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25 April 2024

» arxiv » 1601.4461

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Detailed spectral and morphological analysis of the shell type SNR RCW 86
H.E.S.S. Collaboration ; A. Abramowski ; F. Aharonian ; F. Ait Benkhali ; A.G. Akhperjanian ; E.O. Angüner ; M. Backes ; A. Balzer ; Y. Becherini ; J. Becker Tjus ; D. Berge ; S. Bernhard ; K. Bernlöhr ; E. Birsin ; R. Blackwell ; M. Böttcher ; C. Boisson ; J. Bolmont ; P. Bordas ; J. Bregeon ; F. Brun ; P. Brun ; M. Bryan ; T. Bulik ; J. Carr ; S. Casanova ; N. Chakraborty ; R. Chalme-Calvet ; R.C.G. Chaves ; A. Chen ; J. Chevalier ; M. Chretien ; S. Colafrancesco ; G. Cologna ; B. Condon ; J. Conrad ; C. Couturier ; Y. Cui ; I.D. Davids ; B. Degrange ; C. Deil ; P. deWilt ; A. Djannati-Atai ; W. Domainko ; A. Donath ; L.O'C. Drury ; G. Dubus ; K. Dutson ; J. Dyks ; M. Dyrda ; T. Edwards ; K. Egberts ; P. Eger ; J.-P. Ernenwein ; P. Espigat ; C. Farnier ; S. Fegan ; F. Feinstein ; M.V. Fernandes ; D. Fernandez ; A. Fiasson ; G. Fontaine ; A. Förster ; M. Füßling ; S. Gabici ; M. Gajdus ; Y.A. Gallant ; T. Garrigoux ; G. Giavitto ; B. Giebels ; J.F. Glicenstein ; D. Gottschall ; A. Goyal ; M.-H. Grondin ; M. Grudzińska ; D. Hadasch ; S. Häffner ; J. Hahn ; J. Hawkes ; G. Heinzelmann ; G. Henri ; G. Hermann ; O. Hervet ; A. Hillert ; J.A. Hinton ; W. Hofmann ; P. Hofverberg ; C. Hoischen ; M. Holler ; D. Horns ; A. Ivascenko ; A. Jacholkowska ; M. Jamrozy ; M. Janiak ; F. Jankowsky ; I. Jung-Richardt ; M.A. Kastendieck ; K. Katarzynski ; U. Katz ; D. Kerszberg ; B. Khelifi ; M. Kieffer ; S. Klepser ; D. Klochkov ; W. Kluzniak ; D. Kolitzus ; Nu. Komin ; K. Kosack ; S. Krakau ; F. Krayzel ; P.P. Krüger ; H. Laffon ; G. Lamanna ; J. Lau ; J. Lefaucheur ; V. Lefranc ; A. Lemiere ; M. Lemoine-Goumard ; J.-P. Lenain ; T. Lohse ; A. Lopatin ; M. Lorentz ; C.-C. Lu ; R. Lui ; V. Marandon ; A. Marcowith ; C. Mariaud ; R. Marx ; G. Maurin ; N. Maxted ; M. Mayer ; P.J. Meintjes ; U. Menzler ; M. Meyer ; A.M.W. Mitchell ; R. Moderski ; M. Mohamed ; K. Moraa ; E. Moulin ; T. Murach ; M. de Naurois ; J. Niemiec ; L. Oakes ; H. Odaka ; Öttl ; S. Ohm ; B. Opitz ; M. Ostrowski ; I. Oya ; M. Panter ; R.D. Parsons ; M. Paz Arribas ; N.W. Pekeur ; G. Pelletier ; P.-O. Petrucci ; B. Peyaud ; S. Pita ; H. Poon ; D. Prokhorov ; H. Prokoph ; G. Pühlhofer ; M. Punch ; A. Quirrenbach ; S. Raab ; I. Reichardt ; A. Reimer ; O. Reimer ; M. Renaud ; R. de los Reyes ; F. Rieger ; C. Romoli ; S. Rosier-Lees ; G. Rowell ; B. Rudak ; C.B. Rulten ; V. Sahakian ; D. Salek ; D.A. Sanchez ; A. Santangelo ; M. Sasaki ; R. Schlickeiser ; F. Schüssler ; A. Schulz ; U. Schwanke ; S. Schwemmer ; A.S. Seyffert ; R. Simoni ; H. Sol ; F. Spanier ; G. Spengler ; F. Spies ; L. Stawarz ; R. Steenkamp ; C. Stegmann ; F. Stinzing ; K. Stycz ; I. Sushch ; J.-P. Tavernet ; T. Tavernier ; A.M. Taylor ; R. Terrier ; M. Tluczykont ; C. Trichard ; R. Tuffs ; K. Valerius ; J. van der Walt ; C. van Eldik ; B. van Soelen ; G. Vasileiadis ; J. Veh ; C. Venter ; A. Viana ; P. Vincent ; J. Vink ; F. Voisin ; H.J. Völk ; T. Vuillaume ; S.J. Wagner ; P. Wagner ; R.M. Wagner ; M. Weidinger ; R. White ; A. Wierzcholska ; P. Willmann ; A. Wörnlein ; D. Wouters ; R. Yang ; V. Zabalza ; D. Zaborov ; M. Zacharia ; A.A. Zdziarski ; A. Zech ; F. Zefi ; N. Zywucka ;
Date:	18 Jan 2016
Abstract:	Aims: We aim for an understanding of the morphological and spectral properties of the supernova remnant RCW~86 and for insights into the production mechanism leading to the RCW~86 very high-energy gamma-ray emission. Methods: We analyzed High Energy Spectroscopic System data that had increased sensitivity compared to the observations presented in the RCW~86 H.E.S.S. discovery publication. Studies of the morphological correlation between the 0.5-1~keV X-ray band, the 2-5~keV X-ray band, radio, and gamma-ray emissions have been performed as well as broadband modeling of the spectral energy distribution with two different emission models. Results:We present the first conclusive evidence that the TeV gamma-ray emission region is shell-like based on our morphological studies. The comparison with 2-5~keV X-ray data reveals a correlation with the 0.4-50~TeV gamma-ray emission.The spectrum of RCW~86 is best described by a power law with an exponential cutoff at $E_{cut}=(3.5pm 1.2_{stat})$ TeV and a spectral index of $Gamma$~$1.6pm 0.2$. A static leptonic one-zone model adequately describes the measured spectral energy distribution of RCW~86, with the resultant total kinetic energy of the electrons above 1 GeV being equivalent to $sim$0.1\% of the initial kinetic energy of a Type I a supernova explosion. When using a hadronic model, a magnetic field of $B$~100$mu$G is needed to represent the measured data. Although this is comparable to formerly published estimates, a standard E$^{-2}$ spectrum for the proton distribution cannot describe the gamma-ray data. Instead, a spectral index of $Gamma_p$~1.7 would be required, which implies that ~$7 imes 10^{49}/n_{cm^{-3}}$erg has been transferred into high-energy protons with the effective density $n_{cm^{-3}}=n/ 1$ cm^-3. This is about 10\% of the kinetic energy of a typical Type Ia supernova under the assumption of a density of 1~cm^-3.
Source:	arXiv, 1601.4461
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