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          Institute: MPI für Kernphysik     Collection: High-Energy Astrophysics     Display Documents



  history
ID: 464866.0, MPI für Kernphysik / High-Energy Astrophysics
HESS upper limits on very high energy gamma-ray emission from the microquasar GRS 1915+105
Authors:Acero, F.; Aharonian, F.; Akhperjanian, A. G.; Anton, G.; de Almeida, U. B.; Bazer-Bachi, A. R.; Becherini, Y.; Behera, B.; Bernlöhr, K.; Bochow, A.; Boisson, C.; Bolmont, J.; Borrel, V.; Brucker, J.; Brun, F.; Brun, P.; Bühler, R.; Bulik, T.; Busching, I.; Boutelier, T.; Chadwick, P. M.; Charbonnier, A.; Chaves, R. C. G.; Cheesebrough, A.; Chounet, L. M.; Clapson, A. C.; Coignet, G.; Dalton, M.; Daniel, M. K.; Davids, I. D.; Degrange, B.; Deil, C.; Dickinson, H. J.; Djannati-Atai, A.; Domainko, W.; Drury, L. O.; Dubois, F.; Dubus, G.; Dyks, J.; Dyrda, M.; Egberts, K.; Emmanoulopoulos, D.; Espigat, P.; Farnier, C.; Fegan, S.; Feinstein, F.; Fiasson, A.; Foerster, A.; Fontaine, G.; Fussling, M.; Gabici, S.; Gallant, Y. A.; Gerard, L.; Gerbig, D.; Giebels, B.; Glicenstein, J. F.; Gluck, B.; Goret, P.; Goring, D.; Hauser, D.; Hauser, M.; Heinz, S.; Heinzelmann, G.; Henri, G.; Hermann, G.; Hinton, J. A.; Hoffmann, A.; Hofmann, W.; Hofverberg, P.; Hoppe, S.; Horns, D.; Jacholkowska, A.; de Jager, O. C.; Jahn, C.; Jung, I.; Katarzynski, K.; Katz, U.; Kaufmann, S.; Kerschhaggl, M.; Khangulyan, D.; Khelifi, B.; Keogh, D.; Klochkov, D.; Kluzniak, W.; Kneiske, T.; Komin, N.; Kosack, K.; Kossakowski, R.; Lamanna, G.; Lenain, J. P.; Lohse, T.; Marandon, V.; Martineau-Huynh, O.; Marcowith, A.; Masbou, J.; Maurin, D.; McComb, T. J. L.; Medina, M. C.; Mehault, J.; Moderski, R.; Moulin, E.; Naumann-Godo, M.; de Naurois, M.; Nedbal, D.; Nekrassov, D.; Nicholas, B.; Niemiec, J.; Nolan, S. J.; Ohm, S.; Olive, J. F.; Wilhelmi, E. D.; Orford, K. J.; Ostrowski, M.; Panter, M.; Arribas, M. P.; Pedaletti, G.; Pelletier, G.; Petrucci, P. O.; Pita, S.; Puhlhofer, G.; Punch, M.; Quirrenbach, A.; Raubenheimer, B. C.; Raue, M.; Rayner, S. M.; Reimer, O.; Renaud, M.; Rieger, F.; Ripken, J.; Rob, L.; Rosier-Lees, S.; Rowell, G.; Rudak, B.; Rulten, C. B.; Ruppel, J.; Sahakian, V.; Santangelo, A.; Schlickeiser, R.; Schock, F. M.; Schwanke, U.; Schwarzburg, S.; Schwemmer, S.; Shalchi, A.; Sikora, M.; Skilton, J. L.; Sol, H.; Stawarz, L.; Steenkamp, R.; Stegmann, C.; Stinzing, F.; Superina, G.; Szostek, A.; Tam, P. H.; Tavernet, J. P.; Terrier, R.; Tibolla, O.; Tluczykont, M.; van Eldik, C.; Vasileiadis, G.; Venter, C.; Venter, L.; Vialle, J. P.; Vincent, P.; Vivier, M.; Völk, H. J.; Volpe, F.; Wagner, S. J.; Ward, M.; Zdziarski, A. A.; Zech, A.
Language:English
Date of Publication (YYYY-MM-DD):2009-12
Title of Journal:Astronomy and Astrophysics
Journal Abbrev.:A&A
Volume:508
Issue / Number:3
Start Page:1135
End Page:1140
Review Status:not specified
Audience:Experts Only
Abstract / Description: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× 10-13 ph cm-2 s-1 (99.9% confidence level) is set on the photon flux above 410 GeV, equivalent to a VHE luminosity of ˜ 1034 erg s-1 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 1038 erg s-1. 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.
