VHE γ-ray emission of PKS 2155-304: spectral and temporal variability

被引：84

作者：

Abramowski, A. ^{[4
]}

Acero, F. ^{[15
]}

Aharonian, F. ^{[1
,13
]}

Akhperjanian, A. G. ^{[2
]}

Anton, G. ^{[16
]}

de Almeida, U. Barres ^{[8
]}

Bazer-Bachi, A. R. ^{[3
]}

Becherini, Y. ^{[12
]}

Behera, B. ^{[14
]}

Benbow, W. ^{[1
]}

Bernloehr, K. ^{[1
,5
]}

Bochow, A. ^{[1
]}

Boisson, C. ^{[6
]}

Bolmont, J. ^{[19
]}

Borrel, V. ^{[3
]}

Brucker, J. ^{[16
]}

Brun, F. ^{[19
]}

Brun, P. ^{[7
]}

Buehler, R. ^{[1
]}

Bulik, T. ^{[29
]}

Buesching, I. ^{[9
]}

Boutelier, T. ^{[17
]}

Chadwick, P. M. ^{[8
]}

Charbonnier, A. ^{[19
]}

Chaves, R. C. G. ^{[1
]}

Cheesebrough, A. ^{[8
]}

Chounet, L. -M. ^{[10
]}

Clapson, A. C. ^{[1
]}

Coignet, G. ^{[11
]}

Conrad, J. ^{[31
]}

Costamante, L. ^{[1
,34
]}

Dalton, M. ^{[5
]}

Daniel, M. K. ^{[8
]}

Davids, I. D. ^{[9
,22
]}

Degrange, B. ^{[10
]}

Deil, C. ^{[1
]}

Dickinson, H. J. ^{[8
]}

Djannati-Atai, A. ^{[12
]}

Domainko, W. ^{[1
]}

Drury, L. O'C. ^{[13
]}

Dubois, F. ^{[11
]}

Dubus, G. ^{[17
]}

Dyks, J. ^{[24
]}

Dyrda, M. ^{[28
]}

Egberts, K. ^{[1
,30
]}

Eger, P. ^{[16
]}

Espigat, P. ^{[12
]}

Fallon, L. ^{[13
]}

Farnier, C. ^{[15
]}

Fegan, S. ^{[10
]}

机构：

[1] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany

[2] Yerevan Phys Inst, Yerevan 375036, Armenia

[3] CNRS UPS, Ctr Etud Spatiale Rayonnements, F-31029 Toulouse 4, France

[4] Univ Hamburg, Inst Expt Phys, D-22761 Hamburg, Germany

[5] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

[6] Univ Paris Diderot, CNRS, Observ Paris, LUTH, F-92190 Meudon, France

[7] CEA Saclay, DSM IRFU, F-91191 Gif Sur Yvette, France

[8] Univ Durham, Dept Phys, Durham DH1 3LE, England

[9] North West Univ, Unit Space Phys, ZA-2520 Potchefstroom, South Africa

[10] Ecole Polytech, CNRS IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France

[11] Univ Savoie, CNRS IN2P3, Lab Annecy le Vieux Phys Particules, F-74941 Annecy Le Vieux, France

[12] Univ Paris 07, CNRS, UMR 7164, Observ Paris,CEA, F-75205 Paris 13, France

[13] Dublin Inst Adv Studies, Dublin 2, Ireland

[14] Heidelberg Univ, D-69117 Heidelberg, Germany

[15] Univ Montpellier 2, Lab Phys Theoret & Astroparticules, CNRS, IN2P3, D-52425 Montpellier 5, France

[16] Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany

[17] Univ Grenoble 1, CNRS, Lab Astrophys Grenoble, F-38041 Grenoble 9, France

[18] Univ Tubingen, Inst Astron & Astrophys, D-72076 Tubingen, Germany

[19] Univ Denis Diderot Paris 7, Univ Paris 06, LPNHE, CNRS,IN2P3, F-75252 Paris 5, France

[20] Charles Univ Prague, Fac Math & Phys, Inst Particle & Nucl Phys, CR-18000 Prague 8, Czech Republic

[21] Ruhr Univ Bochum, Inst Theoret Phys, Lehrstuhl Weltraum & Astrophys 4, D-44780 Bochum, Germany

