a close range by means of spacecraft built and sent out by human hand for this purpose. At the time of writing, not less than ten such spacecraft of American as well as Rus sian origin landed already on different parts of the lunar surface; and some of these provided remarkable records of its detail structure to a spatial resolution increased thousandfold over that attained so far from our ground-based facilities. A renewed interest in our satellite, stemming from this source, on the part of the students of many branches of science and technology has also underlined the need for presenting the gist of our present knowledge in this field in the form that could serve as an introduction to the study of the Moon not only for astronomers, but also for serious students from other branches of science or technology.

Measuring the Angular Momentum of Supermassive Black Holes (Paperback, 2013 ed.): Laura Brenneman Measuring the Angular Momentum of Supermassive Black Holes (Paperback, 2013 ed.)
Laura Brenneman
R1,589 Discovery Miles 15 890 Ships in 10 - 15 working days

Measuring the spin distribution of supermassive black holes is of critical importance for understanding how these black holes and their host galaxies form and evolve over time, yet this type of study is only in its infancy. This brief describes how astronomers measure spin in supermassive black holes using X-ray spectroscopy. It also reviews the constraints that have been placed on the spin distribution in local, bright active galaxies over the past six years, and the cosmological implications of these constraints. Finally, it summarizes the open questions that remain in this exciting new field of research and points toward future discoveries soon to be made by the next generation of space-based observatories.

The Dark Universe - Matter, Energy and Gravity (Paperback): Mario Livio The Dark Universe - Matter, Energy and Gravity (Paperback)
Mario Livio
R1,292 Discovery Miles 12 920 Ships in 12 - 17 working days

This book reviews the findings on the composition of the universe, its dynamics, and the implications of both for the evolution of large-scale structure and for fundamental theories of the universe. With each chapter written by a leading expert in the field, topics include massive compact halo objects, the oldest white dwarfs, hot gas in clusters of galaxies, primordial nucleosynthesis, modified Newtonian dynamics, the cosmic mass density, the growth of large-scale structure, and a discussion of dark energy. This book is an invaluable resource for both professional astronomers and graduate students.

High-Energy Emission from Pulsars and their Systems - Proceedings of the First Session of the Sant Cugat Forum on Astrophysics... High-Energy Emission from Pulsars and their Systems - Proceedings of the First Session of the Sant Cugat Forum on Astrophysics (Paperback, 2011 ed.)
Nanda Rea, Diego F. Torres
R8,179 Discovery Miles 81 790 Ships in 10 - 15 working days

The aim of the inaugural meeting of the Sant Cugat Forum on Astrophysics was to address, in a global context, the current understanding of and challenges in high-energy emissions from isolated and non-isolated neutron stars, and to confront the theoretical picture with observations of both the Fermi satellite and the currently operating ground-based Cherenkov telescopes. Participants have also discussed the prospects for possible observations with planned instruments across the multi-wavelength spectrum (e.g. SKA, LOFAR, E-VLT, IXO, CTA) and how they will impact our theoretical understanding of these systems. In keeping with the goals of the Forum, this book not only represents the proceedings of the meeting, but also a reflection on the state-of-the-art in the topic.

Electrifying Atmospheres: Charging, Ionisation and Lightning in the Solar System and Beyond (Paperback, 2013 ed.): Karen Aplin Electrifying Atmospheres: Charging, Ionisation and Lightning in the Solar System and Beyond (Paperback, 2013 ed.)
Karen Aplin
R1,612 Discovery Miles 16 120 Ships in 10 - 15 working days

Electrical processes take place in all planetary atmospheres. There is evidence for lightning on Venus, Jupiter, Saturn, Uranus and Neptune, it is possible on Mars and Titan, and cosmic rays ionise every atmosphere, leading to charged droplets and particles. Controversy surrounds the role of atmospheric electricity in physical climate processes on Earth; here, a comparative approach is employed to review the role of electrification in the atmospheres of other planets and their moons. This book reviews the theory, and, where available, measurements, of planetary atmospheric electricity, taken to include ion production and ion-aerosol interactions. The conditions necessary for a global atmospheric electric circuit similar to Earth s, and the likelihood of meeting these conditions in other planetary atmospheres, are briefly discussed. Atmospheric electrification is more important at planets receiving little solar radiation, increasing the relative significance of electrical forces. Nucleation onto atmospheric ions has been predicted to affect the evolution and lifetime of haze layers on Titan, Neptune and Triton. For planets closer to Earth, heating from solar radiation dominates atmospheric circulations. Mars may have a global circuit analogous to the terrestrial model, but based on electrical discharges from dust storms, and Titan may have a similar global circuit, based on transfer of charged raindrops. There is an increasing need for direct measurements of planetary atmospheric electrification, in particular on Mars, to assess the risk for future unmanned and manned missions. Theoretical understanding could be increased by cross-disciplinary work to modify and update models and parameterisations initially developed for a specific atmosphere, to make them more broadly applicable to other planetary atmospheres. The possibility of electrical processes in the atmospheres of exoplanets is also discussed."

