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Author : Gail Anne Reichert
Publisher :
ISBN 13 :
Total Pages : 450 pages
Book Rating : 4.:/5 (29 download)
Download or read book X-ray and Optical Studies of Extragalactic X-ray Emitters written by Gail Anne Reichert and published by . This book was released on 1982 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Stephen S. Holt
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.3/5 (91 download)
Download or read book Spectroscopy of Compact Extragalactic X-ray Sources written by Stephen S. Holt and published by . This book was released on 1980 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Joachim E. Trümper
Publisher : Springer Science & Business Media
ISBN 13 : 3540344128
Total Pages : 499 pages
Book Rating : 4.5/5 (43 download)
Download or read book The Universe in X-Rays written by Joachim E. Trümper and published by Springer Science & Business Media. This book was released on 2008-02-05 with total page 499 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions from leading scientists in the field, and edited by two of the most prominent astronomers of our time, this is a totally authoritative volume on X-ray astronomy that will be essential reading for everyone interested – from students to astrophysicists and physicists. All the aspects of this exciting area of study are covered, from astronomical instrumentation to extragalactic X-ray astronomy.
Author : R. Giacconi
Publisher : Springer Science & Business Media
ISBN 13 : 9400984596
Total Pages : 331 pages
Book Rating : 4.4/5 (9 download)
Download or read book X-Ray Astronomy with the Einstein Satellite written by R. Giacconi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: The meeting of the High Energy Astrophysics Division of the American Astronomical Society, held in Cambridge, Massachusetts on January 28- 30, 1980, marks the coming of age of X-ray astronomy. In the 18 years since the discovery of the first extrasolar X-ray source, Sco X-l, the field has experienced an extremely rapid instrumentation development culminating with the launch on November 13, 1978 of the Einstein Observatory (HEAO-2) which first introduced the use of high resolution imaging telescopes to the study of galactic and extragalactic X-ray sources. The Einstein Observatory instruments can detect sources as faint as 10-7 Sco X-lor about 17 magnitudes fainter. The technological developments in the field have been paralleled by a host of new discoveries: in the early 1960's the detection of 9 "X-ray stars", objects 10 times more luminous in X-rays than the Sun and among the brightest stellar objects at all wavelengths; in the late 1960's and early 1970's the discovery of the nature of such systems which were identified as collapsed stars (neutron stars and black holes) in mass exchange binary systems, and the detection of the first few extragalactic sources.
Author : Kristen C. Dage
Publisher :
ISBN 13 :
Total Pages : 118 pages
Book Rating : 4.6/5 (624 download)
Download or read book Long Term Optical and X-ray Monitoring of Black Hole Candidates in Extragalactic Globular Clusters written by Kristen C. Dage and published by . This book was released on 2020 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: The question of whether globular clusters (GCs) host black holes (BHs) has been a long-standing question in astronomy. Because of the dynamics of the crowded globular cluster environment, they should be extremely efficient at forming black hole-black hole binaries (BBHs), such as those detected merging by LIGO. LIGO is detecting many more (and more massive!) BBHs than was ever expected, and a first step to understanding the formation of these binaries is to understand BHs in GCs. However, very few ways exist to study BHs in GCs observationally, and there is only one effective method to study BH candidates in extragalactic GCs: by studying ultraluminous X-ray sources (ULXs) that are associated with GCs. Because their X-ray luminosities far exceed the Eddington limit for a stellar mass BH, ULXs in GCs are good BH candidates. However, they are very rare, with only a few per galaxy (with only 10 currently known sources among 3 galaxies). In this thesis, we study a total of 9 ULX sources that are associated with globular clusters in both X-ray and optical. One of these, RZ2109, shows extreme variability across more than 15 years of monitoring in X-ray, with changes of almost an order of magnitude on the order of days. Typically any variability in flux is expected to be correlated with a change in the spectral properties of the source (i.e. some physical change in the system), however, the shape of the X-ray spectrum of RZ2109 remains the same across all observations. X-ray and optical studies of all 9 GC ULXs indicate a potential correlation between the X-ray spectrum and presence of optical emission beyond the cluster continuum--one of the few X-ray-optical correlations known for astronomical objects. Lastly, we present long-term monitoring in optical of RZ2109 shows a broad [OIII] emission line which declines long-term over almost ten years, and then re-brightens.
