Detection of VHE gamma-ray emission from the distant blazar 1ES 1101-232 with HESS and broadband characterisation

F. Aharonian; A. G. Akhperjanian; A. R. Bazer-Bachi; M. Beilicke; W. Benbow; D. Berge; K. Bernlöhr; C. Boisson; O. Bolz; V. Borrel; I. Braun; E. Brion; A. M. Brown; R. Bühler; I. Büsching; T. Boutelier; S. Carrigan; P. M. Chadwick; L. M. Chounet; G. Coignet; R. Cornils; L. Costamante; B. Degrange; H. J. Dickinson; A. Djannati-Ataï; L. O'C Drury; G. Dubus; K. Egberts; D. Emmanoulopoulos; P. Espigat; C. Farnier; F. Feinstein; E. Ferrero; A. Fiasson; G. Fontaine; Seb Funk; S. Funk; M. Füßling; Y. A. Gallant; B. Giebels; J. F. Glicenstein; B. Glück; P. Goret; C. Hadjichristidis; D. Häuser; M. Häuser; 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; E. Kendziorra; M. Kerschhaggl; B. Khélifi; Nu Komin; K. Kosack; G. Lamanna; I. J. Latham; R. Le Gallou; A. Lemière; M. Lemoine-Goumard; T. Lohse; J. M. Martin; O. Martineau-Huynh; A. Marcowith; C. Masterson; G. Maurin; T. J.L. McComb; E. Moulin; M. De Naurois; D. Nedbal; S. J. Nolan; A. Noutsos; J. P. Olive; K. J. Orford; J. L. Osborne; M. Panter; G. Pelletier; P. O. Petrucci; S. Pita; G. Pühlhofer; M. Punch; S. Ranchon; B. C. Raubenheimer; M. Raue; S. M. Rayner; J. Ripken; L. Rob; L. Rolland; S. Rosier-Lees; G. Rowell; V. Sahakian; A. Santangelo; L. Saugé; S. Schlenker; R. Schlickeiser; R. Schröder; U. Schwanke; S. Schwarzburg; S. Schwemmer; A. Shalchi; H. Sol; D. Spangler; F. Spanier; R. Steenkamp; C. Stegmann; G. Superina; P. H. Tam; J. P. Tavernet; R. Terrier; M. Tluczykont; C. Van Eldik; G. Vasileiadis; C. Venter; J. P. Vialle; P. Vincent; H. J. Völk; S. J. Wagner; M. Ward

doi:10.1051/0004-6361:20077057

Detection of VHE gamma-ray emission from the distant blazar 1ES 1101-232 with HESS and broadband characterisation

F. Aharonian
, A. G. Akhperjanian
, A. R. Bazer-Bachi
, M. Beilicke
, W. Benbow
, D. Berge
, K. Bernlöhr
, C. Boisson
, O. Bolz
, V. Borrel
, I. Braun
, E. Brion
, A. M. Brown
, R. Bühler
, I. Büsching
, T. Boutelier
, S. Carrigan
, P. M. Chadwick
, L. M. Chounet
, G. Coignet

