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Title:Sensitivity of CTA to gamma-ray emission from the Perseus galaxy cluster
Authors:ID Pérez Romero, Judit, IFT UAM-CSIC (Author), et al.
Files:URL https://pos.sissa.it/395/546/pdf
 
.pdf RAZ_Perez-Romero_Judit_i0.pdf (1,92 MB)
MD5: 46D8F1F6E7930FD4034754CA72BB2C91
 
Language:English
Work type:Not categorized
Typology:1.08 - Published Scientific Conference Contribution
Organization:UNG - University of Nova Gorica
Abstract: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.
Keywords:dark matter, gamma-ray astronomy, galaxy clusters, cosmic rays and astroparticles
PID:20.500.12556/RUNG-7900 New window
COBISS.SI-ID:139672835 New window
NUK URN:URN:SI:UNG:REP:XYWRWLPJ
Publication date in RUNG:27.01.2023
Views:1121
Downloads:15
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