A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Indirect dark matter searches in the dwarf satellite galaxy Ursa Major II with the MAGIC telescopes
Tekijät: M.L. Ahnen, S. Ansoldi, L.A. Antonelli, C. Arcaro, D. Baack, A. Babić, B. Banerjee, P. Bangale, U. Barres de Almeida, J.A. Barrio, J. Becerra González, W. Bednarek, E. Bernardini, R.Ch. Berse, A. Berti, W. Bhattacharyya, A. Biland, O. Blanch, G. Bonnoli, R. Carosi, A. Carosi, G. Ceribella, A. Chatterjee, S.M. Colak, P. Colin, E. Colombo, J.L. Contreras, J. Cortina, S. Covino, P. Cumani, P. Da Vela, F. Dazzi, A. De Angelis, B. De Lotto, M. Delfino, J. Delgado, F. Di Pierro, A. Domínguez, D. Dominis Prester, D. Dorner, M. Doro, S. Einecke, D. Elsaesser, V. Fallah Ramazani, A. Fernández-Barral, D. Fidalgo, M.V. Fonseca, L. Font, C. Fruck, D. Galindo, R.J. García López, M. Garczarczyk, M. Gaug, P. Giammaria, N. Godinović, D. Gora, D. Guberman, D. Hadasch, A. Hahn, T. Hassan, M. Hayashida, J. Herrera, J. Hose, D. Hrupec, K. Ishio, Y. Konno, H. Kubo, J. Kushida, D. Kuveždić, D. Lelas, E. Lindfors, S. Lombardi, F. Longo, M. López, C. Maggio, P. Majumdar, M. Makariev, G. Maneva, M. Manganaro, K. Mannheim, L. Maraschi, M. Mariotti, M. Martínez, S. Masuda, D. Mazin, K. Mielke, M. Minev, J.M. Miranda, R. Mirzoyan, A. Moralejo, V. Moreno, E. Moretti, T. Nagayoshi, V. Neustroev, A. Niedzwiecki, M. Nievas Rosillo, C. Nigro, K. Nilsson, D. Ninci, K. Nishijima, K. Noda, L. Nogués, S. Paiano, J. Palacio, D. Paneque, R. Paoletti, J.M. Paredes, G. Pedaletti, M. Peresano, M. Persic, P.G. Prada Moroni, E. Prandini, I. Puljak, J.R. Garcia, I. Reichardt, W. Rhode, M. Ribó, J. Rico, C. Righi, A. Rugliancich, T. Saito, K. Satalecka, T. Schweizer, J. Sitarek, I. Šnidarić, D. Sobczynska, A. Stamerra, M. Strzys, T. Surić, M. Takahashi, L. Takalo, F. Tavecchio, P. Temnikov, T. Terzić, M. Teshima, N. Torres-Albà, A. Treves, S. Tsujimoto, G. Vanzo, M. Vazquez Acosta, I. Vovk, J.E. Ward, M. Will, D. Zarić
Kustantaja: IOP PUBLISHING LTD
Julkaisuvuosi: 2018
Journal: Journal of Cosmology and Astroparticle Physics
Tietokannassa oleva lehden nimi: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Lehden akronyymi: J COSMOL ASTROPART P
Artikkelin numero: ARTN 009
Numero: 3
Sivujen määrä: 21
ISSN: 1475-7516
eISSN: 1475-7516
DOI: https://doi.org/10.1088/1475-7516/2018/03/009
The dwarf spheroidal galaxy Ursa Major II (UMaII) is believed to be one of the most dark-matter dominated systems among the Milky Way satellites and represents a suitable target for indirect dark matter (DM) searches. The MAGIC telescopes carried out a deep observation campaign on UMaII between 2014 and 2016, collecting almost one hundred hours of good-quality data. This campaign enlarges the pool of DM targets observed at very high energy (E greater than or similar to 50 GeV) in search for signatures of DM annihilation in the wide mass range between similar to 100 GeV and similar to 100TeV. To this end, the data are analyzed with the full likelihood analysis, a method based on the exploitation of the spectral information of the recorded events for an optimal sensitivity to the explored DM models. We obtain constraints on the annihilation cross-section for different channels that are among the most robust and stringent achieved so far at the TeV mass scale from observations of dwarf satellite galaxies.
