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Title:
Multiwavelength analysis of the TeV Blazar RGB J0152+017
Authors:
Kaufmann, S.; Gerard, L.; Giebels, B.; Hauser, M.; Herzog, J.; Lenain, J.-P.; Nedbal, D.; Wagner, S.
Affiliation:
AA(ZAH, Landessternwarte, Universität Heidelberg, Germany), AB(Astroparticule et Cosmologie (APC), CNRS, Universite Paris, France), AC(Laboratoire Leprince-Ringuet, Ecole Polytechnique, CNRS/IN2P3, Palaiseau, France), AD(ZAH, Landessternwarte, Universität Heidelberg, Germany), AE(ZAH, Landessternwarte, Universität Heidelberg, Germany), AF(Laboratoire Univers et Théories (LUTH), Observatoire de Paris, CNRS, Université Paris Diderot, Meudon, France), AG(Institute of Particle and Nuclear Physics, Charles University, Prague, Czech Republic), AH(ZAH, Landessternwarte, Universität Heidelberg, Germany)
Publication:
HIGH ENERGY GAMMA-RAY ASTRONOMY: Proceedings of the 4th International Meeting on High Energy Gamma-Ray Astronomy. AIP Conference Proceedings, Volume 1085, pp. 549-552 (2008). (AIPC Homepage)
Publication Date:
12/2008
Origin:
AIP
PACS Keywords:
Quasars, gamma-ray sources; gamma-ray bursts, X- and gamma-ray telescopes and instrumentation
DOI:
10.1063/1.3076731
Bibliographic Code:
2008AIPC.1085..549K

Abstract

VHE gamma-ray emission was discovered from the high-frequency-peaked BL Lac object RGB J0152+017 in November 2007. The instantaneously triggered multiwavelength observations with the X-ray satellites Swift and RXTE, the optical telescope ATOM and the radio telescope Nancay provided the first simultaneous SED for RGB J0152+017. While these and further observations with H.E.S.S. gives no indication for variability, the follow-up observations until January 2008 with Swift (X-ray and UV-optical telescope) and ATOM (optical) show flux variations on time scales of ~10 days with different variability patterns. This non-monotonically flux variation of the simultaneous multiwavelength observations lead to the conclusion that the shape of the synchrotron spectrum changes.
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