Hess upper limits on very high energy gamma-ray emission from the microquasar grs 1915+105

Acero F, Aharonian F, Akhperjanian AG, Anton G, De Almeida UB, Bazer-Bachi AR, Becherini Y, Behera B, Bernloehr K, Bochow A, Boisson C, Bolmont J, Borrel V, Brucker J, Brun F, Brun P, Bulik T, Buesching I, Boutelier T, 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, Fiasson A, Foerster A, Fontaine G, Fuessling M, Gabici S, Gallant YA, Gerard L, Gerbig D, Giebels B, Glicenstein JF, Glueck B, Goret P, Göring 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, Jung I, Katarzynski K, Katz U, Kaufmann S, Kerschhaggl M, Khangulyan D, Khelifi B, Keogh D, Klochkov D, Kluzniak W, Kneiske TM, Komin N, Kosack K, Kossakowski R, Lamanna G, Lenain JP, Lohse T, Marandon V, Marcowith A, Masbou J, Maurin D, Mccomb TJL, Medina MC, Mehault J, Moderski R, Moulin E, Naumann-Godo M, De Naurois M, Nedbal D, Nekrassov D, Nicholas B, Niemiec J, Nolan SJ, Ohm S, Olive JF, Wilhelmi EDO, Orford KJ, Ostrowski M, Panter M, Arribas MP, Pedaletti G, Pelletier G, Petrucci PO, Pita S, Puehlhofer G, Punch M, Quirrenbach A, Raubenheimer BC, Raue M, Rayner SM, 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, Stawarz L, Steenkamp R, Stegmann C, Stinzing F, Superina G, Szostek A, Tam PH, Tavernet JP, Terrier R, Tibolla O, Tluczykont M, van Eldik C, Vasileiadis G, Venter C, Venter L, Vialle JP, Vincent P, Vivier M, Voelk HJ, Volpe F, Vorobiov S, Wagner SJ, Ward M, Zdziarski AA, Zech A (2009)

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2009

Journal

Publisher: EDP Sciences

Book Volume: 508

Pages Range: 1135-1140

Journal Issue: 3

DOI: 10.1051/0004-6361/200913389

Abstract

Context: High energy particles reside in the relativistic jets of microquasars, making them possible sources of very high energy radiation (VHE, < 100 GeV). Detecting this emission would provide a new handle on jet physics. Aims: Observations of the microquasar GRS 1915+105 with the HESS telescope array were undertaken in 2004-2008 to search for VHE emission. Methods: Stereoscopic imaging of Cherenkov radiation from extensive air showers is used to reconstruct the energy and direction of the incident gamma rays. Results: There is no evidence for a VHE gamma-ray signal either from the direction of the microquasar or its vicinity. An upper limit of 6.1 × 10ph cms (99.9% confidence level) is set on the photon flux above 410 GeV, equivalent to a VHE luminosity of ̃ 10erg s at 11 kpc. Conclusions. The VHE to X-ray luminosity ratio in GRS 1915+105 is at least four orders of magnitude lower than the ratio observed in gamma-ray binaries. The VHE radiative efficiency of the compact jet is less than 0.01% based on its estimated total power of 10 erg s. Particle acceleration in GRS 1915+105 is not efficient at high energies and/or the magnetic field is too strong. It is also possible that VHE gamma-rays are produced by GRS 1915+105, but the emission is highly time-dependent. © 2009 ESO.

Authors with CRIS profile

Involved external institutions

Nicolaus Copernicus Astronomical Centre of the Polish Academy of Sciences Poland (PL) Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics Germany (DE) University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot France (FR) Ruhr-Universität Bochum (RUB) Germany (DE) Centre CEA de Saclay (Essonne) France (FR) École Polytechnique - Université Paris-Saclay France (FR) Stockholm University / Stockholms universitet Sweden (SE) Leopold-Franzens-Universität Innsbruck / University of Innsbruck Austria (AT) Durham University United Kingdom (GB) Dublin Institute for Advanced Studies (DIAS) Ireland (IE) Université Joseph Fourier (UJF Grenoble 1) France (FR) Humboldt-Universität zu Berlin Germany (DE) Eberhard Karls Universität Tübingen Germany (DE) Ruprecht-Karls-Universität Heidelberg Germany (DE) Noordwes-Universiteit / North-West University South Africa (ZA) University of Adelaide Australia (AU) University of Savoy Mont Blanc / Université Savoie Mont Blanc France (FR) Institute of Nuclear Physics PAN / Instytut Fizyki Jądrowej im. Henryka Niewodniczańskiego PAN Poland (PL) University of Montpellier / Université Montpellier France (FR) Université Toulouse III - Paul Sabatier France (FR) University of Warsaw / Uniwersytet Warszawski Poland (PL) Yerevan Physics Institute (YerPhI) / Երևանի Ֆիզիկայի Ինստիտուտ Armenia (AM) University of Leeds United Kingdom (GB) Universität Hamburg (UHH) Germany (DE) Nicolaus Copernicus University (NCU) / Uniwersytet Mikołaja Kopernika w Toruniu (UMK) Poland (PL) Royal Institute of Technology / Kungliga Tekniska Högskolan (KTH) Sweden (SE) Jagiellonian University / Uniwersytet Jagielloński (UJ) Poland (PL) University of Namibia (UNAM) Namibia (NA)

How to cite

APA:

Acero, F., Aharonian, F., Akhperjanian, A.G., Anton, G., De Almeida, U.B., Bazer-Bachi, A.R.,... Zech, A. (2009). Hess upper limits on very high energy gamma-ray emission from the microquasar grs 1915+105. Astronomy & Astrophysics, 508(3), 1135-1140. https://doi.org/10.1051/0004-6361/200913389

MLA:

Acero, F., et al. "Hess upper limits on very high energy gamma-ray emission from the microquasar grs 1915+105." Astronomy & Astrophysics 508.3 (2009): 1135-1140.

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