Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S.

@article{Abramowski2013MeasurementOT,
  title={Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S.},
  author={H.E.S.S. collaboration A. Abramowski and Fabio Acero and Felix Aharonian and A. G. Akhperjanian and Gisela Anton and Shangkari Balenderan and Arnim Balzer and Anna Barnacka and Y Becherini and Julia K. Becker Tjus and Konrad Bernlohr and Emrah Birsin and Jonathan Biteau and Anne Bochow and Catherine Boisson and Julien Bolmont and Pol Bordas and J. Brucker and F. Brun and P. Brun and Tomasz Bulik and Svenja Carrigan and S. Casanova and M. Cerruti and Paula M Chadwick and Ald{\'e}e Charbonnier and Ryan C. G. Chaves and A. Cheesebrough and Gabriele Cologna and Janet M. Conrad and C. Couturier and Matthew Dalton and M. K. Daniel and I. D. Davids and B. Degrange and Christoph Deil and P. deWilt and Hugh Dickinson and Arache Djannati-Atai and Wilfried F. Domainko and Luke O'c. Drury and Guillaume Dubus and Kathleen Dutson and Jarosław Dyks and Michal Dyrda and Kathrin Egberts and Peter Eger and P. Espigat and Lisa Fallon and Christian Farnier and Stephen Fegan and Fabrice Feinstein and Milton Virg{\'i}lio Fernandes and Diane Fernandez and A. Fiasson and Gilles Fontaine and Andreas Forster and Matthias Fussling and Michael Gajdus and Yves A. Gallant and Tania Garrigoux and Henning Gast and Berrie Giebels and J. F. Glicenstein and B. Gluck and D. Goring and M.-H. Grondin and S. Haffner and John D. Hague and Joachim Hahn and Daniel Hampf and J. Harris and Sebastian Heinz and G{\"o}tz Heinzelmann and Gilles Henri and German Hermann and Andreas Hillert and J. A. Hinton and W. Hofmann and Petter Hofverberg and Markus Holler and Dieter Horns and A. Jacholkowska and Constanze Jahn and Marek Jamrozy and Ira Jung and Max Anton Kastendieck and K. Katarzy'nski and Uli Katz and Sarah Kaufmann and Bruno Kh'elifi and Dmitry Klochkov and Wlodek Klu'zniak and Tanja M. Kneiske and Nu. Komin and K. Kosack and R. Kossakowski and Fabien Krayzel and H'elene Laffon and Giovanni Lamanna and J.-P. Lenain and Dirk Lennarz and Thomas Lohse and Anatoli N. Lopatin and C.-C. Lu and V. Marandon and Alexandre Marcowith and Julien Masbou and Gilles Maurin and Nigel I. Maxted and Matthias P. Mayer and T. J. L. Mccomb and Maria Clara Medina and J. M'ehault and Ulf Menzler and Rafal Moderski and Mahmoud Mohamed and Emmanuel Moulin and Christopher Lindsay Naumann and Melitta Naumann-Godo and Mathieu de Naurois and Dalibor Nedbal and Nelly Nguyen and Jacek Niemiec and S. J. Nolan and S. Ohm and Emma de O{\~n}a Wilhelmi and B. Opitz and Michał Ostrowski and Igor Oya and Mike Panter and Dan Parsons and Manuel Paz Arribas and Nikki Pekeur and Guy B. Pelletier and J. Valero P{\'e}rez and P.-O. Petrucci and Bernard Peyaud and Santiago Pita and Gerd Puhlhofer and M. Punch and Andreas Quirrenbach and Martin Raue and A. Reimer and O. Reimer and Matthieu Renaud and Raquel de los Reyes and Frank M. Rieger and Joachim Ripken and L. Rob and S. Rosier-Lees and Gavin Rowell and B. Rudak and Cameron B Rulten and Vardan Sahakian and D. A. Sanchez and A. Santangelo and Reinhard Schlickeiser and Alexander Schulz and U. Schwanke and Stefan Schwarzburg and Stefanie Schwemmer and Farzaneh Sheidaei and Joanna Skilton and H'elene Sol and Gerrit Spengler and Lukasz Stawarz and Riaan Steenkamp and Christian M Stegmann and F. Stinzing and Kornelia Stycz and Iurii Sushch and Anna Z. Sz{\'o}stek and J-P. Tavernet and R. Terrier and Martin Tluczykont and Kathrin Valerius and Christopher van Eldik and Georges Vasileiadis and Christo Venter and Aion Viana and Pascal Vincent and Heinrich J. Volk and Francesca Volpe and Serguei Vorobiov and Martine Vorster and S. J. Wagner and Martin J. Ward and R. M. White and Alicja Wierzcholska and Denis Wouters and Michael Zacharias and Anna Zajczyk and Andrzej A. Zdziarski and Andreas Zech and Hannes-S. Zechlin},
  journal={Astronomy and Astrophysics},
  year={2013},
  volume={550},
  pages={1-11}
}
The extragalactic background light (EBL) is the diffuse radiation with the second highest energy density in the Universe after the cosmic microwave background. The aim of this study is the measurement of the imprint of the EBL opacity to gamma-rays on the spectra of the brightest extragalactic sources detected with the High Energy Stereoscopic System (H.E.S.S.). The originality of the method lies in the joint fit of the EBL optical depth and of the intrinsic spectra of the sources, assuming… 
Measurement of the extragalactic background light using MAGIC and Fermi-LAT gamma-ray observations of blazars up to z = 1
We present a measurement of the extragalactic background light (EBL) based on a joint likelihood analysis of 32 gamma-ray spectra for 12 blazars in the redshift range z = 0.03 to 0.944, obtained by
Measurement of the EBL spectral energy distribution using the VHE $\gamma$-ray spectra of H.E.S.S. blazars
Very high-energy γ rays (VHE, E ≳ 100 GeV) propagating over cosmological distances can interact with the low-energy photons of the extragalactic background light (EBL) and produce electron-positron
Measurement of the EBL through a combined likelihood analysis of gamma-ray observations of blazars with the MAGIC telescopes
The extragalactic background light (EBL) is the radiation accumulated through the history of the Universe in the wavelength range from the ultraviolet to the far infrared. Local foregrounds make the
The extragalactic background light, the Hubble constant, and anomalies: conclusions from 20 years of TeV gamma-ray observations
Ground-based observatories have been collecting 0.2 - 20 TeV gamma rays from blazars for about twenty years. These gamma rays can experience absorption along the line of sight due to interactions
Determination of the extragalactic background light spectral energy distribution with H.E.S.S.
