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ASTRONOMY AND
ASTROPHYSICS LIBRARY
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G. Börner, Garching, Germany
A. Burkert, München, Germany
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J. Lequeux, Paris, France
A. Maeder, Sauverny, Switzerland
V. Trimble, College Park, MD, and Irvine, CA, USA
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mper
G ¨ nther Hasinger (Eds.)
Tr
u
The Universe
in X-Rays
With 237 Figures, 40 in Color and 19 T ables
ABC
Joachim E.
Joachim E.
Tr
u
mper
G nther Hasinger
u
Max-Planck-Institut
f r extraterrestische Physik
85748 Garching
Germany
E-mail: jtrumper@mpe.mpg.de
grh@mpe.mpg.de
Cover illustrations: above: ROSAT all-sky survey; from Max-Planck-Institut fuer extraterrestrische
Physik; below: 15. Nov. 2006, Credit: NASA/CXC/MIT/UMass Amherst/M.D. Stage et al.
Library of Congress Control Number: 2007933496
ISSN 0941-7834
ISBN
978-3-540-34411-7 Springer Berlin Heidelberg New York
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Preface
In the early years of X-ray astronomy, one of us (J. E. T.) had always a book in reach,
entitled “X-ray Astronomy” and edited by Riccardo Giacconi and Herbert Gursky
about a decade after they had opened the field by the discovery of Scorpius X-1 and
the X-ray background. This book summarized all the knowledge at the time, based
on the results from the pioneering rocket and balloon experiments and from Uhuru,
the first satellite entirely dedicated to X-ray astronomy.
Since those early times X-ray astronomy has evolved with enormous pace. The
number of known sources has increased by a factor of thousand, but more important,
they now comprise almost all classes of astronomical objects – from planets, moons
and comets out to clusters of galaxies and quasars. In the era of multi-wavelength
astronomy X-ray observations provide insight into extreme physical conditions pre-
vailing in all these sources – very high temperatures, very strong gravitational fields,
super-nuclear densities, extreme concentrations of relativistic particles.
The intent of this book is to summarize the present status of the field, which has
become quite challenging, since the number of publications in refereed journals has
risen to more than 20 000. Therefore the coverage cannot be complete, but must
rather be representative. We apologize for omitting any important ideas, methods or
results.
The authors of the various chapters are mainly scientists working at the Max-
Planck-Institute for Extraterrestrial Physics, the home of ROSAT, or colleagues who
have been working closely with us during the last 20 years. Besides ROSAT, the
main sources of information have been the other X-ray satellites of the nineties
– ASCA, RXTE and BeppoSAX – and their more recent successors – Chandra,
XMM-Newton, INTEGRAL, Swift and Suzaku – which have used novel instru-
mentation to produce a wealth of knowledge on the universe seen at high energies.
This book addresses mainly scientists who are teaching the subject, and young
scientists entering the field, as well as astronomers from neighbouring disciplines
and physicists interested in one of the most exciting fields of astrophysics. It is or-
ganized in a straightforward way: We start with a discussion of instruments and
methods in part I and then continue in parts II and III with the status of galactic and
extragalactic X-ray astronomy respectively, ordering the contributions in a geocen-
tric fashion. In Chapter 26 a short summary of the current plans for future missions
in X-ray astronomy is given.
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