Discovery and follow-up studies of the extended, off-plane, VHE gamma-ray source HESS J1507-622

Fabio Acero; F. Aharonian; A.G. Akhperjanian; G. Anton; U. Barres de Almeida; A.R. Bazer-Bachi; Y. Becherini; B. Behera; K. Bernlöhr; A. Bochow; C. Boisson; J. Bolmont; V. Borrel; J. Brucker; F. Brun; P. Brun; R. Bühler; T. Bulik; I. B¨usching; T. Boutelier; P.M. Chadwick; A. Charbonnier; R.C.G. Chaves; A. Cheesebrough; L.-M. Chounet; A.C. Clapson; G. Coignet; M. Dalton; M.K. Daniel; I.D. Davids; B. Degrange; C. Deil; H.J. Dickinson; A. Djannati-Ataï; W. Domainko; L.O'C. Drury; F. Dubois; G. Dubus; J. Dyks; M. Dyrda; K. Egberts; D. Emmanoulopoulos; P. Espigat; C. Farnier; F. Feinstein; A. Fiasson; A. F¨orster; G. Fontaine; M. Füßling; S. Gabici; Y.A. Gallant; L. Gérard; D. Gerbig; B. Giebels; J.F. Glicenstein; B. Glück; P. Goret; D. Göring; D. Hauser; M. Hauser; S. Heinz; G. Heinzelmann; G. Henri; G. Hermann; J.A. Hinton; A. Hoffmann; W. Hofmann; M. Holleran; S. Hoppe; D. Horns; A. Jacholkowska; O.C. de Jager; C. Jahn; I. Jung; K. Katarzy'Nski; U. Katz; S. Kaufmann; M. Kerschhaggl; D. Khangulyan; B. Khélifi; D. Keogh; D. Klochkov; W. Klu'Zniak; T. Kneiske; Nu. Komin; K. Kosack; R. Kossakowski; G. Lamanna; J.-P. Lenain; T. Lohse; V. Marandon; O. Martineau-Huynh; A. Marcowith; J. Masbou; D. Maurin; T.J.L. Mccomb; M.C. Medina; J. M'Ehault; R. Moderski; Emmanuel Moulin; M. Naumann-Godo; M. de Naurois; D. Nedbal; D. Nekrassov; B. Nicholas; J. Niemiec; S.J. Nolan; S. Ohm; J.-F. Olive; E. de Oña Wilhelmi; K.J. Orford; M. Ostrowski; M. Panter; M. Paz Arribas; G. Pedaletti; G. Pelletier; P.-O. Petrucci; S. Pita; G. Pühlhofer; M. Punch; A. Quirrenbach; B.C. Raubenheimer; M. Raue; S.M. Rayner; O. Reimer; M. Renaud; F. Rieger; J. Ripken; L. Rob; S. Rosier-Lees; G. Rowell; B. Rudak; C.B. Rulten; J. Ruppel; V. Sahakian; A. Santangelo; R. Schlickeiser; F.M. Schöck; U. Schwanke; S. Schwarzburg; S. Schwemmer; A. Shalchi; M. Sikora; J.L. Skilton; H. Sol; Ł. Stawarz; R. Steenkamp; C. Stegmann; F. Stinzing; G. Superina; A. Szostek; P.H. Tam; J.-P. Tavernet; R. Terrier; O. Tibolla; M. Tluczykont; C. van Eldik; G. Vasileiadis; C. Venter; L. Venter; J.P. Vialle; P. Vincent; M. Vivier; H.J. Völk; F. Volpe; S.J. Wagner; M. Ward; A.A. Zdziarski; A. Zech

doi:10.1051/0004-6361/201015187

Journal articles

Discovery and follow-up studies of the extended, off-plane, VHE gamma-ray source HESS J1507-622