[22] Univ Namibia, Dept Phys, Windhoek, Namibia

[23] Uniwersytet Jagiellonski, Obserwatorium Astron, PL-30244 Krakow, Poland

[24] Nicolaus Copernicus Astron Ctr, PL-00716 Warsaw, Poland

[25] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England

[26] Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia

[27] Nicholas Copernicus Univ, Torun Ctr Astron, PL-87100 Torun, Poland

[28] Inst Fiz Jadrowej PAN, PL-31342 Krakow, Poland

[29] Univ Warsaw, Astron Observ, PL-00478 Warsaw, Poland

[30] Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria

[31] Stockholm Univ, Oskar Klein Ctr, Dept Phys, Albanova Univ Ctr, S-10691 Stockholm, Sweden

[32] Royal Inst Technol KTH, Oskar Klein Ctr, Dept Phys, S-10691 Stockholm, Sweden

[33] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England

[34] CNRS & MPG, European Associated Lab Gamma Ray Astron, Paris, France

来源：

ASTRONOMY & ASTROPHYSICS | 2010年 / 520卷

基金：

英国科学技术设施理事会; 新加坡国家研究基金会;

关键词：

gamma rays: general; galaxies: active; galaxies: jets; BL Lacertae objects: individual: PKS 2155-304; PHOTON BREEDING MECHANISM; RAPID TEV VARIABILITY; MULTIWAVELENGTH OBSERVATIONS; MARKARIAN; 421; MKN-421; HESS; FLUX; BINARIES; GALAXIES; FLICKER;

D O I：

10.1051/0004-6361/201014484

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Context. Observations of very high-energy.-rays from blazars provide information about acceleration mechanisms occurring in their innermost regions. Studies of variability in these objects lead to a better understanding of the mechanisms in play. Aims. To investigate the spectral and temporal variability of VHE (>100 GeV) gamma-rays of the well-known high-frequency-peaked BL Lac object PKS 2155-304 with the HESS imaging atmospheric Cherenkov telescopes over a wide range of flux states. Methods. Data collected from 2005 to 2007 were analyzed. Spectra were derived on time scales ranging from 3 years to 4 min. Light curve variability was studied through doubling timescales and structure functions and compared with red noise process simulations. Results. The source was found to be in a low state from 2005 to 2007, except for a set of exceptional flares that occurred in July 2006. The quiescent state of the source is characterized by an associated mean flux level of (4.32 +/- 0.09(stat) +/- 0.86(syst)) x 10(-11) cm(-2) s(-1) above 200 GeV, or approximately 15% of the Crab Nebula, and a power-law photon index of Gamma = 3.53 +/- 0.06(stat) +/- 0.10(syst). During the flares of July 2006, doubling timescales of similar to 2 min are found. The spectral index variation is examined over two orders of magnitude in flux, yielding different behavior at low and high fluxes, which is a new phenomenon in VHE gamma-ray emitting blazars. The variability amplitude characterized by the fractional rms F-var is strongly energy-dependent and is proportional to E-0.19 +/- 0.01. The light curve rms correlates with the flux. This is the signature of a multiplicative process that can be accounted for as a red noise with a Fourier index of similar to 2. Conclusions. This unique data set shows evidence of a low-level.-ray emission state from PKS 2155-304 that possibly has a different origin than the outbursts. The discovery of the light curve ognormal behavior might be an indicator of the origin of aperiodic variability in blazars.

