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2010MNRAS.403..129Z - Mon. Not. R. Astron. Soc., 403, 129-150 (2010/March-3)
Polarization of X-ray lines from galaxy clusters and elliptical galaxies - a way to measure the tangential component of gas velocity.
ZHURAVLEVA I.V., CHURAZOV E.M., SAZONOV S.Yu., SUNYAEV R.A., FORMAN W. and DOLAG K.
Abstract (from CDS):
We calculate the expected degree of polarization for several patterns of gas motions, including a slow inflow expected in a simple cooling flow model and a fast outflow in an expanding spherical shock wave. In both cases, the effect of non-zero gas velocities is found to be minor. We also calculate the polarization signal for a set of clusters, taken from large-scale structure simulations and evaluate the impact of the gas bulk motions on the polarization signal.
We argue that the expected degree of polarization is within reach of the next generation of space X-ray polarimeters.
Abstract Copyright: © 2010 The Authors. Journal compilation © 2010 RAS
Journal keyword(s): polarization - radiative transfer - scattering - methods: numerical - X-rays: galaxies: clusters
Simbad objects: 7
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