Free Keywords:X-rays: binaries, X-rays: individuals: GRS 1915+105, gamma rays: observations
External Publication Status:published
Document Type:Article
Affiliations:MPI für Kernphysik/Group of W. Hofmann/Experimental High-Energy Astrophysics (M. Panter, G. Hermann)
MPI für Kernphysik/Group of W. Hofmann/High Energy Astrophysics (F. Aharonian)
External Affiliations:[Nedbal, D.; Rob, L.] Charles Univ Prague, Fac Math & Phys, Inst Particle & Nucl Phys, CR-18000 Prague, Czech Republic.; [Acero, F.; Farnier, C.; Feinstein, F.; Gallant, Y. A.; Marcowith, A.; Mehault, J.; Vasileiadis, G.] Univ Montpellier 2, CNRS, IN2P3, Lab Phys Theor & Astroparticules, F-34095 Montpellier 5, France.; [Akhperjanian, A. G.; Sahakian, V.] Yerevan Phys Inst, Yerevan 375036, Armenia.; [Bazer-Bachi, A. R.; Borrel, V.; Olive, J-F.] UPS, CNRS, Ctr Etud Spatiale Rayonnements, F-31029 Toulouse 4, France.; [Heinzelmann, G.; Horns, D.; Kneiske, T.; Ripken, J.; Tluczykont, M.] Univ Hamburg, Inst Expt Phys, D-22761 Hamburg, Germany.; [Bernloehr, K.; Dalton, M.; Fuessling, M.; Kerschhaggl, M.; Lohse, T.; Arribas, M. Paz; Schwanke, U.] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany.; [Boisson, C.; Lenain, J. -P.; Medina, M. C.; Moulin, E.; Sol, H.; Venter, L.; Zech, A.] Univ Paris Diderot, CNRS, Observ Paris, Lab Univers & Theories, F-92190 Meudon, France.; [Brun, P.; Glicenstein, J. F.; Goret, P.; Komin, Nu.; Vivier, M.] CEA, CE Saclay, Inst Rech Lois Fondament Univers, La Direct Sci Mat, F-91191 Gif Sur Yvette, France.; [de Almeida, U. Barres; Chadwick, P. M.; Cheesebrough, A.; Daniel, M. K.; Dickinson, H. J.; Keogh, D.; McComb, T. J. L.; Nolan, S. J.; Orford, K. J.; Rayner, S. M.; Rulten, C. B.; Ward, M.] Univ Durham, Dept Phys, Durham DH1 3LE, England.; [Buesching, I.; Davids, I. D.; de Jager, O. C.; Raubenheimer, B. C.; Venter, C.] North West Univ, Unit Space Phys, ZA-2520 Potchefstroom, South Africa.; [Chounet, L. -M.; Degrange, B.; Fegan, S.; Fontaine, G.; Giebels, B.; Khelifi, B.; Naumann-Godo, M.; Superina, G.] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France.; [Coignet, G.; Dubois, F.; Fiasson, A.; Kossakowski, R.; Lamanna, G.; Masbou, J.; Rosier-Lees, S.; Vialle, J. P.] Univ Savoie, CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France.; [Becherini, Y.; Djannati-Atai, A.; Espigat, P.; Gerard, L.; Marandon, V.; Pita, S.; Punch, M.; Renaud, M.; Terrier, R.] Univ Paris 07, CNRS, UMR 7164, CEA,Observ Paris, F-75205 Paris 13, France.; [Aharonian, F.; Drury, L. O'C.; Gabici, S.] Dublin Inst Adv Studies, Dublin 2, Ireland.; [Behera, B.; Emmanoulopoulos, D.; Hauser, D.; Hauser, M.; Kaufmann, S.; Pedaletti, G.; Puehlhofer, G.; Quirrenbach, A.; Schwemmer, S.; Tam, P. H.; Wagner, S. J.] Univ Heidelberg, D-69117 Heidelberg, Germany.; [Anton, G.; Brucker, J.; Glueck, B.; Goering, D.; Heinz, S.; Jahn, C.; Jung, I.; Katz, U.; Schoeck, F. M.; Stegmann, C.; Stinzing, F.] Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany.; [Boutelier, T.; Dubus, G.; Henri, G.; Pelletier, G.; Petrucci, P. -O.; Szostek, A.] Univ Grenoble 1, CNRS, Astrophys Lab, Inst Natl Sci Univers, F-38041 Grenoble 9, France.; [Hoffmann, A.; Klochkov, D.; Puehlhofer, G.; Santangelo, A.; Schwarzburg, S.] Univ Tubingen, Inst Astron & Astrophys, D-72076 Tubingen, Germany.; [Bolmont, J.; Brun, F.; Charbonnier, A.; Jacholkowska, A.; Martineau-Huynh, O.; Maurin, D.; de Naurois, M.; Tavernet, J. -P.; Vincent, P.] Univ Paris 07, CNRS, Univ Paris 06, Lab Phys Nucl & Hautes Energies,IN2P3, F-75252 Paris 5, France.; [Gerbig, D.; Ruppel, J.; Schlickeiser, R.; Shalchi, A.] Ruhr Univ Bochum, Inst Theoret Phys, Lehrstuhl Weltraum & Astrophys 4, D-44780 Bochum, Germany.; [Davids, I. D.; Steenkamp, R.] Univ Namibia, Windhoek, Namibia.; [Ostrowski, M.; Stawarz, L.; Szostek, A.] Uniwersytet Jagiellonski, Obserwatorium Astron, PL-30244 Krakow, Poland.; [Dyks, J.; Kluzniak, W.; Moderski, R.; Rudak, B.; Sikora, M.; Zdziarski, A. A.] Nicolaus Copernicus Astron Ctr, PL-00716 Warsaw, Poland.; [Hinton, J. A.; Skilton, J. L.] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England.; [Nicholas, B.; Rowell, G.] Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia.; [Katarzynski, K.] Nicholas Copernicus Univ, Torun Ctr Astron, PL-87100 Torun, Poland.; [Dyrda, M.; Niemiec, J.] Inst Fizyki Jadrowej PAN, PL-31342 Krakow, Poland.; [Bulik, T.] Univ Warsaw, Astron Observ, PL-00478 Warsaw, Poland.; [Raue, M.; Rieger, F.] European Associated Lab Gamma Ray Astron, F-75252 Paris 5, France.; [Reimer, O.] Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria.; [Reimer, O.] Stanford Univ, KIPAC Kavli Inst Particle Phys & Cosmol, Stanford, CA 94305 USA.
Identifiers:DOI:http://dx.doi.org/10.1051/0004-6361/200913389
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