引用

页数：16

共 58 条

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Aharonian, F.
Akhperjanian, A. G.
de Almeida, U. Barres
Bazer-Bachi, A. R.
Behera, B.
Beilicke, M.
Benbow, W.
Bernloehr, K.
Boisson, C.
Bolz, O.
Borrel, V.
Braun, I.
Brion, E.
Brown, A. M.
Buehler, R.
Bulik, T.
Buesching, I.
Boutelier, T.
Carrigan, S.
Chadwick, P. M.
Chounet, L. -M.
Clapson, A. C.
Coignet, G.
Cornils, R.
Costamante, L.
Dalton, M.
Degrange, B.
Dickinson, H. J.
Djannati-Atai, A.
Domainko, W.
Drury, L. O'C.
Dubois, F.
Dubus, G.
Dyks, J.
Egberts, K.
Emmanoulopoulos, D.
Espigat, P.
Farnier, C.
Feinstein, F.
Fiasson, A.
Foerster, A.
Fontaine, G.
Funk, Seb.
Fuessling, M.
Gallant, Y. A.
Giebels, B.
Glicenstein, J. F.
Glueck, B.
Goret, P.
Hadjichristidis, C.
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Akhperjanian, A. G.
Bazer-Bachi, A. R.
Behera, B.
Beilicke, M.
Benbow, W.
Berge, D.
Bernloehr, K.
Boisson, C.
Bolz, O.
Borrel, V.
Boutelier, T.
Braun, I.
Brion, E.
Brown, A. M.
Buehler, R.
Buesching, I.
Bulik, T.
Carrigan, S.
Chadwick, P. M.
Clapson, A. C.
Chounet, L.-M.
Coignet, G.
Cornils, R.
Costamante, L.
Degrange, B.
Dickinson, H. J.
Djannati-Atai, A.
Domainko, W.
Drury, L. O'C.
Dubus, G.
Dyks, J.
Egberts, K.
Emmanoulopoulos, D.
Espigat, P.
Farnier, C.
Feinstein, F.
Fiasson, A.
Foerster, A.
Fontaine, G.
Funk, Seb.
Funk, S.
Fuessling, M.
Gallant, Y. A.
Giebels, B.
Glicenstein, J. F.
Glueck, B.
Goret, P.
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Hauser, D.
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Boisson, C.
Bolz, O.
Borrel, V.
Braun, I.
Breitling, F.
Brown, A. M.
Buehler, R.
Buesching, I.
Carrigan, S.
Chadwick, P. M.
Chounet, L. -M.
Cornils, R.
Costamante, L.
Degrange, B.
Dickinson, H. J.
Djannati-Atai, A.
Drury, L. O'C.
Dubus, G.
Egberts, K.
Emmanoulopoulos, D.
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Fiasson, A.
Fontaine, G.
Funk, Seb.
Funk, S.
Gallant, Y. A.
Giebels, B.
Glicenstein, J. F.
Goret, P.
Hadjichristidis, C.
Hauser, D.
Hauser, M.
Heinzelmann, G.
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Holleran, M
Horns, D
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Degrange, B
Djannati-Ataï, AD
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Funk, S
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Henri, G
Hermann, G
Hinton, JA
Hofmann, W
Holleran, M
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de Jager, OC
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Komin, N
Konopelko, A
Latham, IJ
Le Gallou, R
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Akhperjanian, A. G.
Barres de Almeida, U.
Bazer-Bachi, A. R.
Becherini, Y.
Behera, B.
Benbow, W.
Bernloehr, K.
Boisson, C.
Bochow, A.
Borrel, V.
Braun, I.
Brion, E.
Brucker, J.
Brun, P.
Buehler, R.
Bulik, T.
Buesching, I.
Boutelier, T.
Carrigan, S.
Chadwick, P. M.
Charbonnier, A.
Chaves, R. C. G.
Cheesebrough, A.
Chounet, L. -M.
Clapson, A. C.
Coignet, G.
Costamante, L.
Dalton, M.
Degrange, B.
Deil, C.
Dickinson, H. J.
Djannati-Atai, A.
Domainko, W.
Drury, L. O'C.
Dubois, F.
Dubus, G.
Dyks, J.
Dyrda, M.
Egberts, K.
Emmanoulopoulos, D.
Espigat, P.
Farnier, C.
Feinstein, F.
Fiasson, A.
Foerster, A.
Fontaine, G.
Fuessling, M.
Gabici, S.
Gallant, Y. A.
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Akhperjanian, A. G.
de Almeida, U. Barres
Bazer-Bachi, A. R.
Becherini, Y.
Behera, B.
Beilicke, M.
Benbow, W.
Bernloehr, K.
Boisson, C.
Bochow, A.
Borrel, V.
Braun, I.
Brion, E.
Brucker, J.
Brun, P.
Buehler, R.
Bulik, T.
Buesching, I.
Boutelier, T.
Carrigan, S.
Chadwick, P. M.
Charbonnier, A.
Chaves, R. C. G.
Chounet, L. -M.
Clapson, A. C.
Coignet, G.
Costamante, L.
Dalton, M.
Degrange, B.
Deil, C.
Dickinson, H. J.
Djannati-Atai, A.
Domainko, W.
Drury, L. O'C.
Dubois, F.
Dubus, G.
Dyks, J.
Egberts, K.
Emmanoulopoulos, D.
Espigat, P.
Farnier, C.
Feinstein, F.
Fiasson, A.
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Akhperjanian, A. G.
Anton, G.
de Almeida, U. Barres
Bazer-Bachi, A. R.
Becherini, Y.
Behera, B.
Benbow, W.
Bernloehr, K.
Boisson, C.
Bochow, A.
Borrel, V.
Brion, E.
Brucker, J.
Brun, P.
Buehler, R.
Bulik, T.
Buesching, I.
Boutelier, T.
Chadwick, P. M.
Charbonnier, A.
Chaves, R. C. G.
Cheesebrough, A.
Chounet, L. -M.
Clapson, A. C.
Coignet, G.
Costamante, L.
Dalton, M.
Daniel, M. K.
Davids, I. D.
Degrange, B.
Deil, C.
Dickinson, H. J.
Djannati-Atai, A.
Domainko, W.
Drury, L. O'C.
Dubois, F.
Dubus, G.
Dyks, J.
Dyrda, M.
Egberts, K.
Emmanoulopoulos, D.
Espigat, P.
Farnier, C.
Feinstein, F.
Fiasson, A.
Foerster, A.
Fontaine, G.
Fuessling, M.
Gabici, S.
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← 1 2 3 4 5 6 →

