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Books > Science & Mathematics > Astronomy, space & time
Prominences are amazing objects of great beauty whose formation,
basic structure and eruption represent one of the basic unsolved
problems in Solar Physics. It is now 14 years since the last book
on prominences appeared (Tandberg-Hanssen, 1974), during which time
much progress in our knowledge of the physics of prominences has
been made, and so the time is ripe for a new text book which it is
hoped will be a helpful summary of the subject for students,
postdocs and solar researchers. Indeed, the last few years has seen
an upsurge in interest in prominences due to high resolution
ground-and space-based observations and advances in theory. For
example, an IAU colloquium was held in Oslo (Jensen et al, 1978), a
Solar Maximum Mission Workshop took place at Goddard Space Right
Center (poland, 1986), an IAU Colloquium is planned in Yugoslavia
in September 1989 in prominences and it is expected that the SOHO
satellite will be a further stimulus to prominence research. In
November 1987 a Workshop on the Dynamics and Structure of Solar
Prominences was held in Palma Mallorca at the invitation of Jose
Luis Ballester with the aim of bringing observers and theorists
together and having plenty of time for in-depth discussions of the
basic physics of promi nences."
Adriaan Blaauw; Emeritus Professor of Astronomy at the Universities
of Groningen and Leiden, former Directo.r of the Kapteyn Laboratory
and of the European Southern Observatory, celebrated his 70th
anniversary on 12 April 1984. To mark this event, an international
Symposium was con- vened on the subject "Birth and Evolution of
Massive Stars and Stellar Groups", a subject which has played the
leading role in Blaauw's scien- tific research. The present volume
contains the Scientific Proceedings of that Symposium. The meeting
was organized by a Committee consisting of: W.H.W.M. Boland
(Secretary), W.N. Brouw, W.B. Burton, E.P.J. van den Heuvel, H. van
der Laan and H. van Woerden (Chairman). Together, these six persons
represented the Executive Committees of the Netherlands Foundation
for Astronomical Research (ASTRON) and the Netherlands Foundation
for Radio Astronomy (RZM), two organizations in which Blaauw has
held key offices. The scientific program was planned in full
consultation with Adri- aan Blaauw himself. Only section 5, "A
profile of Adriaan Blaauw", was kept secret to him. The other four
sections: Structure of star-forming regions, Stellar content of
young groups, Evolution of massive stars, and Extragalactic
perspective on star formation, each represent an im- portant aspect
of the overall theme of the Symposium. The program in- cluded 6
major review papers, 18 invited papers, 17 contributed papers, some
of which were given as posters, and ample time for discussion.
The Third Microquasar Workshop (or the 'Fifth' Workshop on Galactic
Relativ istic Jet Sources), was held in Granada, Andalucia (Spain)
on 11-13 September 2000. The aim of this workshop in Granada,
following the previous Microquasar Workshops in Greenbelt (1997)
and Paris (1998) and the Workshops on galactic sources with
relativistic jets in Jodrell Bank (1996) and Milton Keynes (1998),
was to focus on the theoretical and observational aspects of
microquasars. The study of microquasars, the sources in our Galaxy
displaying powerful re lativistic jets, is a rapidly advancing
field in astrophysics. The new instrumentation on ground (MERLIN,
SCUBA, VLA, VLT) and aboard satellites (ASCA, BSAX, ISO, IXAE and
RXTE) has provided important results, and much more is expected to
come from Chandra and XMM-Newton. In the further future, powerful
instru mentation will come online in the sub-mm (ALMA) and
gamma-rays (INTEG RAL), extending our coverage to important regions
for the study of microquasars. Energy transport via relativistic
jets is one of the most important physical mechan isms taking place
in compact objects. Large efforts have been devoted to properly
understand the disk-jet connection, and even the effects of
rotation or magnetic fields. Several new important advances have
been made recently, both from the point of view of the theoretical
treatment of jets and the different new observational tests."
The aim of this volume of scientific essays is twofold. On the
one hand, by remembering the scientific figure of Eduardo R.
Caianiello, it aims at focusing on his outstanding contributions -
from theoretical physics to cybernetics - which after so many years
still represent occasion of innovative paths to be fruitfully
followed. It must be stressed the contribution that his
interdisciplinary methodology can still be of great help in
affording and solving present day complex problems. On the other
hand, it aims at pinpointing with the help of the scientists
contributing to the volume - some crucial problems in present day
research in the fields of interest of Eduardo Caianiello and which
are still among the main lines of investigation of some of the
Institutes founded by Eduardo (Istituto di Cibernetica del CNR,
IIAS, etc).
