Speaker
Dmytro Iakubovskyi
(Bogolyubov Institute for Theoretical Physics, Kiev, Ukraine)
Description
A number of observational studies claim detection or non-detection of the extra line in X-ray spectra of various cosmic objects dominated by dark matter -- gravitationally interacting substance that constitutes the major fraction of non-relativistic matter in the Universe. In this talk I summarize the results of these studies and especially the status of the detection of new emission line at ~3.55 keV in spectra of nearby galaxies and galaxy clusters, overview possible interpretations of this line, including an intriguing connection with radiatively decaying dark matter, and show directions achievable with existing and upcoming X-ray cosmic missions, such as Astro-H and Micro-X.
Primary author
Dmytro Iakubovskyi
(Bogolyubov Institute for Theoretical Physics, Kiev, Ukraine)