共 58 条

[1] New constraints on the mid-IR EBL from the HESS discovery of VHE γ-rays from 1ES 0229+200
Aharonian, F.
Akhperjanian, A. G.
de Almeida, U. Barres
Bazer-Bachi, A. R.
Behera, B.
Beilicke, M.
Benbow, W.
Bernloehr, K.
Boisson, C.
Bolz, O.
Borrel, V.
Braun, I.
Brion, E.
Brown, A. M.
Buehler, R.
Bulik, T.
Buesching, I.
Boutelier, T.
Carrigan, S.
Chadwick, P. M.
Chounet, L. -M.
Clapson, A. C.
Coignet, G.
Cornils, R.
Costamante, L.
Dalton, M.
Degrange, B.
Dickinson, H. J.
Djannati-Atai, A.
Domainko, W.
Drury, L. O'C.
Dubois, F.
Dubus, G.
Dyks, J.
Egberts, K.
Emmanoulopoulos, D.
Espigat, P.
Farnier, C.
Feinstein, F.
Fiasson, A.
Foerster, A.
Fontaine, G.
Funk, Seb.
Fuessling, M.
Gallant, Y. A.
Giebels, B.
Glicenstein, J. F.
Glueck, B.
Goret, P.
Hadjichristidis, C.
[J]. ASTRONOMY & ASTROPHYSICS, 2007, 475 (02) : L9 - L13
[2] An exceptional very high energy gamma-ray flare of PKS 2155-304
Aharonian, F.
Akhperjanian, A. G.
Bazer-Bachi, A. R.
Behera, B.
Beilicke, M.
Benbow, W.
Berge, D.
Bernloehr, K.
Boisson, C.
Bolz, O.
Borrel, V.
Boutelier, T.
Braun, I.
Brion, E.
Brown, A. M.
Buehler, R.
Buesching, I.
Bulik, T.
Carrigan, S.
Chadwick, P. M.
Clapson, A. C.
Chounet, L.-M.
Coignet, G.
Cornils, R.
Costamante, L.
Degrange, B.
Dickinson, H. J.
Djannati-Atai, A.
Domainko, W.
Drury, L. O'C.
Dubus, G.
Dyks, J.
Egberts, K.
Emmanoulopoulos, D.
Espigat, P.
Farnier, C.
Feinstein, F.
Fiasson, A.
Foerster, A.
Fontaine, G.
Funk, Seb.
Funk, S.
Fuessling, M.
Gallant, Y. A.
Giebels, B.
Glicenstein, J. F.
Glueck, B.
Goret, P.
Hadjichristidis, C.
Hauser, D.
[J]. ASTROPHYSICAL JOURNAL, 2007, 664 (02) : L71 - L74
[3] Observations of the crab nebula with HESS
Aharonian, F.
Akhperjanian, A. G.
Bazer-Bachi, A. R.
Beilicke, M.
Benbow, W.
Berge, D.
Bernloehr, K.
Boisson, C.
Bolz, O.
Borrel, V.
Braun, I.
Breitling, F.
Brown, A. M.
Buehler, R.
Buesching, I.
Carrigan, S.
Chadwick, P. M.
Chounet, L. -M.
Cornils, R.
Costamante, L.
Degrange, B.
Dickinson, H. J.
Djannati-Atai, A.
Drury, L. O'C.
Dubus, G.
Egberts, K.
Emmanoulopoulos, D.
Espigat, P.
Feinstein, F.
Ferrero, E.
Fiasson, A.
Fontaine, G.
Funk, Seb.
Funk, S.
Gallant, Y. A.
Giebels, B.
Glicenstein, J. F.
Goret, P.
Hadjichristidis, C.
Hauser, D.
Hauser, M.
Heinzelmann, G.
Henri, G.
Hermann, G.
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Hofmann, W.
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Horns, D.
Jacholkowska, A.
de Jager, O. C.
[J]. ASTRONOMY & ASTROPHYSICS, 2006, 457 (03) : 899 - 915
[4] Observations of Mkn 421 in 2004 with HESS at large zenith angles
Aharonian, F
Akhperjanian, AG
Aye, KM
Bazer-Bachi, AR
Beilicke, M
Benbow, W
Berge, D
Berghaus, P
Bernlöhr, K
Boisson, C
Bolz, O
Braun, I
Breitling, F
Brown, AM
Gordo, JB
Chadwick, PM
Chounet, LM
Cornils, R