This book represents the proceedings from the NATO sponsored
Advanced Research Workshop entitled "Observational Tests of
Inflation" held at the University of Durham, England on the
10th-14th December, 1990. In recent years, the cosmological
inflation model has drawn together the worlds of particle physics,
theoretical cosmology and observational astronomy. The aim of the
workshop was to bring together experts in all of these fields to
discuss the current status of the inflation theory and its
observational predictions. The simplest inflation model makes clear
predictions which are testable by astronomical observation.
Foremost is the prediction that the cosmological density parameter,
no, should have a value negligibly different from the critical,
Einstein-de Sitter value of 00=1. The other main prediction is that
the spectrum of primordial density fluctuations should be Gaussian
and take the Harrison-Zeldovich form. The prediction that n =l, in
patticular, leads to several important consequences o for
cosmology. Firstly, there is the apparent contradiction with the
limits on baryon density from Big Bang nucleosynthesis which has
led to the common conjecture that weakly interacting particles
rather than baryons may form the dominant mass constituent of the
Universe. Secondly, with n =l, the age of the Universe is
uncomfortably short if o the Hubble constant and the ages of the
oldest star clusters lie within their currently believed limits.
This book contains a set of articles based on a session of the
annual meeting of the American Association for the Advancement of
Science held in San Francisco in February, 1974. The reason for the
meeting arose from the need to communicate to the largest possible
scientific community the dramatic advances which have been made in
recent years in the understanding of collapsed objects: neutron
stars and black holes. Thanks to an unprecedented resonance between
X-ray, y-ray, radio and optical astronomy and important new
theoretical developments in relativistic astro physics, a new deep
understanding has been acquired of the physical processes oc
curring in the late stages of evolution of stars. This knowledge
may be one of the greatest conquests of man's understanding of
nature in this century. This book aims to give an essential and
up-to-date view in this field. The analysis of the physics and
astrophysics of neutron stars and black holes is here attacked from
both theoretical and experimental points of view. In the
experimental field we range from the reviews and catalogues of
galactic X-ray sources (R. Gursky and E. Schreier) and pulsars (E.
Groth) to the observations of the optical counter part of X-ray
sources (P. Boynton) to finally the recently discovered gamma-ray
bursts (I. Strong) and pulse astronomy R. B. Partridge)."
This book addresses supergravity and supergravity-motivated
effective field theories in the context of cosmological model
building. Extracting information about quintessence from string
theory has attracted much attention in the past few years. The
question became more urgent very recently after the possibility of
obtaining de Sitter space was called into question. Therefore,
there is an interesting debate as to whether de Sitter space or,
even, quintessence can be derived from a fundamental theory, string
theory or otherwise. This is a very active field of research, and
the topics covered in the book render this work very timely.
Throughout the book, special care has been taken in demonstrating
historical relevance of the field and describing the set of open
questions motivating the state-of-the-art research. The first few
chapters in each part provide a detailed review of standard
perturbative and non-perturbative techniques in supergravity model
building, as a way to prepare the reader for the more technical and
original subsequent chapters. These early chapters also represent a
self-contained review that would be useful for anyone planning to
enter this challenging area of study. The subsequent chapters
detail research in supergravity-motivated effective field theories,
in the first part, and supergravity models, in the second part. One
of the important conclusions in this book is that modelling
quintessence in perturbative string theory is at least as
challenging as modelling de Sitter, placing the wider programme on
a collision course with observations.
The main purpose of this book is to introduce the reader to the
subject of solar activity and the connection with Earth's climate.
It commences with a brief review of the historical progress on the
understanding of the solar-terrestrial connection and moves on to
an objective scrutiny of the various hypothesis. The text focuses
on how knowledge about the solar cycle and Earth's climate is
obtained. It includes discussion of observations, methods and the
physics involved, with the necessary statistics and analysis also
provided, including an examination of empirical relations between
sunspots and the Earth's climate. The author reviews plausible
physical mechanisms involved in any links between the solar cycle
and the Earth's climate, emphasizing the use of established
scientific methods for testing hypothesized relationships.
