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Author : Tanaka, Y.
Publisher :
ISBN 13 :
Total Pages : 752 pages
Book Rating : 4.3/5 (91 download)
Download or read book Frontiers of X-Ray Astronomy (Paper) written by Tanaka, Y. and published by . This book was released on 1992 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : A. C. Fabian
Publisher : Cambridge University Press
ISBN 13 : 9780521534871
Total Pages : 260 pages
Book Rating : 4.5/5 (348 download)
Download or read book Frontiers of X-Ray Astronomy written by A. C. Fabian and published by Cambridge University Press. This book was released on 2004-07-08 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: X-ray astronomy has undergone a revolution in recent years. With the launch of two orbiting observatories, Chandra and XMM-Newton, astronomers are now able to obtain spectra and images at a higher resolution than ever before. Observations have had a major impact on topics ranging from protostars to cosmology. The contributions in this 2004 work, by leading authorities in the field, originate from a Royal Society Discussion Meeting that was held to review results from the current generation of X-ray telescopes, and set them in context. This book is a valuable reference for research astronomers and graduate students wishing to understand the latest developments in this exciting field.
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 : Makino, Fumiyoshi
Publisher :
ISBN 13 : 9784946443220
Total Pages : 683 pages
Book Rating : 4.4/5 (432 download)
Download or read book New Horizon of X-Ray Astronomy; First Results from ASCA written by Makino, Fumiyoshi and published by . This book was released on 1994 with total page 683 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Willem Wamsteker
Publisher : Springer Science & Business Media
ISBN 13 : 9780792325277
Total Pages : 794 pages
Book Rating : 4.3/5 (252 download)
Download or read book Frontiers Of Space And Ground-Based Astronomy written by Willem Wamsteker and published by Springer Science & Business Media. This book was released on 1994-08-31 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : United States. X-ray Astronomy Program Working Group
Publisher :
ISBN 13 :
Total Pages : 96 pages
Book Rating : 4.X/5 (4 download)
Download or read book 15-year Plan for X-ray Astronomy, 1994-2008 written by United States. X-ray Astronomy Program Working Group and published by . This book was released on 1994 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : A. Peacock
Publisher : Springer Science & Business Media
ISBN 13 : 9400954484
Total Pages : 711 pages
Book Rating : 4.4/5 (9 download)
Download or read book X-Ray Astronomy in the Exosat Era written by A. Peacock and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 711 pages. Available in PDF, EPUB and Kindle. Book excerpt: Algol is a triple system containing a 70 hr eclipsing binary (K IV and B8 V) in a 694 day orbit with an A V star. The X-ray emission from this system (Schnopper et al 1976) is thought to be associated with a corona surrounding the lobe filling and synchron ously rotating K IV star. This is based on the similarity of the X-ray spectrum and luminosity of this system to that of the RS CVn binaries which also contain K sub-giants with similar rotation periods and the fact that the luminosity of any coronae surrounding the B8 V and AV companion stars should not be enhanced by rapid rotation (Pallavicini et al 1980, White et al 1980). The Einstein SSS measurement showed the X-ray spectrum to be two component with 6 7 temperatures of 7. 10 K and 3. 10 K (White et al. 1980). As dis cussed by Swank et al. (1981), the problem in understanding stellar coronae in general is how to scale up the solar model to account for the enhanced luminosities. The close to 900 inclination and similar sizes for the Band K stars of 3. 6 and 3. 8 R0 respectively make Algol an ideal candidate for an X-ray eclipse measurement wherein the size of the X-ray emitting coronal structures can be directly measured. In this paper we report a continuous observation through the secondary eclipse of Algol using the EXOSAT Observatory. 2.
