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Sensitivity of CTA ...
Sensitivity of CTA to gamma-ray emission from the Perseus galaxy cluster
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- Pérez-Romero, Judit (author)
- Autonomous University of Madrid
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- Abdalla, H. (author)
- North-West University
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- Carlile, C. (author)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
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- Dravins, D. (author)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
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- Zmija, A. (author)
- Friedrich-Alexander University Erlangen-Nürnberg
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(creator_code:org_t)
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- Trieste, Italy : Sissa Medialab, 2022
- 2022
- English.
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In: 37th International Cosmic Ray Conference (ICRC2021) - GAI - Gamma Ray Indirect. - Trieste, Italy : Sissa Medialab. - 1824-8039. ; 395
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Abstract
Subject headings
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- 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. Our DM modelling 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. © Copyright owned by the author(s) under the terms of the Creative Commons.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- Cosmic rays
- Cosmology
- Galaxies
- Gamma rays
- Tellurium compounds
- Cherenkov telescope arrays
- Current status
- Dark matter
- Dark matter particles
- Galaxies clusters
- Gamma-ray emission
- Induced component
- Intracluster medium
- Massive particles
- Science projects
- Annihilation
Publication and Content Type
- kon (subject category)
- ref (subject category)
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