Massive X-ray binaries and the X-ray background

Details Massive X-ray binaries and the X-ray background Massive X-ray binaries and the X-ray background

Apr 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aipc..470..287n&link_type=abstract

The 9th astrophysics conference: After the dark ages, when galaxies were young (the Universe at 2<Z<5). AIP Conference Proceedi

Astronomy and Astrophysics

Astrophysics

Background Radiations, X-Ray Binaries, Active And Peculiar Galaxies And Related Systems, Radiation Mechanisms, Polarization

Scientific paper

In this calculation we estimate the contribution of massive X-ray binaries to the hard X-ray background (XRB). Traditionally, due to their short life-times, MXRBs were thought not to be significant contributors to the XRB. However, given the recent progress in the observational determination of the global star-formation rate as a function of redshift probed both via emitted blue-light and that re-radiated in the sub-mm, assuming that the formation rate of MXRBs tracks the global star formation rate, their integrated contribution to the XRB can be computed and is shown to be non-negligible. While the origin of the bulk of the hard XRB can be attributed to obscured AGNs, we show that MXRBs can account for 10-30%.

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