Author : David De Young
Publisher : University of Chicago Press
ISBN 13 : 9780226144153
Total Pages : 588 pages
Book Rating : 4.1/5 (441 download)
Download or read book The Physics of Extragalactic Radio Sources written by David De Young and published by University of Chicago Press. This book was released on 2002 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extragalactic radio sources are among the most unusual and spectacular objects in the universe, with sizes in excess of millions of light years, radiated energies over ten times those of normal galaxies, and a unique morphology. They reveal some of the most dramatic physical events ever seen and provide essential clues to the basic evolutionary tracks followed by all galaxies and groups of galaxies. In The Physics of Extragalactic Radio Sources, David De Young provides a clearly written overview of what is currently known about these objects. A unique feature of the book is De Young's emphasis on the physical processes associated with extragalactic radio sources: their evolution, their environment, and their use as probes to solve other astrophysical problems. He also makes extensive use of the large amount of data now available from observations at x-ray, optical, and radio wavelengths to illustrate his main points. The Physics of Extragalactic Radio Sources will be a comprehensive introduction to the field for graduate students and a useful summary for astrophysicists.
Author : D.S. Heeschen
Publisher : Springer Science & Business Media
ISBN 13 : 9400977816
Total Pages : 484 pages
Book Rating : 4.4/5 (9 download)
Download or read book Extragalactic Radio Sources written by D.S. Heeschen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: IAU Symposium 97, Extragalactic Radio Sources, was held at Albuquerque, New Mexico August 3-7, 1981. It was co-sponsored by IAU Commissions 28, 40, 47 and 48 and by URSI Commission J. Financial and organizational support were provided by the National Radio Astronomy Observatory, the University of New Mexico, and the National Science Foundation. A wide variety of interesting objects and phenomena can be covered under the heading "Extragalactic Radio Sources", and a diverse set of topics was in fact discussed at the symposium. Radio galaxies, quasars, Seyfert galaxies and BL Lacertids received the most attention, but normal galaxies, the galactic center, and even SS433 were also discussed. While the unifying theme of the symposium was radio emission, studies at all wavelengths--X-ray, UV, optical, IR, and radio--were included. In general, the emphasis was on individual objects and the physical processes associated with them, but there were also papers on statistical studies and cosmology. The symposium was attended by 209 scientists from 18 countries.
Author : Richard F. Hirsh
Publisher : CUP Archive
ISBN 13 : 9780521251211
Total Pages : 198 pages
Book Rating : 4.2/5 (512 download)
Download or read book Glimpsing an Invisible Universe written by Richard F. Hirsh and published by CUP Archive. This book was released on 1983-10-13 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the evolution of X-ray astronomy during the initial phases of its development. Three transformations of astronomy as a discipline are highlighted: the augmentation of purely optical observations; the emergence of federal funding as the dominant source of financial support; and the greatly altered size and structure of the research community.
Author : R. Giacconi
Publisher : Springer Science & Business Media
ISBN 13 : 9401021058
Total Pages : 456 pages
Book Rating : 4.4/5 (1 download)
Download or read book X-Ray Astronomy written by R. Giacconi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: It was about fourteen years ago that some of us became intrigued with the idea of searching the sky for X-ray and gamma-ray sources other than the Sun, the only celestial emitter of high-energy photons known at that time. It was, of course, clear that an effort in this direction would not have been successful unless there occurred, somewhere in space, processes capable of producing high-energy photons much more efficiently than the processes responsible for the radiative emission of the Sun or of ordinary stars. The possible existence of such processes became the subject of much study and discussion. As an important part of this activity, I wish to recall a one-day conference on X-ray astronomy held at the Smithsonian Astrophysical Observatory in 1960. The theoretical predictions did not provide much encouragement. While several 'unusual' celestial objects were pin-pointed as possible, or even likely, sources of X-rays, it did not look as if any of them would be strong enough to be observable with instru mentation not too far beyond the state of the art. Fortunately, we did not allow our selves to be dissuaded. As far as I am personally concerned, I must admit that my main motivation for pressing forward was a deep-seated faith in the boundless re sourcefulness of nature, which so often leaves the most daring imagination of man far behind.
Author : Keith Arnaud
Publisher : Cambridge University Press
ISBN 13 : 1139502565
Total Pages : 207 pages
Book Rating : 4.1/5 (395 download)
Download or read book Handbook of X-ray Astronomy written by Keith Arnaud and published by Cambridge University Press. This book was released on 2011-09-29 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern x-ray data, available through online archives, are important for many astronomical topics. However, using these data requires specialized techniques and software. Written for graduate students, professional astronomers and researchers who want to start working in this field, this book is a practical guide to x-ray astronomy. The handbook begins with x-ray optics, basic detector physics and CCDs, before focussing on data analysis. It introduces the reduction and calibration of x-ray data, scientific analysis, archives, statistical issues and the particular problems of highly extended sources. The book describes the main hardware used in x-ray astronomy, emphasizing the implications for data analysis. The concepts behind common x-ray astronomy data analysis software are explained. The appendices present reference material often required during data analysis.
