Research output: Contribution to journal › Article › peer-review
On the Possible Asymmetry in Gamma Rays from Andromeda Due to Inverse Compton Scattering of Star Light on Electrons from Dark Matter Annihilation. / Belotsky, Konstantin; Solovyov, Maxim.
In: Galaxies, Vol. 11, No. 6, 109, 12.2023.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - On the Possible Asymmetry in Gamma Rays from Andromeda Due to Inverse Compton Scattering of Star Light on Electrons from Dark Matter Annihilation
AU - Belotsky, Konstantin
AU - Solovyov, Maxim
N1 - This work was supported by the Ministry of Science and Higher Education of the Russian Federation by project No. FSWU-2023-0068 “Fundamental and applied research of cosmic rays”.
PY - 2023/12
Y1 - 2023/12
N2 - Dark matter is a popular candidate to a new source of primary-charged particles, especially positrons in cosmic rays, which are proposed to account for observable anomalies. While this hypothesis of decaying or annihilating DM is mostly applied for our Galaxy, it could possibly lead to some interesting phenomena when applied for the other ones. In this work, we look into the hypothetical asymmetry in gamma radiation from the upper and lower hemisphere of the dark matter halo of the Andromeda galaxy due to inverse Compton scattering of starlight on the DM-produced electrons and positrons. While our 2D toy model raises expectations for the possible effect, a more complex approach gives negligible effect for the dark halo case, but shows some prospects for a dark disk model.
AB - Dark matter is a popular candidate to a new source of primary-charged particles, especially positrons in cosmic rays, which are proposed to account for observable anomalies. While this hypothesis of decaying or annihilating DM is mostly applied for our Galaxy, it could possibly lead to some interesting phenomena when applied for the other ones. In this work, we look into the hypothetical asymmetry in gamma radiation from the upper and lower hemisphere of the dark matter halo of the Andromeda galaxy due to inverse Compton scattering of starlight on the DM-produced electrons and positrons. While our 2D toy model raises expectations for the possible effect, a more complex approach gives negligible effect for the dark halo case, but shows some prospects for a dark disk model.
KW - Andromeda galaxy
KW - cosmic gamma-radiation
KW - dark matter
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85180475388&origin=inward&txGid=16c4442508e92851cb4d914e13c249ab
UR - https://www.mendeley.com/catalogue/fa78b878-34e5-3c03-b2cc-c4d20068329a/
U2 - 10.3390/galaxies11060109
DO - 10.3390/galaxies11060109
M3 - Article
VL - 11
JO - Galaxies
JF - Galaxies
SN - 2075-4434
IS - 6
M1 - 109
ER -
ID: 59543698