Costamante, L
Degrange, B
Djannati-Ataï, A
Drury, LOC
Dubus, G
Emmanoulopoulos, D
Espigat, P
Feinstein, F
Fleury, P
Fontaine, G
Fuchs, Y
Funk, S
Gallant, YA
Giebels, B
Gillessen, S
Glicenstein, JF
Goret, P
Hadjichristidis, C
Hauser, M
Heinzelmann, G
Henri, G
Hermann, G
Hinton, JA
Hofmann, W
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de Jager, OC
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Komin, N
Konopelko, A
Latham, IJ
Le Gallou, R
[J]. ASTRONOMY & ASTROPHYSICS, 2005, 437 (01): : 95 - 99
[5] Multi-wavelength observations of PKS 2155-304 with HESS
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Akhperjanian, AG
Bazer-Bachi, AR
Beilicke, M
Benbow, W
Berge, D
Bernlöhr, K
Boisson, C
Bolz, O
Borrel, V
Braun, I
Breitling, F
Brown, AM
Chadwick, PM
Chounet, LM
Cornils, R
Costamante, L
Degrange, B
Dickinson, HJ
Djannati-Atai, A
Drury, LO
Dubus, G
Emmanoulopoulos, D
Espigat, P
Feinstein, F
Fontaine, G
Fuchs, Y
Funk, S
Gallant, YA
Giebels, B
Gillessen, S
Glicenstein, JF
Goret, P
Hadjichristidis, C
Hauser, M
Heinzelmann, G
Henri, G
Hermann, G
Hinton, JA
Hofmann, W
Holleran, M
Horns, D
Jacholkowska, A
de Jager, OC
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Konopelko, A
Latham, IJ
Le Gallou, R
Lemière, A
[J]. ASTRONOMY & ASTROPHYSICS, 2005, 442 (03) : 895 - 907
[6] HESS observations of PKS 2155-304
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Akhperjanian, AG
Aye, KM
Bazer-Bachi, AR
Beilicke, M
Benbow, W
Berge, D
Berghaus, P
Bernlöhr, K
Bolz, O
Boisson, C
Borgmeier, C
Breitling, F
Brown, AM
Gordo, JB
Chadwick, PM
Chitnis, VR
Chounet, LM
Cornils, R
Costamante, L
Degrange, B
Djannati-Ataï, AD
Drury, LO
Ergin, T
Espigat, P
Feinstein, F
Fleury, P
Fontaine, G
Funk, S
Gallant, YA
Giebels, B
Gillessen, S
Goret, P
Guy, J
Hadjichristidis, C
Hauser, M
Heinzelmann, G
Henri, G
Hermann, G
Hinton, JA
Hofmann, W
Holleran, M
Horns, D
de Jager, OC
Jung, I
Khélifi, B
Komin, N
Konopelko, A
Latham, IJ
Le Gallou, R
[J]. ASTRONOMY & ASTROPHYSICS, 2005, 430 (03): : 865 - 875
[7] Energy Spectrum of Cosmic-Ray Electrons at TeV Energies
Aharonian, F.
Akhperjanian, A. G.
Barres de Almeida, U.
Bazer-Bachi, A. R.
Becherini, Y.
Behera, B.
Benbow, W.
Bernloehr, K.
Boisson, C.
Bochow, A.
Borrel, V.
Braun, I.
Brion, E.
Brucker, J.
Brun, P.
Buehler, R.
Bulik, T.
Buesching, I.
Boutelier, T.
Carrigan, S.
Chadwick, P. M.
Charbonnier, A.
Chaves, R. C. G.
Cheesebrough, A.
Chounet, L. -M.
Clapson, A. C.
Coignet, G.
Costamante, L.
Dalton, M.
Degrange, B.
Deil, C.
Dickinson, H. J.
Djannati-Atai, A.
Domainko, W.
Drury, L. O'C.
Dubois, F.
Dubus, G.
Dyks, J.
Dyrda, M.
Egberts, K.
Emmanoulopoulos, D.
Espigat, P.
Farnier, C.
Feinstein, F.
Fiasson, A.
Foerster, A.
Fontaine, G.
Fuessling, M.
Gabici, S.
Gallant, Y. A.