R. Cornils, L. Costamante, B. Degrange, H. J. Dickinson, A. Djannati-Ataï, L. O'C Drury, G. Dubus, K. Egberts, D. Emmanoulopoulos, P. Espigat, C. Farnier, F. Feinstein, E. Ferrero, A. Fiasson, G. Fontaine, Seb Funk, S. Funk, M. Füßling, Y. A. Gallant, B. Giebels, J. F. Glicenstein, B. Glück, P. Goret, C. Hadjichristidis, D. Häuser, M. Häuser, 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, E. Kendziorra, M. Kerschhaggl, B. Khélifi, Nu Komin, K. Kosack, G. Lamanna, I. J. Latham, R. Le Gallou, A. Lemière, M. Lemoine-Goumard, T. Lohse, J. M. Martin, O. Martineau-Huynh, A. Marcowith, C. Masterson, G. Maurin, T. J.L. McComb, E. Moulin, M. De Naurois, D. Nedbal, S. J. Nolan, A. Noutsos, J. P. Olive, K. J. Orford, J. L. Osborne, M. Panter, G. Pelletier, P. O. Petrucci, S. Pita, G. Pühlhofer, M. Punch, S. Ranchon, B. C. Raubenheimer, M. Raue, S. M. Rayner, J. Ripken, L. Rob, L. Rolland, S. Rosier-Lees, G. Rowell, V. Sahakian, A. Santangelo, L. Saugé, S. Schlenker, R. Schlickeiser, R. Schröder, U. Schwanke, S. Schwarzburg, S. Schwemmer, A. Shalchi, H. Sol, D. Spangler, F. Spanier, R. Steenkamp, C. Stegmann, G. Superina, P. H. Tam, J. P. Tavernet, R. Terrier, M. Tluczykont, C. Van Eldik, G. Vasileiadis, C. Venter, J. P. Vialle, P. Vincent, H. J. Völk, S. J. Wagner, M. Ward

Max-Planck-Institut für Kernphysik
Yerevan Physics Institute
CNRS
Universität Hamburg
European Organization for Nuclear Research
Humboldt-Universität zu Berlin
Institut Pierre Simon Laplace, CNRS and CEA
Durham University
North-West University
Ip Paris
Université Paris-Sud
European Associated Laboratory for Gamma-Ray Astronomy
CNRS and MPG
Astroparticule and Cosmol APC
Dublin Institute for Advanced Studies
Landessternwarte Heidelberg
Laboratoire Univers et Particules de Montpellier
Friedrich-Alexander University (FAU) Erlangen-Nürnberg and Universitätsklinikum Erlangen
University of Leeds
University of Tübingen
Universités Paris VI and VII
Charles University
University of Adelaide
Ruhr-University Bochum
University of Namibia
c/o DESY

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

136 Citations (Scopus)

Résumé

Context. The blazar 1ES 1101-232 was observed with the High Energy Stereoscopic System (HESS) of Atmospheric Cherenkov Telescopes (ACT) in 2004 and 2005, for a live time of 43 h. VHE (E > 10¹¹ eV) γ-rays were detected for the first time from this object. Aims. VHE observations of blazars are used to investigate the inner parts of the blazar jets, and also to study the extragalactic background light (EBL) in the near-infrared band. Methods. Observations in 2005 were conducted in a multiwavelength campaign, together with the RXTE satellite and optical observations. In 2004, simultaneous observations with XMM-Newton were obtained. Results. 1ES 1101-232 was detected with HESS with an excess of 649 photons, at a significance of 10σ. The measured VHE γ-ray flux amounts to dN/dE = (5.63 ± 0.89) × 10^-13(E/TeV)^-(2.94±020) cm^-2 s ^-1 TeV^-1, above a spectral energy threshold of 225 GeV. No significant variation of the VHE γ-ray flux on any time scale was found. 1ES 1101-232 exhibits a very hard spectrum, and at a redshift of z = 0.186, is the blazar with the highest confirmed redshift detected in VHE γ-rays so far. Conclusions. The data allow the construction of truly simultaneous spectral energy distributions of the source, from the optical to the VHE band. Using an EBL model with vF_v = 14 nWm^-2 sr^-1 at 1.5 μm as presented in Aharonian et al. (2006a) suggests an intrinsic VHE power output peak of the source at above 3 TeV.

langue originale	Anglais
Pages (de - à)	475-489
Nombre de pages	15
journal	Astronomy and Astrophysics
Volume	470
Numéro de publication	2
Les DOIs	https://doi.org/10.1051/0004-6361:20077057
état	Publié - 1 août 2007
Modification externe	Oui

