A multiwavelength view of the flaring state of PKS 2155-304 in 2006

A. Abramowski; Fabio Acero; F. Aharonian; A. G. Akhperjanian; G. Anton; Agnès Balzer; A. Barnacka; U. Barres de Almeida; Y. Becherini; J. Becker; B. Behera; W. Benbow; K. Bernlöhr; A. Bochow; C. Boisson; J. Bolmont; P. Bordas; T. Boutelier; J. Brucker; F. Brun; P. Brun; T. Bulik; I. Büsching; S. Carrigan; S. Casanova; M. Cerruti; P. M. Chadwick; A. Charbonnier; R. C. G. Chaves; A. Cheesebrough; L. -M. Chounet; A. C. Clapson; G. Coignet; G. Cologna; P. Colom; J. Conrad; N. Coudreau; 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; K. Dutson; J. Dyks; M. Dyrda; P. Edwards; K. Egberts; P. Eger; P. Espigat; L. Fallon; C. Farnier; S. Fegan; F. Feinstein; M. V. Fernandes; A. Fiasson; G. Fontaine; A. Förster; M. Füssling; Y. A. Gallant; H. Gast; M. J. Gaylard; L. Gérard; D. Gerbig; B. Giebels; J. F. Glicenstein; B. Glück; P. Goret; D. Göring; S. Häffner; J. D. Hague; D. Hampf; M. Hauser; S. Heinz; G. Heinzelmann; G. Henri; G. Hermann; J. A. Hinton; A. Hoffmann; W. Hofmann; P. Hofverberg; M. Holler; D. Horns; A. Jacholkowska; O. C. de Jager; C. Jahn; M. Jamrozy; I. Jung; M. A. Kastendieck; K. Katarzyński; U. Katz; S. Kaufmann; D. Keogh; D. Khangulyan; B. Khélifi; M. Klein; D. Klochkov; W. Kluźniak; T. Kneiske; Nu. Komin; K. Kosack; R. Kossakowski; P. Kubanek; H. Laffon; G. Lamanna; D. Lennarz; J. -P. Lenain; T. Lohse; A. Lopatin; C. -C. Lu; V. Marandon; Alexandre Marcowith; J. M. Martin; Julien Masbou; D. Maurin; N. Maxted; T. J. L. Mccomb; M. C. Medina; J. Méhault; G. Melady; N. Nguyen; R. Moderski; B. Monard; Emmanuel Moulin; C. L. Naumann; M. Naumann-Godo; M. de Naurois; D. Nedbal; D. Nekrassov; B. Nicholas; J. Niemiec; S. J. Nolan; S. Ohm; E. de Oña Wilhelmi; B. Opitz; M. Ostrowski; I. Oya; M. Panter; M. Paz Arribas; G. Pedaletti; G. Pelletier; P. -O. Petrucci; S. Pita; G. Pühlhofer; M. Punch; A. Quirrenbach; M. Raue; S. M. Rayner; A. Reimer; O. Reimer; Matthieu Renaud; R. de Los Reyes; F. Rieger; J. Ripken; L. Rob; S. Rosier-Lees; G. Rowell; B. Rudak; C. B. Rulten; J. Ruppel; F. Ryde; V. Sahakian; A. Santangelo; R. Schlickeiser; F. M. Schöck; A. Schulz; U. Schwanke; S. Schwarzburg; S. Schwemmer; M. Sikora; J. L. Skilton; H. Sol; G. Spengler; Ł. Stawarz; R. Steenkamp; C. Stegmann; F. Stinzing; K. Stycz; I. Sushch; A. Szostek; J. -P. Tavernet; R. Terrier; M. Tluczykont; A. Tzioumis; K. Valerius; C. van Eldik; George Vasileiadis; C. Venter; L. Venter; J. P. Vialle; A. Viana; P. Vincent; H. J. Völk; F. Volpe; S. Vorobiov; M. Vorster; S. J. Wagner; M. Ward; R. White; A. Wierzcholska; M. Zacharias; A. Zajczyk; A. A. Zdziarski; A. Zech; H. -S. Zechlin

doi:10.1051/0004-6361/201117509

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A multiwavelength view of the flaring state of PKS 2155-304 in 2006

