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

TitleDetection of the Geminga pulsar with MAGIC hints at a power-law tail emission beyond 15 GeV
Authors
Acciari, VAAnsoldi, SAntonelli, LAArbet Engels, AAsano, KBaack, DBabić, ABaquero, ABarres de Almeida, UBarrio, JABecerra González, JVanzo, GVazquez Acosta, MVentura, SVerguilov, VVigorito, CFVitale, VVovk, IWill, MZarić, DBiland, ALoporchio, SHirotani, KSaz Parkinson, PMBlanch, OBonnoli, GBošnjak, ŽBusetto, GCarosi, RCeribella, GCerruti, MChai, YMachado de Oliveira Fraga, BChilingarian, ACikota, SColak, SMColombo, EContreras, JLCortina, JCovino, SD’Amico, GD’Elia, VDa Vela, PMaggio, CDazzi, FDe Angelis, ADe Lotto, BDelfino, MDelgado, JDelgado Mendez, CDepaoli, DDi Girolamo, TDi Pierro, FDi Venere, LMajumdar, PDo Souto Espiñeira, EDominis Prester, DDonini, ADorner, DDoro, MElsaesser, DFallah Ramazani, VFattorini, AFerrara, GFoffano, LMakariev, MFonseca, MVFont, LFruck, CFukami, SGarcía López, RJGarczarczyk, MGasparyan, SGaug, MGiglietto, NGiordano, FMallamaci, MGliwny, PGodinović, NGreen, JGGreen, DHadasch, DHahn, AHeckmann, LHerrera, JHoang, JHrupec, DManeva, GHütten, MInada, TInoue, SIshio, KIwamura, YJormanainen, JJouvin, LKajiwara, YKarjalainen, MKerszberg, DManganaro, MKobayashi, YKubo, HKushida, JLamastra, ALelas, DLeone, FLindfors, ELombardi, SLongo, FLópez-Coto, RMannheim, KLópez-Moya, MLópez-Oramas, AMaraschi, LBednarek, WMariotti, MMartínez, MMazin, DMender, SMićanović, SMiceli, DMiener, TMinev, MMiranda, JMMirzoyan, RBellizzi, LMolina, EMoralejo, AMorcuende, DMoreno, VMoretti, EMunar-Adrover, PNeustroev, VNigro, CNilsson, KNinci, DBernardini, ENishijima, KNoda, KNozaki, SOhtani, YOka, TOtero-Santos, JPalatiello, MPaneque, DPaoletti, RParedes, JMBernardos, MPavletić, LPeñil, PPerennes, CPersic, MPrada Moroni, PGPrandini, EPriyadarshi, CPuljak, IRhode, WRibó, MBerti, ARico, JRighi, CRugliancich, ASaha, LSahakyan, NSaito, TSakurai, SSatalecka, KSaturni, FGSchleicher, BBesenrieder, JSchmidt, KSchweizer, TSitarek, JŠnidarić, ISobczynska, DSpolon, AStamerra, AStrom, DStrzys, MSuda, YBhattacharyya, WSurić, TTakahashi, MTavecchio, FTemnikov, PTerzić, TTeshima, MTorres-Albà, NTosti, LTruzzi, STutone, ABigongiari, Cvan Scherpenberg, J
KeywordsGamma rays: stars
Pulsars: general
Pulsars: individual: Geminga
Pulsars: individual: PSR J0633+1746
Issue Date2020
PublisherEDP Sciences. The Journal's web site is located at http://www.aanda.org
Citation
Astronomy & Astrophysics, 2020, v. 643, p. article no. L14 How to Cite?
AbstractWe 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, ∼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 6.3σ. The spectrum measured by MAGIC is well-represented by a simple power law of spectral index Γ = 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 3.6σ 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.
