ABDALLA, H.; AUBERT, P.; CHEVALIER, Jill; FIASSON, A.; KRAYZEL, F.; LAMANNA, G.; LEES, J.P.; MAURIN, G.; PIEL, Q.; ROSIER-LEES, S.; SANCHEZ, D.A.; VUILLAUME, T.; BOLMONT, J.; CERRUTI, M.; CHALME-CALVET, R.; CHÉTIEN, M.; JACHOLKOWSKA, A.; KERSZBERG, D.; KIEFFER, M.; LENAIN, J.-P.; PERENNES, C.; SETTIMO, M.; TAVERNET, J.-P.; VINCENT, P.; BREGEON, J.; CHAVES, R.C.G.; DEVIN, J.; MARCOWITH, Alexandre; GALLANT, Y.A.; PADOVANI, M.; RENAUD, Matthieu; VASILEIADIS, George; CARR, J.; TRICHARD, C.; NIEMIEC, J.; ERNENWEIN, J.-P.; BRUN, F.; CONDON, B.; GRONDIN, M.-H.; LAFFON, H.; FEGAN, S.; DEGRANGE, B.; LEMOINE-GOUMARD, M.; GIEBELS, B.; FONTAINE, G.; HOLLER, M.; MARIAUD, C.; DE NAUROIS, M.; ZEFI, F.; ZABOROV, D.; DJANNATI-ATAÏ, A.; KHÉLIFI, B.; GABICI, S.; JOUVIN, L.; LEMIÈRE, A.; PITA, S.; PUNCH, M.; TAVERNIER, T.; TERRIER, R.; ARRIETA, M.; BOISSON, C.; HERVET, O.; LEFAUCHEUR, J.; SOL, Helene; RULTEN, C.; ZECH, A.

doi:10.1051/0004-6361/201629419

dc.contributor.author	ABDALLA, H.
hal.structure.identifier	Laboratoire d'Annecy de Physique des Particules [LAPP]
dc.contributor.author	AUBERT, P.
hal.structure.identifier	Laboratoire d'Annecy de Physique des Particules [LAPP]
dc.contributor.author	CHEVALIER, Jill
hal.structure.identifier	Laboratoire d'Annecy de Physique des Particules [LAPP]
dc.contributor.author	FIASSON, A.
hal.structure.identifier	Laboratoire d'Annecy de Physique des Particules [LAPP]
dc.contributor.author	KRAYZEL, F.
hal.structure.identifier	Laboratoire d'Annecy de Physique des Particules [LAPP]
dc.contributor.author	LAMANNA, G.
hal.structure.identifier	Laboratoire d'Annecy de Physique des Particules [LAPP]
dc.contributor.author	LEES, J.P.
hal.structure.identifier	Laboratoire d'Annecy de Physique des Particules [LAPP]
dc.contributor.author	MAURIN, G.
hal.structure.identifier	Laboratoire d'Annecy de Physique des Particules [LAPP]
dc.contributor.author	PIEL, Q.
hal.structure.identifier	Laboratoire d'Annecy de Physique des Particules [LAPP]
dc.contributor.author	ROSIER-LEES, S.
hal.structure.identifier	Laboratoire d'Annecy de Physique des Particules [LAPP]
dc.contributor.author	SANCHEZ, D.A.
hal.structure.identifier	Laboratoire d'Annecy de Physique des Particules [LAPP]
dc.contributor.author	VUILLAUME, T.
hal.structure.identifier	Laboratoire de Physique Nucléaire et de Hautes Énergies [LPNHE (UMR_7585)]
dc.contributor.author	BOLMONT, J.
hal.structure.identifier	Laboratoire de Physique Nucléaire et de Hautes Énergies [LPNHE (UMR_7585)]
dc.contributor.author	CERRUTI, M.
hal.structure.identifier	Laboratoire de Physique Nucléaire et de Hautes Énergies [LPNHE (UMR_7585)]
dc.contributor.author	CHALME-CALVET, R.
hal.structure.identifier	Laboratoire de Physique Nucléaire et de Hautes Énergies [LPNHE (UMR_7585)]
dc.contributor.author	CHÉTIEN, M.
hal.structure.identifier	Laboratoire de Physique Nucléaire et de Hautes Énergies [LPNHE (UMR_7585)]
dc.contributor.author	JACHOLKOWSKA, A.
hal.structure.identifier	Laboratoire de Physique Nucléaire et de Hautes Énergies [LPNHE (UMR_7585)]
dc.contributor.author	KERSZBERG, D.
hal.structure.identifier	Laboratoire de Physique Nucléaire et de Hautes Énergies [LPNHE (UMR_7585)]
dc.contributor.author	KIEFFER, M.
