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http://hdl.handle.net/2445/151000
Title: | Discovery of VHE γ-ray emission from the BL Lacertae object B3 2247+381 with the MAGIC telescopes |
Author: | Paredes i Poy, Josep Maria Ribó Gomis, Marc Munar i Adrover, Pere Moldón Vara, Francisco Javier |
Keywords: | Galàxies actives Active galaxies |
Issue Date: | 2-Mar-2012 |
Publisher: | EDP Sciences |
Abstract: | Aims: We study the non-thermal jet emission of the BL Lac object B3 2247+381 during a high optical state. Methods: The MAGIC telescopes observed the source during 13 nights between September 30th and October 30th 2010, collecting a total of 14.2 h of good quality very high energy (VHE) γ-ray data. Simultaneous multiwavelength data was obtained with X-ray observations by the Swift satellite and optical R-band observations at the KVA-telescope. We also use high energy γ-ray (HE, 0.1-100 GeV) data from the Fermi satellite. Results: The BL Lac object B3 2247+381 (z = 0.119) was detected, for the first time, at VHE γ-rays at a statistical significance of 5.6σ. A soft VHE spectrum with a photon index of -3.2 ± 0.6 was determined. No significant short term flux variations were found. We model the spectral energy distribution using a one-zone SSC-model, which can successfully describe our data. |
Note: | Reproducció del document publicat a: https://doi.org/10.1051/0004-6361/201117967 |
It is part of: | Astronomy & Astrophysics, 2012, vol. 539A, p. 118A |
URI: | http://hdl.handle.net/2445/151000 |
Related resource: | https://doi.org/10.1051/0004-6361/201117967 |
ISSN: | 0004-6361 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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