Search for Dark Matter Annihilation Signals from Unidentified Fermi-LAT Objects with H.E.S.S.

Bulik, Tomasz; Abdalla, H.; Aharonian, F.; Benkhali, F. Ait; Angüner, E. O.; Arcaro, C.; Armand, C.; Armstrong, T.; Ashkar, H.; Backes, M.; Baghmanyan, V.; Barbosa-Martins, V.; Barnacka, A.; Barnard, M.; Becherini, Y.; Berge, D.; Bernlöhr, K.; Bi, B.; Böttcher, M.; Boisson, C.; Bolmont, J.; Lavergne, M. de Bony de; Breuhaus, M.; Brose, R.; Brun, F.; Bylund, T.; Cangemi, F.; Caroff, S.; Casanova, S.; Chambery, P.; Catalano, J.; Chand, T.; Chen, A.; Cotter, G.; Curyło, Małgorzata; Dalgleish, H.; Mbarubucyeye, J. Damascene; Davids, I. D.; Davies, J.; Devin, J.; Djannati-Ataï, A.; Dmytriiev, A.; Donath, A.; Doroshenko, V.; Dreyer, L.; Plessis, L. du; Duffy, C.; Egberts, K.; Einecke, S.; Emery, G.; Ernenwein, J. -P.; Feijen, K.; Fegan, S.; Fiasson, A.; Clairfontaine, G. Fichet de; Fontaine, G.; Funk, S.; Füssling, M.; Gabici, S.; Gallant, Y. A.; Ghafourizade, S.; Giavitto, G.; Giunti, L.; Glawion, D.; Glicenstein, J. F.; Grondin, M. -H.; Hattingh, S.; Haupt, M.; Hermann, G.; Hinton, J. A.; Hofmann, W.; Hoischen, C.; Holch, T. L.; Holler, M.; Hörbe, M.; Horns, D.; Huang, Z.; Huber, D.; Jamrozy, M.; Jankowsky, D.; Jankowsky, F.; Joshi, V.; Jung-Richardt, I.; Kasai, E.; Katarzyński, K.; Katz, U.; Khangulyan, D.; Khélifi, B.; Klepser, S.; Kluźniak, W.; Komin, Nu.; Konno, R.; Kosack, K.; Kostunin, D.; Kreter, M.; Mezek, G. Kukec; Kundu, A.; Lamanna, G.; Stum, S. Le; Lemière, A.; Lemoine-Goumard, M.; Lenain, J. -P.; Leuschner, F.; Levy, C.; Luashvili, A.; Lohse, T.; Lypova, I.; Mackey, J.; Majumdar, J.; Malyshev, D.; Marandon, V.; Marchegiani, P.; Marcowith, A.; Mares, A.; Martí-Devesa, G.; Marx, R.; Maurin, G.; Meintjes, P. J.; Meyer, M.; Mitchell, A.; Moderski, R.; Mohrmann, L.; Montanari, A.; Moore, C.; Morris, P.; Moulin, E.; Muller, J.; Murach, T.; Nakashima, K.; Nayerhoda, A.; Naurois, M. de; Ndiyavala, H.; Niemiec, J.; Noel, A.; Oberholzer, L.; O'Brien, P.; Ohm, S.; Olivera-Nieto, L.; Wilhelmi, E. de Ona; Ostrowski, M.; Panter, M.; Panny, S.; Parsons, R. D.; Peron, G.; Pita, S.; Poireau, V.; Prokhorov, D. A.; Prokoph, H.; Pühlhofer, G.; Punch, M.; Quirrenbach, A.; Reichherzer, P.; Reimer, A.; Reimer, O.; Remy, Q.; Renaud, M.; Rieger, F.; Romoli, C.; Rowell, G.; Rudak, B.; Ricarte, H. Rueda; Ruiz-Velasco, E.; Sahakian, V.; Sailer, S.; Salzmann, H.; Sanchez, D. A.; Santangelo, A.; Sasaki, M.; Schäfer, J.; Schüssler, F.; Schutte, H. M.; Schwanke, U.; Senniappan, M.; Seyffert, A. S.; Shapopi, J. N. S.; Shiningayamwe, K.; Simoni, R.; Sinha, A.; Spackman, H.; Sol, H.; Specovius, A.; Spencer, S.; Spir-Jacob, M.; Stawarz, Ł.; Sun, L.; Steenkamp, R.; Stegmann, C.; Steinmassl, S.; Steppa, C.; Takahashi, T.; Tanaka, T.; Tavernier, T.; Taylor, A. M.; Terrier, R.; Thorpe-Morgan, C.; Thiersen, J. H. E.; Tluczykont, M.; Tomankova, L.; Tsirou, M.; Tsuji, M.; Tuffs, R.; Uchiyama, Y.; Walt, D. J. van der; Eldik, C. van; Rensburg, C. van; Soelen, B. van; Vasileiadis, G.; Veh, J.; Venter, C.; Vincent, P.; Viana, A.; Vink, J.; Völk, H. J.; Wagner, S. J.; Werner, F.; White, R.; Wierzcholska, A.; Wong, Yu Wun; Yassin, H.; Yusafzai, A.; Zacharias, M.; Zanin, R.; Zargaryan, D.; Zdziarski, A. A.; Zech, A.; Zhu, S. J.; Zmija, A.; Zorn, J.; Zouari, S.; Żywucka, N.

