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Long-term TeV and X-ray Observations of the Gamma-ray Binary HESS J0632+057

E. Aliu S. Archambault T. Aune B. Behera M. Beilicke W. Benbow K. Berger R. Bird A. Bouvier J. H. Buckley V. Bugaev K. Byrum M. Cerruti 1 X. Chen L. Ciupik M. P. Connolly W. Cui C. Duke J. Dumm M. Errando A. Falcone S. Federici Q. Feng J. P. Finley P. Fortin 2 L. Fortson A. Furniss N. Galante G. H. Gillanders S. Griffin S. T. Griffiths J. Grube G. Gyuk D. Hanna J. Holder G. Hughes T. B. Humensky P. Kaaret M. Kertzman Y. Khassen D. Kieda H. Krawczynski F. Krennrich M. J. Lang A. S Madhavan G. Maier P. Majumdar A. Mccann P. Moriarty R. Mukherjee D. Nieto A. O'Faoláin de Bhróithe R. A. Ong A. N. Otte N. Park J. S. Perkins M. Pohl A. Popkow H. Prokoph J. Quinn K. Ragan J. Rajotte L. C. Reyes P. T. Reynolds G. T. Richards E. Roache J. Rousselle G. H. Sembroski F. Sheidaei C. Skole A. W. Smith D. Staszak M. Stroh I. Telezhinsky M. Theiling J. V. Tucci J. Tyler A. Varlotta Serge Vincent S. P. Wakely A. Weinstein R. Welsing D. A. Williams A. Zajczyk B. Zitzer A. Abramowski F. Aharonian F. Ait Benkhali A. G. Akhperjanian E. Angüner G. Anton S. Balenderan Agnès Balzer A. Barnacka Y. Becherini J. Becker Tjus K. Bernlöhr E. Birsin E. Bissaldi J. Biteau 2 M. Böttcher C. Boisson 1 J. Bolmont 3 P. Bordas J. Brucker F. Brun P. Brun 4 T. Bulik S. Carrigan S. Casanova P. M. Chadwick R. Chalme-Calvet 3 R. C. G. Chaves A. Cheesebrough M. Chrétien 3 S. Colafrancesco G. Cologna J. Conrad C. Couturier 3 M. Dalton 5 M. K. Daniel I. D. Davids B. Degrange 2 C. Deil P. Dewilt H. J. Dickinson A. Djannati-Ataï 6, 7 W. Domainko L. O'C. Drury G. Dubus K. Dutson J. Dyks M. Dyrda T. Edwards K. Egberts P. Eger P. Espigat 7 C. Farnier S. Fegan 2 F. Feinstein 8 M. V. Fernandes D. Fernandez 8 A. Fiasson 9 G. Fontaine 2 A. Forster M. Füßling M. Gajdus Y. A. Gallant 8 T. Garrigoux 3 G. Giavitto B. Giebels 2 J. F. Glicenstein M. -H. Grondin M. Grudzińska S. Häffner J. Hahn J. Harris G. Heinzelmann G. Henri G. Hermann O. Hervet 1 A. Hillert J. A. Hinton W. Hofmann P. Hofverberg M. Holler D. Horns A. Jacholkowska 3 C. Jahn M. Jamrozy M. Janiak F. Jankowsky I. Jung M. A. Kastendieck K. Katarzyński U. Katz S. Kaufmann B. Khélifi Michel Kieffer 3 S. Klepser D. Klochkov W. Kluźniak T. Kneiske D. Kolitzus Nu. Komin 9 K. Kosack S. Krakau F. Krayzel 9 P. P. Krüger H. Laffon 5 G. Lamanna 9 J. Lefaucheur 7 A. Lemiére 7 M. Lemoine-Goumard 5 J. -P. Lenain D. Lennarz T. Lohse A. Lopatin C. -C. Lu V. Marandon A. Marcowith 8 R. Marx G. Maurin 9 N. Maxted M. Mayer T. J. L. Mccomb J. Méhault 5 U. Menzler M. Meyer R. Moderski M. Mohamed Emmanuel Moulin T. Murach C. L. Naumann 3 M. de Naurois 2 J. Niemiec S. J. Nolan L. Oakes S. Ohm E. de Onña Wilhelmi B. Opitz M. Ostrowski I. Oya M. Panter R. D. Parsons M. Paz Arribas N. W. Pekeur G. Pelletier J. Perez P. -O. Petrucci B. Peyaud S. Pita 7 H. Poon 8 G. Pühlhofer M. Punch 7 A. Quirrenbach S. Raab M. Raue A. Reimer O. Reimer M. Renaud 8 R. de Los Reyes F. Rieger L. Rob C. Romoli S. Rosier-Lees 9 G. Rowell B. Rudak C. B. Rulten 1 V. Sahakian D. A. Sanchez 9 A. Santangelo R. Schlickeiser F. Schüssler A. Schulz U. Schwanke S. Schwarzburg S. Schwemmer H. Sol 1 G. Spengler F. Spies Ł. Stawarz R. Steenkamp C. Stegmann F. Stinzing K. Stycz I. Sushch A. Szostek J. -P. Tavernet 3 T. Tavernier 7 A. M. Taylor R. Terrier 7 M. Tluczykont C. Trichard 9 K. Valerius C. van Eldik G. Vasileiadis 8 C. Venter A. Viana P. Vincent 3 H. J. Völk F. Volpe M. Vorster S. J. Wagner P. Wagner M. Ward M. Weidinger Q. Weitzel R. White A. Wierzcholska P. Willmann A. Wörnlein D. Wouters M. Zacharias A. A. Zdziarski A. Zech 1 H. -S. Zechlin
