Evidence for $\gamma$-ray emission from the remnant of Kepler’s supernova based on deep H.E.S.S. observations

Aharonian, F.; White, R.; Boisson, C.; Zhu, Sylvia Jiechen; H. E. S. S. Collaboration; Rowell, G.; Moulin, E.; Nayerhoda, A.; Unbehaun, T.; Kluzniak, W.; Rieger, F.; Khelifi, B.; Benkhali, F. Ait; Devin, J.; Simoni, R.; Shapopi, J. N. S.; Lemoine-Goumard, M.; Marx, R.; Bolmont, J.; Montanari, A.; Berge, D.; Einecke, S.; Schussler, F.; Lohse, T.; Martins, V. Barbosa; Schwanke, U.; Wong, Yu Wun; Grondin, M.-H.; Kostunin, D.; Meintjes, P. J.; Cristofari, P.; O'Brien, P.; Sanchez, D. A.; Chibueze, O.; Reichherzer, P.; Sushch, I.; Holler, M.; Backes, M.; Uchiyama, Y.; Steppa, C.; Punch, M.; Bernloehr, K.; Holch, Tim Lukas; Glawion, D.; Prokhorov, D. A.; Poireau, V.; Santangelo, A.; Peron, G.; Wagner, S. J.; Egberts, K.; Ghafourizadeh, S.; Yusafzai, A.; Marchegiani, P.; Marcowith, A.; Steinmassl, S.; Zywucka, N.; Chand, T.; Bulik, T.; Cotter, G.; Nakashima, K.; Rudak, B.; Katz, U.; Meyer, M.; Kasai, E.; Brose, R.; Lemiere, A.; Reimer, O.; Quirrenbach, A.; Takahashi, T.; Fontaine, G.; Sol, H.; Giunti, L.; Noel, A. Priyana; Tsirou, M.; Schutte, H. M.; Terrier, R.; Veh, J.; Katarzynski, K.; Funk, S.; Mbarubucyeye, Jean Damascene; Reimer, A.; Olivera-Nieto, L.; Jung-Richardt, I.; Feijen, K.; Salzmann, H.; Dmytriiev, A.; Huang, Zhiqiu; Zargaryan, D.; Taylor, A. M.; Anguner, E. O.; Muller, J.; de Naurois, M.; Giavitto, Gianluca; Parsons, R. D.; Moderski, R.; de Lavergne, M. de Bony; Vink, J.; Chen, A.; Casanova, S.; Hoerbe, M.; Sailer, S.; Ashkar, H.; Gallant, Y. A.; Mackey, J.; Zouari, S.; Joshi, V.; Hofmann, W.; Marandon, V.; Reville, B.; Panny, S.; Niemiec, J.; Ostrowski, M.; Ohm, Stefan; Sasaki, M.; Caroff, S.; Brun, F.; Fiasson, A.; Leuschner, F.; Komin, Nu.; Cangemi, F.; Schafer, J.; Ricarte, H. Rueda; de Clairfontaine, G. Fichet; Zech, A.; Batzofin, R.; Jamrozy, M.; van Eldik, C.; Maurin, G.; Voelk, H. J.; Werner, F.; Mohrmann, L.; Mitchell, A.; Malyshev, D.; Horns, D.; Ernenwein, J.-P.; Boettcher, M.; Lenain, J.-P.; Bylund, T.; Kosack, K.; Puehlhofer, G.; Breuhaus, M.; Zdziarski, A. A.; Wierzcholska, A.; Wilhelmi, E. de Ona; Becherini, Y.; Gabici, S.; Glicenstein, J. F.; Stawarz, L.; Specovius, A.; Cerruti, M.; Luashvili, A.; Spencer, S.; Renaud, M.; Zacharias, M.; Tanaka, T.; Sahakian, V.; Lypova, I.; Djannati-Atai, A.; Panter, M.; Marti-Devesa, G.