[J]. PHYSICAL REVIEW LETTERS, 2008, 101 (26)
[8] Limits on an Energy Dependence of the Speed of Light from a Flare of the Active Galaxy PKS 2155-304
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Akhperjanian, A. G.
de Almeida, U. Barres
Bazer-Bachi, A. R.
Becherini, Y.
Behera, B.
Beilicke, M.
Benbow, W.
Bernloehr, K.
Boisson, C.
Bochow, A.
Borrel, V.
Braun, I.
Brion, E.
Brucker, J.
Brun, P.
Buehler, R.
Bulik, T.
Buesching, I.
Boutelier, T.
Carrigan, S.
Chadwick, P. M.
Charbonnier, A.
Chaves, R. C. G.
Chounet, L. -M.
Clapson, A. C.
Coignet, G.
Costamante, L.
Dalton, M.
Degrange, B.
Deil, C.
Dickinson, H. J.
Djannati-Atai, A.
Domainko, W.
Drury, L. O'C.
Dubois, F.
Dubus, G.
Dyks, J.
Egberts, K.
Emmanoulopoulos, D.
Espigat, P.
Farnier, C.
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Gabici, S.
Gallant, Y. A.
Gerard, L.
[J]. PHYSICAL REVIEW LETTERS, 2008, 101 (17)
[9] Variations of the TeV energy spectrum at different flux levels of Mkn 421 observed with the HEGRA system of Cherenkov telescopes
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Akhperjanian, A
Beilicke, M
Bernlöhr, K
Börst, H
Bojahr, H
Bolz, O
Coarasa, T
Contreras, J
Cortina, J
Costamante, L
Denninghoff, S
Fonseca, V
Girma, M
Götting, N
Heinzelmann, G
Hermann, G
Heusler, A
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Kettler, J
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Kranich, D
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Lopez, M
Lorenz, E
Lucarelli, F
Mang, O
Meyer, H
Mirzoyan, R
Milite, M
Moralejo, A
Ona, E
Panter, M
Plyasheshnikov, A
Pühlhofer, G
Rauterberg, G
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Rhode, W
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Rowell, G
Sahakian, V
Samorski, M
Schilling, M
[J]. ASTRONOMY & ASTROPHYSICS, 2002, 393 (01) : 89 - 99
[10] Simultaneous multiwavelength observations of the second exceptional γ-ray flare of PKS2155-304 in July 2006
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Akhperjanian, A. G.
Anton, G.
de Almeida, U. Barres
Bazer-Bachi, A. R.
Becherini, Y.
Behera, B.
Benbow, W.
Bernloehr, K.
Boisson, C.
Bochow, A.
Borrel, V.
Brion, E.
Brucker, J.
Brun, P.
Buehler, R.
Bulik, T.
Buesching, I.
Boutelier, T.
Chadwick, P. M.
Charbonnier, A.
Chaves, R. C. G.
Cheesebrough, A.
Chounet, L. -M.
Clapson, A. C.
Coignet, G.
Costamante, L.
Dalton, M.
Daniel, M. K.
Davids, I. D.
Degrange, B.
Deil, C.
Dickinson, H. J.
Djannati-Atai, A.
Domainko, W.
Drury, L. O'C.
Dubois, F.
Dubus, G.
Dyks, J.
Dyrda, M.
Egberts, K.
Emmanoulopoulos, D.
Espigat, P.
Farnier, C.
Feinstein, F.
Fiasson, A.
Foerster, A.
Fontaine, G.
Fuessling, M.
Gabici, S.
[J]. ASTRONOMY & ASTROPHYSICS, 2009, 502 (03) : 749 - 770

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