Persistent Identifierhttp://hdl.handle.net/10722/295271
ISSN
2023 Impact Factor: 5.4
2023 SCImago Journal Rankings: 1.896
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorAcciari, VA-
dc.contributor.authorAnsoldi, S-
dc.contributor.authorAntonelli, LA-
dc.contributor.authorArbet Engels, A-
dc.contributor.authorAsano, K-
dc.contributor.authorBaack, D-
dc.contributor.authorBabić, A-
dc.contributor.authorBaquero, A-
dc.contributor.authorBarres de Almeida, U-
dc.contributor.authorBarrio, JA-
dc.contributor.authorBecerra González, J-
dc.contributor.authorVanzo, G-
dc.contributor.authorVazquez Acosta, M-
dc.contributor.authorVentura, S-
dc.contributor.authorVerguilov, V-
dc.contributor.authorVigorito, CF-
dc.contributor.authorVitale, V-
dc.contributor.authorVovk, I-
dc.contributor.authorWill, M-
dc.contributor.authorZarić, D-
dc.contributor.authorBiland, A-
dc.contributor.authorLoporchio, S-
dc.contributor.authorHirotani, K-
dc.contributor.authorSaz Parkinson, PM-
dc.contributor.authorBlanch, O-
dc.contributor.authorBonnoli, G-
dc.contributor.authorBošnjak, Ž-
dc.contributor.authorBusetto, G-
dc.contributor.authorCarosi, R-
dc.contributor.authorCeribella, G-
dc.contributor.authorCerruti, M-
dc.contributor.authorChai, Y-
dc.contributor.authorMachado de Oliveira Fraga, B-
dc.contributor.authorChilingarian, A-
dc.contributor.authorCikota, S-
dc.contributor.authorColak, SM-
dc.contributor.authorColombo, E-
dc.contributor.authorContreras, JL-
dc.contributor.authorCortina, J-
dc.contributor.authorCovino, S-
dc.contributor.authorD’Amico, G-
dc.contributor.authorD’Elia, V-
dc.contributor.authorDa Vela, P-
dc.contributor.authorMaggio, C-
dc.contributor.authorDazzi, F-
dc.contributor.authorDe Angelis, A-
dc.contributor.authorDe Lotto, B-
dc.contributor.authorDelfino, M-
dc.contributor.authorDelgado, J-
dc.contributor.authorDelgado Mendez, C-
dc.contributor.authorDepaoli, D-
dc.contributor.authorDi Girolamo, T-
dc.contributor.authorDi Pierro, F-
dc.contributor.authorDi Venere, L-
dc.contributor.authorMajumdar, P-
dc.contributor.authorDo Souto Espiñeira, E-
dc.contributor.authorDominis Prester, D-
dc.contributor.authorDonini, A-
dc.contributor.authorDorner, D-
dc.contributor.authorDoro, M-
dc.contributor.authorElsaesser, D-
dc.contributor.authorFallah Ramazani, V-
dc.contributor.authorFattorini, A-
dc.contributor.authorFerrara, G-
dc.contributor.authorFoffano, L-
dc.contributor.authorMakariev, M-
dc.contributor.authorFonseca, MV-
dc.contributor.authorFont, L-
dc.contributor.authorFruck, C-
dc.contributor.authorFukami, S-
dc.contributor.authorGarcía López, RJ-
dc.contributor.authorGarczarczyk, M-
dc.contributor.authorGasparyan, S-
dc.contributor.authorGaug, M-
dc.contributor.authorGiglietto, N-
dc.contributor.authorGiordano, F-
dc.contributor.authorMallamaci, M-
dc.contributor.authorGliwny, P-
dc.contributor.authorGodinović, N-
dc.contributor.authorGreen, JG-
dc.contributor.authorGreen, D-
dc.contributor.authorHadasch, D-
dc.contributor.authorHahn, A-
dc.contributor.authorHeckmann, L-
dc.contributor.authorHerrera, J-
dc.contributor.authorHoang, J-
dc.contributor.authorHrupec, D-
dc.contributor.authorManeva, G-
dc.contributor.authorHütten, M-
dc.contributor.authorInada, T-
dc.contributor.authorInoue, S-
dc.contributor.authorIshio, K-
dc.contributor.authorIwamura, Y-
dc.contributor.authorJormanainen, J-
dc.contributor.authorJouvin, L-
dc.contributor.authorKajiwara, Y-
dc.contributor.authorKarjalainen, M-
dc.contributor.authorKerszberg, D-
dc.contributor.authorManganaro, M-
dc.contributor.authorKobayashi, Y-
dc.contributor.authorKubo, H-
dc.contributor.authorKushida, J-
dc.contributor.authorLamastra, A-
dc.contributor.authorLelas, D-
dc.contributor.authorLeone, F-
dc.contributor.authorLindfors, E-
dc.contributor.authorLombardi, S-
dc.contributor.authorLongo, F-
dc.contributor.authorLópez-Coto, R-
dc.contributor.authorMannheim, K-
dc.contributor.authorLópez-Moya, M-
dc.contributor.authorLópez-Oramas, A-
dc.contributor.authorMaraschi, L-
dc.contributor.authorBednarek, W-
dc.contributor.authorMariotti, M-
