TY - JOUR
T1 - Search for dark matter annihilation signals from the Galactic Center with the H.E.S.S. Inner Galaxy Survey
AU - the H.E.S.S. Collaboration
AU - Abdalla, H.
AU - Aharonian, F.
AU - Ait Benkhali, F.
AU - Angüner, E. O.
AU - Arcaro, C.
AU - Armand, C.
AU - Armstrong, T.
AU - Ashkar, H.
AU - Backes, M.
AU - Baghmanyan, V.
AU - Barbosa Martins, V.
AU - Barnacka, A.
AU - Barnard, M.
AU - Batzofin, R.
AU - Becherini, Y.
AU - Berge, D.
AU - Bernlöhr, K.
AU - Bi, B.
AU - Böttcher, M.
AU - Boisson, C.
AU - Bolmont, J.
AU - de Bony de Lavergne, M.
AU - Breuhaus, M.
AU - Brose, R.
AU - Brun, F.
AU - Bulik, T.
AU - Bylund, T.
AU - Cangemi, F.
AU - Caroff, S.
AU - Casanova, S.
AU - Catalano, J.
AU - Chambery, P.
AU - Chand, T.
AU - Chen, A.
AU - Cotter, G.
AU - Curyło, M.
AU - Damascene Mbarubucyeye, J.
AU - Davids, I. D.
AU - Davies, J.
AU - Devin, J.
AU - Djannati-Ataï, A.
AU - Dmytriiev, A.
AU - Donath, A.
AU - Doroshenko, V.
AU - Dreyer, L.
AU - Du Plessis, L.
AU - Duffy, C.
AU - Egberts, K.
AU - Einecke, S.
AU - Fegan, S.
N1 - Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0)
PY - 2022/3/18
Y1 - 2022/3/18
N2 - The presence of dark matter (DM) is suggested by a wealth of astrophysical and cosmological measurements. However, its underlying nature is yet unknown. Among the most promising candidates are weakly interacting massive particles (WIMPs): particles with mass and coupling strength at the electroweak scale and thermally-produced in the early universe have a present relic density consistent with that observed today. WIMP self-annihilation would produce Standard Model particles including gamma-rays, which have been long-time recognized as a prime messenger to indirectly detect dark matter signals. The centre of the Milky Way is predicted as the brightest source of DM annihilations. The H.E.S.S. collaboration is currently performing a survey of the inner region of the Milky Way, the Inner Galaxy Survey (IGS), intended to achieve the best sensitivity to faint and diffuse emissions in a region of several degrees around the Galactic Centre. We analyzed 2014-2020 observations taken with the five-telescope array to search for a DM annihilation signal. With the current dataset of about 550 hours, we found no significant excess and therefore derived strong constraints on the velocity-weighted annihilation cross-section. TeV thermal WIMPs can be probed in different annihilation channels.
AB - The presence of dark matter (DM) is suggested by a wealth of astrophysical and cosmological measurements. However, its underlying nature is yet unknown. Among the most promising candidates are weakly interacting massive particles (WIMPs): particles with mass and coupling strength at the electroweak scale and thermally-produced in the early universe have a present relic density consistent with that observed today. WIMP self-annihilation would produce Standard Model particles including gamma-rays, which have been long-time recognized as a prime messenger to indirectly detect dark matter signals. The centre of the Milky Way is predicted as the brightest source of DM annihilations. The H.E.S.S. collaboration is currently performing a survey of the inner region of the Milky Way, the Inner Galaxy Survey (IGS), intended to achieve the best sensitivity to faint and diffuse emissions in a region of several degrees around the Galactic Centre. We analyzed 2014-2020 observations taken with the five-telescope array to search for a DM annihilation signal. With the current dataset of about 550 hours, we found no significant excess and therefore derived strong constraints on the velocity-weighted annihilation cross-section. TeV thermal WIMPs can be probed in different annihilation channels.
M3 - Conference article
AN - SCOPUS:85144609264
SN - 1824-8039
VL - 395
JO - Proceedings of Science
JF - Proceedings of Science
M1 - 511
T2 - 37th International Cosmic Ray Conference, ICRC 2021
Y2 - 12 July 2021 through 23 July 2021
ER -