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EnglishThe nearby dwarf spheroidal galaxy Draco, with its high mass to light ratio, is one of the most auspicious targets for indirect dark matter (DM) searches. Annihilation of hypothetical DM particles can result in high-energy gamma-rays, e. g., from neutralino annihilation in the supersymmetric framework. A search for a possible DM signal originating from Draco was performed with the MAGIC telescope during 2007. Analysis of the data results in a flux upper limit (2 sigma) of 1.1 x 10(-11) photons cm(-2) s(-1) for photon energies above 140 GeV, assuming a pointlike source. A comparison with predictions from supersymmetric models is also given. While our results do not constrain the mSUGRA phase parameter space, a very high flux enhancement can be ruled out.
Upper limit for gamma-ray emission above 140 GeV from the dwarf spheroidal galaxy Draco / Albert J; Aliu E; Anderhub H; Antoranz P; Backes M; Baixeras C; Barrio JA; Bartko H; Bastieri D; Becker JK; Bednarek W; Berger K; Bigongiari C; Biland A; Bock RK; Bordas P; Bosch-Ramon V; Bretz T; Britvitch I; Camara M; Carmona E; Chilingarian A; Commichau S; Contreras JL; Cortina J; Costado MT; Curtef V; Danielyan V; Dazzi F; De Angelis A; Delgado C; de los Reyes R; De Lotto B; De Maria M; De Sabata F; Dorner D; Doro M; Errando M; Fagiolini M; Ferenc D; Fernandez E; Firpo R; Fonseca MV; Font L; Fuchs M; Galante N; Garcia-Lopez RJ; Garczarczyk M; Gaug M; Goebel F; Hakobyan D; Hayashida M; Hengstebeck T; Herrero A; Hohne D; Hose J; Huber S; Hsu CC; Jacon P; Jogler T; Kosyra R; Kranich D; Laille A; Lindfors E; Lombardi S; Longo F; Lopez M; Lorenz E; Majumdar P; Maneva G; Mankuzhiyil N; Mannheim K; Mariotti M; Martinez M; Mazin D; Merck C; Meucci M; Meyer M; Miranda JM; Mirzoyan R; Mizobuchi S; Moles M; Moralejo A; Nieto D; Nilsson K; Ninkovic J; Ona-Wilhelmi E; Otte N; Oya I; Panniello M; Paoletti R; Paredes JM; Pasanen M; Pascoli D; Pauss F; Pegna R; Perez-Torres MA; Persic M; Peruzzo L; Piccioli A; Prada F; Prandini E; Puchades N; Raymers A; Rhode W; Ribo M; Rico J; Rissi M; Robert A; Rugamer S; Saggion A; Saito TY; Sanchez A; Sanchez-Conde M; Sartori P; Scalzotto V; Scapin V; Schmitt R; Schweizer T; Shayduk M; Shinozaki K; Shore SN; Sidro N; Sillanpaa A; Sobczynska D; Spanier F; Stamerra A; Stark LS; Takalo L; Temnikov P; Tescaro D; Teshima M; Torres DF; Turini N; Vankov H; Venturini A; Vitale V; Wagner RM; Wittek W; Zandanel F; Zanin R; Zapatero J. - In: THE ASTROPHYSICAL JOURNAL. - ISSN 0004-637X. - 679:1(2008), pp. 428-431.
| Titolo: | Upper limit for gamma-ray emission above 140 GeV from the dwarf spheroidal galaxy Draco |
| Autori: | |
| Data di pubblicazione: | 2008 |
| Rivista: | |
| Citazione: | Upper limit for gamma-ray emission above 140 GeV from the dwarf spheroidal galaxy Draco / Albert J; Aliu E; Anderhub H; Antoranz P; Backes M; Baixeras C; Barrio JA; Bartko H; Bastieri D; Becker JK; Bednarek W; Berger K; Bigongiari C; Biland A; Bock RK; Bordas P; Bosch-Ramon V; Bretz T; Britvitch I; Camara M; Carmona E; Chilingarian A; Commichau S; Contreras JL; Cortina J; Costado MT; Curtef V; Danielyan V; Dazzi F; De Angelis A; Delgado C; de los Reyes R; De Lotto B; De Maria M; De Sabata F; Dorner D; Doro M; Errando M; Fagiolini M; Ferenc D; Fernandez E; Firpo R; Fonseca MV; Font L; Fuchs M; Galante N; Garcia-Lopez RJ; Garczarczyk M; Gaug M; Goebel F; Hakobyan D; Hayashida M; Hengstebeck T; Herrero A; Hohne D; Hose J; Huber S; Hsu CC; Jacon P; Jogler T; Kosyra R; Kranich D; Laille A; Lindfors E; Lombardi S; Longo F; Lopez M; Lorenz E; Majumdar P; Maneva G; Mankuzhiyil N; Mannheim K; Mariotti M; Martinez M; Mazin D; Merck C; Meucci M; Meyer M; Miranda JM; Mirzoyan R; Mizobuchi S; Moles M; Moralejo A; Nieto D; Nilsson K; Ninkovic J; Ona-Wilhelmi E; Otte N; Oya I; Panniello M; Paoletti R; Paredes JM; Pasanen M; Pascoli D; Pauss F; Pegna R; Perez-Torres MA; Persic M; Peruzzo L; Piccioli A; Prada F; Prandini E; Puchades N; Raymers A; Rhode W; Ribo M; Rico J; Rissi M; Robert A; Rugamer S; Saggion A; Saito TY; Sanchez A; Sanchez-Conde M; Sartori P; Scalzotto V; Scapin V; Schmitt R; Schweizer T; Shayduk M; Shinozaki K; Shore SN; Sidro N; Sillanpaa A; Sobczynska D; Spanier F; Stamerra A; Stark LS; Takalo L; Temnikov P; Tescaro D; Teshima M; Torres DF; Turini N; Vankov H; Venturini A; Vitale V; Wagner RM; Wittek W; Zandanel F; Zanin R; Zapatero J. - In: THE ASTROPHYSICAL JOURNAL. - ISSN 0004-637X. - 679:1(2008), pp. 428-431. |
| Abstract: | The nearby dwarf spheroidal galaxy Draco, with its high mass to light ratio, is one of the most auspicious targets for indirect dark matter (DM) searches. Annihilation of hypothetical DM particles can result in high-energy gamma-rays, e. g., from neutralino annihilation in the supersymmetric framework. A search for a possible DM signal originating from Draco was performed with the MAGIC telescope during 2007. Analysis of the data results in a flux upper limit (2 sigma) of 1.1 x 10(-11) photons cm(-2) s(-1) for photon energies above 140 GeV, assuming a pointlike source. A comparison with predictions from supersymmetric models is also given. While our results do not constrain the mSUGRA phase parameter space, a very high flux enhancement can be ruled out. |
| Handle: | http://hdl.handle.net/11390/879299 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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