dc.contributor.authorMartínez, M-
dc.contributor.authorMazin, D-
dc.contributor.authorMender, S-
dc.contributor.authorMićanović, S-
dc.contributor.authorMiceli, D-
dc.contributor.authorMiener, T-
dc.contributor.authorMinev, M-
dc.contributor.authorMiranda, JM-
dc.contributor.authorMirzoyan, R-
dc.contributor.authorBellizzi, L-
dc.contributor.authorMolina, E-
dc.contributor.authorMoralejo, A-
dc.contributor.authorMorcuende, D-
dc.contributor.authorMoreno, V-
dc.contributor.authorMoretti, E-
dc.contributor.authorMunar-Adrover, P-
dc.contributor.authorNeustroev, V-
dc.contributor.authorNigro, C-
dc.contributor.authorNilsson, K-
dc.contributor.authorNinci, D-
dc.contributor.authorBernardini, E-
dc.contributor.authorNishijima, K-
dc.contributor.authorNoda, K-
dc.contributor.authorNozaki, S-
dc.contributor.authorOhtani, Y-
dc.contributor.authorOka, T-
dc.contributor.authorOtero-Santos, J-
dc.contributor.authorPalatiello, M-
dc.contributor.authorPaneque, D-
dc.contributor.authorPaoletti, R-
dc.contributor.authorParedes, JM-
dc.contributor.authorBernardos, M-
dc.contributor.authorPavletić, L-
dc.contributor.authorPeñil, P-
dc.contributor.authorPerennes, C-
dc.contributor.authorPersic, M-
dc.contributor.authorPrada Moroni, PG-
dc.contributor.authorPrandini, E-
dc.contributor.authorPriyadarshi, C-
dc.contributor.authorPuljak, I-
dc.contributor.authorRhode, W-
dc.contributor.authorRibó, M-
dc.contributor.authorBerti, A-
dc.contributor.authorRico, J-
dc.contributor.authorRighi, C-
dc.contributor.authorRugliancich, A-
dc.contributor.authorSaha, L-
dc.contributor.authorSahakyan, N-
dc.contributor.authorSaito, T-
dc.contributor.authorSakurai, S-
dc.contributor.authorSatalecka, K-
dc.contributor.authorSaturni, FG-
dc.contributor.authorSchleicher, B-
dc.contributor.authorBesenrieder, J-
dc.contributor.authorSchmidt, K-
dc.contributor.authorSchweizer, T-
dc.contributor.authorSitarek, J-
dc.contributor.authorŠnidarić, I-
dc.contributor.authorSobczynska, D-
dc.contributor.authorSpolon, A-
dc.contributor.authorStamerra, A-
dc.contributor.authorStrom, D-
dc.contributor.authorStrzys, M-
dc.contributor.authorSuda, Y-
dc.contributor.authorBhattacharyya, W-
dc.contributor.authorSurić, T-
dc.contributor.authorTakahashi, M-
dc.contributor.authorTavecchio, F-
dc.contributor.authorTemnikov, P-
dc.contributor.authorTerzić, T-
dc.contributor.authorTeshima, M-
dc.contributor.authorTorres-Albà, N-
dc.contributor.authorTosti, L-
dc.contributor.authorTruzzi, S-
dc.contributor.authorTutone, A-
dc.contributor.authorBigongiari, C-
dc.contributor.authorvan Scherpenberg, J-
dc.date.accessioned2021-01-11T13:57:45Z-
dc.date.available2021-01-11T13:57:45Z-
dc.date.issued2020-
dc.identifier.citationAstronomy & Astrophysics, 2020, v. 643, p. article no. L14-
dc.identifier.issn0004-6361-
dc.identifier.urihttp://hdl.handle.net/10722/295271-
dc.description.abstractWe 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, ∼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 6.3σ. The spectrum measured by MAGIC is well-represented by a simple power law of spectral index Γ = 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 3.6σ 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.-
dc.languageeng-
dc.publisherEDP Sciences. The Journal's web site is located at http://www.aanda.org-
dc.relation.ispartofAstronomy & Astrophysics-
dc.subjectGamma rays: stars-
dc.subjectPulsars: general-
dc.subjectPulsars: individual: Geminga-
dc.subjectPulsars: individual: PSR J0633+1746-
dc.titleDetection of the Geminga pulsar with MAGIC hints at a power-law tail emission beyond 15 GeV-
dc.typeArticle-
dc.identifier.emailSaz Parkinson, PM: pablosp@hku.hk-
dc.identifier.authoritySaz Parkinson, PM=rp01803-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1051/0004-6361/202039131-
dc.identifier.scopuseid_2-s2.0-85096799037-
dc.identifier.hkuros320820-
dc.identifier.volume643-
dc.identifier.spagearticle no. L14-
dc.identifier.epagearticle no. L14-
dc.identifier.isiWOS:000595643800001-
dc.publisher.placeFrance-

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