PKS 2005-489 at VHE: Four Years of Monitoring with HESS and Simultaneous Multi-wavelength Observations

Fabio Acero; F. Aharonian; A.G. Akhperjanian; G. Anton; U. Barres de Almeida; A.R. Bazer-Bachi; Y. Becherini; B. Behera; W. Benbow; K. Bernlöhr; A. Bochow; C. Boisson; J. Bolmont; V. Borrel; J. Brucker; F. Brun; P. Brun; R. Bühler; T. Bulik; I. Büsching; T. Boutelier; P.M. Chadwick; A. Charbonnier; R.C.G. Chaves; A. Cheesebrough; L.-M. Chounet; A.C. Clapson; G. Coignet; L. Costamante; 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; P. Eger; P. Espigat; L. Fallon; C. Farnier; S. Fegan; F. Feinstein; A. Fiasson; A. Förster; G. Fontaine; M. Füssling; S. Gabici; Y.A. Gallant; L. Gérard; D. Gerbig; B. Giebels; J.F. Glicenstein; B. Glück; P. Goret; D. Göring; M. Hauser; S. Heinz; G. Heinzelmann; G. Henri; G. Hermann; J.A. Hinton; A. Hoffmann; W. Hofmann; P. Hofverberg; M. Holleran; S. Hoppe; D. Horns; A. Jacholkowska; O.C. de Jager; C. Jahn; I. Jung; K. Katarzynski; U. Katz; S. Kaufmann; M. Kerschhaggl; D. Khangulyan; B. Khélifi; D. Keogh; D. Klochkov; W. Kluzniak; T. Kneiske; Nu. Komin; K. Kosack; R. Kossakowski; G. Lamanna; J.-P. Lenain; T. Lohse; V. Marandon; O. Martineau-Huynh; A. Marcowith; Julien Masbou; D. Maurin; T.J.L. Mccomb; M.C. Medina; J. Méhault; 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; 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:10.1051/0004-6361/200913073

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PKS 2005-489 at VHE: Four Years of Monitoring with HESS and Simultaneous Multi-wavelength Observations

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PKS 2005-489 at VHE: Four Years of Monitoring with HESS and Simultaneous Multi-wavelength Observations

Fabio Acero, F. Aharonian, A.G. Akhperjanian, G. Anton, U. Barres de Almeida, A.R. Bazer-Bachi, Y. Becherini, B. Behera, W. Benbow, K. Bernlöhr, …

Astronomy & Astrophysics - A&A, Vol.511

2010

DOI: https://doi.org/10.1051/0004-6361/200913073

Abstract

VHE observations of PKS 2005-489 were made with HESS from 2004 through 2007, together with three simultaneous multi-wavelength campaigns performed with XMM-Newton and RXTE in 2004 and 2005. A strong VHE signal, ~17sigma total, is detected during the four years of HESS observations (90.3 hrs live time). The integral flux above the average analysis threshold of 400 GeV is ~3% of the Crab and varies weakly on time-scales from days to years. At X-ray energies the flux is observed to vary by more than an order of magnitude between 2004 and 2005. Strong changes in the X-ray spectrum (DeltaGamma~0.7) are also observed, which appear to be mirrored in the VHE band. The SED of PKS 2005-489, constructed for the first time with contemporaneous data on both humps, shows significant evolution. The large flux variations in the X-ray band, coupled with weak or no variations in the VHE band and a similar spectral behavior, suggest the emergence of a new, separate, harder emission component in September 2005.

