| Title: | A search for dark matter in Triangulum II with the MAGIC telescopes |
Authors: | Acciari, V. A.
Ansoldi, S.
ANTONELLI, Lucio Angelo
Arbet Engels, A.
Baack, D.
Babić, A.
Banerjee, B.
Barres de Almeida, U.
Barrio, J. A.
Becerra González, J.
Bednarek, W.
Mannheim, K.
Maraschi, L.
Mariotti, M.
Martínez, M.
Mazin, D.
Mićanović, S.
Miceli, D.
Miener, T.
Minev, M.
Miranda, J. M.
Bellizzi, L.
Mirzoyan, R.
Molina, E.
Moralejo, A.
Morcuende, D.
Moreno, V.
Moretti, E.
Munar-Adrover, P.
Neustroev, V.
Nigro, C.
Nilsson, K.
Bernardini, E.
Ninci, D.
Nishijima, K.
Noda, K.
Nogués, L.
Nozaki, S.
PAIANO, Simona
Palacio, J.
Palatiello, M.
Paneque, D.
Paoletti, R.
Berti, A.
Paredes, J. M.
Peñil, P.
Peresano, M.
PERSIC, Massimo
Prada Moroni, P. G.
PRANDINI, ELISA
Puljak, I.
Rhode, W.
Ribó, M.
Rico, J.
Besenrieder, J.
Righi, C.
Rugliancich, A.
Saha, L.
Sahakyan, N.
Saito, T.
Sakurai, S.
Satalecka, K.
SATURNI, FRANCESCO GABRIELE
Schmidt, K.
Schweizer, T.
Bhattacharyya, W.
Sitarek, J.
Šnidarić, I.
Sobczynska, D.
Somero, A.
STAMERRA, Antonio
Strom, D.
Suda, Y.
Surić, T.
Takahashi, M.
Tavecchio, F.
BIGONGIARI, Ciro
Temnikov, P.
Terzić, T.
Teshima, M.
Torres-Albà, N.
Tosti, L.
Vagelli, V.
van Scherpenberg, J.
Vanzo, G.
Vazquez Acosta, M.
Vigorito, C. F.
Biland, A.
Vitale, V.
Vovk, I.
Will, M.
Zarić, D.
MAGIC Collaboration
Blanch, O.
Bonnoli, G.
Bošnjak, Ž.
Busetto, G.
Carosi, R.
Ceribella, G.
Chai, Y.
Chilingarian, A.
Cikota, S.
Colak, S. M.
Colin, U.
Colombo, E.
Contreras, J. L.
Cortina, J.
COVINO, Stefano
D'Elia, V.
da Vela, P.
Dazzi, F.
de Angelis, A.
de Lotto, B.
Delfino, M.
Delgado, J.
Depaoli, D.
di Pierro, F.
di Venere, L.
Do Souto Espiñeira, E.
Dominis Prester, D.
Donini, A.
Dorner, D.
Doro, M.
Elsaesser, D.
Fallah Ramazani, V.
Fattorini, A.
Ferrara, G.
Fidalgo, D.
Foffano, L.
Fonseca, M. V.
Font, L.
Fruck, C.
Fukami, S.
García López, R. J.
Garczarczyk, M.
Gasparyan, S.
Gaug, M.
Giglietto, N.
Giordano, F.
Gliwny, P.
Godinović, N.
Green, D.
GREEN, JARRED GERSHON
Guberman, D.
Hadasch, D.
Hahn, A.
Herrera, J.
Hoang, J.
Hrupec, D.
Hütten, M.
Inada, T.
Inoue, S.
Ishio, K.
Iwamura, Y.
Jouvin, L.
Kerszberg, D.
Kubo, H.
Kushida, J.
Lamastra, A.
Lelas, D.
Leone, F.
Lindfors, E.
LOMBARDI, Saverio
Longo, F.
López, M.
López-Coto, R.
López-Oramas, A.
Loporchio, S.
Machado de Oliveira Fraga, B.
Maggio, C.
Majumdar, P.
Makariev, M.
Mallamaci, M.
Maneva, G.
Manganaro, M. |
Issue Date: | 2020 |
Journal: | PHYSICS OF THE DARK UNIVERSE |
Number: | 28 |
First Page: | 100529 |
Abstract: | We present the first results from very-high-energy observations of the dwarf spheroidal satellite candidate Triangulum II with the MAGIC telescopes from 62.4 h of good-quality data taken between August 2016 and August 2017. We find no gamma-ray excess in the direction of Triangulum II, and upper limits on both the differential and integral gamma-ray flux are presented. Currently, the kinematics of Triangulum II are affected by large uncertainties leading to a bias in the determination of the properties of its dark matter halo. Using a scaling relation between the annihilation J-factor and heliocentric distance of well-known dwarf spheroidal galaxies, we estimate an annihilation J-factor for Triangulum II for WIMP dark matter of log [J<SUB>ann</SUB>(0 . 5 °) ∕GeV<SUP>2</SUP>cm<SUP>-5</SUP> ] = 19 . 35 ± 0 . 37 . We also derive a dark matter density profile for the object relying on results from resolved simulations of Milky Way sized dark matter halos. We obtain 95% confidence-level limits on the thermally averaged annihilation cross section for WIMP annihilation into various Standard Model channels. The most stringent limits are obtained in the msubsup> τ<SUP>-</SUP>τ<SUP>+</SUP> final state, where a cross section for annihilation down to «σ<SUB>ann</SUB> v » = 3 . 05 × 10<SUP>-24</SUP> cm<SUP>3</SUP> s<SUP>-1</SUP> is excluded. |
URI: | http://hdl.handle.net/20.500.12386/35911 |
URL: | https://www.sciencedirect.com/science/article/pii/S221268641930336X?via%3Dihub |
ISSN: | 2212-6864 |
DOI: | 10.1016/j.dark.2020.100529 |
Bibcode ADS: | 2020PDU....2800529A |
Fulltext: | open |
| Appears in Collections: | 1.01 Articoli in rivista
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