hal.structure.identifier	Laboratoire de Physique Nucléaire et de Hautes Énergies [LPNHE (UMR_7585)]
dc.contributor.author	LENAIN, J.-P.
hal.structure.identifier	Laboratoire de Physique Nucléaire et de Hautes Énergies [LPNHE (UMR_7585)]
dc.contributor.author	PERENNES, C.
hal.structure.identifier	Laboratoire de Physique Nucléaire et de Hautes Énergies [LPNHE (UMR_7585)]
dc.contributor.author	SETTIMO, M.
hal.structure.identifier	Laboratoire de Physique Nucléaire et de Hautes Énergies [LPNHE (UMR_7585)]
dc.contributor.author	TAVERNET, J.-P.
hal.structure.identifier	Laboratoire de Physique Nucléaire et de Hautes Énergies [LPNHE (UMR_7585)]
dc.contributor.author	VINCENT, P.
hal.structure.identifier	Laboratoire Univers et Particules de Montpellier [LUPM]
dc.contributor.author	BREGEON, J.
hal.structure.identifier	Laboratoire Univers et Particules de Montpellier [LUPM]
dc.contributor.author	CHAVES, R.C.G.
hal.structure.identifier	Laboratoire Univers et Particules de Montpellier [LUPM]
dc.contributor.author	DEVIN, J.
hal.structure.identifier	Laboratoire Univers et Particules de Montpellier [LUPM]
dc.contributor.author	MARCOWITH, Alexandre
hal.structure.identifier	Laboratoire Univers et Particules de Montpellier [LUPM]
dc.contributor.author	GALLANT, Y.A.
hal.structure.identifier	Laboratoire Univers et Particules de Montpellier [LUPM]
dc.contributor.author	PADOVANI, M.
hal.structure.identifier	Laboratoire Univers et Particules de Montpellier [LUPM]
dc.contributor.author	RENAUD, Matthieu
hal.structure.identifier	Laboratoire Univers et Particules de Montpellier [LUPM]
dc.contributor.author	VASILEIADIS, George
hal.structure.identifier	Centre de Physique des Particules de Marseille [CPPM]
dc.contributor.author	CARR, J.
hal.structure.identifier	Centre de Physique des Particules de Marseille [CPPM]
dc.contributor.author	TRICHARD, C.
hal.structure.identifier	Centre de Physique des Particules de Marseille [CPPM]
dc.contributor.author	NIEMIEC, J.
hal.structure.identifier	Centre de Physique des Particules de Marseille [CPPM]
dc.contributor.author	ERNENWEIN, J.-P.
hal.structure.identifier	Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.author	BRUN, F.
hal.structure.identifier	Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.author	CONDON, B.
hal.structure.identifier	Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.author	GRONDIN, M.-H.
hal.structure.identifier	Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.author	LAFFON, H.
hal.structure.identifier	Laboratoire Leprince-Ringuet [LLR]
dc.contributor.author	FEGAN, S.
hal.structure.identifier	Laboratoire Leprince-Ringuet [LLR]
dc.contributor.author	DEGRANGE, B.
hal.structure.identifier	Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.author	LEMOINE-GOUMARD, M.
hal.structure.identifier	Laboratoire Leprince-Ringuet [LLR]
dc.contributor.author	GIEBELS, B.
hal.structure.identifier	Laboratoire Leprince-Ringuet [LLR]
dc.contributor.author	FONTAINE, G.
hal.structure.identifier	Laboratoire Leprince-Ringuet [LLR]
dc.contributor.author	HOLLER, M.
hal.structure.identifier	Laboratoire Leprince-Ringuet [LLR]
dc.contributor.author	MARIAUD, C.
hal.structure.identifier	Laboratoire Leprince-Ringuet [LLR]
dc.contributor.author	DE NAUROIS, M.
hal.structure.identifier	Laboratoire Leprince-Ringuet [LLR]
dc.contributor.author	ZEFI, F.
hal.structure.identifier	Laboratoire Leprince-Ringuet [LLR]
dc.contributor.author	ZABOROV, D.
hal.structure.identifier	AstroParticule et Cosmologie [APC (UMR_7164)]
dc.contributor.author	DJANNATI-ATAÏ, A.
hal.structure.identifier	AstroParticule et Cosmologie [APC (UMR_7164)]
dc.contributor.author	KHÉLIFI, B.
hal.structure.identifier	AstroParticule et Cosmologie [APC (UMR_7164)]
dc.contributor.author	GABICI, S.
hal.structure.identifier	AstroParticule et Cosmologie [APC (UMR_7164)]
dc.contributor.author	JOUVIN, L.
