Chandra and HESS observations of the supernova remnant CTB 37B

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 RCG, Chounet LM, Clapson AC, Coignet G, Cornils R, Costamante L, Dalton M, Degrange B, Dickinson HJ, Djannati-Atai A, Domainko W, Drury LO, 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, 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, Renaud M, Rieger F, Reimer O, 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, 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 (2008)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2008

Journal

Publisher: EDP Sciences

Book Volume: 486

Pages Range: 829-836

Journal Issue: 3

DOI: 10.1051/0004-6361:200809655

Abstract

We discovered the > 100 GeV γ-ray source, HESS J1713-381, apparently associated with the shell-type supernova remnant (SNR) CTB 37B, using HESS in 2006. In 2007 we performed X-ray follow-up observations with Chandra with the aim of identifying a synchrotron counterpart to the TeV source and/or thermal emission from the SNR shell. These new Chandra data, together with additional TeV data, allow us to investigate the nature of this object in much greater detail than was previously possible. The new X-ray data reveal thermal emission from a ∼4′ region in close proximity to the radio shell of CTB 37B. The temperature of this emission implies an age for the remnant of ∼5000 years and an ambient gas density of ∼0.5 cm. Both these estimates are considerably uncertain due to the asymmetry of the SNR and possible modifications of the kinematics due to efficient cosmic ray (CR) acceleration. A bright (≈7 × 10 erg cm s) and unresolved (<1″) source (CXOUJ17.1405.7-381031), with a soft (Γ ≈ 3.3) non-thermal spectrum is also detected in coincidence with the radio shell. Absorption indicates a column density consistent with the thermal emission from the shell, suggesting a genuine association rather than a chance alignment. The observed TeV morphology is consistent with an origin in the complete shell of CTB 37B. The lack of diffuse non-thermal X-ray emission suggests an origin of the γ-ray emission via the decay of neutral pions produced in interactions of protons and nuclei, rather than inverse Compton (IC) emission from relativistic electrons. © ESO 2008.

Authors with CRIS profile

Involved external institutions

Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics Germany (DE) Durham University United Kingdom (GB) Université Toulouse III - Paul Sabatier France (FR) Ruprecht-Karls-Universität Heidelberg Germany (DE) Universität Hamburg (UHH) Germany (DE) University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot France (FR) Centre CEA de Saclay (Essonne) France (FR) Nicolaus Copernicus Astronomical Centre of the Polish Academy of Sciences Poland (PL) Noordwes-Universiteit / North-West University South Africa (ZA) Université Joseph Fourier (UJF Grenoble 1) France (FR) École Polytechnique - Université Paris-Saclay France (FR) Laboratoire d'Annecy le Vieux de Physique des Particules France (FR) Humboldt-Universität zu Berlin Germany (DE) Dublin Institute for Advanced Studies (DIAS) Ireland (IE) University of Montpellier / Université Montpellier France (FR) Stanford National Accelerator Laboratory (SLAC) United States (USA) (US) University of Leeds United Kingdom (GB) Eberhard Karls Universität Tübingen Germany (DE) Nicolaus Copernicus University (NCU) / Uniwersytet Mikołaja Kopernika w Toruniu (UMK) Poland (PL) Univerzita Karlova v Praze / Charles University in Prague Czech Republic (CZ) Jagiellonian University / Uniwersytet Jagielloński (UJ) Poland (PL) Stanford University United States (USA) (US) University of Adelaide Australia (AU) Ruhr-Universität Bochum (RUB) Germany (DE) Yerevan Physics Institute (YerPhI) / Երևանի Ֆիզիկայի Ինստիտուտ Armenia (AM) University of Namibia (UNAM) Namibia (NA) Université Bordeaux 1, Sciences et Technologies France (FR)

How to cite

APA:

van Eldik, C., Aharonian, F., Akhperjanian, A.G., De Almeida, U.B., Bazer-Bachi, A.R., Behera, B.,... Zech, A. (2008). Chandra and HESS observations of the supernova remnant CTB 37B. Astronomy & Astrophysics, 486(3), 829-836. https://doi.org/10.1051/0004-6361:200809655

MLA:

van Eldik, Christopher, et al. "Chandra and HESS observations of the supernova remnant CTB 37B." Astronomy & Astrophysics 486.3 (2008): 829-836.

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