Accès au document

10.1051/0004-6361:20077057

Contient cette citation

Aharonian, F., Akhperjanian, A. G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., Berge, D., Bernlöhr, K., Boisson, C., Bolz, O., Borrel, V., Braun, I., Brion, E., Brown, A. M., Bühler, R., Büsching, I., Boutelier, T., Carrigan, S., Chadwick, P. M., Chounet, L. M., ... Ward, M. (2007). Detection of VHE gamma-ray emission from the distant blazar 1ES 1101-232 with HESS and broadband characterisation. Astronomy and Astrophysics, 470(2), 475-489. https://doi.org/10.1051/0004-6361:20077057

@article{a62584b7bf2a4fd1aee20b2895997984,

title = "Detection of VHE gamma-ray emission from the distant blazar 1ES 1101-232 with HESS and broadband characterisation",

abstract = "Context. The blazar 1ES 1101-232 was observed with the High Energy Stereoscopic System (HESS) of Atmospheric Cherenkov Telescopes (ACT) in 2004 and 2005, for a live time of 43 h. VHE (E > 1011 eV) γ-rays were detected for the first time from this object. Aims. VHE observations of blazars are used to investigate the inner parts of the blazar jets, and also to study the extragalactic background light (EBL) in the near-infrared band. Methods. Observations in 2005 were conducted in a multiwavelength campaign, together with the RXTE satellite and optical observations. In 2004, simultaneous observations with XMM-Newton were obtained. Results. 1ES 1101-232 was detected with HESS with an excess of 649 photons, at a significance of 10σ. The measured VHE γ-ray flux amounts to dN/dE = (5.63 ± 0.89) {\texttimes} 10-13(E/TeV)-(2.94±020) cm-2 s -1 TeV-1, above a spectral energy threshold of 225 GeV. No significant variation of the VHE γ-ray flux on any time scale was found. 1ES 1101-232 exhibits a very hard spectrum, and at a redshift of z = 0.186, is the blazar with the highest confirmed redshift detected in VHE γ-rays so far. Conclusions. The data allow the construction of truly simultaneous spectral energy distributions of the source, from the optical to the VHE band. Using an EBL model with vFv = 14 nWm-2 sr-1 at 1.5 μm as presented in Aharonian et al. (2006a) suggests an intrinsic VHE power output peak of the source at above 3 TeV.",

keywords = "- Galaxies: active, BL lacertae objects: individual: 1ES 1101-232, Gamma rays: observations",

author = "F. Aharonian and Akhperjanian, \{A. G.\} and Bazer-Bachi, \{A. R.\} and M. Beilicke and W. Benbow and D. Berge and K. Bernl{\"o}hr and C. Boisson and O. Bolz and V. Borrel and I. Braun and E. Brion and Brown, \{A. M.\} and R. B{\"u}hler and I. B{\"u}sching and T. Boutelier and S. Carrigan and Chadwick, \{P. M.\} and Chounet, \{L. M.\} and G. Coignet and R. Cornils and L. Costamante and B. Degrange and Dickinson, \{H. J.\} and A. Djannati-Ata{\"i} and \{O'C Drury\}, L. and G. Dubus and K. Egberts and D. Emmanoulopoulos and P. Espigat and C. Farnier and F. Feinstein and E. Ferrero and A. Fiasson and G. Fontaine and Seb Funk and S. Funk and M. F{\"u}{\ss}ling and Gallant, \{Y. A.\} and B. Giebels and Glicenstein, \{J. F.\} and B. Gl{\"u}ck and P. Goret and C. Hadjichristidis and D. H{\"a}user and M. H{\"a}user and G. Heinzelmann and G. Henri and G. Hermann and Hinton, \{J. A.\} and A. Hoffmann and W. Hofmann and M. Holleran and S. Hoppe and D. Horns and A. Jacholkowska and \{De Jager\}, \{O. C.\} and E. Kendziorra and M. Kerschhaggl and B. Kh{\'e}lifi and Nu Komin and K. Kosack and G. Lamanna and Latham, \{I. J.\} and \{Le Gallou\}, R. and A. Lemi{\`e}re and M. Lemoine-Goumard and T. Lohse and Martin, \{J. M.\} and O. Martineau-Huynh and A. Marcowith and C. Masterson and G. Maurin and McComb, \{T. J.L.\} and E. Moulin and \{De Naurois\}, M. and D. Nedbal and Nolan, \{S. J.\} and A. Noutsos and Olive, \{J. P.\} and Orford, \{K. J.\} and Osborne, \{J. L.\} and M. Panter and G. Pelletier and Petrucci, \{P. O.\} and S. Pita and G. P{\"u}hlhofer and M. Punch and S. Ranchon and Raubenheimer, \{B. C.\} and M. Raue and Rayner, \{S. M.\} and J. Ripken and L. Rob and L. Rolland and S. Rosier-Lees and G. Rowell and V. Sahakian and A. Santangelo and L. Saug{\'e} and S. Schlenker and R. Schlickeiser and R. Schr{\"o}der and U. Schwanke and S. Schwarzburg and S. Schwemmer and A. Shalchi and H. Sol and D. Spangler and F. Spanier and R. Steenkamp and C. Stegmann and G. Superina and Tam, \{P. H.\} and Tavernet, \{J. P.\} and R. Terrier and M. Tluczykont and \{Van Eldik\}, C. and G. Vasileiadis and C. Venter and Vialle, \{J. P.\} and P. Vincent and V{\"o}lk, \{H. J.\} and Wagner, \{S. J.\} and M. Ward",

