The X-ray background from groups and clusters of galaxies

Details The X-ray background from groups and clusters of galaxies The X-ray background from groups and clusters of galaxies

2001-06-20

arxiv.org/abs/astro-ph/0106355v1

Astronomy and Astrophysics

Astrophysics

6 pages, 3 figure, accepted for publication in ApJ

Scientific paper

10.1086/322961

We present an estimate of the X-ray background (XRB) spectrum from the warm-hot intergalactic medium (IGM) associated with groups and clusters of galaxies, using purely the observationally determined X-ray luminosity function (XLF) and X-ray luminosity (Lx) - temperature (T) relations for groups and clusters. As compared with previous semi-analytic models based on the Press-Schechter mass function, our approach provides a much simpler and more realistic way to evaluate the XRB from groups and clusters in the sense that we make no assumption about the dynamical and heating properties of the IGM, and the intrinsic dispersion in the Lx-T relations due to different physical mechanisms among different groups and clusters can be also included. It shows that the resulting 0.1-10 keV XRB spectrum by summing up the X-ray emission from all groups and clusters is consistent with current upper limits placed on the contribution from diffuse gas to the XRB. This may have profound implications for our understanding of the missing baryons in the universe.

Affiliated with

Also associated with

No associations

Rating

The X-ray background from groups and clusters of galaxies 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 The X-ray background from groups and clusters of galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The X-ray background from groups and clusters of galaxies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-517200