GINGA LAC and Einstein SSS X-ray Spectral Evidence of Abundance Gradients in Galaxy Clusters

Details GINGA LAC and Einstein SSS X-ray Spectral Evidence of Abundance Gradients in Galaxy Clusters GINGA LAC and Einstein SSS X-ray Spectral Evidence of Abundance Gradients in Galaxy Clusters

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aas...183.5301w&link_type=abstract

American Astronomical Society, 183rd AAS Meeting, #53.01; Bulletin of the American Astronomical Society, Vol. 25, p.1374

Astronomy and Astrophysics

Astronomy

Scientific paper

We jointly analyzed the Ginga LAC and Einstein SSS spectra of four cooling flow clusters: A496, A1795, A2142 & A2199. We took advantage of the two instruments' different fields of view (6 arcmin diameter for the SSS, 1times 2 degrees for the LAC) to determine whether there were spatial gradients in temperature, abundances and X-ray absorbing column densities. Each cluster has firm evidence of a relatively cool central component. The inclusion of such cool components in the joint spectral analysis leads to somewhat higher global temperature determinations than are derived from the higher energy LAC data alone. The abundances appear to be centrally enhanced in at least two (A496, A2142) and possibly three (A2199) of the four clusters. In these cases, the central cool component typically has abundances which exceed solar values. We also confirm the presence of large amounts of cold absorbing matter in three of the four clusters (A496, A1795 & A2199) and show that it is likely to be intrinsic to the cluster cooling flows.

Affiliated with

Also associated with

No associations

Rating

GINGA LAC and Einstein SSS X-ray Spectral Evidence of Abundance Gradients in Galaxy Clusters 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 GINGA LAC and Einstein SSS X-ray Spectral Evidence of Abundance Gradients in Galaxy Clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and GINGA LAC and Einstein SSS X-ray Spectral Evidence of Abundance Gradients in Galaxy Clusters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-779115