|
Showing 1 - 2 of
2 matches in All Departments
This book uses new data from the very low radio frequency telescope
LOFAR to analyse the magnetic structure in the giant radio galaxy
NGC6251. This analysis reveals that the magnetic field strength in
the locality of this giant radio galaxy is an order of magnitude
lower than in other comparable systems. Due to the observational
limitations associated with capturing such huge astrophysical
structures, giant radio galaxies are historically a poorly sampled
population of objects; however, their preferential placement in the
more rarefied regions of the cosmic web makes them a uniquely
important probe of large-scale structures. In particular, the
polarisation of the radio emissions from giant radio galaxies is
one of the few tools available to us that can be used to measure
magnetic fields in regions where the strength of those fields is a
key differentiator for competing models of the origin of cosmic
magnetism. Low frequency polarisation data are crucial for detailed
analyses of magnetic structure, but they are also the most
challenging type of observational data to work with. This book
presents a beautifully coupled description of the technical and
scientific analysis required to extract valuable information from
such data and, as the new generation of low frequency radio
telescopes reveals the larger population of giant radio galaxies,
it offers a significant resource for future analyses.
This book uses new data from the very low radio frequency telescope
LOFAR to analyse the magnetic structure in the giant radio galaxy
NGC6251. This analysis reveals that the magnetic field strength in
the locality of this giant radio galaxy is an order of magnitude
lower than in other comparable systems. Due to the observational
limitations associated with capturing such huge astrophysical
structures, giant radio galaxies are historically a poorly sampled
population of objects; however, their preferential placement in the
more rarefied regions of the cosmic web makes them a uniquely
important probe of large-scale structures. In particular, the
polarisation of the radio emissions from giant radio galaxies is
one of the few tools available to us that can be used to measure
magnetic fields in regions where the strength of those fields is a
key differentiator for competing models of the origin of cosmic
magnetism. Low frequency polarisation data are crucial for detailed
analyses of magnetic structure, but they are also the most
challenging type of observational data to work with. This book
presents a beautifully coupled description of the technical and
scientific analysis required to extract valuable information from
such data and, as the new generation of low frequency radio
telescopes reveals the larger population of giant radio galaxies,
it offers a significant resource for future analyses.
|
You may like...
Loot
Nadine Gordimer
Paperback
(2)
R398
R330
Discovery Miles 3 300
|
Email address subscribed successfully.
A activation email has been sent to you.
Please click the link in that email to activate your subscription.