The Adventurous Life of Friedrich Georg Houtermans, Physicist (1903-1966) (Paperback, 2012 ed.): Edoardo Amaldi The Adventurous Life of Friedrich Georg Houtermans, Physicist (1903-1966) (Paperback, 2012 ed.)
Edoardo Amaldi; Edited by Saverio Braccini, Antonio Ereditato, Paola Scampoli
R1,432 Discovery Miles 14 320 Ships in 10 - 15 working days

The physicist Friedrich Houtermans (1903-1966) was an essential promoter and proponent of the development of physics in Berne. He introduced a number of activities in the field of elementary particles, with a special focus on the physics of cosmic rays, and important contributions in applied physics. This biography of Houtermans was written by Edoardo Amaldi and was almost finished just before his unexpected death in 1989. The editors have only corrected typographical errors and have introduced only minimal text changes in order to preserve the original content. Additionally they have collected and included unpublished pictures and memories from Houtermans' students and collaborators. The text is the result of a thorough and intensive study on Houtermans' life and character carried out by Edoardo Amaldi. It is more than a biography, since the figure of Houtermans is set in a historical perspective of Europe between the two world wars. This book will be of great interest to historians and historians of science.

Magnetospheric Plasma Sources and Losses - Final Report of the ISSI Study Project on Source and Loss Processes (Paperback,... Magnetospheric Plasma Sources and Losses - Final Report of the ISSI Study Project on Source and Loss Processes (Paperback, Softcover reprint of the original 1st ed. 1999)
Bengt Hultqvist, Marit Oieroset, Goetz Paschmann, Rudolf Treumann
R5,487 Discovery Miles 54 870 Ships in 10 - 15 working days

The present sixth volume of ISSI Space Sciences Series is the outcome of the most ambitious study project of ISSI hitherto, that on 'Source and Loss Processes of Magnetospheric Plasma'. The goal has been to produce a fully integrated book on the subject, which gives an authoritative overview of all aspects of the topic in a well organized form, useful and readable both for active researchers in the field and for young scientists who are starting their research in space physics. In order to represent the full diversity of experience and perspective that exists in the science community, some 50 leading scientists from allover the world were invited to participate in the project and contribute to the text. With the scientific competence well in hand, the dominating problem in producing the book has been to achieve a degree of consistency in style, nomenclature, notations and format, as well as good cross referencing. To what degree we have succeeded in reaching our goal of delivering a volume that will be useful to the community in both its comprehensiveness and readability remains to be decided by the readers. The book is the outcome of a three year long process. In December 1995 the study project on 'Source and Loss Processes of Magnetospheric Plasma' was se lected by ISSI after consultations with several groups of senior representatives of the space physics community."

Statistics, Data Mining, and Machine Learning in Astronomy - A Practical Python Guide for the Analysis of Survey Data, Updated... Statistics, Data Mining, and Machine Learning in Astronomy - A Practical Python Guide for the Analysis of Survey Data, Updated Edition (Hardcover, Revised edition)
Zeljko Ivezic, Andrew J. Connolly, Jacob T. VanderPlas, Alexander Gray
R1,935 Discovery Miles 19 350 Ships in 12 - 17 working days

Statistics, Data Mining, and Machine Learning in Astronomy is the essential introduction to the statistical methods needed to analyze complex data sets from astronomical surveys such as the Panoramic Survey Telescope and Rapid Response System, the Dark Energy Survey, and the Large Synoptic Survey Telescope. Now fully updated, it presents a wealth of practical analysis problems, evaluates the techniques for solving them, and explains how to use various approaches for different types and sizes of data sets. Python code and sample data sets are provided for all applications described in the book. The supporting data sets have been carefully selected from contemporary astronomical surveys and are easy to download and use. The accompanying Python code is publicly available, well documented, and follows uniform coding standards. Together, the data sets and code enable readers to reproduce all the figures and examples, engage with the different methods, and adapt them to their own fields of interest. An accessible textbook for students and an indispensable reference for researchers, this updated edition features new sections on deep learning methods, hierarchical Bayes modeling, and approximate Bayesian computation. The chapters have been revised throughout and the astroML code has been brought completely up to date. Fully revised and expanded Describes the most useful statistical and data-mining methods for extracting knowledge from huge and complex astronomical data sets Features real-world data sets from astronomical surveys Uses a freely available Python codebase throughout Ideal for graduate students, advanced undergraduates, and working astronomers

Solar History - An Introduction (Paperback, 2013 ed.): Claudio Vita-Finzi Solar History - An Introduction (Paperback, 2013 ed.)
Claudio Vita-Finzi
R1,413 Discovery Miles 14 130 Ships in 10 - 15 working days

Beyond the four centuries of sunspot observation and the five decades during which artificial satellites have monitored the Sun that is to say for 99.99999% of the Sun 's existence our knowledge of solar history depends largely on analogy with kindred main sequence stars, on the outcome of various kinds of modelling, and on indirect measures of solar activity. They include the analysis of lunar rocks and meteorites for evidence of solar flares and other components of the solar cosmic-ray (SCR) flux, and the measurement of cosmogenic isotopes in wood, stratified ice and marine sediments to evaluate changes in the galactic cosmic-ray (GCR) flux and thus infer changes in the sheltering magnetic fields of the solar wind. In addition, shifts in the global atmospheric circulation which appear to result from cyclic fluctuations in solar irradiance have left their mark in river sediments and in the isotopic composition of cave deposits. In this volume the results these sources have already produced have been summarised, paying special attention to those that reflect processes in different parts of the Sun 's interior and that display periodicities and trends which may enable us to forecast future large-scale environmental changes.

