A4 Refereed article in a conference publication
EBL constraints using a sample of TeV gamma-ray emitters measured with the MAGIC telescopes
Authors: Mazin D, Dominguez A, Ramazani VF, Hassan T, Moralejo A, Rosillo MN, Vanzo G, Acosta MV
Conference name: High energy gamma ray astronomy: 6th international meeting on high energy gamma-ray astronomy
Publication year: 2017
Journal: AIP Conference Proceedings
Book title : High energy gamma ray astronomy: 6th international meeting on high energy gamma-ray astronomy
Journal name in source: HIGH ENERGY GAMMA-RAY ASTRONOMY
Journal acronym: AIP CONF PROC
Article number: UNSP 050037
Series title: AIP Conference Proceedings
Number in series: 010001
Volume: 1792
Number of pages: 6
ISBN: 978-0-7354-1456-3
ISSN: 0094-243X
DOI: https://doi.org/10.1063/1.4968983
Web address : http://aip.scitation.org/doi/pdf/10.1063/1.4968983
Self-archived copy’s web address: https://arxiv.org/abs/1610.09633
MAGIC is a stereoscopic system of two Imaging Atmospheric Cherenkov Telescopes operating in the very high energy (VHE) range from about 50 GeV to over 50 TeV. The VHE gamma-ray spectra measured at Earth carry an imprint of the extragalactic background light (EBL) and can be used to study the EBL density and its evolution in time. In the last few years, precision measurements of several blazars in the redshift range from z=0.03 up to z=0.9 were performed with MAGIC obtaining strong limits on the EBL density from single sources. In this paper, we present the results from a combined likelihood analysis using this broad redshift range sample of blazars allowing us to probe the EBL at different wavelengths. The implications on the EBL models and perspectives for future observations with MAGIC are also discussed.
