[PDF] Extragalactic Background Radiation eBook

Author : Daniela Calzetti
Publisher : Cambridge University Press
Page : 314 pages
File Size : 23,22 MB
Release : 1995-01-26
Category : Science
ISBN : 9780521495585

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A collection of edited review articles from a workshop at the Space Telescope Science Institute which united observational astronomers and theorists to examine the extragalactic background radiation at all wavelengths.

Author : International Astronomical Union. Symposium
Publisher : Springer Science & Business Media
Page : 546 pages
File Size : 11,44 MB
Release : 1990-08-31
Category : Science
ISBN : 9780792308416

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Proceedings of the 139th Symposium of the International Astronomical Union on `The Galactic and Extragalactic Background Radiation, held in Heidelberg, FRG, June 12-16, 1989

Author : Stuart Bowyer
Publisher : Springer
Page : 0 pages
File Size : 20,43 MB
Release : 1990-09-14
Category : Science
ISBN : 9789400906532

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The galactic and extragalactic background radiation components are of major importance in astrophysical studies of a variety of problems related to galactic structure, interstellar matter, the distribution and evolution of galaxies and intergalactic matter, and cosmology. The back ground radiation is a unique source of information in cases where the source is of a truly diffuse nature, as with scattering and emission by interstellar dust and gas, or where the discrete emission sources are so faint (e. g. , very distant galaxies) that they can be observed only by their integrated emission. The galactic and extragalactic background must be discussed together because they are observationally entangled and their proper separation requires a knowledge of both components. The above points are equally valid for the entire electromag netic spectrum, from gamma rays to long radio waves. Thus, the study of the galactic and extragalactic background radiation is interdisciplinary in its character, and a multi wavelength approach would appear to be dictated by the nature of the topic. The proper separation of the galactic and extragalactic background components requires a knowledge of both. In addition, the foreground components, i. e. , zodiacal light, airglow, and atmospheric scattered light, must be treated carefully.

Author : JEFFREY ROBERT YOUNGEN
Publisher :
Page : 266 pages
File Size : 39,80 MB
Release : 1991
Category :
ISBN :

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To be sure that the final data is only characteristic of the EBL, specific checks have been made on the contributions to the power spectrum due to instrumental effects, atmospheric variations and zodiacal light, scattering halos of stars and galaxies, and the diffuse galactic light.

Author : Richard J. Tuffs
Publisher : Cambridge University Press
Page : 533 pages
File Size : 35,54 MB
Release : 2012-08-30
Category : Science
ISBN : 9781107019843

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Recent observational developments are providing the first truly panchromatic view of galaxies, extending from the radio to TeV gamma-rays. This is motivating the development of new models for the interpretation of spectral energy distributions (SEDs) of galaxies in terms of the formation, evolution and emission of stellar and accretion-driven sources of photons, the interaction of the photons with the gaseous and dust components of the interstellar medium, and high-energy processes involving cosmic rays. IAU Symposium 284 details progress in the development of such models, their relation to fundamental theory, and their application to the interpretation of the panchromatic emission from the Milky Way and nearby galaxies, connecting the latter with models for the evolution of the SEDs of distant galaxies, and the extragalactic background light. IAU S284 is a useful resource for all researchers working with the copious amounts of multiwavelength data for galaxies now becoming available.