year = "2007",

month = aug,

day = "1",

doi = "10.1051/0004-6361:20077057",

language = "English",

volume = "470",

pages = "475--489",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

number = "2",

}

Aharonian, F, Akhperjanian, AG, Bazer-Bachi, AR, Beilicke, M, Benbow, W, Berge, D, Bernlöhr, K, Boisson, C, Bolz, O, Borrel, V, Braun, I, Brion, E, Brown, AM, Bühler, R, Büsching, I, Boutelier, T, Carrigan, S, Chadwick, PM, Chounet, LM, Coignet, G, Cornils, R, Costamante, L, Degrange, B, Dickinson, HJ, Djannati-Ataï, A, O'C Drury, L, Dubus, G, Egberts, K, Emmanoulopoulos, D, Espigat, P, Farnier, C, Feinstein, F, Ferrero, E, Fiasson, A, Fontaine, G, Funk, S, Funk, S, Füßling, M, Gallant, YA, Giebels, B, Glicenstein, JF, Glück, B, Goret, P, Hadjichristidis, C, Häuser, D, Häuser, M, Heinzelmann, G, Henri, G, Hermann, G, Hinton, JA, Hoffmann, A, Hofmann, W, Holleran, M, Hoppe, S, Horns, D, Jacholkowska, A, De Jager, OC, Kendziorra, E, Kerschhaggl, M, Khélifi, B, Komin, N, Kosack, K, Lamanna, G, Latham, IJ, Le Gallou, R, Lemière, A, Lemoine-Goumard, M, Lohse, T, Martin, JM, Martineau-Huynh, O, Marcowith, A, Masterson, C, Maurin, G, McComb, TJL, Moulin, E, De Naurois, M, Nedbal, D, Nolan, SJ, Noutsos, A, Olive, JP, Orford, KJ, Osborne, JL, Panter, M, Pelletier, G, Petrucci, PO, Pita, S, Pühlhofer, G, Punch, M, Ranchon, S, Raubenheimer, BC, Raue, M, Rayner, SM, Ripken, J, Rob, L, Rolland, L, Rosier-Lees, S, Rowell, G, Sahakian, V, Santangelo, A, Saugé, L, Schlenker, S, Schlickeiser, R, Schröder, R, Schwanke, U, Schwarzburg, S, Schwemmer, S, Shalchi, A, Sol, H, Spangler, D, Spanier, F, Steenkamp, R, Stegmann, C, Superina, G, Tam, PH, Tavernet, JP, Terrier, R, Tluczykont, M, Van Eldik, C, Vasileiadis, G, Venter, C, Vialle, JP, Vincent, P, Völk, HJ, Wagner, SJ & Ward, M 2007, 'Detection of VHE gamma-ray emission from the distant blazar 1ES 1101-232 with HESS and broadband characterisation', Astronomy and Astrophysics, VOL. 470, Numéro 2, p. 475-489. https://doi.org/10.1051/0004-6361:20077057

TY - JOUR

T1 - Detection of VHE gamma-ray emission from the distant blazar 1ES 1101-232 with HESS and broadband characterisation

AU - Aharonian, F.

