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.
@article{arxiv.0907.0740,
title = {Simultaneous multi-frequency observations of PG 1553+113},
author = {Nijil Mankuzhiyil and Daniela Dorner and Elisa Prandini and Massimo Persic and Elena Pian and Filippo D'Ammando and Stefano Vercellone},
journal= {arXiv preprint arXiv:0907.0740},
year = {2019}
}
Comments
Contribution to the 31st ICRC, Lodz, Poland, July 2009