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Deep observations of the globular cluster M15 with the MAGIC telescopes

Authors :
Acciari, V. A.
Ansoldi, S.
Antonelli, L. A.
Arbet Engels, A.
Baack, D.
Babić, A.
Banerjee, B.
Barres De Almeida, U.
Barrio, J. A.
Becerra González, J.
Bednarek, W.
Bernardini, E.
Berti, A.
Besenrieder, J.
Bhattacharyya, W.
Bigongiari, C.
Biland, A.
Blanch, O.
Bonnoli, G.
Busetto, G.
Carosi, R.
Ceribella, G.
Cikota, S.
Colak, S. M.
Colin, P.
Colombo, E.
Contreras, J. L.
Cortina, J.
Covino, S.
D’Elia, V.
Da Vela, P.
Dazzi, F.
De Angelis, A.
De Lotto, B.
Delfino, M.
Delgado, J.
Di Pierro, F.
Do Souto Espiñera, E.
Domínguez, A.
Dominis Prester, D.
Dorner, D.
Doro, M.
Einecke, S.
Elsaesser, D.
Fallah Ramazani, V.
Fattorini, A.
Fernández-Barral, A.
Ferrara, G.
Fidalgo, D.
Foffano, L.
Fonseca, M. V.
Font, L.
Fruck, C.
Galindo, D.
Gallozzi, S.
García López, R. J.
Garczarczyk, M.
Gasparyan, S.
Gaug, M.
Giammaria, P.
Godinović, N.
Green, D.
Guberman, D.
Hadasch, D.
Hahn, A.
Herrera, J.
Hoang, J.
Hrupec, D.
Inoue, S.
Ishio, K.
Iwamura, Y.
Kubo, H.
Kushida, J.
Kuveždić, D.
Lamastra, A.
Lelas, D.
Leone, F.
Lindfors, E.
Lombardi, S.
Longo, F.
López, M.
López-Oramas, A.
Machado De Oliveira Fraga, B.
Maggio, C.
Majumdar, P.
Makariev, M.
Mallamaci, M.
Maneva, G.
Manganaro, M.
Mannheim, K.
Maraschi, L.
Mariotti, M.
Martínez, M.
Masuda, S.
Mazin, D.
Minev, M.
Miranda, J. M.
Mirzoyan, R.
Molina, E.
Moralejo, A.
Moreno, V.
Moretti, E.
Munar-Adrover, P.
Neustroev, V.
Niedzwiecki, A.
Nievas Rosillo, M.
Nigro, C.
Nilsson, K.
Ninci, D.
Nishijima, K.
Noda, K.
Nogués, L.
Nöthe, M.
Paiano, S.
Palacio, J.
Paneque, D.
Paoletti, R.
Paredes, J. M.
Pedaletti, G.
Peñil, P.
Peresano, M.
Persic, M.
Prada Moroni, P. G.
Prandini, E.
Puljak, I.
Garcia, J. R.
Rhode, W.
Ribó, M.
Rico, J.
Righi, C.
Rugliancich, A.
Saha, L.
Sahakyan, N.
Saito, T.
Satalecka, K.
Schweizer, T.
Sitarek, J.
Šnidarić, I.
Sobczynska, D.
Somero, A.
Stamerra, A.
Strzys, M.
Surić, T.
Tavecchio, F.
Temnikov, P.
Terzić, T.
Teshima, M.
Torres-Albà, N.
Tsujimoto, S.
Van Scherpenberg, J.
Vanzo, G.
Vazquez Acosta, M.
Vovk, I.
Will, M.
Zarić, D.
Publisher :
Deutsches Elektronen-Synchrotron, DESY, Hamburg

Abstract

Monthly notices of the Royal Astronomical Society 484(2), 2876 - 2885 (2019). doi:10.1093/mnras/stz179<br />A population of globular clusters (GCs) has been recently established by the Fermi-LAT telescope as a new class of GeV γ-ray sources. Leptons accelerated to TeV energies, in the inner magnetospheres of MSPs or in their wind regions, should produce γ-rays through the inverse Compton scattering in the dense radiation field from the huge population of stars. We have conducted deep observations of the GC M15 with the MAGIC telescopes and used 165 h in order to search for γ-ray emission. A strong upper limit on the TeV γ-ray flux $< 3.2 × 10^{−13}cm^{−2}s^{−1}$ above 300 GeV (⁠<br />Published by Oxford Univ. Press, Oxford

Subjects

Subjects :
7. Clean energy

Details

Language :
English
Database :
OpenAIRE
Accession number :
edsair.doi...........13d02b98361e6f754b29afa704835e37

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