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Title: PKS 2005-489 at VHE: Four Years of Monitoring with HESS and Simultaneous Multi-wavelength Observations
Creators - without role: Fabio Acero - Institut National de Physique Nucléaire et de Physique des Particules
F. Aharonian - Dublin Institute For Advanced Studies
A.G. Akhperjanian - A. Alikhanyan National Laboratory
G. Anton - Friedrich-Alexander-Universität Erlangen-Nürnberg
U. Barres de Almeida
A.R. Bazer-Bachi - Université Toulouse III - Paul Sabatier
Y. Becherini - Laboratoire AstroParticule et Cosmologie
B. Behera - Heidelberg University
W. Benbow - Kavli Institute for Particle Astrophysics and Cosmology
K. Bernlöhr - Humboldt-Universität zu Berlin
A. Bochow - Kavli Institute for Particle Astrophysics and Cosmology
C. Boisson - Délégation Paris 7
J. Bolmont - Laboratoire de Physique Nucléaire et de Hautes Énergies
V. Borrel - Université Toulouse III - Paul Sabatier
J. Brucker - Friedrich-Alexander-Universität Erlangen-Nürnberg
F. Brun - Sorbonne Université
P. Brun - Institut de Recherche sur les Lois Fondamentales de l'Univers
R. Bühler - Kavli Institute for Particle Astrophysics and Cosmology
T. Bulik - University of Warsaw
I. Büsching - North-West University
T. Boutelier - Université Joseph Fourier
P.M. Chadwick - Durham University
A. Charbonnier - Laboratoire de Physique Nucléaire et de Hautes Énergies
R.C.G. Chaves - Center for Astrophysics Harvard & Smithsonian
A. Cheesebrough - Durham University
L.-M. Chounet - Centre National de la Recherche Scientifique
A.C. Clapson - Kavli Institute for Particle Astrophysics and Cosmology
G. Coignet - Laboratoire d’Annecy de Physique des Particules
L. Costamante
M. Dalton - Humboldt-Universität zu Berlin
M.K. Daniel - Durham University
I.D. Davids - North-West University
B. Degrange - École Polytechnique
C. Deil - Center for Astrophysics Harvard & Smithsonian
H.J. Dickinson - Durham University
A. Djannati-Ataï - APC - Astrophysique des Hautes Energies
W. Domainko - Kavli Institute for Particle Astrophysics and Cosmology
L.O'C. Drury
F. Dubois - Laboratoire d’Annecy de Physique des Particules
G. Dubus - Centre National de la Recherche Scientifique
J. Dyks - Nicolaus Copernicus Astronomical Center
M. Dyrda - Institute of Nuclear Physics, Polish Academy of Sciences
K. Egberts - Kavli Institute for Particle Astrophysics and Cosmology
P. Eger - Friedrich-Alexander-Universität Erlangen-Nürnberg
P. Espigat - Université Paris Cité
L. Fallon - Dublin Institute For Advanced Studies
C. Farnier - Laboratoire de Physique Théorique
S. Fegan - École Polytechnique
F. Feinstein - Laboratoire de Physique Théorique
A. Fiasson - Laboratoire d’Annecy de Physique des Particules
A. Förster - Kavli Institute for Particle Astrophysics and Cosmology
G. Fontaine - Laboratoire Leprince-Ringuet
M. Füssling
S. Gabici - Dublin Institute For Advanced Studies
Y.A. Gallant - Institut National de Physique Nucléaire et de Physique des Particules
L. Gérard - Laboratoire AstroParticule et Cosmologie
D. Gerbig - Ruhr University Bochum
B. Giebels - Laboratoire Leprince-Ringuet
J.F. Glicenstein - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
B. Glück - Friedrich-Alexander-Universität Erlangen-Nürnberg
P. Goret - Institut de Recherche sur les Lois Fondamentales de l'Univers
D. Göring - Friedrich-Alexander-Universität Erlangen-Nürnberg
M. Hauser - Heidelberg University
S. Heinz - Friedrich-Alexander-Universität Erlangen-Nürnberg
G. Heinzelmann - Universität Hamburg
G. Henri - Centre National de la Recherche Scientifique
G. Hermann - Kavli Institute for Particle Astrophysics and Cosmology
J.A. Hinton - University of Leeds
A. Hoffmann - University of Tübingen
W. Hofmann - Kavli Institute for Particle Astrophysics and Cosmology
P. Hofverberg - Kavli Institute for Particle Astrophysics and Cosmology
M. Holleran - North-West University
S. Hoppe - Kavli Institute for Particle Astrophysics and Cosmology
D. Horns - Universität Hamburg
A. Jacholkowska - Laboratoire de Physique Nucléaire et de Hautes Énergies
O.C. de Jager - North-West University
C. Jahn - Friedrich-Alexander-Universität Erlangen-Nürnberg
I. Jung - Friedrich-Alexander-Universität Erlangen-Nürnberg
K. Katarzynski - Nicolaus Copernicus University
U. Katz - Friedrich-Alexander-Universität Erlangen-Nürnberg
S. Kaufmann - Heidelberg University
M. Kerschhaggl - Humboldt-Universität zu Berlin
D. Khangulyan - Center for Astrophysics Harvard & Smithsonian