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A multiwavelength view of the flaring state of PKS 2155-304 in 2006

A. Abramowski, Fabio Acero, F. Aharonian, A. G. Akhperjanian, G. Anton, Agnès Balzer, A. Barnacka, U. Barres de Almeida, Y. Becherini, J. Becker, …

Astronomy & Astrophysics - A&A, Vol.539

2012

DOI: https://doi.org/10.1051/0004-6361/201117509

Abstract

Multiwavelength (MWL) observations of the blazar PKS 2155-304 during two weeks in July and August 2006, the period when two exceptional flares at very high energies (VHE, E>= 100 GeV) occurred, provide a detailed picture of the evolution of its emission. The complete data set from this campaign is presented, including observations in VHE gamma-rays (H.E.S.S.), X-rays (RXTE, CHANDRA, SWIFT XRT), optical (SWIFT UVOT, Bronberg, Watcher, ROTSE), and in the radio band (NRT, HartRAO, ATCA). Optical and radio light curves from 2004 to 2008 are compared to the available VHE data from this period, to put the 2006 campaign into the context of the long-term evolution of the source. The X-ray and VHE gamma-ray emission are correlated during the observed high state of the source, but show no direct connection with longer wavelengths. The long-term flux evolution in the optical and radio bands is found to be correlated and shows that the source reaches a high state at long wavelengths after the occurrence of the VHE flares. Spectral hardening is seen in the SWIFT XRT data. The nightly averaged high-energy spectra of the non-flaring nights can be reproduced by a stationary one-zone SSC model, with only small variations in the parameters. The spectral and flux evolution in the high-energy band during the night of the second VHE flare is modelled with multi-zone SSC models, which can provide relatively simple interpretations for the hour time-scale evolution of the high-energy emission, even for such a complex data set. For the first time in this type of source, a clear indication is found for a relation between high activity at high energies and a long-term increase in the low frequency fluxes.

