Author: Xiang Dong Liu
Publisher:
ISBN:
Category :
Languages : en
Pages : 100

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Book Description

Author: Patrick Petitjean
Publisher: Atlantica Séguier Frontières
ISBN: 9782863322291
Category : Absorption spectra
Languages : en
Pages : 490

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Book Description

Author: David Kirkman
Publisher:
ISBN:
Category :
Languages : en
Pages : 356

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Author: Georges Meylan
Publisher: Springer Science & Business Media
ISBN: 3540494588
Category : Science
Languages : en
Pages : 481

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Book Description
The controversial question of whether the majority of the narrow absorption lines observed in QSO spectra represent cosmological intervening systems or ejecta from the QSO themselves is settled. QSO absorption line spectroscopy, initially a mere technique, has matured into an essential extragalactic research tool for understanding the content of the Universe at redshifts between 0 and 4, and beyond. The only previous important meeting devoted to "QSO Absorption Lines" was held in May 1987 at the Space Telescope Science Institute in Baltimore, Maryland, U.S.A. Since that time, nearly a decade ago, research has been ex tremely active in this now well-established field of astrophysics. Theoretical stud ies and simulations have taken advantage of the constant progress in computer technology, and during these last few years, the observational results have bene fited largely from the new facillities offered by the Hubble Space Telescope in the UV wavelength range and the Keck Telescope for high-resolution spectroscopy.

Author: J. Chris Blades
Publisher: Cambridge University Press
ISBN: 9780521345613
Category : Science
Languages : en
Pages : 362

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Book Description
This second title in the series published for the Space Telescope Science Institute researches the current models of quasar absorption and the systems of absorption lines in the spectra of quasars. Experts in this field discuss the nature of the absorbing process in the vicinity of quasars, the "Lyman-alpha forest", metal-line systems, and quasars as probes of high redshift galaxies. The Hubble Space Telescope will be a valuable tool for learning more about the physics and astronomy of quasars.

Author: Michael Lynn Fisher
Publisher:
ISBN:
Category :
Languages : en
Pages : 408

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Book Description

Author: International Astronomical Union. Symposium
Publisher: Cambridge University Press
ISBN: 9780521856089
Category : Nature
Languages : en
Pages : 552

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Book Description
Proceedings volume for researchers and graduate students of astronomy, covering the most exciting science and key ELT projects.

Author: Charles William Finn
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: International Astronomical Union. Colloquium
Publisher: Cambridge University Press
ISBN: 9780521852050
Category : Science
Languages : en
Pages : 540

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Book Description
Review of recent research in the field of quasar absorption line systems.

Author: G.O. Abell
Publisher: Springer Science & Business Media
ISBN: 9400972202
Category : Science
Languages : en
Pages : 501

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Book Description
Since the last International Astronomical Union Symposium that dealt with matters cosmological, there have been dramatic advances, both on the observational and theoretical fronts. Modern high-efficiency detectors have made possible extensive magnitude-limited redshift surveys, which have permitted observational cosmologists to construct three-dimensional maps of large regions of space. What seems to emerge is a distribution of matter in extensive, flat, but probably filamentary, and possibly interconnected, superclusters, serving as interstices between vast voids in space. Meanwhile, theoretical ideas that were highly speculative a few years ago have begun to be taken seriously as possibly describing conditions in the very early universe. And brand new ideas, such as that of the inflationary universe, hold promise of solving outstanding observational, theoretical, and philosophical problems in cosmology. A new look at grand unified theories and concepts of supersymmetry have brought observational and theoretical cosmologists to a common meeting ground with modern particle physicists.