AU - Akhperjanian, A. G.

AU - Bazer-Bachi, A. R.

AU - Beilicke, M.

AU - Benbow, W.

AU - Berge, D.

AU - Bernlöhr, K.

AU - Boisson, C.

AU - Bolz, O.

AU - Borrel, V.

AU - Braun, I.

AU - Brion, E.

AU - Brown, A. M.

AU - Bühler, R.

AU - Büsching, I.

AU - Boutelier, T.

AU - Carrigan, S.

AU - Chadwick, P. M.

AU - Chounet, L. M.

AU - Coignet, G.

AU - Cornils, R.

AU - Costamante, L.

AU - Degrange, B.

AU - Dickinson, H. J.

AU - Djannati-Ataï, A.

AU - O'C Drury, L.

AU - Dubus, G.

AU - Egberts, K.

AU - Emmanoulopoulos, D.

AU - Espigat, P.

AU - Farnier, C.

AU - Feinstein, F.

AU - Ferrero, E.

AU - Fiasson, A.

AU - Fontaine, G.

AU - Funk, Seb

AU - Funk, S.

AU - Füßling, M.

AU - Gallant, Y. A.

AU - Giebels, B.

AU - Glicenstein, J. F.

AU - Glück, B.

AU - Goret, P.

AU - Hadjichristidis, C.

AU - Häuser, D.

AU - Häuser, M.

AU - Heinzelmann, G.

AU - Henri, G.

AU - Hermann, G.

AU - Hinton, J. A.

AU - Hoffmann, A.

AU - Hofmann, W.

AU - Holleran, M.

AU - Hoppe, S.

AU - Horns, D.

AU - Jacholkowska, A.

AU - De Jager, O. C.

AU - Kendziorra, E.

AU - Kerschhaggl, M.

AU - Khélifi, B.

AU - Komin, Nu

AU - Kosack, K.

AU - Lamanna, G.

AU - Latham, I. J.

AU - Le Gallou, R.

AU - Lemière, A.

AU - Lemoine-Goumard, M.

AU - Lohse, T.

AU - Martin, J. M.

AU - Martineau-Huynh, O.

AU - Marcowith, A.

AU - Masterson, C.

AU - Maurin, G.

AU - McComb, T. J.L.

AU - Moulin, E.

AU - De Naurois, M.

AU - Nedbal, D.

AU - Nolan, S. J.

AU - Noutsos, A.

AU - Olive, J. P.

AU - Orford, K. J.

AU - Osborne, J. L.

AU - Panter, M.

AU - Pelletier, G.

AU - Petrucci, P. O.

AU - Pita, S.

AU - Pühlhofer, G.

AU - Punch, M.

AU - Ranchon, S.

AU - Raubenheimer, B. C.

AU - Raue, M.

AU - Rayner, S. M.

AU - Ripken, J.

AU - Rob, L.

AU - Rolland, L.

AU - Rosier-Lees, S.

AU - Rowell, G.

AU - Sahakian, V.

AU - Santangelo, A.

AU - Saugé, L.

AU - Schlenker, S.

AU - Schlickeiser, R.

AU - Schröder, R.

AU - Schwanke, U.

AU - Schwarzburg, S.

AU - Schwemmer, S.

AU - Shalchi, A.

AU - Sol, H.

AU - Spangler, D.

AU - Spanier, F.

AU - Steenkamp, R.

AU - Stegmann, C.