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Title: A multiwavelength view of the flaring state of PKS 2155-304 in 2006
Creators - without role: A. Abramowski - Universität Hamburg
Fabio Acero - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
F. Aharonian - Dublin Institute For Advanced Studies
A. G. Akhperjanian - National Academy of Sciences of Armenia
G. Anton - Friedrich-Alexander-Universität Erlangen-Nürnberg
Agnès Balzer - Friedrich-Alexander-Universität Erlangen-Nürnberg
A. Barnacka - Nicolaus Copernicus Astronomical Center
U. Barres de Almeida - Durham University
Y. Becherini - École Polytechnique
J. Becker - Ruhr University Bochum
B. Behera - Heidelberg University
W. Benbow - Universität Hamburg
K. Bernlöhr - Max Planck Institute for Nuclear Physics
A. Bochow - Max Planck Institute for Nuclear Physics
C. Boisson - Université Paris Cité
J. Bolmont - Laboratoire de Physique Nucléaire et de Hautes Énergies
P. Bordas - University of Tübingen
T. Boutelier - Sorbonne Université
J. Brucker - Friedrich-Alexander-Universität Erlangen-Nürnberg
F. Brun - École Polytechnique
P. Brun - CEA Paris-Saclay
T. Bulik - University of Warsaw
I. Büsching - Ruhr University Bochum
S. Carrigan - Max Planck Institute for Nuclear Physics
S. Casanova - Ruhr University Bochum
M. Cerruti - Université Paris Cité
P. M. Chadwick - Durham University
A. Charbonnier - Laboratoire de Physique Nucléaire et de Hautes Énergies
R. C. G. Chaves - Max Planck Institute for Nuclear Physics
A. Cheesebrough - Durham University
L. -M. Chounet - Laboratoire Leprince-Ringuet
A. C. Clapson - Max Planck Institute for Nuclear Physics
G. Coignet - Laboratoire d’Annecy de Physique des Particules
G. Cologna - Heidelberg University
P. Colom - Université Paris Cité
J. Conrad - Stockholm University
N. Coudreau - Galaxies, Etoiles, Physique et Instrumentation
M. Dalton - Humboldt-Universität zu Berlin
M. K. Daniel - Durham University
I. D. Davids - University of Namibia
B. Degrange - École Polytechnique
C. Deil - Max Planck Institute for Nuclear Physics
H. J. Dickinson - Stockholm University
A. Djannati-Ataï - AstroParticule et Cosmologie
W. Domainko - Max Planck Institute for Nuclear Physics
L. O'C. Drury
F. Dubois - Institut National de Physique Nucléaire et de Physique des Particules
G. Dubus - Institut de Planétologie et d'Astrophysique de Grenoble
K. Dutson - University of Leicester
J. Dyks - Nicolaus Copernicus Astronomical Center
M. Dyrda - Institute of Nuclear Physics, Polish Academy of Sciences
P. Edwards - Australia Telescope National Facility
K. Egberts - Universität Innsbruck
P. Eger - Friedrich-Alexander-Universität Erlangen-Nürnberg
P. Espigat - Université Paris Cité
L. Fallon - Dublin Institute For Advanced Studies
C. Farnier - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
S. Fegan - Centre National de la Recherche Scientifique
F. Feinstein - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
M. V. Fernandes - Universität Hamburg
A. Fiasson - Laboratoire d’Annecy de Physique des Particules
G. Fontaine - Laboratoire Leprince-Ringuet
A. Förster - Max Planck Institute for Nuclear Physics
M. Füssling
Y. A. Gallant - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
H. Gast - Max Planck Institute for Nuclear Physics
M. J. Gaylard - Hartebeesthoek Radio Astronomy Observatory
L. Gérard - Université Paris Cité
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
S. Häffner - Friedrich-Alexander-Universität Erlangen-Nürnberg
J. D. Hague - Max Planck Institute for Nuclear Physics
D. Hampf - Universität Hamburg
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 - Max Planck Institute for Nuclear Physics
J. A. Hinton - University of Leicester
A. Hoffmann - University of Tübingen
W. Hofmann - Max Planck Institute for Nuclear Physics
P. Hofverberg - Max Planck Institute for Nuclear Physics
M. Holler - Friedrich-Alexander-Universität Erlangen-Nürnberg
D. Horns - Universität Hamburg
A. Jacholkowska
O. C. de Jager - North-West University
C. Jahn - Friedrich-Alexander-Universität Erlangen-Nürnberg
M. Jamrozy - Jagiellonian University
I. Jung - Friedrich-Alexander-Universität Erlangen-Nürnberg
M. A. Kastendieck - Universität Hamburg
K. Katarzyński - Nicolaus Copernicus University
U. Katz - Friedrich-Alexander-Universität Erlangen-Nürnberg
S. Kaufmann - Heidelberg University
D. Keogh - Durham University
D. Khangulyan - Max Planck Institute for Nuclear Physics
B. Khélifi - École Polytechnique
M. Klein - Heidelberg University
D. Klochkov - University of Tübingen
W. Kluźniak - Nicolaus Copernicus Astronomical Center
T. Kneiske - Universität Hamburg
Nu. Komin - Laboratoire d’Annecy de Physique des Particules
K. Kosack - Institut de Recherche sur les Lois Fondamentales de l'Univers