B. Khélifi - Laboratoire Leprince-Ringuet
D. Keogh - Durham University
D. Klochkov - University of Tübingen
W. Kluzniak - Nicolaus Copernicus Astronomical Center
T. Kneiske - Universität Hamburg
Nu. Komin - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
K. Kosack - Center for Astrophysics Harvard & Smithsonian
R. Kossakowski - Laboratoire d’Annecy de Physique des Particules
G. Lamanna - Laboratoire d’Annecy de Physique des Particules
J.-P. Lenain - Délégation Paris 7
T. Lohse - Humboldt-Universität zu Berlin
V. Marandon - Laboratoire AstroParticule et Cosmologie
O. Martineau-Huynh - Laboratoire de Physique Nucléaire et de Hautes Énergies
A. Marcowith - Centre National de la Recherche Scientifique
Julien Masbou - Laboratoire d’Annecy de Physique des Particules
D. Maurin - Laboratoire de Physique Nucléaire et de Hautes Énergies
T.J.L. Mccomb - Durham University
M.C. Medina - Centre National de la Recherche Scientifique
J. Méhault - Institut National de Physique Nucléaire et de Physique des Particules
R. Moderski - Nicolaus Copernicus Astronomical Center
Emmanuel Moulin - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
M. Naumann-Godo - École Polytechnique
M. de Naurois - Sorbonne Université
D. Nedbal - Charles University
D. Nekrassov - Kavli Institute for Particle Astrophysics and Cosmology
B. Nicholas - University of Adelaide
J. Niemiec - Institute of Nuclear Physics, Polish Academy of Sciences
S.J. Nolan - Durham University
S. Ohm - Kavli Institute for Particle Astrophysics and Cosmology
J.-F. Olive - Laboratoire d'Analyse et d'Architecture des Systèmes
E. de Oña Wilhelmi - Kavli Institute for Particle Astrophysics and Cosmology
K.J. Orford - Durham University
M. Ostrowski - Jagiellonian University
M. Panter - Kavli Institute for Particle Astrophysics and Cosmology
M. Paz Arribas
G. Pedaletti - Heidelberg University
G. Pelletier - Université Joseph Fourier
P.-O. Petrucci - Centre National de la Recherche Scientifique
S. Pita - Université Paris Cité
G. Pühlhofer - University of Tübingen
M. Punch - Laboratoire AstroParticule et Cosmologie
A. Quirrenbach - Heidelberg University
B.C. Raubenheimer - North-West University
M. Raue
S.M. Rayner - Durham University
M. Renaud - Laboratoire AstroParticule et Cosmologie
F. Rieger
J. Ripken - Universität Hamburg
L. Rob - Charles University
S. Rosier-Lees - Laboratoire d’Annecy de Physique des Particules
G. Rowell - University of Adelaide
B. Rudak - Nicolaus Copernicus Astronomical Center
C.B. Rulten - Durham University
J. Ruppel - Ruhr University Bochum
V. Sahakian - A. Alikhanyan National Laboratory
A. Santangelo - University of Tübingen
R. Schlickeiser - Ruhr University Bochum
F.M. Schöck - Friedrich-Alexander-Universität Erlangen-Nürnberg
U. Schwanke - Humboldt-Universität zu Berlin
S. Schwarzburg - University of Tübingen
S. Schwemmer - Heidelberg University
A. Shalchi - Ruhr University Bochum
M. Sikora - Nicolaus Copernicus Astronomical Center
J.L. Skilton - University of Leeds
H. Sol - Délégation Paris 7
Ł. Stawarz - Jagiellonian University
R. Steenkamp - University of Namibia
C. Stegmann - Friedrich-Alexander-Universität Erlangen-Nürnberg
F. Stinzing - Friedrich-Alexander-Universität Erlangen-Nürnberg
G. Superina - École Polytechnique
A. Szostek - Université Joseph Fourier
P.H. Tam - Heidelberg University
J.-P. Tavernet - Laboratoire de Physique Nucléaire et de Hautes Énergies
R. Terrier - Université Paris Cité
O. Tibolla - Kavli Institute for Particle Astrophysics and Cosmology
M. Tluczykont - Universität Hamburg
C. van Eldik - Kavli Institute for Particle Astrophysics and Cosmology
G. Vasileiadis - Laboratoire de Physique Théorique
C. Venter - North-West University
L. Venter - Université Paris Cité
J.P. Vialle - Institut National de Physique Nucléaire et de Physique des Particules
P. Vincent - Sorbonne Université
M. Vivier - Institut de Recherche sur les Lois Fondamentales de l'Univers
H.J. Völk - Kavli Institute for Particle Astrophysics and Cosmology
F. Volpe - Kavli Institute for Particle Astrophysics and Cosmology
S.J. Wagner - Heidelberg University
M. Ward - Durham University
A.A. Zdziarski - Nicolaus Copernicus Astronomical Center
A. Zech - Centre National de la Recherche Scientifique
Publication Details: Astronomy & Astrophysics - A&A, Vol.511
Identifiers: 9935208809311
Academic Unit: Université de Montpellier
Language: English
Resource Type: Journal article
Local Fields: in2p3-00445182