Author : Jean Schneider
Publisher : Springer Science & Business Media
ISBN 13 : 9400929935
Total Pages : 247 pages
Book Rating : 4.4/5 (9 download)
Download or read book Frontiers and Space Conquest / Frontières et Conquête Spatiale written by Jean Schneider and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : H. Bradt
Publisher :
ISBN 13 : 9789401025867
Total Pages : 336 pages
Book Rating : 4.0/5 (258 download)
Download or read book X- and Gamma-Ray Astronomy written by H. Bradt and published by . This book was released on 1973-03-31 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Valerie Neal
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (31 download)
Download or read book Observing the Universe in X-rays written by Valerie Neal and published by . This book was released on 1984 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Advanced X-Ray Astrophysics Facility (AXAF), an orbital observatory for detailed, longterm study of X-ray emissions and the phenomena that produce them. The AXAF is an essential step in our continuing quest to understand the universe."--P. 1.
Author : Peter J. Serlemitsos
Publisher :
ISBN 13 :
Total Pages : 612 pages
Book Rating : 4.X/5 (4 download)
Download or read book BBXRT written by Peter J. Serlemitsos and published by . This book was released on 1993 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Qi Bin Li
Publisher : World Scientific
ISBN 13 : 9814552607
Total Pages : 234 pages
Book Rating : 4.8/5 (145 download)
Download or read book Frontiers Of Astronomy In 1990's - Proceedings Of The Workshop written by Qi Bin Li and published by World Scientific. This book was released on 1993-09-09 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: The workshop on “Frontiers of Astronomy in 1990s” was held to commemorate the 70th anniversary of the founding of the Chinese Astronomical Society.In total this set of proceedings presents 12 invited papers and 15 contributions, covering the many fields and their development within the region. These include astronomy, astronomical instruments, high energy astrophysics and space astronomy, galaxies and large scale structure of the universe, stars, interstellar medium and the Galaxy, the Sun and the solar system and many more interesting topics in astronomy.15 distinguished scientists from 8 countries attended and presented their reports. These include Y Kozai, J Trümper, J P Swings, R E Williams, W Hillebrandt, F N Bash, W Wamsteker, M Créze, M Dennefeld, G Börner, Kaifu, H-Y Chiu, T C Weekes, J-S Shen and C-H Tsai.For those mystified by the stars, the planets and the universe as a whole, this volume promises to intrigue and transport you beyond the frontiers of astronomy.
Author : R. Giacconi
Publisher : Springer
ISBN 13 : 9789027703873
Total Pages : 452 pages
Book Rating : 4.7/5 (38 download)
Download or read book X-Ray Astronomy written by R. Giacconi and published by Springer. This book was released on 1974-12-31 with total page 452 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 : Stephen S. Holt
Publisher :
ISBN 13 :
Total Pages : 660 pages
Book Rating : 4.3/5 (243 download)
Download or read book X-ray Astronomy in the 1980's written by Stephen S. Holt and published by . This book was released on 1982 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Willem Wamsteker
Publisher : Springer Science & Business Media
ISBN 13 : 9401107947
Total Pages : 721 pages
Book Rating : 4.4/5 (11 download)
Download or read book Frontiers Of Space And Ground-Based Astronomy written by Willem Wamsteker and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 721 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : British Library. Document Supply Centre
Publisher :
ISBN 13 :
Total Pages : 870 pages
Book Rating : 4.F/5 ( download)
Download or read book Index of Conference Proceedings written by British Library. Document Supply Centre and published by . This book was released on 2003 with total page 870 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jacques Roland
Publisher : Cambridge University Press
ISBN 13 : 9780521416023
Total Pages : 392 pages
Book Rating : 4.4/5 (16 download)
Download or read book Extragalactic Radio Sources written by Jacques Roland and published by Cambridge University Press. This book was released on 1992-06-26 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: The physics of active galactic nuclei, the origin of extragalactic jets and the formation of extended extragalactic radio sources are among the most interesting challenges of modern astrophysics. This book contains the proceedings of the 7th meeting of the Institut d'Astrophysique de Paris, which drew together both theorists and observers in this exciting field. Recent observational data at X-ray, optical and radio wavelengths is discussed, and new theoretical developments concerning beam and jet formation models are considered. Special treatment is given to plasma physics problems related to particle acceleration, magnetic reconnection, beam-plasma interaction and coherent emission. The volume will be of use to all students and researchers who are working in this field.
