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Title: Prospects for annihilating dark matter from M31 and M33 observations with the Cherenkov Telescope Array Authors: ID Michailidis, Miltiadis (Author) ID Marafatto, Lorenzo (Author) ID Malyshev, Denys (Author) ID Iocco, Fabio (Author) ID Zaharijas, Gabrijela (Author) ID Sergijenko, Olga (Author) ID Bernardos, Maria Isabel (Author) ID Eckner, Christopher (Author) ID Boyarsky, Alexey (Author) ID Sokolenko, Anastasia (Author) ID Santangelo, Andrea (Author) Files: https://iopscience.iop.org/article/10.1088/1475-7516/2023/08/073/pdf   https://iopscience.iop.org/article/10.1088/1475-7516/2023/08/073   https://iopscience.iop.org/article/10.1088/1475-7516/2023/08/073/pdf   This document has even more files. Complete list of files is available below. Language: English Work type: Unknown Typology: 1.01 - Original Scientific Article Organization: UNG - University of Nova Gorica Abstract: Abstract M31 and M33 are the closest spiral galaxies and the largest members (together with the Milky Way) of the Local group, which makes them interesting targets for indirect dark matter searches. In this paper we present studies of the expected sensitivity of the Cherenkov Telescope Array (CTA) to an annihilation signal from weakly interacting massive particles from M31 and M33. We show that a 100 h long observation campaign will allow CTA to probe annihilation cross-sections up to 〈συ〉 ≈ 5·10-25 cm3 s-1 for the τ + τ - annihilation channel (for M31, at a DM mass of 0.3 TeV), improving the current limits derived by HAWC by up to an order of magnitude. We present an estimate of the expected CTA sensitivity, by also taking into account the contributions of the astrophysical background and other possible sources of systematic uncertainty. We also show that CTA might be able to detect the extended emission from the bulge of M31, detected at lower energies by the Fermi/LAT. Keywords: dark matter, gamma rays, Cherenkov Telescope Array, i Publication date: 01.08.2023 Year of publishing: 2023 Number of pages: str. 1-35 Numbering: Vol. 2023, no. 8, [article no.] 073 PID: 20.500.12556/RUNG-9774  COBISS.SI-ID: 222008323  UDC: 52 ISSN on article: 1475-7516 DOI: 10.1088/1475-7516/2023/08/073  NUK URN: URN:SI:UNG:REP:QHLCPTUE Publication date in RUNG: 13.01.2025 Views: 234 Downloads: 5 Metadata:    Cite this work Plain text BibTeX EndNote XML EndNote/Refer RIS ABNT ACM Ref AMA APA Chicago 17th Author-Date Harvard IEEE ISO 690 MLA Vancouver : Copy citation

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Record is a part of a journal

Title:	Journal of cosmology and astroparticle physics
Publisher:	Institute of Physics Pub.
ISSN:	1475-7516
COBISS.SI-ID:	389627

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