Simultaneous multi-frequency observation of the unknown redshift blazar PG 1553+113 in March- April 2008 (CROSBI ID 156406)
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Aleksić, J. ; ... ; Dominis Prester, Dijana ; ... ; Ferenc, Daniel ; ... ; Godinović, Nikola ; ... ; Hrupec, Dario ; ... ; Puljak, Ivica ; ... ; Surić, Tihomir
engleski
Simultaneous multi-frequency observation of the unknown redshift blazar PG 1553+113 in March- April 2008
The blazar PG 1553+113 is a well known TeV γ- ray emitter. In this paper, we determine its spectral energy distribution using simultaneous multi- frequency data in order to study its emission processes. An extensive campaign was carried out between March and April 2008, where optical, X-ray, high-energy (HE) γ-ray, and very-high-energy (VHE) γ-ray data were obtained with the KVA, Abastumani, REM, RossiXTE/ASM, AGILE and MAGIC telescopes, respectively. This is the first simultaneous broad-band (i.e., HE+VHE) γ-ray observation, though AGILE did not detect the source. We combine data to derive source’s spectral energy distribution and interpret its double peaked shape within the framework of a synchrotron self compton model.
BL Lacertae objects: individual: PG 1553+113; Gamma rays: observation; Gamma rays: theory
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