When very high-energy photons (VHE, E>100 GeV) propagate over cosmological distances, they interact with background light by pair production. Observations of spectral features in the VHE band of
Search for spectral features in extragalactic background light with gamma-ray telescopes
Cumulative optical / infrared emission from galaxies accumulated over cosmological time scales, the Extragalactic Background Light (EBL), could be probed by complementary techniques of direct
Extragalactic background light measurements and applications
  • A. Cooray
  • Physics, Medicine
    Royal Society Open Science
  • 2016
TLDR
This review covers the measurements related to the extragalactic background light intensity from γ-rays to radio in the electromagnetic spectrum over 20 decades in wavelength and summarizes the understanding of the spatial anisotropies and angular power spectra of intensity fluctuations.
Studying the Extragalactic Background Light with the second Cosmic Infrared Background ExpeRiment, CIBER-2
Fluctuations in the extragalactic background light trace emission from the entire history of galaxy formation, including emission from early luminous sources prior to the reionization of the
Fermi-LAT high-z active galactic nuclei and the extragalactic background light
Observations of distant gamma-ray sources are hindered by the presence of the extragalactic background light (EBL). In order to understand the physical processes that result in the observed spectrum
Normalization of the extragalactic background light from high-energy γ-ray observations
Extragalactic background light (EBL) plays an important role in cosmology since it traces the history of galaxy formation and evolution. Such diffuse radiation from near-UV to far-infrared
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The Imprint of the Extragalactic Background Light in the Gamma-Ray Spectra of Blazars
TLDR
An absorption feature seen in the combined spectra of a sample of gamma-ray blazars out to a redshift of z ∼ 1.6 allowed us to measure the EBL flux density in this frequency band and put constraints on the cosmic history of star formation.
New limits on the density of the extragalactic background light in the optical to the far-infrared from the spectra of all known TeV blazars
Aims. The extragalactic background light (EBL) in the ultraviolet to far-infrared wavelength region carries important information about galaxy and star formation history. Direct measurements are
Limits on the extragalactic background light in the Fermi era
Very high energy (VHE, energy E < 100 GeV) γ-rays from cosmological sources are attenuated due to the interaction with photons of the extragalactic background light (EBL) in the ultraviolet to
STRONG NEW CONSTRAINTS ON THE EXTRAGALACTIC BACKGROUND LIGHT IN THE NEAR- TO MID-INFRARED
Direct measurements of the extragalactic background light (EBL) in the near-IR to mid-IR waveband are extremely difficult due to an overwhelming foreground from the zodiacal light that outshines the
A low level of extragalactic background light as revealed by γ-rays from blazars
The diffuse extragalactic background light consists of the sum of the starlight emitted by galaxies through the history of the Universe, and it could also have an important contribution from the
Extragalactic optical-infrared background radiation, its time evolution and the cosmic photon-photon opacity
Context. The background radiation in the optical and the infrared cause energy loss in the propagation of high energy particles through space. In particular, TeV observations with Cherenkov
Semi-analytic modeling of the EBL and consequences for extragalactic gamma-ray spectra
Attenuation of high-energy gamma rays by pair-production with UV, optical and IR extragalactic background light (EBL) photons provides a link between the history of galaxy formation and high-energy
Detection of VHE gamma-ray emission from the distant blazar 1ES 1101-232 with HESS and broadband characterisation
TLDR
The blazar 1ES 1101-232, is the blazar with the highest confirmed redshift detected in VHE gamma-rays so far, and the data allow the construction of truly simultaneous spectral energy distributions of the source, from the optical to the VHE band.
Fermi Large Area Telescope Constraints on the Gamma-ray
The Extragalactic Background Light (EBL) includes photons with wavelengths from ultraviolet to infrared, which are effective at attenuating gamma rays with energy above ~10 GeV during propagation
Deep galaxy counts, extragalactic background light and the stellar baryon budget
We assess the constraints imposed by the observed extragalactic background light (EBL) on the cosmic history of star formation and the stellar-mass density today. The logarithmic slope of the galaxy
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