Detection of very-high-energy γ-ray emission from the vicinity of PSRB1706-44 and G343.1-2.3 with H.E.S.S.

Abramowski A, Acero F, Aharonian F, Akhperjanian AG, Anton G, Barnacka A, De Almeida UB, Bazer-Bachi AR, Becherini Y, Becker J, Behera B, Bernloehr K, Bochow A, Boisson C, Bolmont J, Bordas P, Borrel V, Brucker J, Brun F, Brun P, Bulik T, Buesching I, Carrigan S, Casanova S, Cerruti M, Chadwick PM, Charbonnier A, Chaves RCG, Cheesebrough A, Conrad J, Chounet LM, Clapson AC, Coignet G, Dalton M, Daniel MK, Davids ID, Degrange B, Deil C, Dickinson HJ, Djannati-Atai A, Domainko W, Drury LO, Dubois F, Dubus G, Dyks J, Dyrda M, Egberts K, Eger P, Espigat P, Fallon L, Farnier C, Fegan S, Feinstein F, Fernandes MV, Fiasson A, Foerster A, Fontaine G, Fuessling M, Gabici S, Gallant YA, Gast H, Gerard L, Gerbig D, Giebels B, Glicenstein JF, Glueck B, Goret P, Göring D, Hague JD, Hampf D, Hauser M, Heinz S, Heinzelmann G, Henri G, Hermann G, Hinton JA, Hoffmann A, Hofmann W, Hofverberg P, Holleran M, Hoppe S, Horns D, Jacholkowska A, De Jager OC, Jahn C, Jamrozy M, Jung I, Kastendieck MA, Katarzynski K, Katz U, Kaufmann S, Kerschhaggl M, Khangulyan D, Khelifi B, Keogh D, Kluzniak W, Kneiske TM, Komin N, Kosack K, Kossakowski R, Laffont H, Lamanna G, Lemoine-Goumard M, Lenain JP, Lennarz D, Lohse T, Lopatin A, Lu CC, Marandon V, Marcowith A, Masbou J, Maurin D, Maxted N, Mccomb TJL, Medina MC, Mehault J, Moderski R, Moulin E, Naumann-Godo M, De Naurois M, Nedbal D, Nekrassov D, Nguyen N, Nicholas B, Niemiec J, Nolan SJ, Ohm S, Olive JF, De Ona Wilhelmi E, Opitz B, Ostrowski M, Panter M, Arribas MP, Pedaletti G, Pelletier G, Petrucci PO, Pita S, Pühlhofer G, Punch M, Quirrenbach A, Raue M, Rayner SM, Reimer A, Reimer O, Renaud M, De Los Reyes R, Rieger F, Ripken J, Rob L, Rosier-Lees S, Rowell G, Rudak B, Rulten CB, Ruppel J, Ryde F, Sahakian V, Santangelo A, Schlickeiser R, Schoeck FM, Schoenwald A, Schwanke U, Schwarzburg S, Schwemmer S, Shalchi A, Sushch I, Sikora M, Skilton JL, Sol H, Spengler G, Stawarz L, Steenkamp R, Stegmann C, Stinzing F, Szostek A, Tam PH, Tavernet JP, Terrier R, Tibolla O, Tluczykont M, Valerius K, van Eldik C, Vasileiadis G, Venter C, Vialle JP, Viana A, Vincent P, Vivier M, Voelk HJ, Volpe F, Vorobiov S, Wagner SJ, Ward M, Wierzcholska A, Zajczyk A, Zdziarski AA, Zech A, Zechlin HS, Dubner G, Giacani E (2011)

