SIMBAD references

2018MNRAS.479..348C - Mon. Not. R. Astron. Soc., 479, 348-352 (2018/September-1)

Searches for 3.5 keV absorption features in cluster AGN spectra.


Abstract (from CDS):

We investigate possible evidence for a spectral dip around 3.5 keV in central cluster active galactic nuclei, motivated by previous results for archival Chandra observations of the Perseus cluster and the general interest in novel spectral features around 3.5 keV that may arise from dark matter physics. We use two deep Chandra observations of the Perseus and Virgo clusters that have recently been made public. In both cases, mild improvements in the fit (Δχ2 = 4.2 and Δχ2 = 2.5) are found by including such a dip at 3.5 keV into the spectrum. A comparable result (Δχ2 = 6.5) is found reanalysing archival on-axis Chandra ACIS-S observations of the centre of the Perseus cluster.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): astroparticle physics - elementary particles - galaxies: active - galaxies: nuclei - dark matter

Simbad objects: 11

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