R. Kossakowski - Laboratoire d’Annecy de Physique des Particules
P. Kubanek - Charles University
H. Laffon - École Polytechnique
G. Lamanna - Institut National de Physique Nucléaire et de Physique des Particules
D. Lennarz - Max Planck Institute for Nuclear Physics
J. -P. Lenain - Université Paris Cité
T. Lohse - Humboldt-Universität zu Berlin
A. Lopatin - Friedrich-Alexander-Universität Erlangen-Nürnberg
C. -C. Lu - Max Planck Institute for Nuclear Physics
V. Marandon - Université Paris Cité
Alexandre Marcowith - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
J. M. Martin - Janssen
Julien Masbou - Laboratoire d’Annecy de Physique des Particules
D. Maurin - Université Paris Cité
N. Maxted - University of Adelaide
T. J. L. Mccomb - Durham University
M. C. Medina - CEA Paris-Saclay
J. Méhault - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
G. Melady - University College Dublin
N. Nguyen - Universität Hamburg
R. Moderski - Nicolaus Copernicus Astronomical Center
B. Monard - Bronberg Observatory
Emmanuel Moulin - CEA Paris-Saclay
C. L. Naumann - Sorbonne Université
M. Naumann-Godo - CEA Paris-Saclay
M. de Naurois - École Polytechnique
D. Nedbal - Charles University
D. Nekrassov - Max Planck Institute for Nuclear Physics
B. Nicholas - University of Adelaide
J. Niemiec - Institute of Nuclear Physics, Polish Academy of Sciences
S. J. Nolan - Durham University
S. Ohm - University of Leicester
E. de Oña Wilhelmi
B. Opitz - Universität Hamburg
M. Ostrowski - Jagiellonian University
I. Oya
M. Panter - Max Planck Institute for Nuclear Physics
M. Paz Arribas - Humboldt-Universität zu Berlin
G. Pedaletti - Heidelberg University
G. Pelletier - Centre National de la Recherche Scientifique
P. -O. Petrucci - Université Joseph Fourier
S. Pita - Laboratoire AstroParticule et Cosmologie
G. Pühlhofer - University of Tübingen
M. Punch - Université Paris Cité
A. Quirrenbach - Heidelberg University
M. Raue - Universität Hamburg
S. M. Rayner - Durham University
A. Reimer - Universität Innsbruck
O. Reimer - Universität Innsbruck
Matthieu Renaud - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
R. de Los Reyes
F. Rieger - Max Planck Institute for Nuclear Physics
J. Ripken - Stockholm University
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
F. Ryde - KTH Royal Institute of Technology
V. Sahakian - A. Alikhanyan National Laboratory
A. Santangelo - University of Tübingen
R. Schlickeiser - Ruhr University Bochum
F. M. Schöck - Friedrich-Alexander-Universität Erlangen-Nürnberg
A. Schulz - Friedrich-Alexander-Universität Erlangen-Nürnberg
U. Schwanke - Humboldt-Universität zu Berlin
S. Schwarzburg - University of Tübingen
S. Schwemmer - Heidelberg University
M. Sikora - Nicolaus Copernicus Astronomical Center
J. L. Skilton - University of Leeds
H. Sol - Université Paris Cité
G. Spengler - Humboldt-Universität zu Berlin
Ł. Stawarz - Jagiellonian University
R. Steenkamp - University of Namibia
C. Stegmann - Friedrich-Alexander-Universität Erlangen-Nürnberg
F. Stinzing - Friedrich-Alexander-Universität Erlangen-Nürnberg
K. Stycz - Friedrich-Alexander-Universität Erlangen-Nürnberg
I. Sushch - Humboldt-Universität zu Berlin
A. Szostek - Jagiellonian University
J. -P. Tavernet
R. Terrier - Centre National de la Recherche Scientifique
M. Tluczykont - Universität Hamburg
A. Tzioumis - Commonwealth Scientific and Industrial Research Organisation
K. Valerius - Friedrich-Alexander-Universität Erlangen-Nürnberg
C. van Eldik - Max Planck Institute for Nuclear Physics
George Vasileiadis - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
C. Venter - North-West University
L. Venter - A. Alikhanyan National Laboratory
J. P. Vialle - Institut National de Physique Nucléaire et de Physique des Particules
A. Viana - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
P. Vincent - Laboratoire de Physique Nucléaire et de Hautes Énergies
H. J. Völk - Max Planck Institute for Nuclear Physics
F. Volpe - Max Planck Institute for Nuclear Physics
S. Vorobiov - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
M. Vorster - North-West University
S. J. Wagner - Heidelberg University
M. Ward - Durham University
R. White - University of Leicester
A. Wierzcholska - Jagiellonian University
M. Zacharias - Ruhr University Bochum
A. Zajczyk - Laboratoire Univers et Particules de Montpellier
A. A. Zdziarski - Nicolaus Copernicus Astronomical Center
A. Zech - Universität Hamburg
H. -S. Zechlin - Universität Hamburg
Publication Details: Astronomy & Astrophysics - A&A, Vol.539
Identifiers: 9936462009311
Academic Unit: Laboratoire Univers et Particules de Montpellier - LUPM
Language: English
Resource Type: Journal article
Local Fields: in2p3-00679463