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2011

Journal

Publisher: EDP Sciences

Book Volume: 528

Article Number: A143

DOI: 10.1051/0004-6361/201015381

Abstract

The γ-ray pulsar PSR B1706-44 and the adjacent supernova remnant (SNR) candidate G343.1-2.3 were observed by H.E.S.S. during a dedicated observation campaign in 2007. As a result of this observation campaign, a new source of very-high-energy (VHE; E > 100 GeV) γ-ray emission, H.E.S.S.J1708-443, was detected with a statistical significance of 7σ, although no significant point-like emission was detected at the position of the energetic pulsar itself. In this paper, the morphological and spectral analyses of the newly-discovered TeV source are presented. The centroid of H.E.S.S.J1708-443 is considerably offset from the pulsar and located near the apparent center of the SNR, at α = 1708 11 ± 17 and δ = -44°20′ ± 4′. The source is found to be significantly more extended than the H.E.S.S. point spread function (∼0.1°), with an intrinsic Gaussian width of 0.29° ± 0.04°. Its integral flux between 1 and 10 TeV is ~ 3.8 × 10 ph cm s , equivalent to 17% of the Crab Nebula flux in the same energy range. The measured energy spectrum is well-fit by a power law with a relatively hard photon index Γ = 2.0 ± 0.1 ± 0.2 . Additional multi-wavelength data, including 330 MHz VLA observations, were used to investigate the VHE γ-ray source's possible associations with the pulsar wind nebula of PSR B1706-44 and/or with the complex radio structure of the partial shell-type SNR G 343.1-2.3. © 2011 ESO.

Authors with CRIS profile

Involved external institutions

Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics Germany (DE) Commissariat à l'énergie atomique France (FR) University of Savoy Mont Blanc / Université Savoie Mont Blanc France (FR) University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot France (FR) Durham University United Kingdom (GB) Stockholm University / Stockholms universitet Sweden (SE) Noordwes-Universiteit / North-West University South Africa (ZA) University of Montpellier / Université Montpellier France (FR) University of Adelaide Australia (AU) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) / National Scientific and Technical Research Council Argentina (AR) École Polytechnique - Université Paris-Saclay France (FR) Universität Hamburg (UHH) Germany (DE) Nicolaus Copernicus Astronomical Centre of the Polish Academy of Sciences Poland (PL) Université Joseph Fourier (UJF Grenoble 1) France (FR) University of Leicester United Kingdom (GB) Ruprecht-Karls-Universität Heidelberg Germany (DE) Eberhard Karls Universität Tübingen Germany (DE) Jagiellonian University / Uniwersytet Jagielloński (UJ) Poland (PL) University of Warsaw / Uniwersytet Warszawski Poland (PL) Yerevan Physics Institute (YerPhI) / Երևանի Ֆիզիկայի Ինստիտուտ Armenia (AM) Ruhr-Universität Bochum (RUB) Germany (DE) Université Bordeaux 1, Sciences et Technologies France (FR) Leopold-Franzens-Universität Innsbruck / University of Innsbruck Austria (AT) University of Namibia (UNAM) Namibia (NA) Univerzita Karlova v Praze / Charles University in Prague Czech Republic (CZ) Dublin Institute for Advanced Studies (DIAS) Ireland (IE) Humboldt-Universität zu Berlin Germany (DE) University of Leeds United Kingdom (GB) Institute of Nuclear Physics Polish Academy of Sciences / Instytut Fizyki Jądrowej im. Henryka Niewodniczańskiego Polskiej Akademii Nauk Poland (PL) Université Toulouse III - Paul Sabatier France (FR) Nicolaus Copernicus University (NCU) / Uniwersytet Mikołaja Kopernika w Toruniu (UMK) Poland (PL) Royal Institute of Technology / Kungliga Tekniska Högskolan (KTH) Sweden (SE)

How to cite

APA:

Abramowski, A., Acero, F., Aharonian, F., Akhperjanian, A.G., Anton, G., Barnacka, A.,... Giacani, E. (2011). Detection of very-high-energy γ-ray emission from the vicinity of PSRB1706-44 and G343.1-2.3 with H.E.S.S. Astronomy & Astrophysics, 528. https://doi.org/10.1051/0004-6361/201015381

MLA:

Abramowski, A., et al. "Detection of very-high-energy γ-ray emission from the vicinity of PSRB1706-44 and G343.1-2.3 with H.E.S.S." Astronomy & Astrophysics 528 (2011).

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