Studying the Evolution of Clusters of Galaxies Through X-Ray Absorption Lines

Details Studying the Evolution of Clusters of Galaxies Through X-Ray Absorption Lines Studying the Evolution of Clusters of Galaxies Through X-Ray Absorption Lines

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aas...192.3702d&link_type=abstract

American Astronomical Society, 192nd AAS Meeting, #37.02; Bulletin of the American Astronomical Society, Vol. 30, p.864

Mathematics

Logic

Scientific paper

Spectroscopic observations of AGN are very useful for determining the structure and evolution of intervening gaseous material in the universe to high redshifts. Optical spectroscopy of AGN over the past 20 years has produced many interesting results concerning the evolution of the warm gas in Ly alpha clouds. Another major component of gaseous material in the universe is the hot gas (kT = 1-10 keV) in clusters of galaxies. Due to the high gas temperatures, the strongest absorption lines in clusters arise from H-like and He-like Fe K alpha (6.7-6.9 keV), with expected equivalent widths of ~ 10eV. Past X-ray telescopes have not had the combined effective area and spectral resolution to detect such absorption lines. In the next decade, several X-ray telescopes will be launched with the required characteristics to detect these absorption lines (AXAF, Astro-E, Spectrum X-Gamma, and Constellation). We will show that the distribution of equivalent widths derived from a collection of AGN observations is a very sensitive measure of cluster evolution out to z ~ 2. We will also make predictions for the distribution of equivalent widths in AGN samples based on several different cosmological scenarios.

Affiliated with

Also associated with

No associations

Rating

Studying the Evolution of Clusters of Galaxies Through X-Ray Absorption Lines 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 Studying the Evolution of Clusters of Galaxies Through X-Ray Absorption Lines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Studying the Evolution of Clusters of Galaxies Through X-Ray Absorption Lines will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1364585