Astrophysics On The Threshold Of The 21st Century
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Astrophysics On The Threshold Of The 21st Century
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Author : N. S. Kardashev
language : en
Publisher: Taylor & Francis
Release Date : 1992
Astrophysics On The Threshold Of The 21st Century written by N. S. Kardashev and has been published by Taylor & Francis this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Science categories.
Reports on the current status of some of the major problems in astrophysics, such as solar and solar-system physics, the physics of different scales of astronomical objects, the evolution of the universe, and the search for extraterrestrial life. The 22 reviews also include reminiscences on the history of the discipline in the Soviet Union, and speculations on its course over the next century. Translated from the Russian. Annotation copyrighted by Book News, Inc., Portland, OR
Literature 1992 Part 1
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Author : Astronomisches Recheninstitut
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-11-11
Literature 1992 Part 1 written by Astronomisches Recheninstitut and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-11-11 with Science categories.
"Astronomy and Astrophysics Abstracts" appearing twice a year has become oneof the fundamental publications in the fields of astronomy, astrophysics andneighbouring sciences. It is the most important English-language abstracting journal in the mentioned branches. The abstracts are classified under more than a hundred subject categories, thus permitting a quick survey of the whole extended material. The AAA is a valuable and important publication for all students and scientists working in the fields of astronomy and related sciences. As such it represents a necessary ingredient of any astronomical library all over the world.
The Nuclei Of Normal Galaxies
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Author : R. Genzel
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
The Nuclei Of Normal Galaxies written by R. Genzel and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
Our Galactic center's proximity allows astronomers to study physical pro cesses within galactic nuclei at a level of detail that will never be possible in the more distant, but usually also more spectacular, extragalactic systems. Recent advances in instrumentation from the radio, through the submillime ter and infrared wavebands, and out to the X- and "'(-ray bands now allow observations of the Galactic Center over thirteen orders of magnitude in wave length. Our knowledge about the central few hundred parsecs of our Galaxy has consequently increased vastly over the past decade. The same new instru ments provide high resolution, high quality measurements of nearby ''normal'' galactic nuclei; that is, nuclei whose modest energy output is comparable to that of our own (and most other) galaxies. Theorists, spurred in part by the new observations, have been able to refine models of the energetics, dynam ics, and evolution of the gas and stellar systems deep within galactic nuclei.
Frontiers Of Space And Ground Based Astronomy
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Author : Willem Wamsteker
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Frontiers Of Space And Ground Based Astronomy written by Willem Wamsteker and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
ROSAT Observations G. HASINGER Max-Planck-Institut flir extraterrestrische Physik, D-85740 Garching, Germany Abstract. This review describes the most recent advances in the study of the extragalactic soft X-ray background and what we can learn about its constituents. The deepest pointed observations with the ROSAT PSPC are discussed. The logN-logS relation is presented, which reaches to the faintest X-ray fluxes and to the highest AGN surface densities ever achieved. The N(>S) relation shows a 2 density in excess of 400 deg- at the faintest fluxes and a flattening below the Einstein Deep Survey limit. About 60% of the extragalactic background has been resolved in the deepest field. Detailed source spectra and first optical and radio identifications will be discussed. The results are put into perspective of the higher energy X -ray background. Key words: X-rays, background radiations, active galactic nuclei. 1. Introduction The extragalactic X-ray background (XRB), discovered about 30 years ago, has been studied extensively with many X-ray experiments, in particular with the satel lites HEAO I and II (see ego Boldt 1987) and with ROSAT (e. g. Hasinger et aI. , 1993). Figure 1 shows a compilation of some of the most recent spectral measure ments for the X-ray background. Over the energy range from 3 to about 100 keY its spectrum can be well approximated by an optically thin thermal bremsstrahlung model with kT ~ 40 keY, while at lower X-ray energies a steepening into a new component has been observed observed (e. g.
A Brief History Of Radio Astronomy In The Ussr
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Author : S. Y. Braude
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-03-14
A Brief History Of Radio Astronomy In The Ussr written by S. Y. Braude and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-03-14 with Science categories.
This translation of A Brief History of Radio Astronomy in the USSR makes descriptions of the antennas and instrumentation used in the USSR, the astronomical discoveries, as well as interesting personal backgrounds of many of the early key players in Soviet radio astronomy available in the English language for the first time. This book is a collection of memoirs recounting an interesting but largely still dark era of Soviet astronomy. The arrangement of the essays is determined primarily by the time when radio astronomy studies began at the institutions involved. These include the Lebedev Physical Institute (FIAN), Gorkii State University and the affiliated Physical-Technical Institute (GIFTI), Moscow State University Sternberg Astronomical institute (GAISH) and Space Research Institute (IKI), the Department of Radio Astronomy of the Main Astronomical Observatory in Pulkovo (GAO), Special Astrophysical Observatory (SAO), Byurakan Astrophysical Observatory (BAO), Crimean Astrophysical Observatory, Academy of Sciences of the Ukraine (SSR), Institute of Radio Physics and Electronics of the USSR Academy of Sciences (IRE), Institute of Terrestrial Magnetism, the Ionosphere and Radio-Wave Propagation Institute (IZMIRAN), Siberian Institute of Terrestrial Magnetism, the Ionosphere and Radio-Wave Propagation (SibIZMIRAN), the Radio Astrophysical Observatory of the Latvian Academy of Sciences and Leningrad State University. A Brief History of Radio Astronomy in the USSR is a fascinating source of information on a past era of scientific culture and fields of research including the Soviet SETI activities. Anyone interested in the recent history of science will enjoy reading this volume.
New Scientist
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Author :
language : en
Publisher:
Release Date : 1992-07
New Scientist written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992-07 with categories.
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Author : Martha T. Mooney
language : en
Publisher: H. W. Wilson
Release Date : 1995
Print written by Martha T. Mooney and has been published by H. W. Wilson this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Literary Criticism categories.
- Excerpts from and citations to reviews of more than 8,000 books each year, from 109 publications. - Electronic version with expanded coverage, and retrospective version available, see p. 5 and p. 31. - Pricing: Service Basis-Books.
Close Binaries In The 21st Century New Opportunities And Challenges
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Author : Alvaro Gimenez
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-04-05
Close Binaries In The 21st Century New Opportunities And Challenges written by Alvaro Gimenez and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-04-05 with Science categories.
This book is the proceedings of an international conference entitled "Close Binaries in the 21st Century: New Opportunities and Challenges", held in Syros island, Greece, June 27-30, 2005. The papers collected in this volume detail the latest achievements in the field and reflect the state of the art of the dynamically evolving area of binary star research.
Physics Briefs
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Author :
language : en
Publisher:
Release Date : 1993
Physics Briefs written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Physics categories.
Naic
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Author : National Astronomy and Ionosphere Center
language : en
Publisher:
Release Date : 1992
Naic written by National Astronomy and Ionosphere Center and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Ionosphere categories.