Discovery of TeV γ-ray emission from the neighbourhood of the supernova remnant G24.7+0.6 by MAGIC
Acciari, V. A.; Ansoldi, S.; Antonelli, L. A.; Engels, A. Arbet; Arcaro, C.; Baack, D.; Babic, A.; Banerjee, B.; Bangale, P.; de Almeida, U. Barres; Barrio, J. A.; Becerra Gonzalez, J.; Bednarek, W.; Bernardini, E.; Berti, A.; Besenrieder, J.; Bhattacharyya, W.; Bigongiari, C.; Biland, A.; Blanch, O.; Bonnoli, G.; Carosi, R.; Ceribella, G.; Chatterjee, A.; Colak, S. M.; Colin, P.; Colombo, E.; Contreras, J. L.; Cortina, J.; Covino, S.; Cumani, P.; D'Elia, V.; Da Vela, P.; Dazzi, F.; De Angelis, A.; De Lotto, B.; Delfino, M.; Delgado, J.; Di Pierro, F.; Dominguez, A.; Prester, D. Dominis; Dorner, D.; Doro, M.; Einecke, S.; Elsaesser, D.; Ramazani, V. Fallah; Fattorini, A.; Fernandez-Barral, A.; Ferrara, G.; Fidalgo, D.; Foffano, L.; Fonseca, M. V.; Font, L.; Fruck, C.; Galindo, D.; Gallozzi, S.; Garcia Lopez, R. J.; Garczarczyk, M.; Gaug, M.; Giammaria, P.; Godinovic, N.; Guberman, D.; Hadasch, D.; Hahn, A.; Hassan, T.; Herrera, J.; Hoang, J.; Hrupec, D.; Inoue, S.; Ishio, K.; Iwamura, Y.; Kubo, H.; Kushida, J.; Kuvezdic, D.; Lamastra, A.; Lelas, D.; Leone, F.; Lindfors, E.; Lombardi, S.; Longo, F.; Lopez, M.; Lopez-Oramas, A.; Maggio, C.; Majumdar, P.; Makariev, M.; Maneva, G.; Manganaro, M.; Mannheim, K.; Maraschi, L.; Mariotti, M.; Martinez, M.; Masuda, S.; Mazin, D.; Minev, M.; Miranda, J. M.; Mirzoyan, R.; Molina, E.; Moralejo, A.; Moreno, V.; Moretti, E.; Neustroev, V.; Niedzwiecki, A.; Nievas Rosillo, M.; Nigro, C.; Nilsson, K.; Ninci, D.; Nishijima, K.; Noda, K.; Nogues, L.; Paiano, S.; Palacio, J.; Paneque, D.; Paoletti, R.; Paredes, J. M.; Pedaletti, G.; Penil, P.; Peresano, M.; Persic, M.; Moroni, P. G. Prada; Prandini, E.; Puljak, I.; Garcia, J. R.; Rhode, W.; Ribo, M.; Rico, J.; Righi, C.; Rugliancich, A.; Saha, L.; Saito, T.; Satalecka, K.; Schweizer, T.; Sitarek, J.; Snidaric, I.; Sobczynska, D.; Somero, A.; Stamerra, A.; Strzys, M.; Suric, T.; Tavecchio, F.; Temnikov, P.; Terzic, T.; Teshima, M.; Torres-Alba, N.; Tsujimoto, S.; Vanzo, G.; Vazquez Acosta, M.; Vovk, I.; Ward, J. E.; Will, M.; Zaric, D.; de Ona Wilhelmi, E.; Torres, D. F.; Zanin, R. (2018-12-14)
MAGIC Collaboration, V A Acciari, S Ansoldi, L A Antonelli, A Arbet Engels, C Arcaro, D Baack, A Babić, B Banerjee, P Bangale, U Barres de Almeida, J A Barrio, J Becerra González, W Bednarek, E Bernardini, A Berti, J Besenrieder, W Bhattacharyya, C Bigongiari, A Biland, O Blanch, G Bonnoli, R Carosi, G Ceribella, A Chatterjee, S M Colak, P Colin, E Colombo, J L Contreras, J Cortina, S Covino, P Cumani, V D’Elia, 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 Fattorini, A Fernández-Barral, G Ferrara, D Fidalgo, L Foffano, M V Fonseca, L Font, C Fruck, D Galindo, S Gallozzi, R J García López, M Garczarczyk, M Gaug, P Giammaria, N Godinović, D Guberman, D Hadasch, A Hahn, T Hassan, J Herrera, J Hoang, D Hrupec, S Inoue, K Ishio, Y Iwamura, H Kubo, J Kushida, D Kuveždić, A Lamastra, D Lelas, F Leone, E Lindfors, S Lombardi, F Longo, M López, A López-Oramas, C Maggio, P Majumdar, M Makariev, G Maneva, M Manganaro, K Mannheim, L Maraschi, M Mariotti, M Martínez, S Masuda, D Mazin, M Minev, J M Miranda, R Mirzoyan, E Molina, A Moralejo, V Moreno, E Moretti, 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, P Peñil, M Peresano, M Persic, P G Prada Moroni, E Prandini, I Puljak, J R Garcia, W Rhode, M Ribó, J Rico, C Righi, A Rugliancich, L Saha, T Saito, K Satalecka, T Schweizer, J Sitarek, I Šnidarić, D Sobczynska, A Somero, A Stamerra, M Strzys, T Surić, F Tavecchio, P Temnikov, T Terzić, M Teshima, N Torres-Albà, S Tsujimoto, G Vanzo, M Vazquez Acosta, I Vovk, J E Ward, M Will, D Zarić, E de Oña Wilhelmi, D F Torres, R Zanin, Discovery of TeV γ-ray emission from the neighbourhood of the supernova remnant G24.7+0.6 by MAGIC, Monthly Notices of the Royal Astronomical Society, Volume 483, Issue 4, March 2019, Pages 4578–4585, https://doi.org/10.1093/mnras/sty3387
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society. © 2018 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
https://rightsstatements.org/vocab/InC/1.0/
https://urn.fi/URN:NBN:fi-fe2019102935499
Tiivistelmä
Abstract
SNR G24.7+0.6 is a 9.5 kyrs radio and γ-ray supernova remnant evolving in a dense medium. In the GeV regime, SNR G24.7+0.6 (3FHL J1834.1–0706e/FGES J1834.1–0706) shows a hard spectral index (Γ ∼ 2) up to 200 GeV, which makes it a good candidate to be observed with Cherenkov telescopes such as MAGIC. We observed the field of view of SNR G24.7+0.6 with the MAGIC telescopes for a total of 31 h. We detect very high-energy γ-ray emission from an extended source located 0.34° away from the centre of the radio SNR. The new source, named MAGIC J1835–069 is detected up to 5 TeV, and its spectrum is well-represented by a power-law function with spectral index of 2.74 ± 0.08. The complexity of the region makes the identification of the origin of the very high-energy emission difficult; however, the spectral agreement with the LAT source and overlapping position at less than 1.5σ point to a common origin. We analysed 8 yr of Fermi-LAT data to extend the spectrum of the source down to 60 MeV. Fermi-LAT and MAGIC spectra overlap within errors and the global broad-band spectrum is described by a power law with exponential cut-off at 1.9 ± 0.5 TeV. The detected γ-ray emission can be interpreted as the results of proton–proton interaction between the supernova and the CO-rich surrounding.
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