Other
Scientific paper
Mar 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003head....7.3501p&link_type=abstract
American Astronomical Society, HEAD meeting #7, #35.01; Bulletin of the American Astronomical Society, Vol. 35, p.651
Other
Scientific paper
We present XMM-Newton observations of 14 X-ray clusters and groups of galaxies. We emphasize several new developments in the study of the soft X-ray spectrum of cooling-flows in relation to the soft X-ray cooling-flow problem. Although there is some uncertainty in the expected mass deposition rate for any individual cluster, we show that high resolution RGS spectra robustly demonstrate that the expected line emission from the isobaric cooling-flow model is absent below 1/3 of the background temperature rather than below a fixed temperature in all clusters. Furthermore, we demonstrate that the best-resolved cluster spectra are inconsistent with the predicted shape of the differential luminosity distribution and the measured distribution is tilted to higher temperatures. Combining this result with EPIC spatially-resolved spectro-photometry, we show that the steep differential luminosity distribution is partly a result of the global temperature gradients, but also may be partly due to a intrinsically steep and locally non-isothermal temperature distribution. These observations create several fine-tuning challenges for current theoretical explanations for the soft X-ray cooling-flow problem. Finally, we present a novel Monte Carlo analysis method which results in a temperature deconvolution of a Chandra HETG observation of the galaxy cluster, RX J1347.5-1145.
Jernigan Garret J.
Kaastra Jelle S.
Kahn Steve M.
Paerels Frits B. S.
Peterson James R.
No associations
LandOfFree
X-ray Spectroscopic Constraints on Cooling-Flow Models 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 X-ray Spectroscopic Constraints on Cooling-Flow Models, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and X-ray Spectroscopic Constraints on Cooling-Flow Models will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1000637