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Pregled bibliografske jedinice broj: 1105019

Detection of the Geminga pulsar with MAGIC hints at a power-law tail emission beyond 15 GeV


(MAGIC Collaboration) MAGIC Collaboration; Acciari, V. A.; Ansoldi, S.; Antonelli, L. A.; Arbet Engels, A.; Asano, K.; Baack, D.; Babić, A.; Baquero, A.; Barres de Almeida, U. et al.
Detection of the Geminga pulsar with MAGIC hints at a power-law tail emission beyond 15 GeV // Astronomy & astrophysics (Berlin), 643 (2020), L14, 6 doi:10.1051/0004-6361/202039131 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 1105019 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Detection of the Geminga pulsar with MAGIC hints at a power-law tail emission beyond 15 GeV

Autori
MAGIC Collaboration ; Acciari, V. A. ; Ansoldi, S. ; Antonelli, L. A. ; Arbet Engels, A. ; Asano, K. ; Baack, D. ; Babić, A. ; Baquero, A. ; Barres de Almeida, U. ; Barrio, J. A. ; Becerra González, J. ; Bednarek, W. ; Bellizzi, L. ; Bernardini, E. ; Bernardos, M. ; Berti, A. ; Besenrieder, J. ; Bhattacharyya, W. ; Bigongiari, C. ; Biland, A. ; Blanch, O. ; Bonnoli, G. ; Bošnjak, Ž. ; Busetto, G. ; Carosi, R. ; Ceribella, G. ; Cerruti, M. ; Chai, Y. ; Chilingarian, A. ; Cikota, S. ; Colak, S. M. ; Colombo, E. ; Contreras, J. L. ; Cortina, J. ; Covino, S. ; D’Amico, G. ; D’Elia, V. ; Da Vela, P. ; Dazzi, F. ; De Angelis, A. ; De Lotto, B. ; Delfino, M. ; Delgado, J. ; Delgado Mendez, C. ; Depaoli, D. ; Di Girolamo, T. ; Di Pierro, F. ; Di Venere, L. ; Do Souto Espiñeira, E. ; Dominis Prester, D. ; Donini, A. ; Dorner, D. ; Doro, M. ; Elsaesser, D. ; Fallah Ramazani, V. ; Fattorini, A. ; Ferrara, G. ; Foffano, L. ; Fonseca, M. V. ; Font, L. ; Fruck, C. ; Fukami, S. ; García López, R. J. ; Garczarczyk, M. ; Gasparyan, S. ; Gaug, M. ; Giglietto, N. ; Giordano, F. ; Gliwny, P. ; Godinović, N. ; Green, J. G. ; Green, D. ; Hadasch, D. ; Hahn, A. ; Heckmann, L. ; Herrera, J. ; Hoang, J. ; Hrupec, D. ; Hütten, M. ; Inada, T. ; Inoue, S. ; Ishio, K. ; Iwamura, Y. ; Jormanainen, J. ; Jouvin, L. ; Kajiwara, Y. ; Karjalainen, M. ; Kerszberg, D. ; Kobayashi, Y. ; Kubo, H. ; Kushida, J. ; Lamastra, A. ; Lelas, D. ; Leone, F. ; Lindfors, E. ; Lombardi, S. ; Longo, F. ; López-Coto, R. ; López- Moya, M. ; López-Oramas, A. ; Loporchio, S. ; 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. ; Mazin, D. ; Mender, S. ; Mićanović, S. ; Miceli, D. ; Miener, T. ; Minev, M. ; Miranda, J. M. ; Mirzoyan, R. ; Molina, E. ; Moralejo, A. ; Morcuende, D. ; Moreno, V. ; Moretti, E. ; Munar- Adrover, P. ; Neustroev, V. ; Nigro, C. ; Nilsson, K. ; Ninci, D. ; Nishijima, K. ; Noda, K. ; Nozaki, S. ; Ohtani, Y. ; Oka, T. ; Otero-Santos, J. ; Palatiello, M. ; Paneque, D. ; Paoletti, R. ; Paredes, J. M. ; Pavletić, L. ; Peñil, P. ; Perennes, C. ; Persic, M. ; Prada Moroni, P. G. ; Prandini, E. ; Priyadarshi, C. ; Puljak, I. ; Rhode, W. ; Ribó, M. ; Rico, J. ; Righi, C. ; Rugliancich, A. ; Saha, L. ; Sahakyan, N. ; Saito, T. ; Sakurai, S. ; Satalecka, K. ; Saturni, F. G. ; Schleicher, B. ; Schmidt, K. ; Schweizer, T. ; Sitarek, J. ; Šnidarić, I. ; Sobczynska, D. ; Spolon, A. ; Stamerra, A. ; Strom, D. ; Strzys, M. ; Suda, Y. ; Surić, T. ; Takahashi, M. ; Tavecchio, F. ; Temnikov, P. ; Terzić, T. ; Teshima, M. ; Torres- Albà, N. ; Tosti, L. ; Truzzi, S. ; Tutone, A. ; van Scherpenberg, J. ; Vanzo, G. ; Vazquez Acosta, M. ; Ventura, S. ; Verguilov, V. ; Vigorito, C. F. ; Vitale, V. ; Vovk, I. ; Will, M. ; Zarić, D. ; Hirotani, K. ; Saz Parkinson, P. M.