hal.structure.identifier	AstroParticule et Cosmologie [APC (UMR_7164)]
dc.contributor.author	LEMIÈRE, A.
hal.structure.identifier	AstroParticule et Cosmologie [APC (UMR_7164)]
dc.contributor.author	PITA, S.
hal.structure.identifier	AstroParticule et Cosmologie [APC (UMR_7164)]
dc.contributor.author	PUNCH, M.
hal.structure.identifier	AstroParticule et Cosmologie [APC (UMR_7164)]
dc.contributor.author	TAVERNIER, T.
hal.structure.identifier	AstroParticule et Cosmologie [APC (UMR_7164)]
dc.contributor.author	TERRIER, R.
hal.structure.identifier	Laboratoire Univers et Théories [LUTH (UMR_8102)]
dc.contributor.author	ARRIETA, M.
hal.structure.identifier	Laboratoire Univers et Théories [LUTH (UMR_8102)]
dc.contributor.author	BOISSON, C.
hal.structure.identifier	Laboratoire Univers et Théories [LUTH (UMR_8102)]
dc.contributor.author	HERVET, O.
hal.structure.identifier	Laboratoire Univers et Théories [LUTH (UMR_8102)]
dc.contributor.author	LEFAUCHEUR, J.
hal.structure.identifier	Laboratoire Univers et Théories [LUTH (UMR_8102)]
dc.contributor.author	SOL, Helene
hal.structure.identifier	Laboratoire Univers et Théories [LUTH (UMR_8102)]
dc.contributor.author	RULTEN, C.
hal.structure.identifier	Laboratoire Univers et Théories [LUTH (UMR_8102)]
dc.contributor.author	ZECH, A.
dc.date.issued	2017
dc.identifier.issn	0004-6361
dc.description.abstractEn	Studying the temporal variability of BL Lac objects at the highest energies provides unique insights into the extreme physical processes occurring in relativistic jets and in the vicinity of super-massive black holes. To this end, the long-term variability of the BL Lac object PKS 2155−304 is analyzed in the high (HE, 100 MeV < E < 300 GeV) and very high energy (VHE, E > 200 GeV) γ-ray domain. Over the course of ~9 yr of H.E.S.S. observations the VHE light curve in the quiescent state is consistent with a log-normal behavior. The VHE variability in this state is well described by flicker noise (power-spectral-density index βVHE = 1.10+0.10-0.13) on timescales larger than one day. An analysis of ~5.5 yr of HE Fermi-LAT data gives consistent results (βHE = 1.20+0.21-0.23, on timescales larger than 10 days) compatible with the VHE findings. The HE and VHE power spectral densities show a scale invariance across the probed time ranges. A direct linear correlation between the VHE and HE fluxes could neither be excluded nor firmly established. These long-term-variability properties are discussed and compared to the red noise behavior (β ~ 2) seen on shorter timescales during VHE-flaring states. The difference in power spectral noise behavior at VHE energies during quiescent and flaring states provides evidence that these states are influenced by different physical processes, while the compatibility of the HE and VHE long-term results is suggestive of a common physical link as it might be introduced by an underlying jet-disk connection.
dc.language.iso	en
dc.publisher	EDP Sciences
dc.subject.en	galaxies: active
dc.subject.en	BL Lacertae objects: individual: PKS 2155-304
dc.subject.en	gamma rays: galaxies
dc.subject.en	galaxies: jets
dc.subject.en	galaxies: nuclei
dc.subject.en	radiation mechanisms: non-thermal
dc.title.en	Characterizing the γ-ray long-term variability of PKS 2155−304 with H.E.S.S. and Fermi-LAT
dc.type	Article de revue
dc.identifier.doi	10.1051/0004-6361/201629419
dc.subject.hal	Physique [physics]/Astrophysique [astro-ph]
dc.identifier.arxiv	1610.03311
bordeaux.journal	Astronomy and Astrophysics - A&A
bordeaux.page	A39
bordeaux.volume	598
bordeaux.peerReviewed	oui
hal.identifier	in2p3-01379906
hal.version	1
hal.popular	non
hal.audience	Internationale
hal.origin.link	https://hal.archives-ouvertes.fr//in2p3-01379906v1
bordeaux.COinS	ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Astronomy%20and%20Astrophysics%20-%20A&A&rft.date=2017&rft.volume=598&rft.spage=A39&rft.epage=A39&rft.eissn=0004-6361&rft.issn=0004-6361&rft.au=ABDALLA,%20H.&AUBERT,%20P.&CHEVALIER,%20Jill&FIASSON,%20A.&KRAYZEL,%20F.&rft.genre=article

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Characterizing the γ-ray long-term variability of PKS 2155−304 with H.E.S.S. and Fermi-LAT

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