Polarization of resonance X-ray lines from clusters of galaxies

  title={Polarization of resonance X-ray lines from clusters of galaxies},
  author={S. S. Yu},
As is known, resonant scattering can distort the surface-brightness profiles of clusters of galaxies in X-ray lines. We demonstrate that the scattered line emission should be polarized and possibly detectable with near-future X-ray polarimeters. Spectrallyresolved mapping of a galaxy cluster in polarized X-rays could provide valuable independent information on the physical conditions, in particular element abundances and the characteristic velocity of small-scale turbulent motions, in the… CONTINUE READING
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