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

Journal
Date Issued
2018
Author(s)
H. E. S. S. Collaboration
•
Abdalla, H.
•
Abramowski, A.
•
Aharonian, F.
•
Ait Benkhali, F.
•
Akhperjanian, A. G.
•
Angüner, E. O.
•
Arakawa, M.
•
Arrieta, M.
•
Aubert, P.
•
Backes, M.
•
Balzer, A.
•
Barnard, M.
•
Becherini, Y.
•
Becker Tjus, J.
•
Berge, D.
•
Bernhard, S.
•
Bernlöhr, K.
•
Blackwell, R.
•
Böttcher, M.
•
Boisson, C.
•
Bolmont, J.
•
Bordas, P.
•
Bregeon, J.
•
Brun, F.
•
Brun, P.
•
Bryan, M.
•
Büchele, M.
•
Bulik, T.
•
Capasso, M.
•
Carr, J.
•
Casanova, S.
•
Cerruti, M.
•
Chakraborty, N.
•
Chalme-Calvet, R.
•
Chaves, R. C. G.
•
Chen, A.
•
Chevalier, J.
•
Chrétien, M.
•
Coffaro, M.
•
Colafrancesco, S.
•
Cologna, G.
•
Condon, B.
•
Conrad, J.
•
Cui, Y.
•
Davids, I. D.
•
Decock, J.
•
Degrange, B.
•
Deil, C.
•
Devin, J.
•
deWilt, P.
•
Dirson, L.
•
Djannati-Ataï, A.
•
Domainko, W.
•
Donath, A.
•
Drury, L. O. 'C.
•
Dutson, K.
•
Dyks, J.
•
Edwards, T.
•
Egberts, K.
•
Eger, P.
•
Ernenwein, J. -P.
•
Eschbach, S.
•
Farnier, C.
•
Fegan, S.
•
Fernandes, M. V.
•
Fiasson, A.
•
Fontaine, G.
•
Förster, A.
•
Funk, S.
•
Füßling, M.
•
Gabici, S.
•
Gajdus, M.
•
Gallant, Y. A.
•
Garrigoux, T.
•
Giavitto, G.
•
Giebels, B.
•
Glicenstein, J. F.
•
Gottschall, D.
•
Goyal, A.
•
Grondin, M. -H.
•
Hahn, J.
•
Haupt, M.
•
Hawkes, J.
•
Heinzelmann, G.
•
Henri, G.
•
Hermann, G.
•
Hervet, O.
•
Hinton, J. A.
•
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, M. A.
•
Katarzyński, K.
•
Katsuragawa, M.
•
Katz, U.
•
Kerszberg, D.
•
Khangulyan, D.
•
Khélifi, B.
•
Kieffer, M.
•
King, J.
•
Klepser, S.
•
Klochkov, D.
•
Kluźniak, W.
•
Kolitzus, D.
•
Komin, Nu.
•
Krakau, S.
•
Kraus, M.
•
Krüger, P. P.
•
Laffon, H.
•
Lamanna, G.
•
Lau, J.
•
Lees, J. -P.
•
Lefaucheur, J.
•
Lefranc, V.
•
Lemière, A.
•
Lemoine-Goumard, M.
•
Lenain, J. -P.
•
Leser, E.
•
Lohse, T.
•
Lorentz, M.
•
Liu, R.
•
López-Coto, R.
•
Lypova, I.
•
Marandon, V.
•
Marcowith, A.
•
Mariaud, C.
•
Marx, R.
•
Maurin, G.
•
Maxted, N.
•
Mayer, M.
•
Meintjes, P. J.
•
Meyer, M.
•
Mitchell, A. M. W.
•
Moderski, R.
•
Mohamed, M.
•
Mohrmann, L.
•
Morå, K.
•
Moulin, E.
•
Murach, T.
•
Nakashima, S.
•
de Naurois, M.
•
Niederwanger, F.
•
Niemiec, J.
•
Oakes, L.
•
O'Brien, P.
•
Odaka, H.
•
Öttl, S.
•
Ohm, S.
•
Ostrowski, M.
•
Oya, I.
•
•
Panter, M.
•
Parsons, R. D.
•
Paz Arribas, M.
•
Pekeur, N. W.
•
Pelletier, G.
•
Perennes, C.
•
Petrucci, P. -O.
•
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, C. B.
•
Sahakian, V.
•
Saito, S.
•
Salek, D.
•
Sanchez, D. A.
•
Santangelo, A.
•
Sasaki, M.
•
Schlickeiser, R.
•
Schüssler, F.
•
Schulz, A.
•
Schwanke, U.
•
Schwemmer, S.
•
Seglar-Arroyo, M.
•
Settimo, M.
•
Seyffert, A. S.
•
Shafi, N.
•
Shilon, I.
•
Simoni, R.
•
Sol, H.
•
Spanier, F.
•
Spengler, G.
•
Spies, F.
•
Stawarz, Ł.
•
Steenkamp, R.
•
Stegmann, C.
•
Stycz, K.
•
Sushch, I.
•
Takahashi, T.
•
Tavernet, J. -P.
•
Tavernier, T.
•
Taylor, A. M.
•
Terrier, R.
•
Tibaldo, L.
•
Tiziani, D.
•
Tluczykont, M.
•
Trichard, C.
•
Tsuji, N.
•
Tuffs, R.
•
Uchiyama, Y.
•
van der Walt, D. J.
•
van Eldik, C.
•
van Rensburg, C.
•
van Soelen, B.
•
Vasileiadis, G.
•
Veh, J.
•
Venter, C.
•
Viana, A.
•
Vincent, P.
•
Vink, J.
•
Voisin, F.
•
Völk, H. J.
•
Vuillaume, T.
•
Wadiasingh, Z.
•
Wagner, S. J.
•
Wagner, P.
•
Wagner, R. M.
•
White, R.
•
Wierzcholska, A.
•
Willmann, P.
•
Wörnlein, A.
•
Wouters, D.
•
Yang, R.
•
Zabalza, V.
•
Zaborov, D.
•
Zacharias, M.
•
Zanin, R.
•
Zdziarski, A. A.
•
Zech, A.
•
Zefi, F.
•
Ziegler, A.
•
Żywucka, N.
DOI
Abstract

Aims: We study γ-ray emission from the shell-type supernova remnant (SNR) RX J0852.0-4622 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 RX J0852.0-4622 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 Ecut = (6.7 ± 1.2stat ± 1.2syst) 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.

A FITS image of the region of interest and two text files describing the H.E.S.S. spectrum of RX J0852.0-4622 are only available at the CDS via anonymous ftp to http://cdsarc.u-strasbg.fr (http://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/612/A7

Volume
612
Start page
A7
Uri
Url
Issn Identifier
0004-6361
Ads BibCode
2018A&A...612A...7H
Rights
open.access
File(s)
Loading...
Thumbnail Image
Name

aa30002-16.pdf

Description
PDF editoriale
Size

3.61 MB

Format

Adobe PDF

Checksum (MD5)

bf6bd8ffceddbd5a31ef5b25462222e6

Loading...
Thumbnail Image
Name

arxiv1611.01863.pdf

Description
pdf
Size

3.63 MB

Format

Adobe PDF

Checksum (MD5)

6772ed563a75982845e8bbe5417f185a