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Title: Discovery of VHE γ -ray emission from the BL Lacertae object B3 2247+381 with the MAGIC telescopes

Journal Article · · Astronomy and Astrophysics
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Here, we study the non-thermal jet emission of the BL Lac object B3 2247+381 during a high optical state. 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. We also dedected the BL Lac object B3 2247+381 (z = 0.119) , 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. Finally, we model the spectral energy distribution using a one-zone SSC-model, which can successfully describe our data.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Contributing Organization:
Fermi LAT Collaboration
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1356749
Journal Information:
Astronomy and Astrophysics, Vol. 539; ISSN 0004-6361
Publisher:
EDP SciencesCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 25 works
Citation information provided by
Web of Science

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Cited By (13)

GeV-TeV γ $\gamma $ -ray energy spectral break of BL Lac objects journal August 2018
Discovery of very high energy gamma-ray emission from the blazar 1ES 1727+502 with the MAGIC Telescopes journal March 2014
MAGIC detection of short-term variability of the high-peaked BL Lac object 1ES 0806+524 journal May 2015
Investigating the peculiar emission from the new VHE gamma-ray source H1722+119 journal March 2016
Multi-TeV Flaring from High-energy Blazars: An Evidence of the Photohadronic Process journal October 2019
MAGIC detection of short-term variability of the high-peaked BL Lac object 1ES 0806+524 text January 2015
Discovery of very high energy gamma-ray emission from the blazar 1ES 1727+502 with the MAGIC Telescopes text January 2014
Investigating the peculiar emission from the new VHE gamma-ray source H1722+119 text January 2016
Extragalactic Background Light from Hierarchical Galaxy Formation: Gamma-ray Attenuation up to the Epoch of Cosmic Reionization and the First Stars text January 2012
The extragalactic background light, the Hubble constant, and anomalies: conclusions from 20 years of TeV gamma-ray observations text January 2015
MAGIC detection of short-term variability of the high-peaked BL Lac object 1ES 0806+524 text January 2015
Investigating the peculiar emission from the new VHE gamma-ray source H1722+119 text January 2016
Multi-TeV flaring from high energy blazars: An evidence of the photohadronic process text January 2019

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