AU - Superina, G.

AU - Tam, P. H.

AU - Tavernet, J. P.

AU - Terrier, R.

AU - Tluczykont, M.

AU - Van Eldik, C.

AU - Vasileiadis, G.

AU - Venter, C.

AU - Vialle, J. P.

AU - Vincent, P.

AU - Völk, H. J.

AU - Wagner, S. J.

AU - Ward, M.

PY - 2007/8/1

Y1 - 2007/8/1

N2 - Context. The blazar 1ES 1101-232 was observed with the High Energy Stereoscopic System (HESS) of Atmospheric Cherenkov Telescopes (ACT) in 2004 and 2005, for a live time of 43 h. VHE (E > 1011 eV) γ-rays were detected for the first time from this object. Aims. VHE observations of blazars are used to investigate the inner parts of the blazar jets, and also to study the extragalactic background light (EBL) in the near-infrared band. Methods. Observations in 2005 were conducted in a multiwavelength campaign, together with the RXTE satellite and optical observations. In 2004, simultaneous observations with XMM-Newton were obtained. Results. 1ES 1101-232 was detected with HESS with an excess of 649 photons, at a significance of 10σ. The measured VHE γ-ray flux amounts to dN/dE = (5.63 ± 0.89) × 10-13(E/TeV)-(2.94±020) cm-2 s -1 TeV-1, above a spectral energy threshold of 225 GeV. No significant variation of the VHE γ-ray flux on any time scale was found. 1ES 1101-232 exhibits a very hard spectrum, and at a redshift of z = 0.186, is the blazar with the highest confirmed redshift detected in VHE γ-rays so far. Conclusions. The data allow the construction of truly simultaneous spectral energy distributions of the source, from the optical to the VHE band. Using an EBL model with vFv = 14 nWm-2 sr-1 at 1.5 μm as presented in Aharonian et al. (2006a) suggests an intrinsic VHE power output peak of the source at above 3 TeV.

AB - Context. The blazar 1ES 1101-232 was observed with the High Energy Stereoscopic System (HESS) of Atmospheric Cherenkov Telescopes (ACT) in 2004 and 2005, for a live time of 43 h. VHE (E > 1011 eV) γ-rays were detected for the first time from this object. Aims. VHE observations of blazars are used to investigate the inner parts of the blazar jets, and also to study the extragalactic background light (EBL) in the near-infrared band. Methods. Observations in 2005 were conducted in a multiwavelength campaign, together with the RXTE satellite and optical observations. In 2004, simultaneous observations with XMM-Newton were obtained. Results. 1ES 1101-232 was detected with HESS with an excess of 649 photons, at a significance of 10σ. The measured VHE γ-ray flux amounts to dN/dE = (5.63 ± 0.89) × 10-13(E/TeV)-(2.94±020) cm-2 s -1 TeV-1, above a spectral energy threshold of 225 GeV. No significant variation of the VHE γ-ray flux on any time scale was found. 1ES 1101-232 exhibits a very hard spectrum, and at a redshift of z = 0.186, is the blazar with the highest confirmed redshift detected in VHE γ-rays so far. Conclusions. The data allow the construction of truly simultaneous spectral energy distributions of the source, from the optical to the VHE band. Using an EBL model with vFv = 14 nWm-2 sr-1 at 1.5 μm as presented in Aharonian et al. (2006a) suggests an intrinsic VHE power output peak of the source at above 3 TeV.

KW - - Galaxies: active

KW - BL lacertae objects: individual: 1ES 1101-232

KW - Gamma rays: observations

U2 - 10.1051/0004-6361:20077057

DO - 10.1051/0004-6361:20077057

M3 - Article

AN - SCOPUS:34547284101

SN - 0004-6361

VL - 470

SP - 475

EP - 489

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 2

ER -

Detection of VHE gamma-ray emission from the distant blazar 1ES 1101-232 with HESS and broadband characterisation

Résumé

Accès au document

Empreinte digitale

Contient cette citation