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Title: FERMI LARGE AREA TELESCOPE CONSTRAINTS ON THE GAMMA-RAY OPACITY OF THE UNIVERSE

Journal Article · · Astrophysical Journal
 [1]; ; ; ; ; ; ; ; ;  [2];  [3]; ;  [4];  [5];  [6];  [7];  [8];  [9];  [10];  [11]
  1. Space Science Division, Naval Research Laboratory, Washington, DC 20375 (United States)
  2. W. W. Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics and SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94305 (United States)
  3. Santa Cruz Institute for Particle Physics, Department of Physics and Department of Astronomy and Astrophysics, University of California at Santa Cruz, Santa Cruz, CA 95064 (United States)
  4. Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, I-56127 Pisa (Italy)
  5. Laboratoire AIM, CEA-IRFU/CNRS/Universite Paris Diderot, Service d'Astrophysique, CEA Saclay, 91191 Gif sur Yvette (France)
  6. Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, I-34127 Trieste (Italy)
  7. Rice University, Department of Physics and Astronomy, MS-108, P. O. Box 1892, Houston, TX 77251 (United States)
  8. Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131 Padova (Italy)
  9. Department of Physics, Center for Cosmology and Astro-Particle Physics, Ohio State University, Columbus, OH 43210 (United States)
  10. Center for Space Plasma and Aeronomic Research (CSPAR), University of Alabama in Huntsville, Huntsville, AL 35899 (United States)
  11. Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, I-06123 Perugia (Italy)

The extragalactic background light (EBL) includes photons with wavelengths from ultraviolet to infrared, which are effective at attenuating gamma rays with energy above {approx}10 GeV during propagation from sources at cosmological distances. This results in a redshift- and energy-dependent attenuation of the {gamma}-ray flux of extragalactic sources such as blazars and gamma-ray bursts (GRBs). The Large Area Telescope on board Fermi detects a sample of {gamma}-ray blazars with redshift up to z {approx} 3, and GRBs with redshift up to z {approx} 4.3. Using photons above 10 GeV collected by Fermi over more than one year of observations for these sources, we investigate the effect of {gamma}-ray flux attenuation by the EBL. We place upper limits on the {gamma}-ray opacity of the universe at various energies and redshifts and compare this with predictions from well-known EBL models. We find that an EBL intensity in the optical-ultraviolet wavelengths as great as predicted by the 'baseline' model of Stecker et al. can be ruled out with high confidence.

OSTI ID:
21471275
Journal Information:
Astrophysical Journal, Vol. 723, Issue 2; Other Information: DOI: 10.1088/0004-637X/723/2/1082; ISSN 0004-637X
Country of Publication:
United States
Language:
English

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ROLE OF LINE-OF-SIGHT COSMIC-RAY INTERACTIONS IN FORMING THE SPECTRA OF DISTANT BLAZARS IN TeV GAMMA RAYS AND HIGH-ENERGY NEUTRINOS journal March 2011
THE SECOND CATALOG OF ACTIVE GALACTIC NUCLEI DETECTED BY THE FERMI LARGE AREA TELESCOPE journal December 2011
Extragalactic Background Light from Hierarchical Galaxy Formation: Gamma-Ray Attenuation up to the Epoch of Cosmic Reionization and the First Stars journal April 2013
THE IMPORTANCE OF JET BENDING IN GAMMA-RAY AGNs—REVISITED journal March 2014
RELATIVISTIC PAIR BEAMS FROM TeV BLAZARS: A SOURCE OF REPROCESSED GeV EMISSION RATHER THAN INTERGALACTIC HEATING journal May 2014
Constraints on the Intergalactic Magnetic Field with Gamma-Ray Observations of Blazars journal November 2015
The relationship between the radio core-dominance parameter and spectral index in different classes of extragalactic radio sources (II) journal May 2019
Prompt X-Ray and Optical Excess Emission due to Hadronic Cascades in Gamma-Ray Bursts journal November 2010
Transparency of the Universe to gamma-rays journal May 2013
Fermi-LAT high-z active galactic nuclei and the extragalactic background light journal May 2017
The NuSTAR view on hard-TeV BL Lacs journal May 2018
Measurement of the extragalactic background light using MAGIC and Fermi-LAT gamma-ray observations of blazars up to z = 1 journal April 2019
Semi-analytic modelling of the extragalactic background light and consequences for extragalactic gamma-ray spectra: Modelling of the EBL and gamma-ray spectra journal April 2012
The Imprint of the Extragalactic Background Light in the Gamma-Ray Spectra of Blazars journal November 2012
Indirect Searches for Decaying dark Matter journal October 2013
Fast γ-ray Variability: A Common Feature and Powerful Probe for Jetted AGNs journal July 2018
An Empirical Determination of the Intergalactic Background Light from uv to fir Wavelengths Using fir deep Galaxy Surveys and the Gamma-Ray Opacity of the Universe journal August 2016
New High- z BL Lacs Using the Photometric Method with Swift and SARA journal May 2018
NuSTAR Observations and Multiwavelength Modeling of the High-redshift BL Lacertae Object 4FGL J2146.5-1344 journal January 2020
3FHL: The Third Catalog of Hard Fermi -LAT Sources journal September 2017
Fermi -LAT Detection of a Transient γ -Ray Source in the Direction of a Distant Blazar B3 1428+422 at z = 4.72 journal September 2018
Measurement of the extragalactic background light using MAGIC and Fermi-LAT gamma-ray observations of blazars up to z = 1 text January 2019
3FHL: The Third Catalog of Hard Fermi -LAT Sources text January 2017
Limits on the extragalactic background light in the Fermi era
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  • HIGH ENERGY GAMMA-RAY ASTRONOMY: 5th International Meeting on High Energy Gamma-Ray Astronomy, AIP Conference Proceedings https://doi.org/10.1063/1.4772332
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Role of line-of-sight cosmic ray interactions in forming the spectra of distant blazars in TeV gamma rays and high-energy neutrinos text January 2010
Limits on the extragalactic background light in the Fermi era text January 2012
Extragalactic Background Light from Hierarchical Galaxy Formation: Gamma-ray Attenuation up to the Epoch of Cosmic Reionization and the First Stars text January 2012
Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S text January 2012
Transparency of the Universe to gamma rays text January 2013
Relativistic Pair Beams from TeV Blazars: A Source of Reprocessed GeV Emission rather than IGM Heating text January 2013
3FHL: The Third Catalog of Hard Fermi-LAT Sources text January 2017
The NuSTAR view on Hard-TeV BL Lacs text January 2017
The relationship between the radio core-dominance parameter and spectral index in different classes of extragalactic radio sources (II) text January 2018
NuSTAR Observations and multi-wavelength modeling of the high-redshift BL Lac Object 4FGL J2146.5-1344 text January 2020