A search for dark matter in Triangulum II with the MAGIC telescopes

Acciari, V. A.V. A.AcciariAnsoldi, S.S.AnsoldiANTONELLI, Lucio AngeloLucio AngeloANTONELLIArbet Engels, A.A.Arbet EngelsBaack, D.D.BaackBabić, A.A.BabićBanerjee, B.B.BanerjeeBarres de Almeida, U.U.Barres de AlmeidaBarrio, J. A.J. A.BarrioBecerra González, J.J.Becerra GonzálezBednarek, W.W.BednarekChilingarian, A.A.ChilingarianCikota, S.S.CikotaColak, S. M.S. M.ColakColin, U.U.ColinColombo, E.E.ColomboContreras, J. L.J. L.ContrerasCortina, J.J.CortinaCOVINO, StefanoStefanoCOVINOD'Elia, V.V.D'Eliada Vela, P.P.da VelaMannheim, K.K.MannheimDAZZI, FrancescoFrancescoDAZZIde Angelis, A.A.de Angelisde Lotto, B.B.de LottoDelfino, M.M.DelfinoDelgado, J.J.DelgadoDepaoli, D.D.Depaolidi Pierro, F.F.di Pierrodi Venere, L.L.di VenereDo Souto Espiñeira, E.E.Do Souto EspiñeiraDominis Prester, D.D.Dominis PresterMaraschi, L.L.MaraschiDonini, A.A.DoniniDorner, D.D.DornerDoro, M.M.DoroElsaesser, D.D.ElsaesserFallah Ramazani, V.V.Fallah RamazaniFattorini, A.A.FattoriniFerrara, G.G.FerraraFidalgo, D.D.FidalgoFoffano, L.L.FoffanoFonseca, M. V.M. V.FonsecaMariotti, M.M.MariottiFont, L.L.FontFruck, C.C.FruckFukami, S.S.FukamiGarcía López, R. J.R. J.García LópezGarczarczyk, M.M.GarczarczykGasparyan, S.S.GasparyanGaug, M.M.GaugGiglietto, N.N.GigliettoGiordano, F.F.GiordanoGliwny, P.P.GliwnyMartínez, M.M.MartínezGodinović, N.N.GodinovićGreen, D.D.GreenGREEN, JARRED GERSHONJARRED GERSHONGREENGuberman, D.D.GubermanHadasch, D.D.HadaschHahn, A.A.HahnHerrera, J.J.HerreraHoang, J.J.HoangHrupec, D.D.HrupecHütten, M.M.HüttenMazin, D.D.MazinInada, T.T.InadaInoue, S.S.InoueIshio, K.K.IshioIwamura, Y.Y.IwamuraJouvin, L.L.JouvinKerszberg, D.D.KerszbergKubo, H.H.KuboKushida, J.J.KushidaLamastra, A.A.LamastraLelas, D.D.LelasMićanović, S.S.MićanovićLeone, F.F.LeoneLindfors, E.E.LindforsLOMBARDI, SaverioSaverioLOMBARDILongo, F.F.LongoLópez, M.M.LópezLópez-Coto, R.R.López-CotoLópez-Oramas, A.A.López-OramasLoporchio, S.S.LoporchioMachado de Oliveira Fraga, B.B.Machado de Oliveira FragaMaggio, C.C.MaggioMiceli, D.D.MiceliMajumdar, P.P.MajumdarMakariev, M.M.MakarievMallamaci, M.M.MallamaciManeva, G.G.ManevaManganaro, M.M.ManganaroMiener, T.T.MienerMinev, M.M.MinevMiranda, J. M.J. M.MirandaBellizzi, L.L.BellizziMirzoyan, R.R.MirzoyanMolina, E.E.MolinaMoralejo, A.A.MoralejoMorcuende, D.D.MorcuendeMoreno, V.V.MorenoMoretti, E.E.MorettiMunar-Adrover, P.P.Munar-AdroverNeustroev, V.V.NeustroevNigro, C.C.NigroNilsson, K.K.NilssonBernardini, E.E.BernardiniNinci, D.D.NinciNishijima, K.K.NishijimaNoda, K.K.NodaNogués, L.L.NoguésNozaki, S.S.NozakiPAIANO, SimonaSimonaPAIANOPalacio, J.J.PalacioPalatiello, M.M.PalatielloPaneque, D.D.PanequePaoletti, R.R.PaolettiBerti, A.A.BertiParedes, J. M.J. M.ParedesPeñil, P.P.PeñilPeresano, M.M.PeresanoPERSIC, MassimoMassimoPERSICPrada Moroni, P. G.P. G.Prada MoroniPRANDINI, ELISAELISAPRANDINIPuljak, I.I.PuljakRhode, W.W.RhodeRibó, M.M.RibóRico, J.J.RicoBesenrieder, J.J.BesenriederRighi, C.C.RighiRugliancich, A.A.RugliancichSaha, L.L.SahaSahakyan, N.N.SahakyanSaito, T.T.SaitoSakurai, S.S.SakuraiSatalecka, K.K.SataleckaSATURNI, FRANCESCO GABRIELEFRANCESCO GABRIELESATURNISchmidt, K.K.SchmidtSchweizer, T.T.SchweizerBhattacharyya, W.W.BhattacharyyaSitarek, J.J.SitarekŠnidarić, I.I.ŠnidarićSobczynska, D.D.SobczynskaSomero, A.A.SomeroSTAMERRA, AntonioAntonioSTAMERRAStrom, D.D.StromSuda, Y.Y.SudaSurić, T.T.SurićTakahashi, M.M.TakahashiTavecchio, F.F.TavecchioBIGONGIARI, CiroCiroBIGONGIARITemnikov, P.P.TemnikovTerzić, T.T.TerzićTeshima, M.M.TeshimaTorres-Albà, N.N.Torres-AlbàTosti, L.L.TostiVagelli, V.V.Vagellivan Scherpenberg, J.J.van ScherpenbergVanzo, G.G.VanzoVazquez Acosta, M.M.Vazquez AcostaVigorito, C. F.C. F.VigoritoBiland, A.A.BilandVitale, V.V.VitaleVovk, I.I.VovkWill, M.M.WillZarić, D.D.ZarićMAGIC CollaborationBlanch, O.O.BlanchBonnoli, G.G.BonnoliBošnjak, Ž.Ž.BošnjakBusetto, G.G.BusettoCarosi, R.R.CarosiCeribella, G.G.CeribellaChai, Y.Y.Chai2025-02-122025-02-1220202212-6864http://hdl.handle.net/20.500.12386/35911We 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 [Jann(0 . 5 °) ∕GeV2cm-5 ] = 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-τ+ final state, where a cross section for annihilation down to «σann v » = 3 . 05 × 10-24 cm3 s-1 is excluded.ELETTRONICOenA search for dark matter in Triangulum II with the MAGIC telescopesArticle10.1016/j.dark.2020.100529https://www.sciencedirect.com/science/article/pii/S221268641930336X?via%3Dihub2020PDU....2800529AFIS/05 - ASTRONOMIA E ASTROFISICAERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_10 High energy and particle astronomy – X-rays, cosmic rays, gamma rays, neutrinos