This volume contains the papers and discussions at IAU Colloquium
No. 21 on Variable Stars in Globular Clusters and in Related
Systems held in Toronto on the 29th, 30th and 31st August 1972. It
was the intention of the organizers that this meeting should honour
the life long work in this field of Professor Helen Sawyer Hogg.
She has been continuously active in observational research on
variables in globular clusters for 46 years and her catalogues and
bibliographies as well as her research papers, review articles and
IA U reports as chairman of the committee on variable stars in
clusters are of fundamental importance to all workers in this
field. The scope of the colloquium covered both observational and
theoretical aspects of the problem, including the relationship of
variables to non-variable cluster members, the position of the
variables in the HR diagram and their importance for problems of
stellar evolution, empirical data on the variables, periods and
period changes, and the relevant parts of pulsation theory. The
meeting was particularly successful in bringing together observers
and theorists. It will have achieved its object if it has shown
both observers and theorists which are the problems most suitable
for attack at the present time. The meeting clearly demonstrated
the great importance of research on variables in globular clusters
and related systems for our understanding both of stellar evolution
and stellar pulsation.
"Revolution and Pedagogy" explores the tensions between and within
the processes of revolutionary pedagogical change and continuity.
Focusing on those enacting pedagogical contexts, E. Thomas Ewing's
collection provides an innovative and sophisticated exploration of
complex directions and forces. These revolutions include the
struggle for independence in the Philippines, the Russian
revolution that led to communist Soviet Union, the Egyptian
campaigns against British colonial authority, the development of
Kurdish national identity in the context of Turkey's modernization,
radical and reformist educational movements in Western Europe and
the Americas, the Palestinian struggle for self-determination, and
the contemporary debate over national and religious identity in
India. "Revolution and Pedagogy" examines conventional topics such
as school policies and curriculum content, as well as more
non-traditional pedagogies such as public celebrations of holidays,
participation in international exchange programs, and the
incarceration of political activists. The geographically diverse
contributors from a wide range of disciplinary approaches produce
interdisciplinary and transnational perspectives on education and
revolution.
This book, which has been in the making for some eighteen years,
would never have begun were it not for Dr. David Dewhirst in 1976
kindly having shown the author a packet of papers in the archives
of the Cambridge Obser vatories. These letters and miscellaneous
papers of Fearon Fallows sparked an interest in the history of the
Royal Observatory at the Cape of Good Hope which, after the
diversion of producing several books on later phases of the
Observatory, has finally resulted in a detailed study of the origin
and first years of the Observatory's life. Publication of this book
coincides with the 175th anniversary of the founding of the Royal
Observatory, e.G.H. Observatories are built for the use of
astronomers. They are built through astronomers, architects,
engineers and contractors acting in concert (if not always in
harmony). They are constructed, with whatever techniques and skills
are available, from bricks, stones and mortar; but their
construction may take a toll of personal relationships, patience,
and flesh and blood."
The aim of this Advanced Study Institute was to give an account on
the most recent results obtained in solar research. Bucharest was
chosen to host it, because the capital city of Romania was located
right in the middle of the totality path of the last eclipse of the
millennium, on 11th August 1999; furthermore the phenomenon was
close to reach there its longest duration: 2m 23s. Such a total
eclipse is not only a very spectacular event which draws the
crowds: to astronomers, solar eclipses still offer the best
conditions for observing the lower part of the corona. The Sun
plays a crucial role in our very existence. It was responsible for
the formation of the Earth, and rendered this planet fit to host
living beings, providing the right amount of heat, and this for a
long enough span of time. Quite understandably, it has always been
a prime target of human curiosity, and more recently one of
scientific investigation. During the last century, it was realized
that the Sun is a star like billions of others; we learned since
that it draws its energy from the nuclear fusion of hydrogen, and
we are now able to estimate its age and life expectancy.
Introd uction The problem of integrability or nonintegrability of
dynamical systems is one of the central problems of mathematics and
mechanics. Integrable cases are of considerable interest, since, by
examining them, one can study general laws of behavior for the
solutions of these systems. The classical approach to studying
dynamical systems assumes a search for explicit formulas for the
solutions of motion equations and then their analysis. This
approach stimulated the development of new areas in mathematics,
such as the al gebraic integration and the theory of elliptic and
theta functions. In spite of this, the qualitative methods of
studying dynamical systems are much actual. It was Poincare who
founded the qualitative theory of differential equa tions.
