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Author: Peter J. Serlemitsos
Publisher:
ISBN:
Category : Astronomical spectroscopy
Languages : en
Pages : 612
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Book Description
Author: Peter J. Serlemitsos
Publisher:
ISBN:
Category : Astronomical spectroscopy
Languages : en
Pages : 612
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Book Description
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 36
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Author:
Publisher:
ISBN:
Category : Astro
Languages : en
Pages : 50
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Book Description
Author: A. Peacock
Publisher: Springer Science & Business Media
ISBN: 9400954484
Category : Science
Languages : en
Pages : 711
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Book Description
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: Xavier Barcons
Publisher: Cambridge University Press
ISBN: 9780521416511
Category : Nature
Languages : en
Pages : 328
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Book Description
A review of the current observational knowledge and understanding of the cosmic X-ray background.
Author: Eric H. Silver
Publisher: Cambridge University Press
ISBN: 9780521548168
Category : Science
Languages : en
Pages : 636
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Book Description
Up-to-date accounts of recent and future advances in short-wavelength spectroscopy of laboratory and cosmic plasmas.
Author: A.C. Fabian
Publisher: Springer Science & Business Media
ISBN: 9401124825
Category : Science
Languages : en
Pages : 373
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Book Description
Clusters and superclusters of galaxies are the largest objects in the Universe. They have been the subject of intense observational studies at a variety of wavelengths, from radio to X-ray which has provoked much theoretical debate and advanced our understanding of the recent evolution of the large-scale structure of the Universe. The current status of the subject is reviewed in this volume by active researchers who lectured at a NATO Advanced Study Institute held in Cambridge, England in July 1991. Much of the material is presented in a pedagogical manner and will appeal to scientists, astronomers and graduate students interested in extragalactic astronomy.
Author: Kimberly Weaver
Publisher:
ISBN:
Category : Astronomical spectroscopy
Languages : en
Pages : 336
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Book Description
Author: Goddard Space Flight Center
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 244
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Book Description
Author: International Astronomical Union. Colloquium
Publisher: Cambridge University Press
ISBN: 9780521460804
Category : Science
Languages : en
Pages : 460
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Book Description
A comprehensive and timely review of studies of supernovae and supernova remnants.
