Prospects for annihilating dark matter from M31 and M33 observations with the Cherenkov Telescope Array

被引:1
作者
Michailidis, Miltiadis [1 ]
Marafatto, Lorenzo [2 ]
Malyshev, Denys [1 ]
Iocco, Fabio [3 ,4 ]
Zaharijas, Gabrijela [2 ]
Sergijenko, Olga [5 ,13 ,14 ]
Bernardos, Maria Isabel [6 ,7 ]
Eckner, Christopher [2 ,8 ]
Boyarsky, Alexey [9 ]
Sokolenko, Anastasia [10 ,11 ,12 ]
Santangelo, Andrea [1 ]
机构
[1] Univ Tubingen, Inst Astron & Astrophys Tubingen, Sand 1, D-72076 Tubingen, Germany
[2] Univ Nova Gorica, Ctr Astrophys & Cosmol, Vipavska 13, SI-5000 Nova Gorica, Slovenia
[3] Univ Napoli Federico II, Complesso Univ Monte S Angelo, Dipartimento Fis Ettore Pancini, I-80126 Naples, Italy
[4] Complesso Univ Monte S Angelo, Sez Napoli, INFN, I-80126 Naples, Italy
[5] Taras Shevchenko Natl Univ Kyiv, Astron Observ, Kiev, Ukraine
[6] Univ Padua, Dipartimento Fis & Astron, Padua, Italy
[7] Sez Padova, INFN, Padua, Italy
[8] USMB, LAPTh, CNRS, F-74940 Annecy, France
[9] Leiden Univ, Lorentz Inst, Niels Bohrweg 2, NL-2333 CA Leiden, Netherlands
[10] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA
[11] Fermilab Natl Accelerator Lab, Theoret Astrophys Grp, Batavia, IL 60510 USA
[12] Austrian Acad Sci, Inst High Energy Phys, Nikolsdorfergasse 18, A-1050 Vienna, Austria
[13] Natl Acad Sci Ukraine, Main Astron Observ, Zabolotnoho Str 27, UA-03143 Kiev, Ukraine
[14] AGH Univ Sci & Technol, Space Technol Ctr, Aleja Mickiewicza 30, PL-30059 Krakow, Poland
来源
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2023年 / 08期
基金
英国科学技术设施理事会; 美国国家科学基金会; 瑞士国家科学基金会;
关键词
dark matter experiments; dark matter theory; gamma ray experiments; LARGE-AREA TELESCOPE; GAMMA-RAY EMISSION; MILKY-WAY; SPHERICAL GALAXIES; SEARCH; SIGNALS; CLUMPY; HALOS; CONSTRAINTS; EVOLUTION;
D O I
10.1088/1475-7516/2023/08/073
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
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 (a -v) � 5 & BULL; 10-25 cm3 s-1 for the 7-+T- 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.
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页数:38
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