Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/81326
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Type: Journal article
Title: HESS and Fermi-LAT discovery of gamma-rays from the blazar 1ES 1312-423
Author: Maxted, N.
Rowell, G.
Citation: Monthly Notices of the Royal Astronomical Society, 2013; 434(3):1889-1901
Publisher: Blackwell Publishing Ltd
Issue Date: 2013
ISSN: 0035-8711
1365-2966
Statement of
Responsibility: 
HESS Collaboration, A. Abramowski ... N. Maxted ... G. Rowell ... et al.
Abstract: A deep observation campaign carried out by the High Energy Stereoscopic System (HESS) on Centaurus A enabled the discovery of γ-rays from the blazar 1ES 1312-423, 2° away from the radio galaxy. With a differential flux at 1 TeV of f(1 TeV) = (1.9 ± 0.6stat ± 0.4sys) × 10-13 cm-2 s-1 TeV-1 corresponding to 0.5 per cent of the Crab nebula differential flux and a spectral index γ = 2.9 ± 0.5stat ± 0.2sys, 1ES 1312-423 is one of the faintest sources ever detected in the very high energy (E <100 GeV) extragalactic sky. A careful analysis using three and a half years of Fermi Large Area Telescope (Fermi-LAT) data allows the discovery at high energies (100 < E MeV) of a hard spectrum (γ =1.4±0.4stat ±0.2sys) source coincident with 1ES 1312-423. Radio, optical, UV and X-ray observations complete the spectral energy distribution of this blazar, now covering 16 decades in energy. The emission is successfully fitted with a synchrotron self-Compton model for the non-thermal component, combined with a blackbody spectrum for the optical emission from the host galaxy. © 2013 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society.
Keywords: radiation mechanisms: non-thermal, galaxies: active, BL Lacertae objects: individual: 1ES 1312–423, galaxies: jets, gamma-rays: galaxies
Rights: © 2013 The Authors
DOI: 10.1093/mnras/stt1081
Published version: http://dx.doi.org/10.1093/mnras/stt1081
Appears in Collections:Aurora harvest 4
Chemistry and Physics publications

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