Simultaneous multi-frequency observations of PG 1553+113
Nijil Mankuzhiyil, Daniela Dorner, Elisa Prandini, Massimo Persic (for, the MAGIC collaboration), Elena Pian, Filippo D'Ammando, Stefano Vercellone, (for the AGILE collaboration)
TL;DR
This paper presents the first simultaneous broad-band gamma-ray observations of the blazar PG 1553+113 across optical, X-ray, HE, and VHE energies, revealing a typical double-peak spectral energy distribution.
Contribution
It provides the first simultaneous broad-band gamma-ray data of a blazar, enabling detailed SED modeling with a synchrotron-self-Compton framework.
Findings
Confirmed the double-peak SED shape of PG 1553+113
Demonstrated the feasibility of simultaneous multi-frequency observations
Supported the SSC model for blazar emission mechanisms
Abstract
We report simultaneous multi-frequency observations of the blazar PG 1553+113, that were carried out in March-April 2008. Optical, X-ray, high-energy (HE; greater than 100 MeV) gamma-ray, and very-high- energy (VHE; greater than 100 GeV) gamma-ray data were obtained with the KVA, REM, RossiXTE/ASM, AGILE and MAGIC telescopes. This is the first simultaneous broad-band (i.e., HE+VHE) gamma-ray observation of a blazar. The source spectral energy distribution derived combining these data shows the usual double-peak shape, and is interpreted in the framework of a synchrotron-self-Compton model.
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Taxonomy
TopicsAstrophysics and Cosmic Phenomena · Gamma-ray bursts and supernovae · Pulsars and Gravitational Waves Research