Fabio Acero ¹ F. Aharonian A.G. Akhperjanian G. Anton U. Barres de Almeida ² A.R. Bazer-Bachi ³ Y. Becherini ⁴ B. Behera K. Bernlöhr ⁵ A. Bochow C. Boisson ⁵ J. Bolmont ⁶ V. Borrel ³ J. Brucker F. Brun ⁶ P. Brun R. Bühler T. Bulik I. B¨usching T. Boutelier ⁷ P.M. Chadwick A. Charbonnier ⁶ R.C.G. Chaves A. Cheesebrough L.-M. Chounet ⁸ A.C. Clapson G. Coignet ⁹ M. Dalton M.K. Daniel I.D. Davids B. Degrange ⁸ C. Deil H.J. Dickinson A. Djannati-Ataï ¹⁰ W. Domainko L.O'C. Drury F. Dubois ⁹ G. Dubus ⁷ J. Dyks M. Dyrda K. Egberts D. Emmanoulopoulos P. Espigat ⁴ C. Farnier ¹ F. Feinstein ¹ A. Fiasson ⁹ A. F¨orster G. Fontaine ⁸ M. Füßling S. Gabici ³ Y.A. Gallant ¹ L. Gérard ⁴ D. Gerbig B. Giebels ⁸ J.F. Glicenstein ² B. Glück P. Goret ² D. Göring D. Hauser M. Hauser S. Heinz G. Heinzelmann G. Henri ⁷ G. Hermann J.A. Hinton A. Hoffmann W. Hofmann M. Holleran S. Hoppe D. Horns A. Jacholkowska ⁶ O.C. de Jager C. Jahn I. Jung K. Katarzy'Nski U. Katz S. Kaufmann M. Kerschhaggl D. Khangulyan B. Khélifi ⁸ D. Keogh D. Klochkov W. Klu'Zniak T. Kneiske Nu. Komin ⁹ K. Kosack ² R. Kossakowski ⁹ G. Lamanna ⁹ J.-P. Lenain ⁵ T. Lohse ⁵ V. Marandon ⁴ O. Martineau-Huynh ⁶ A. Marcowith ¹ J. Masbou ⁹ D. Maurin T.J.L. Mccomb M.C. Medina ⁵ J. M'Ehault R. Moderski Emmanuel Moulin ² M. Naumann-Godo ⁸ M. de Naurois ⁶ D. Nedbal D. Nekrassov B. Nicholas J. Niemiec S.J. Nolan S. Ohm J.-F. Olive ³ E. de Oña Wilhelmi ⁴ K.J. Orford M. Ostrowski M. Panter M. Paz Arribas G. Pedaletti G. Pelletier ⁷ P.-O. Petrucci ⁷ S. Pita ⁴ G. Pühlhofer M. Punch ⁴ A. Quirrenbach B.C. Raubenheimer M. Raue S.M. Rayner O. Reimer M. Renaud ⁴ F. Rieger J. Ripken L. Rob ⁸ S. Rosier-Lees ⁹ G. Rowell B. Rudak C.B. Rulten J. Ruppel V. Sahakian A. Santangelo R. Schlickeiser F.M. Schöck U. Schwanke ⁵ S. Schwarzburg S. Schwemmer A. Shalchi M. Sikora J.L. Skilton H. Sol ⁵ Ł. Stawarz R. Steenkamp ¹ C. Stegmann ⁵ F. Stinzing G. Superina ⁸ A. Szostek ⁷ P.H. Tam J.-P. Tavernet ⁶ R. Terrier ⁴ O. Tibolla M. Tluczykont ^{3, 8} C. van Eldik G. Vasileiadis ¹ C. Venter L. Venter ⁵ J.P. Vialle ⁹ P. Vincent ⁶ M. Vivier ² H.J. Völk F. Volpe ⁸ S.J. Wagner M. Ward A.A. Zdziarski A. Zech ⁵

1 LPTA - Laboratoire de Physique Théorique et Astroparticules

2 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers

3 CESR - Centre d'étude spatiale des rayonnements

4 APC (UMR_7164) - AstroParticule et Cosmologie

5 LUTH (UMR_8102) - Laboratoire Univers et Théories

6 LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies

7 LAOG - Laboratoire d'Astrophysique de Grenoble

8 LLR - Laboratoire Leprince-Ringuet

9 LAPP - Laboratoire d'Annecy de Physique des Particules

10 APC - AHE - APC - Astrophysique des Hautes Energies

APC (UMR_7164) - AstroParticule et Cosmologie, Dipartimento di Astronomia, Universita degli Studi di Bologna

Abstract : Context: The detection of gamma-rays in the very-high-energy (VHE) range (100 GeV-100 TeV) offers the possibility of studying the parent population of ultrarelativistic particles found in astrophysical sources, so it is useful for understanding the underlying astrophysical processes in nonthermal sources. Aim: The discovery of the VHE gamma-ray source HESS J1507-622 is reported and possibilities regarding its nature are investigated. Methods: The H.E.S.S. array of imaging atmospheric Cherenkov telescopes (IACTs) has a high sensitivity compared with previous instruments (~1% of the Crab flux in 25 hours observation time for a 5 sigma point-source detection) and has a large field of view (~5 deg in diameter). HESS J1507-622 was discovered within the ongoing H.E.S.S. survey of the inner Galaxy, and the source was also studied by means of dedicated multiwavelength observations. Results: A Galactic gamma-ray source, HESS J1507-622, located ~3.5 deg from the Galactic plane was detected with a statistical significance > 9 sigma. Its energy spectrum is well fitted by a power law with spectral index \Gamma = 2.24 +/- 0.16_{stat} +/- 0.20_{sys} and a flux above 1 TeV of (1.5 +/- 0.4_{stat} +/- 0.3_{sys}) X 10^{-12} cm^{-2} s^{-1}. Possible interpretations (considering both hadronic and leptonic models) of the VHE gamma-ray emission are discussed in the absence of an obvious counterpart.

Keywords : Galaxy: general cosmic rays gamma rays: observations

Document type :

Journal articles

Domain :

Physics [physics] / Astrophysics [astro-ph] / High Energy Astrophysical Phenomena [astro-ph.HE]

Sciences of the Universe [physics] / Astrophysics [astro-ph] / High Energy Astrophysical Phenomena [astro-ph.HE]

Complete list of metadatas

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Contributor : Swarna Bassava <>
Submitted on : Tuesday, November 23, 2010 - 2:59:19 PM
Last modification on : Friday, September 25, 2020 - 11:16:03 AM

Discovery and follow-up studies of the extended, off-plane, VHE gamma-ray source HESS J1507-622

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Discovery and follow-up studies of the extended, off-plane, VHE gamma-ray source HESS J1507-622

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