Kolaboracija
MAGIC Collaboration

Izvornik
Astronomy & astrophysics (Berlin) (0004-6361) 643 (2020); L14, 6

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
gamma rays: stars ; pulsars: general ; pulsars: individual: PSR J0633+1746 ; pulsars: individual: Geminga

Sažetak
We report the detection of pulsed gamma-ray emission from the Geminga pulsar (PSR J0633+1746) between 15 GeV and 75 GeV. This is the first time a middle-aged pulsar has been detected up to these energies. Observations were carried out with the MAGIC telescopes between 2017 and 2019 using the low-energy threshold Sum-Trigger-II system. After quality selection cuts, similar to 80 h of observational data were used for this analysis. To compare with the emission at lower energies below the sensitivity range of MAGIC, 11 years of Fermi-LAT data above 100 MeV were also analysed. From the two pulses per rotation seen by Fermi-LAT, only the second one, P2, is detected in the MAGIC energy range, with a significance of 6.3 sigma. The spectrum measured by MAGIC is well-represented by a simple power law of spectral index Gamma =5.62 +/- 0.54, which smoothly extends the Fermi-LAT spectrum. A joint fit to MAGIC and Fermi-LAT data rules out the existence of a sub- exponential cut-off in the combined energy range at the 3.6 sigma significance level. The power-law tail emission detected by MAGIC is interpreted as the transition from curvature radiation to Inverse Compton Scattering of particles accelerated in the northern outer gap.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekti:
HRZZ-IP-2016-06-9782 - Visokoenergijska astronomija gama-zraka teleskopima MAGIC i CTA (MAGIC-CTA) (Godinović, Nikola, HRZZ - 2016-06) ( POIROT)

Ustanove:
Fakultet elektrotehnike, strojarstva i brodogradnje, Split,
Fakultet elektrotehnike i računarstva, Zagreb,
Institut "Ruđer Bošković", Zagreb,
Sveučilište u Osijeku - Odjel za fiziku,
Sveučilište u Rijeci - Odjel za fiziku

Citiraj ovu publikaciju

(MAGIC Collaboration) MAGIC Collaboration; Acciari, V. A.; Ansoldi, S.; Antonelli, L. A.; Arbet Engels, A.; Asano, K.; Baack, D.; Babić, A.; Baquero, A.; Barres de Almeida, U. et al.
Detection of the Geminga pulsar with MAGIC hints at a power-law tail emission beyond 15 GeV // Astronomy & astrophysics (Berlin), 643 (2020), L14, 6 doi:10.1051/0004-6361/202039131 (međunarodna recenzija, članak, znanstveni)
(MAGIC Collaboration) (MAGIC Collaboration) MAGIC Collaboration, Acciari, V., Ansoldi, S., Antonelli, L., Arbet Engels, A., Asano, K., Baack, D., Babić, A., Baquero, A. & Barres de Almeida, U. (2020) Detection of the Geminga pulsar with MAGIC hints at a power-law tail emission beyond 15 GeV. Astronomy & astrophysics (Berlin), 643, L14, 6 doi:10.1051/0004-6361/202039131.
@article{article, year = {2020}, pages = {6}, DOI = {10.1051/0004-6361/202039131}, chapter = {L14}, keywords = {gamma rays: stars, pulsars: general, pulsars: individual: PSR J0633+1746, pulsars: individual: Geminga}, journal = {Astronomy and astrophysics (Berlin)}, doi = {10.1051/0004-6361/202039131}, volume = {643}, issn = {0004-6361}, title = {Detection of the Geminga pulsar with MAGIC hints at a power-law tail emission beyond 15 GeV}, keyword = {gamma rays: stars, pulsars: general, pulsars: individual: PSR J0633+1746, pulsars: individual: Geminga}, chapternumber = {L14} }
@article{article, year = {2020}, pages = {6}, DOI = {10.1051/0004-6361/202039131}, chapter = {L14}, keywords = {gamma rays: stars, pulsars: general, pulsars: individual: PSR J0633+1746, pulsars: individual: Geminga}, journal = {Astronomy and astrophysics (Berlin)}, doi = {10.1051/0004-6361/202039131}, volume = {643}, issn = {0004-6361}, title = {Detection of the Geminga pulsar with MAGIC hints at a power-law tail emission beyond 15 GeV}, keyword = {gamma rays: stars, pulsars: general, pulsars: individual: PSR J0633+1746, pulsars: individual: Geminga}, chapternumber = {L14} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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