Evidence for γ-ray emission from the remnant of Kepleras supernova based on deep H.E.S.S. observations

Aharonian F, Benkhali FA, Angüner EO, Ashkar H, Backes M, Martins VB, Batzofin R, Becherini Y, Berge D, Bernlöhr K, Böttcher M, Boisson C, Bolmont J, Lavergne MDBD, Breuhaus M, Brose R, Brun F, Bulik T, Bylund T, Cangemi F, Caroff S, Casanova S, Cerruti M, Chand T, Chen A, Chibueze O, Cotter G, Cristofari P, Mbarubucyeye JD, Devin J, Djannati-Ataï A, Dmytriiev A, Egberts K, Einecke S, Ernenwein JP, Feijen K, Fiasson A, Clairfontaine GFD, Fontaine G, Funk S, Gabici S, Gallant YA, Ghafourizadeh S, Giavitto G, Giunti L, Glawion D, Glicenstein JF, Grondin MH, Hörbe M, Hofmann W, Holch TL, Holler M, Horns D, Huang Z, Jamrozy M, Joshi V, Jung-Richardt I, Kasai E, Katarzyåski K, Katz U, Khélifi B, Kluåºniak W, Komin N, Kosack K, Kostunin D, Lemière A, Lemoine-Goumard M, Lenain JP, Leuschner F, Lohse T, Luashvili A, Lypova I, Mackey J, Malyshev D, Marandon V, Marchegiani P, Marcowith A, Martí-Devesa G, Marx R, Maurin G, Meintjes PJ, Meyer M, Mitchell A, Moderski R, Mohrmann L, Montanari A, Moulin E, Muller J, Nakashima K, De Naurois M, Nayerhoda A, Niemiec J, Priyana Noel A, Oâbrien P, Ohm S, Olivera-Nieto L, De Ona Wilhelmi E, Ostrowski M, Panny S, Panter M, Parsons RD, Peron G, Poireau V, Prokhorov DA, Pühlhofer G, Punch M, Quirrenbach A, Reichherzer P, Reimer A, Reimer O, Renaud M, Reville B, Rieger F, Rowell G, Rudak B, Ricarte HR, Sahakian V, Sailer S, Salzmann H, Sanchez DA, Santangelo A, Zouari S, Sasaki M, Schäfer J, Schüssler F, Schutte HM, Schwanke U, Shapopi JN, Simoni R, Sol H, Specovius A, Spencer ST, Stawarz , Steinmassl S, Steppa C, Sushch I, Takahashi T, Tanaka T, Taylor AM, Terrier R, Tsirou M, Uchiyama Y, Unbehaun T, van Eldik C, Veh J, Vink J, Völk HJ, Wagner SJ, Werner F, White R, Wierzcholska A, Wong YW, Yusafzai A, Zacharias M, Zargaryan D, Zdziarski AA, Zech A, Zhu SJ, Zywucka N (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Book Volume: 662

Article Number: A65

DOI: 10.1051/0004-6361/202243096

Abstract

Observations 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 Tychoas SN as very-high-energy (VHE) ?-ray sources. The remnant of Kepleras 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 ?-ray luminosities of the remnants of Tychoas and Kepleras SNe are similar, then the latter is expected to be one of the faintest ?-ray sources within reach of the current generation IACT arrays. Here we report evidence at a statistical level of 4.6? for a VHE signal from the remnant of Kepleras 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 ?-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 Tychoas SN, possibly indicating the same nonthermal emission processes acting in both these young remnants of thermonuclear SNe.

Authors with CRIS profile

Involved external institutions

University of Namibia (UNAM) Namibia (NA) Dublin Institute for Advanced Studies (DIAS) Ireland (IE) Universität Hamburg (UHH) Germany (DE) Université Paris-Sud France (FR) Université de Bordeaux France (FR) Ruprecht-Karls-Universität Heidelberg Germany (DE) École Polytechnique - Université Paris-Saclay France (FR) Jagiellonian University / Uniwersytet Jagielloński (UJ) Poland (PL) Eberhard Karls Universität Tübingen Germany (DE) Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics Germany (DE) Laboratoire Univers et Théories (LUTH) / Laboratory of the Universe and Theories France (FR) Konan University / 甲南大学 Japan (JP) Noordwes-Universiteit / North-West University South Africa (ZA) Universität Potsdam Germany (DE) Nicolaus Copernicus Astronomical Centre of the Polish Academy of Sciences Poland (PL) Rikkyo University / 立教大学 Japan (JP) University of Amsterdam Netherlands (NL) University of Oxford United Kingdom (GB) Humboldt-Universität zu Berlin Germany (DE) Sorbonne Université France (FR) University of Montpellier / Université Montpellier France (FR) Leopold-Franzens-Universität Innsbruck / University of Innsbruck Austria (AT) Institute of Nuclear Physics Polish Academy of Sciences / Instytut Fizyki Jądrowej im. Henryka Niewodniczańskiego Polskiej Akademii Nauk Poland (PL) University of Savoy Mont Blanc / Université Savoie Mont Blanc France (FR) University of Adelaide Australia (AU) Yerevan Physics Institute (YerPhI) / Երևանի Ֆիզիկայի Ինստիտուտ Armenia (AM) Deutsches Elektronen-Synchrotron DESY Germany (DE) University of the Witwatersrand (WITS) South Africa (ZA) University of Warsaw / Uniwersytet Warszawski Poland (PL) University of the Free State South Africa (ZA) Linnaeus University (LNU) / Linnéuniversitetet Sweden (SE) Nicolaus Copernicus University (NCU) / Uniwersytet Mikołaja Kopernika w Toruniu (UMK) Poland (PL) University of Tokyo Japan (JP) University of Leicester United Kingdom (GB) Aix-Marseille University / Aix-Marseille Université France (FR)

How to cite

APA:

Aharonian, F., Benkhali, F.A., Angüner, E.O., Ashkar, H., Backes, M., Martins, V.B.,... Zywucka, N. (2022). Evidence for γ-ray emission from the remnant of Kepleras supernova based on deep H.E.S.S. observations. Astronomy & Astrophysics, 662. https://doi.org/10.1051/0004-6361/202243096

MLA:

Aharonian, F., et al. "Evidence for γ-ray emission from the remnant of Kepleras supernova based on deep H.E.S.S. observations." Astronomy & Astrophysics 662 (2022).

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