On the Formation of the Most Massive Stars in the Galaxy (Paperback, 2012 ed.): Roberto J. Galvan-Madrid On the Formation of the Most Massive Stars in the Galaxy (Paperback, 2012 ed.)
Roberto J. Galvan-Madrid
R1,423 Discovery Miles 14 230 Ships in 10 - 15 working days

The most massive stars in the galaxy - those with more than 15 to 20 solar masses - are lilkely to ionize their surroundings before they reach their final mass. How can they accrete in spite of the presence of over-pressurized gas?
This thesis presents results of Submillimeter Array (SMA) and Very Large Array (VLA) studies of massive star formation regions in the early stages of ionization, as well as an analysis of numerical simulations of the evolution of these young HII regions. The results favor a picture in which very massive stars form in accretion flows that are partially ionized and that keep accreting material from their environment.

The Mathematics of Radiative Transfer (Paperback): I.W. Busbridge The Mathematics of Radiative Transfer (Paperback)
I.W. Busbridge
R1,202 Discovery Miles 12 020 Ships in 12 - 17 working days

This tract gives a simple but rigorous treatment of some of the mathematical problems that arise in the theory of the transfer of radiation through the atmosphere of a star. Similar problems occur in the theory of the diffusion of neutrons and in the study of temperature-wave flow in solids; so the solutions found in one theory can often be applied in the others. Dr Busbridge's starting-point is the equation of transfer. The first section provides the auxiliary mathematics, and the second discusses the Milne equations. Some unsolved and incompletely solved problems are considered in an appendix. The language and notation of astrophysics is used throughout, for brevity and simplicity, but translation into other notations is usually fairly easy. Over the years the subject had grown considerably, and several outstanding problems have been solved, though the total amount of rigorous work is small. This tract will help to clear up confusions which exist and will provide an introduction to some of the more powerful mathematical techniques available.

Relativity and the Question of Discretization in Astronomy (Paperback, Softcover reprint of the original 1st ed. 1970): Dominic... Relativity and the Question of Discretization in Astronomy (Paperback, Softcover reprint of the original 1st ed. 1970)
Dominic G.B. Edelen, A G Wilson
R1,441 Discovery Miles 14 410 Ships in 10 - 15 working days

Theoretical researches in general relativity and observational data from galactic astronomy combine in this volume in contributions to one of the oldest questions of natural philosophy: Is the structure of the physical world more adequately described by a continuous or a discrete mode of representation? Since the days of the Pythagoreans, this question has surfaced from time to time in various guises in science as well as in philosophy. One of the most bitterly contested and illuminating controversies between the continuous and the discrete viewpoints is to be found in the wave versus corpuscular description of optical phenom enae. This controversy was not resolved to the satisfaction of most of its protaganists until the development of the quantum theory. However, several obscurities that still becloud the question suggest that some deeper formulation may be necessary before more satisfactory answers can be given 1. The firm establishment of the validity of quantized structure and discrete energy distributions on the atomic scale following the ideas of Max Planck, together with the apparent absence of quan tization effect in astronomical and cosmic structures leaves uncertainties concerning the role played by the scale of the observer in perceiving or not perceiving discrete distributions. Some of the metaphysical inter pretations and implications of the quantum mechanics that have been made in recent years 2 would be subject to revision if the existence of discretized descriptions were to be established in astronomical and cosmic structures."

From Eudoxus to Einstein - A History of Mathematical Astronomy (Paperback): C.M. Linton From Eudoxus to Einstein - A History of Mathematical Astronomy (Paperback)
C.M. Linton
R2,479 Discovery Miles 24 790 Ships in 12 - 17 working days

Since man first looked towards the heavens, a great deal of effort has been put into trying to predict and explain the motions of the sun, moon and planets. Developments in man's understanding have been closely linked to progress in the mathematical sciences. Whole new areas of mathematics, such as trigonometry, were developed to aid astronomical calculations, and on numerous occasions throughout history, breakthroughs in astronomy have only been possible because of progress in mathematics. This book describes the theories of planetary motion that have been developed through the ages, beginning with the homocentric spheres of Eudoxus and ending with Einstein's general theory of relativity. It emphasizes the interaction between progress in astronomy and in mathematics, showing how the two have been inextricably linked since Babylonian times. This valuable text is accessible to a wide audience, from amateur astronomers to professional historians of astronomy.

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