Author : R. Giacconi
Publisher : Springer
ISBN 13 : 9789027712615
Total Pages : 0 pages
Book Rating : 4.7/5 (126 download)
Download or read book X-Ray Astronomy with the Einstein Satellite written by R. Giacconi and published by Springer. This book was released on 1981-06-30 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Riccardo Giacconi Harvard/Smithsonian Center for Astrophysics The meeting of the High Energy Astrophysics Division of the American Astronomical Society, held in Cambridge, Massachusetts on January 28- 30, 1980, marks the coming of age of X-ray astronomy. In the 18 years since the discovery of the first extrasolar X-ray source, Sco X-l, the field has experienced an extremely rapid instrumentation development culminating with the launch on November 13, 1978 of the Einstein Ob servatory (HEAO-2) which first introduced the use of high resolution imaging telescopes to the study of galactic and extragalactic X-ray sources. The Einstein Observatory instruments can detect sources as faint as 10-7 Sco X-lor about 17 magnitudes fainter. The technological developments in the field have been paralleled by a host of new discoveries: in the early 1960's the detection of 9 "X-ray stars", objects 10 times more luminous in X-rays than the Sun and among the brightest stellar objects at all wavelengths; in the late 1960's and early 1970's the discovery of the nature of such systems which were identified as collapsed stars (neutron stars and black holes) in mass exchange binary systems, and the detection of the first few extragalactic sources.
Author :
Publisher :
ISBN 13 :
Total Pages : 1292 pages
Book Rating : 4.3/5 (91 download)
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976 with total page 1292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : H. Bradt
Publisher : Springer Science & Business Media
ISBN 13 : 9401025851
Total Pages : 323 pages
Book Rating : 4.4/5 (1 download)
Download or read book X- and Gamma-Ray Astronomy written by H. Bradt and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: The IAU Symposium No. 55 on 'X-Ray and Gamma-Ray Astronomy' has occurred, not entirely by coincidence, at an important moment in the development of these new branches of observational astronomy. In X-ray astronomy the data from the first X-ray observatory UHURU have contributed to a new view of the X-ray sky and a new conception of the nature and properties of galactic and extragalactic X-ray sources. In gamma-ray astronomy the exciting and often controversial nature of the results underlines the importance of the forthcoming launch of SAS-B, the first orbiting y-ray observatory. As Bruno Rossi reminds us (p. I), the Symposium occurred almost exactly ten years after the first detection of the X-ray star Sco X-I. During this time we have moved from the detection of a handful of the nearest and brightest sources to the detailed study of the nature of stellar sources in the farthest reaches of our own galaxy and in external galaxies of the local group. The detection of pulsating X-ray sources in bi nary systems permits the measurement of pulsation periods, and orbital parameters with precisions comparable to any yet achieved with traditional observational techniques. The strong indications that most X-ray sources are extremely compact objects give us confidence that X-ray astronomy will playa significant and possibly decisive role in the study of stars near the end point of stellar evolution.
Author : Cosimo Bambi
Publisher : Springer Nature
ISBN 13 : 9811969604
Total Pages : 5912 pages
Book Rating : 4.8/5 (119 download)
Download or read book Handbook of X-ray and Gamma-ray Astrophysics written by Cosimo Bambi and published by Springer Nature. This book was released on with total page 5912 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Xavier Barcons
Publisher : Cambridge University Press
ISBN 13 : 9780521416511
Total Pages : 328 pages
Book Rating : 4.4/5 (165 download)
Download or read book The X-ray Background written by Xavier Barcons and published by Cambridge University Press. This book was released on 1992-07-31 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: A review of the current observational knowledge and understanding of the cosmic X-ray background.
Author :
Publisher :
ISBN 13 :
Total Pages : 1100 pages
Book Rating : 4.E/5 ( download)
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1974-03 with total page 1100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Naval Research Laboratory (U.S.)
Publisher :
ISBN 13 :
Total Pages : 314 pages
Book Rating : 4.U/5 (183 download)
Download or read book Report of NRL Progress written by Naval Research Laboratory (U.S.) and published by . This book was released on 1966 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
