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Absorption of X-rays and gamma rays at cosmological distances
ZDZIARSKI
, A. A ; SVENSSON, R
The Astrophysical journal, 1989-09, Vol.344 (2), p.551-566
[Periódico revisado por pares]
Chicago, IL: University of Chicago Press
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Título:
Absorption of X-rays and gamma rays at cosmological distances
Autor:
ZDZIARSKI
, A. A
;
SVENSSON, R
Assuntos:
640106 - Astrophysics & Cosmology- Cosmology
;
ABSORPTION
;
ASTRONOMY
;
BACKGROUND RADIATION
;
BARYONS
;
BASIC INTERACTIONS
;
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
;
COSMOLOGY
;
Earth, ocean, space
;
ELECTROMAGNETIC INTERACTIONS
;
ELECTROMAGNETIC RADIATION
;
ELEMENTARY PARTICLES
;
Exact sciences and technology
;
FERMIONS
;
GAMMA ASTRONOMY
;
GAMMA RADIATION
;
HADRONS
;
INTERACTIONS
;
IONIZING RADIATIONS
;
MASSLESS PARTICLES
;
Origin and formation of the universe
;
PAIR PRODUCTION
;
PARTICLE INTERACTIONS
;
PHOTON-BARYON INTERACTIONS
;
PHOTON-HADRON INTERACTIONS
;
PHOTON-PHOTON INTERACTIONS
;
PHOTONS
;
RADIATIONS
;
RED SHIFT
;
SCATTERING
;
Stellar systems. Galactic and extragalactic objects and systems. The universe
;
X RADIATION
É parte de:
The Astrophysical journal, 1989-09, Vol.344 (2), p.551-566
Descrição:
The absorption of X-rays and gamma-rays in interactions with the cosmic thermal background and baryonic matter at cosmological redshifts is studied. Analytical formulae for the optical depths to photoionization, Compton scattering, photon-matter pair production, photon-photon scattering, and photon-photon single- and double-pair production are derived as functions of redshift and photon energy. The redshift-energy plane is divided into regions of dominance of various absorption processes. In particular, it is found that photon-photon scattering (a process not previously considered in astrophysics) is important for certain ranges of photon energy and redshift. 55 refs.
Editor:
Chicago, IL: University of Chicago Press
Idioma:
Inglês
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