Starburst Galaxies and the X-Ray Background

Details Starburst Galaxies and the X-Ray Background Starburst Galaxies and the X-Ray Background

2002-11-25

arxiv.org/abs/astro-ph/0211532v1

Astron.Astrophys. 399 (2003) 9-18

Astronomy and Astrophysics

Astrophysics

10 pages, 5 figures; accepted for publication in A&A

Scientific paper

10.1051/0004-6361:20021738

Integrated X-ray spectra of an evolving population of starburst galaxies (SBGs) are determined based on the observed spectra of local SBGs. In addition to emission from hot gas and binary systems, our model SBG spectrum includes a nonthermal component from Compton scattering of relativistic electrons by the intense ambient far-IR and the (steeply evolving) CMB radiation fields. We use these integrated spectra to calculate the levels of contribution of SBGs to the cosmic X-ray background assuming that their density evolves as (1+z)^q up to a maximal redshift of 5. We find that at energies <10 keV this contribution is at a level of few percent for q up to 3, and in the range of 5%-15% for q ~ 4.5. The Compton component is predicted to be the main SBG emission at high energies, and its relative contribution gets progressively higher for increasing redshift.

Affiliated with

Also associated with

No associations

Rating

Starburst Galaxies and the X-Ray Background does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Starburst Galaxies and the X-Ray Background, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Starburst Galaxies and the X-Ray Background will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-253465