Correlation Between X-ray And Microwave (sz) Signals From The Warm-hot Intergalactic Medium

Details Correlation Between X-ray And Microwave (sz) Signals From The Warm-hot Intergalactic Medium Correlation Between X-ray And Microwave (sz) Signals From The Warm-hot Intergalactic Medium

May 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21631804g&link_type=abstract

American Astronomical Society, AAS Meeting #216, #318.04; Bulletin of the American Astronomical Society, Vol. 41, p.908

Statistics

Applications

Scientific paper

A large fraction of the low redshift baryons is believed to reside in a warm-hot filamentary gas in the intergalactic medium (WHIM). In the past we have successfully used XMM-Newton data to identify and characterize the WHIM angular signature using the autocorrelation function [Galeazzi 2009, 695, 1127].
Using the output of large scale hydrodynamic simulations we have also investigated the correlation between low energy X-ray emission and SZ effect from WHIM filaments. The largest of the current SZ surveys (with the South Pole Telescope [Ruhl 2004, Proc. SPIE, 5498, 11] and the Atacama Cosmology Telescope [Kosowsky 2004, NAR 47, 939; 2006, NAR 50, 969]) are mapping hundreds of square degrees at arcminute resolution at bands in 100-300 GHz, and have started identifying clusters detected by their SZ signature alone [e.g. Staniszewski 2009, ApJ, 701,32; Hincks 2009, arXiv:0907.0461].
Although the bulk of the total luminosity in the SZ effect is associated with collapsed structures like clusters, our work indicates that a significant fraction comes from unbound objects, mostly from overdense regions, like the WHIM. Due to the unique emission mechanism, the X-ray and SZ correlation provides additional constraints on the structure of the intergalactic gas. Adopting an adiabatic, polytropic model the SZ signal goes as ne1.2, compared with the x-ray emission that goes roughly as ne2 (slightly modified by the cooling function).
In this paper we will discuss the result of our investigation on the correlation between X-ray emission and SZ signals and the implications for current X-ray and SZ observatories. We will also present our preliminary applications using actual data.

Affiliated with

Also associated with

No associations

Rating

Correlation Between X-ray And Microwave (sz) Signals From The Warm-hot Intergalactic Medium 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 Correlation Between X-ray And Microwave (sz) Signals From The Warm-hot Intergalactic Medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Correlation Between X-ray And Microwave (sz) Signals From The Warm-hot Intergalactic Medium will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1890020