000481255 001__ 481255
000481255 005__ 20230214112926.0
000481255 0247_ $$2INSPIRETeX$$aHESS:2022baw
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000481255 0247_ $$2arXiv$$aarXiv:2201.05839
000481255 0247_ $$2altmetric$$aaltmetric:121171627
000481255 037__ $$aPUBDB-2022-04266
000481255 041__ $$aEnglish
000481255 082__ $$a520
000481255 088__ $$2arXiv$$aarXiv:2201.05839
000481255 1001_ $$0F.Aharonian.1$$aAharonian, F.$$b0
000481255 245__ $$aEvidence for $\gamma$-ray emission from the remnant of Kepler’s supernova based on deep H.E.S.S. observations
000481255 260__ $$c2022
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000481255 3367_ $$2BibTeX$$aARTICLE
000481255 3367_ $$2DataCite$$aOutput Types/Working Paper
000481255 500__ $$aA&A 662, A65 (2022). Accepted for publication in Astronomy and Astrophysics
000481255 520__ $$aObservations with imaging atmospheric Cherenkov telescopes (IACTs) have enhanced our knowledge of nearby supernova (SN) remnants with ages younger than 500 yr by establishing Cassiopeia A and the remnant of Tycho’s SN as very-high-energy (VHE) γ-ray sources. The remnant of Kepler’s SN, which is the product of the most recent naked-eye SN in our Galaxy, is comparable in age to the other two, but is significantly more distant. If the γ-ray luminosities of the remnants of Tycho’s and Kepler’s SNe are similar, then the latter is expected to be one of the faintest γ-ray sources within reach of the current generation IACT arrays. Here we report evidence at a statistical level of 4.6σ for a VHE signal from the remnant of Kepler’s SN based on deep observations by the High Energy Stereoscopic System (H.E.S.S.) with an exposure of 152 h. The measured integral flux above an energy of 226 GeV is ∼0.3% of the flux of the Crab Nebula. The spectral energy distribution (SED) reveals a γ-ray emitting component connecting the VHE emission observed with H.E.S.S. to the emission observed at GeV energies with Fermi-LAT. The overall SED is similar to that of the remnant of Tycho’s SN, possibly indicating the same nonthermal emission processes acting in both these young remnants of thermonuclear SNe.
000481255 536__ $$0G:(DE-HGF)POF4-613$$a613 - Matter and Radiation from the Universe (POF4-613)$$cPOF4-613$$fPOF IV$$x0
000481255 588__ $$aDataset connected to CrossRef, INSPIRE, Journals: bib-pubdb1.desy.de
000481255 650_7 $$2INSPIRE$$agamma ray: emission
000481255 650_7 $$2INSPIRE$$aenergy: high
000481255 650_7 $$2INSPIRE$$aCherenkov counter: atmosphere
000481255 650_7 $$2INSPIRE$$asupernova
000481255 650_7 $$2INSPIRE$$aenergy spectrum
000481255 650_7 $$2INSPIRE$$aVHE
000481255 650_7 $$2INSPIRE$$aHESS
000481255 650_7 $$2INSPIRE$$aGeV
000481255 650_7 $$2INSPIRE$$aflux
000481255 650_7 $$2INSPIRE$$aspectral
000481255 650_7 $$2INSPIRE$$aimaging
000481255 650_7 $$2INSPIRE$$aGLAST
000481255 650_7 $$2INSPIRE$$astatistical
000481255 650_7 $$2INSPIRE$$agalaxy
000481255 650_7 $$2autogen$$agamma rays: general
000481255 650_7 $$2autogen$$asupernovae: individual: Kepler
000481255 650_7 $$2autogen$$agamma-rays: general
000481255 650_7 $$2autogen$$asupernovae: individual: Kepler’s SN
000481255 650_7 $$2autogen$$aISM: supernova remnants
000481255 650_7 $$2autogen$$aradiation mechanisms: non-thermal
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