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VERITAS and multiwavelength observations of the BL Lacertae object 1ES 1741+196
Journal article   Open access   Peer reviewed

VERITAS and multiwavelength observations of the BL Lacertae object 1ES 1741+196

A. U Abeysekara, S Archambault, A Archer, W Benbow, R Bird, J Biteau, M Buchovecky, J. H Buckley, V Bugaev, K Byrum, …
Monthly notices of the Royal Astronomical Society, Vol.459(3), pp.2550-2557
07/01/2016
DOI: 10.1093/mnras/stw664
url
https://doi.org/10.1093/mnras/stw664View
Published (Version of record) Open Access

Abstract

We present results from multiwavelength observations of the BL Lacertae object 1ES 1741 + 196, including results in the very high energy γ-ray regime using the Very Energetic Radiation Imaging Telescope Array System (VERITAS). The VERITAS time-averaged spectrum, measured above 180 GeV, is well modelled by a power law with a spectral index of 2.7 ± 0.7stat ± 0.2syst. The integral flux above 180 GeV is (3.9 ± 0.8stat ± 1.0syst) × 10−8 m−2 s−1, corresponding to 1.6 per cent of the Crab nebula flux on average. The multiwavelength spectral energy distribution of the source suggests that 1ES 1741+196 is an extreme-high-frequency-peaked BL Lacertae object. The observations analysed in this paper extend over a period of six years, during which time no strong flares were observed in any band. This analysis is therefore one of the few characterizations of a blazar in a non-flaring state.
relativistic processes astroparticle physics galaxies: individual: 1ES 1741+196 = VER J1744+195

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