doi:10.3847/1538-4357/ABFF59

Artykuł w czasopiśmie

Licencja

Search for Dark Matter Annihilation Signals from Unidentified Fermi-LAT Objects with H.E.S.S.

DOI

10.3847/1538-4357/ABFF59

Autor

Bulik, Tomasz

Abdalla, H.

Aharonian, F.

Benkhali, F. Ait

Angüner, E. O.

Arcaro, C.

Armand, C.

Armstrong, T.

Ashkar, H.

Backes, M.

Data publikacji

2021

Abstrakt (EN)

Cosmological N-body simulations show that Milky Way-sized galaxies harbor a population of unmerged dark matter (DM) subhalos. These subhalos could shine in gamma-rays and eventually be detected in gamma-ray surveys as unidentified sources. We performed a thorough selection among unidentified Fermi-Large Area Telescope Objects (UFOs) to identify them as possible tera-electron-volt-scale DM subhalo candidates. We search for very-high-energy (E ≳ 100 GeV) gamma-ray emissions using H.E.S.S. observations toward four selected UFOs. Since no significant very-high-energy gamma-ray emission is detected in any data set of the four observed UFOs or in the combined UFO data set, strong constraints are derived on the product of the velocity-weighted annihilation cross section ⟨σv⟩ by the J factor for the DM models. The 95% confidence level observed upper limits derived from combined H.E.S.S. observations reach ⟨σv⟩J values of 3.7 × 10-5 and 8.1 × 10-6 GeV2 cm-2 s-1 in the W+W- and τ+τ- channels, respectively, for a 1 TeV DM mass. Focusing on thermal weakly interacting massive particles, the H.E.S.S. constraints restrict the J factors to lie in the range 6.1 × 1019-2.0 × 1021 GeV2 cm-5 and the masses to lie between 0.2 and 6 TeV in the W+W- channel. For the τ+τ- channel, the J factors lie in the range 7.0 × 1019-7.1 × 1020 GeV2 cm-5 and the masses lie between 0.2 and 0.5 TeV. Assuming model-dependent predictions from cosmological N-body simulations on the J-factor distribution for Milky Way-sized galaxies, the DM models with masses >0.3 TeV for the UFO emissions can be ruled out at high confidence level.

Dyscyplina PBN

astronomia

Czasopismo

Astrophysical Journal

Tom

918

Zeszyt

1

Strony od-do

17

ISSN

0004-637X

Data udostępnienia w otwartym dostępie

2021-07-15

Link do źródła

http://adsabs.harvard.edu/abs/2021ApJ...918...17A

Licencja otwartego dostępu

Inna

Licencja

Search for Dark Matter Annihilation Signals from Unidentified Fermi-LAT Objects with H.E.S.S.

Opcje

DOI

Abstrakt (EN)