Discovery of a VHE gamma-ray source coincident with the supernova remnant CTB 37A

Beitrag in einer Fachzeitschrift
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Details zur Publikation

Autorinnen und Autoren: van Eldik C, Aharonian F, Akhperjanian AG, De Almeida UB, Bazer-Bachi AR, Behera B, Beilicke M, Benbow W, Bernloehr K, Boisson C, Borrel V, Braun I, Brion E, Brucker J, Buehler R, Bulik T, Buesching I, Boutelier T, Carrigan S, Chadwick PM, Chaves R, Chounet LM, Clapson AC, Coignet G, Cornils R, Costamante L, Dalton M, Degrange B, Dickinson HJ, Djannati-Atai A, Domainko W, Drury IO, Dubois F, Dubus G, Dyks J, Egberts K, Emmanoulopoulos D, Espigat P, Farnier C, Feinstein F, Fiasson A, Foerster A, Fontaine G, Funk S, Fuessling M, Gabici S, Gallant YA, Giebels B, Glicenstein JF, Glueck B, Goret P, Hadjichristidis C, Hauser D, Hauser M, Heinzelmann G, Henri G, Hermann G, Hinton JA, Hoffmann A, Hofmann W, Holleran M, Hoppe S, Horns D, Jacholkowska A, De Jager OC, Jung I, Katarzynski K, Kaufmann S, Kendziorra E, Kerschhaggl M, Khangulyan D, Khelifi B, Keogh D, Komin N, Kosack K, Lamanna G, Latham IJ, Lemoine-Goumard M, Lenain JP, Lohse T, Martin JM, Martineau-Huynh O, Marcowith A, Masterson C, Maurin D, Mccomb TJL, Moderski R, Moulin E, Nakajima H, Naumann-Godo M, De Naurois M, Nedbal D, Nekrassov D, Nolan SJ, Ohm S, Olive JP, Wilhelmi EDO, Orford KJ, Osborne JL, Ostrowski M, Panter M, Pedaletti G, Pelletier G, Petrucci PO, Pita S, Puehlhofer G, Punch M, Quirrenbach A, Raubenheimer BC, Raue M, Rayner SM, Reimer O, Renaud M, Rieger F, Ripken J, Rob L, Rosier-Lees S, Rowell G, Rudak B, Ruppel J, Sahakian V, Santangelo A, Schlickeiser R, Schoeck FM, Schroeder R, Schwanke U, Schwarzburg S, Schwemmer S, Shalchi A, Skilton JL, Sol H, Spangler D, Stawarz L, Steenkamp R, Stegmann C, Superina G, Tam PH, Tavernet JP, Terrier R, Tibolla O, Van Eldik C, Vasileiadis G, Venter C, Vialle JP, Vincent P, Vivier M, Voelk HJ, Volpe F, Wagner SJ, Ward M, Zdziarski AA, Zech A
Zeitschrift: Astronomy & Astrophysics
Verlag: EDP Sciences
Jahr der Veröffentlichung: 2008
Band: 490
Heftnummer: 2
Seitenbereich: 685-693
ISSN: 0004-6361
Sprache: Englisch


Abstract


Aims. The supernova remnant (SNR) complex CTB 37 is an interesting candidate for observations with very high energy (VHE) γ-ray telescopes such as HESS. In this region, three SNRs are seen. One of them is potentially associated with several molecular clouds, a circumstance that can be used to probe the acceleration of hadronic cosmic rays. Methods. This region was observed with the HESS Cherenkov telescopes and the data were analyzed with standard HESS procedures. Recent X-ray observations with Chandra and XMM-Newton were used to search for X-ray counterparts. Results. The discovery of a new VHE γ-ray source HESS J1714-385 coincident with the remnant CTB 37A is reported. The energy spectrum is well described by a power-law with a photon index of Γ = 2.30 ± 0.13 and a differential flux at 1 TeV of Φ = (8.7 ± 1.0 ± 1.8) × 10 cm s TeV. The integrated flux above 1 TeV is equivalent to 3% of the flux of the Crab nebula above the same energy. This VHE γ-ray source is a counterpart candidate for the unidentified EGRET source 3EG J1714-3857. The observed VHE emission is consistent with the molecular gas distribution around CTB 37A; a close match is expected in a hadronic scenario for γ-ray production. The X-ray observations reveal the presence of thermal X-rays from the NE part of the SNR. In the NW part of the remnant, an extended non-thermal X-ray source, CXOU J171419.8-383023, is discovered as well. Possible connections of the X-ray emission to the newly found VHE source are discussed. © ESO 2008.



FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Brucker, Julia Dr. rer. nat.
Lehrstuhl für Physik
van Eldik, Christopher Prof. Dr.
Professur für Experimentalphysik


Einrichtungen weiterer Autorinnen und Autoren

Centre CEA de Saclay (Essonne)
Centre d’étude spatiale des rayonnements (CESR)
Dublin Institute for Advanced Studies (DIAS)
Durham University
Eberhard Karls Universität Tübingen
École Polytechnique - Université Paris-Saclay
Humboldt-Universität zu Berlin
Jagiellonian University / Uniwersytet Jagielloński (UJ)
Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics
National Center for Scientific Research / Centre national de la recherche scientifique (CNRS)
Nicolaus Copernicus Astronomical Centre of the Polish Academy of Sciences
Nicolaus Copernicus University / Uniwersytet Mikołaja Kopernika w Toruniu (UMK)
Noordwes-Universiteit / North-West University
Osaka University
Ruhr-Universität Bochum (RUB)
Ruprecht-Karls-Universität Heidelberg
Stanford University
Universität Hamburg
Université Bordeaux 1, Sciences et Technologies
Université Joseph Fourier (UJF Grenoble 1)
University of Adelaide
University of Leeds
University of Montpellier / Université Montpellier
University of Namibia (UNAM)
University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot
Univerzita Karlova v Praze / Charles University in Prague
Yerevan Physics Institute (YerPhI) / Երևանի Ֆիզիկայի Ինստիտուտ


Zitierweisen

APA:
van Eldik, C., Aharonian, F., Akhperjanian, A.G., De Almeida, U.B., Bazer-Bachi, A.R., Behera, B.,... Zech, A. (2008). Discovery of a VHE gamma-ray source coincident with the supernova remnant CTB 37A. Astronomy & Astrophysics, 490(2), 685-693. https://dx.doi.org/10.1051/0004-6361:200809722

MLA:
van Eldik, Christopher, et al. "Discovery of a VHE gamma-ray source coincident with the supernova remnant CTB 37A." Astronomy & Astrophysics 490.2 (2008): 685-693.

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Zuletzt aktualisiert 2018-28-10 um 13:51