1 LUTH (UMR_8102) - Laboratoire Univers et Théories
2 LLR - Laboratoire Leprince-Ringuet
3 LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies
4 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
5 ASTRO - Astroparticules
CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan
6 APC - AHE - APC - Astrophysique des Hautes Energies
APC (UMR_7164) - AstroParticule et Cosmologie, Dipartimento di Astronomia, Universita degli Studi di Bologna
7 APC (UMR_7164) - AstroParticule et Cosmologie
8 LUPM - Laboratoire Univers et Particules de Montpellier
9 LAPP - Laboratoire d'Annecy de Physique des Particules
Abstract : HESS J0632+057 is the only gamma-ray binary known so far whose position in the sky allows observations with ground-based observatories both in the northern and southern hemispheres. Here we report on long-term observations of HESS J0632+057 conducted with the VERITAS and H.E.S.S. Cherenkov Telescopes and the X-ray Satellite Swift, spanning a time range from 2004 to 2012 and covering most of the system's orbit. The VHE emission is found to be variable, and is correlated with that at X-ray energies. An orbital period of $315 ^{+6}_{-4}$ days is derived from the X-ray data set, which is compatible with previous results, $P = (321 \pm 5$) days. The VHE light curve shows a distinct maximum at orbital phases close to 0.3, or about 100 days after periastron passage, which coincides with the periodic enhancement of the X-ray emission. Furthermore, the analysis of the TeV data shows for the first time a statistically significant ($> 6.5 \sigma$) detection at orbital phases 0.6--0.9. The obtained gamma-ray and X-ray light curves and the correlation of the source emission at these two energy bands are discussed in the context of the recent ephemeris obtained for the system. Our results are compared to those reported for other gamma-ray binaries.
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Journal articles
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Contributor : Claudine Bombar <>
Submitted on : Friday, February 21, 2014 - 3:06:29 PM
Last modification on : Friday, November 27, 2020 - 5:52:10 AM

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IN2P3 | OBSPM | UNIV-PARIS7 | UNIV-SAVOIE | CENBG | LAPP | LLR | UPMC | LPNHE | APC | CNRS | X-LLR | X | LUPM | CEA | DSM-IRFU | IRFU-APC | USPC | MIPS | UNIV-MONTPELLIER | CEA-DRF | X-DEP-PHYS | SORBONNE-UNIVERSITE | LUPM_EMA | SU-SCIENCES | UNIV-PARIS | UP-SCIENCES | LUTH | INSU | PSL | UGA

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E. Aliu, S. Archambault, T. Aune, B. Behera, M. Beilicke, et al.. Long-term TeV and X-ray Observations of the Gamma-ray Binary HESS J0632+057. The Astrophysical Journal, American Astronomical Society, 2014, 780 (2), pp.168. ⟨10.1088/0004-637X/780/2/168⟩. ⟨in2p3-00950495⟩

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