Poincare, working out qualitative methods, studied the problems of
celestial mechanics and cosmology in which it is especially
important to understand the behavior of trajectories of motion,
i.e., the solutions of differential equations at infinite time.
Namely, beginning from Poincare systems of equations (in connection
with the study of the problems of ce lestial mechanics), the
right-hand parts of which don't depend explicitly on the
independent variable of time, i.e., dynamical systems, are studied.
Galaxies have a history. This has become clear from recent sky
surveys which have shown that distant galaxies, formed early in the
life of the Universe, differ from the nearby ones. New
observational windows at ultraviolet, infrared and millimetric
wavelengths (provided by ROSAT, IRAM, IUE, IRAS, ISO) have revealed
that galaxies contain a wealth of components: very hot gas, atomic
hydrogen, molecules, dust, dark matter ...
A significant advance is expected due to new instruments (VLT,
FIRST, XMM) which will allow one to explore the most distant
Universe. Three Euroconferences have been planned to punctuate this
new epoch in galactic research, bringing together specialists in
various fields of Astronomy.
MUL.APIN, written sometime before the 8th century BC, was the most
widely copied astronomical text in ancient Mesopotamia: a
compendium including information such as star lists, descriptions
of planetary phases, mathematical schemes for the length of day and
night, a discussion of the luni-solar calendar and rules for
intercalation, and a short collection of celestial omens. This book
contains an introductory essay, followed by a new edition of the
text and a facing-page transliteration and English translation.
Finally, the book contains a new and detailed commentary on the
text. This is a fascinating study, and an important resource for
anyone interested in the history of astronomy.
The Workshop "Optical Detectors for Astronomy" was held during
October 8-10, 1996 at the headquarters of the European Southern
Observatory in Garching, Germany. This was the third meeting of its
kind, previous meetings being held in 1991 and 1993, but this is
the first ESO "CCD Workshop" that has published proceedings. Most
of the leading manufacturers and major astronomical observatories
were represented, with the 117 attendees coming together from 14
different countries that spanned every continent on Earth. The
motivation for the ESO CCD Workshop series is the creation of
informal and open venue of information exchange about astronomical
CCD detectors and systems. Judging from the reaction and feedback
of the participants, the 1996 workshop was as successful as the
previous editions, which is a credit to all who attended. The
Workshop was organized as a mixture of invited talks, oral
presentations, poster sessions and roundtable discussions, the
latter used to foster a free exchange of ideas among participants.
These technical sessions were complemented by an opening reception
and a congenial evening in downtown Munich, which included a
walking tour of the historic area followed by dinner at the famous
Franziskaner brewery and an after dinner talk by Walter Kosonocky,
who reviewed the history of CCD technology.
This book is a comprehensive advancement about the understanding of
the volcanology of Mars in all its aspects, from its primary
formation to its evolution in time, from the smaller structures to
the bigger structures. It discusses the implications of volcanism
in the general environmental and geological context of Mars. The
book is validating the Southern Giant Impact Hypothesis explaining
the formation of Mars in an interdisciplinary approach, including
mineralogical, geochemical, volcanological as well as
geomorphological information. Implications for future explorations
in terms of resources are provided. This book serves as a textbook
for undergraduate and graduate level to foster new basic research
in the field of planetary volcanology and is a new guide for future
missions toward a volcanic world, including new detailed
information for the general audience who is always keen to know
more about the history of Mars and its large volcanoes. The book
also presents an updated situation about the water resources of the
planet.
In the past decade, indirect (Doppler) imaging techniques have
opened up a whole new discipline in stellar astronomy, providing
increasingly detailed photometric, magnetic, and chemical
inhomogeneity images of stellar surfaces. Furthermore, new optical
interferometers are already being used with sophisticated
interferometer techniques to image stellar surface structures more
directly, and in the future the ESO VLT Interferometer and other
instruments will extend these capabilities enormously. These
developments are highlighted in the first two sections of this
book. The large number of recent results, ground-based and
space-based, and the lack of a generally accepted dynamo theory
with predictive power for the stars and the Sun, result in an
ever-growing complexity of interpretation of individual results.
The IAU Symposium 176 on Stellar Surface Structure' consequently
focused on spatially resolved stellar observations throughout the
H-R diagram, from O- and B-stars to late M-stars. Two further
sections in this book summarize the current observational data on
surface inhomogeneities in stellar photospheres, chromospheres, and
coronae. Finally, a special section is devoted to next generation
model atmospheres.
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