PoS - Proceedings of Science
Volume 395 - 37th International Cosmic Ray Conference (ICRC2021) - DM - Dark Matter
Sensitivity of CTA to gamma-ray emission from the Perseus galaxy cluster
J. Pérez-Romero*  on behalf of the CTA Consortium
Full text: pdf
Pre-published on: July 07, 2021
Published on: March 18, 2022
In these proceedings we summarize the current status of the study of the sensitivity of the
Cherenkov Telescope Array (CTA) to detect diffuse gamma-ray emission from the Perseus galaxy
cluster. Gamma-ray emission is expected in galaxy clusters both from interactions of cosmic
rays (CR) with the intra-cluster medium, or as a product of annihilation or decay of dark matter
(DM) particles in case they are weakly interactive massive particles (WIMPs). The observation of
Perseus constitutes one of the Key Science Projects to be carried out by the CTA Consortium. In
this contribution, we focus on the DM-induced component of the flux. OurDMmodelling includes
the substructures we expect in the main halo which will boost the annihilation signal significantly.
We adopt an ON/OFF observation strategy and simulate the expected gamma-ray signals. Finally
we compute the expected CTA sensitivity using a likelihood maximization analysis including the
most recent CTA instrument response functions. In absence of signal, we show that CTA will
allow us to provide stringent and competitive constraints on TeV DM, especially for the case of
DM decay.
DOI: https://doi.org/10.22323/1.395.0546
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.