Deeper HESS observations of Vela Junior (RX J0852.0-4622): Morphology studies and resolved spectroscopy

Abdalla H, Abramowski A, Aharonian F, Benkhali FA, Akhperjanian AG, Andersson T, Anguener EO, Arakawa M, Arrieta M, Aubert P, Backes M, Balzer A, Barnard M, Becherini Y, Tjus JB, Berge D, Bernhard S, Bernloehr K, Blackwell R, Boettcher M, Boisson C, Bolmont J, Bordas P, Bregeon J, Brun F, Brun P, Bryan M, Bilchele M, Bulik T, Capasso M, Carr J, Casanova S, Cerruti M, Chakraborty N, Chalme-Calvet R, Chaves RCG, Chen A, Chevalier J, Chretien M, Coffaro M, Colafrancesco S, Cologna G, Condon B, Conrad J, Cui Y, Davids ID, Decock J, Degrange B, Deil C, Devin J, Dewilt P, Dirson L, Djannati-Atai A, Domainko W, Donath A, Drury LO, Dutson K, Dyks J, Edwards T, Egberts K, Eger P, Ernenwein JP, Eschbach S, Farnier C, Fegan S, Fernandes MV, Fiasson A, Fontaine G, Foerster A, Funk S, Fuessling M, Gabici S, Gajdus M, Gallant YA, Garrigoux T, Giavitto G, Giebels B, Glicenstein JF, Gottschall D, Goya A, Grondin MH, Hahn J, Haupt M, Hawkes J, Heinzelmann G, Henri G, Hermann G, Hervet O, Hinton JA, Hofmann W, Hoischen C, Holler M, Horns D, Ivascenko A, Iwasaki H, Jacholkowska A, Jamrozy M, Janiak M, Jankowsky D, Jankowsky F, Jingo M, Jogler T, Jouvin L, Jung-Richardt I, Kastendieck MA, Katarzynski K, Katsuragawa M, Katz U, Kerszberg D, Khangulyan D, Khelifi B, Kieffer M, King J, Klepser S, Klochkov D, Kluzniak W, Kolitzus D, Komin N, Kosack K, Krakau S, Kraus M, Krueger PP, Laffon H, Lamanna G, Lau J, Lees JP, Lefaucheur J, Lefranc V, Lemiere A, Lemoine-Goumard M, Lenain JP, Leser E, Lohse T, Lorentz M, Liu R, Lopez-Coto R, Lypova I, Marandon V, Marcowith A, Mariaud C, Marx R, Maurin G, Maxted N, Mayer M, Meintjes PJ, Meyer M, Mitche AMW, Moderski R, Mohamed M, Mohrmann L, Mora K, Moulin E, Murach T, Nakashima S, De Naurois M, Niederwanger F, Niemiec J, Oakes L, O'Brien P, Odaka H, Oettl S, Ohm S, Ostrowski M, Oya I, Padovani M, Panter M, Parsons RD, Arribas MP, Pekeur NW, Pelletier G, Perennes C, Petrucci PO, Peyaud B, Piel Q, Pita S, Poon H, Prokhorov D, Prokoph H, Pühlhofer G, Punch M, Quirrenbach A, Raab S, Reimer A, Reimer O, Renaud M, De Los Reyes R, Richter S, Rieger F, Romoli C, Rowell G, Rudak B, Rulten CB, Sahakian V, Saito S, Salek D, Sanchez DA, Santangelo A, Sasaki M, Schlickeiser R, Schuessler F, Schulz A, Schwanke U, Schwemmer S, Seglar-Arroyo M, Settimo M, Seyffert AS, Shafi N, Shilon I, Simoni R, Sol H, Spanier F, Spengler G, Spies F, Stawarz L, Steenkamp R, Stegmann C, Stycz K, Sushch I, Takahashi T, Tavernet JP, Tavernier T, Taylor AM, Terrier R, Tibaldo L, Tiziani D, Tluczykont M, Trichard C, Tsuji N, Tuffs R, Uchiyama Y, Van Der Walt DJ, van Eldik C, Van Rensburg C, Van Soelen B, Vasileiadis G, Veh J, Venter C, Viana A, Vincent P, Vink J, Voisin F, Voelk HJ, Vuillaume T, Wadiasingh Z, Wagner SJ, Wagner P, Wagner RM, White R, Wierzcholska A, Willmann P, Wörnlein A, Wouters D, Yang R, Zabalza V, Zaborov D, Zacharias M, Zanin R, Zdziarski AA, Zech A, Zefi F, Ziegler A, Zywucka N (2018)


Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2018

Journal

Publisher: EDP SCIENCES S A

Book Volume: 612

Article Number: A7

DOI: 10.1051/0004-6361/201630002

Abstract

Aims. We study gamma-ray emission from the shell-type supernova remnant (SNR) RXJ0852.0-4622 to better characterize its spectral properties and its distribution over the SNR.Methods. The analysis of an extended High Energy Spectroscopic System (H.E.S.S.) data set at very high energies (E > 100 GeV) permits detailed studies, as well as spatially resolved spectroscopy, of the morphology and spectrum of the whole RXJ0852.0-4622 region. The H.E.S.S. data are combined with archival data from other wavebands and interpreted in the framework of leptonic and hadronic models. The joint Fermi-LAT-H.E.S.S. spectrum allows the direct determination of the spectral characteristics of the parent particle population in leptonic and hadronic scenarios using only GeV-TeV data.Results. An updated analysis of the H.E.S.S. data shows that the spectrum of the entire SNR connects smoothly to the high-energy spectrum measured by Fermi-LAT. The increased data set makes it possible to demonstrate that the H.E.S.S. spectrum deviates significantly from a power law and is well described by both a curved power law and a power law with an exponential cutoff at an energy of E-cut = (6.7 +/- 1.2(stat) +/- 1.2(syst)) TeV. The joint Fermi-LAT-H.E.S.S. spectrum allows the unambiguous identification of the spectral shape as a power law with an exponential cutoff. No significant evidence is found for a variation of the spectral parameters across the SNR, suggesting similar conditions of particle acceleration across the remnant. A simple modeling using one particle population to model the SNR emission demonstrates that both leptonic and hadronic emission scenarios remain plausible. It is also shown that at least a part of the shell emission is likely due to the presence of a pulsar wind nebula around PSR J0855-4644.

Authors with CRIS profile

Involved external institutions

Noordwes-Universiteit / North-West University ZA South Africa (ZA) Universität Hamburg (UHH) DE Germany (DE) Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics DE Germany (DE) National Academy of Sciences of the Republic of Armenia (NAS RA) / Հայաստանի Հանրապետության գիտությունների ազգային ակադեմիա, ՀՀ ԳԱԱ AM Armenia (AM) Linnaeus University (LNU) / Linnéuniversitetet SE Sweden (SE) Institute of Nuclear Physics Polish Academy of Sciences / Instytut Fizyki Jądrowej im. Henryka Niewodniczańskiego Polskiej Akademii Nauk PL Poland (PL) Rikkyo University / 立教大学 JP Japan (JP) University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot FR France (FR) University of Savoy Mont Blanc / Université Savoie Mont Blanc FR France (FR) University of Namibia (UNAM) NA Namibia (NA) University of Amsterdam NL Netherlands (NL) Ruhr-Universität Bochum (RUB) DE Germany (DE) Leopold-Franzens-Universität Innsbruck / University of Innsbruck AT Austria (AT) University of Adelaide AU Australia (AU) University of Paris 6 - Pierre et Marie Curie / Université Paris VI Pierre et Marie Curie (UPMC) FR France (FR) University of Montpellier / Université Montpellier FR France (FR) Institut national de physique nucléaire et de physique des particules (IN2P3) FR France (FR) Commissariat à l'énergie atomique FR France (FR) University of Warsaw / Uniwersytet Warszawski PL Poland (PL) Eberhard Karls Universität Tübingen DE Germany (DE) Aix-Marseille University / Aix-Marseille Université FR France (FR) University of the Witwatersrand (WITS) ZA South Africa (ZA) Ruprecht-Karls-Universität Heidelberg DE Germany (DE) Stockholm University / Stockholms universitet SE Sweden (SE) École Polytechnique - Université Paris-Saclay FR France (FR) Dublin Institute for Advanced Studies (DIAS) IE Ireland (IE) University of Leicester GB United Kingdom (GB) Polska Akademia Nauk (PAN) / Polish Academy of Sciences PL Poland (PL) Universität Potsdam DE Germany (DE) Deutsches Elektronen-Synchrotron DESY DE Germany (DE) Humboldt-Universität zu Berlin DE Germany (DE) Jagiellonian University / Uniwersytet Jagielloński (UJ) PL Poland (PL) University of Grenoble Alpes (UGA) / Université de Grenoble FR France (FR) Nicolaus Copernicus University (NCU) / Uniwersytet Mikołaja Kopernika w Toruniu (UMK) PL Poland (PL) Japan Aerospace eXploration Agency (JAXA) JP Japan (JP) University of the Free State ZA South Africa (ZA)

How to cite

APA:

Abdalla, H., Abramowski, A., Aharonian, F., Benkhali, F.A., Akhperjanian, A.G., Andersson, T.,... Zywucka, N. (2018). Deeper HESS observations of Vela Junior (RX J0852.0-4622): Morphology studies and resolved spectroscopy. Astronomy & Astrophysics, 612. https://doi.org/10.1051/0004-6361/201630002

MLA:

Abdalla, H., et al. "Deeper HESS observations of Vela Junior (RX J0852.0-4622): Morphology studies and resolved spectroscopy." Astronomy & Astrophysics 612 (2018).

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