The Extragalactic Background Light and the Gamma-ray Opacity of the Universe

Abstract

The extragalactic background light (EBL) is one of the fundamental observational quantities in cosmology. All energy releases from resolved and unresolved extragalactic sources, and the light from any truly diffuse background, excluding the cosmic microwave background (CMB), contribute to its intensity and spectral energy distribution. It therefore plays a crucial role in cosmological tests for the formation and evolution of stellar objects and galaxies, and for setting limits on exotic energy releases in the universe. The EBL also plays an important role in the propagation of very high energy gamma-rays which are attenuated en route to Earth by pair producing gamma-gamma interactions with the EBL and CMB. The EBL affects the spectrum of the sources, predominantly blazars, in the ~10 GeV to 10 TeV energy regime. Knowledge of the EBL intensity and spectrum will allow the determination of the intrinsic blazar spectrum in a crucial energy regime that can be used to test particle acceleration mechanisms and VHE gamma-ray production models. Conversely, knowledge of the intrinsic gamma-ray spectrum and the detection of blazars at increasingly higher redshifts will set strong limits on the EBL and its evolution. This paper reviews the latest developments in the determination of the EBL and its impact on the current understanding of the origin and production mechanisms of gamma-rays in blazars, and on energy releases in the universe. The review concludes with a summary and future directions in Cherenkov Telescope Array techniques and in infrared ground-based and space observatories that will greatly improve our knowledge of the EBL and the origin and production of very high energy gamma-rays.

To be published in the special Cherenkov Telescope Array issue of Astroparticle Physics. 55 pages including 15 figures (excluding 42 pages of references)

References in corpus (40)

• The James Webb Space Telescope
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Data Processing, Sky Maps, and Basic Results
• The Spectrum of the Isotropic Diffuse Gamma-Ray Emission Derived From First-Year Fermi Large Area Telescope Data
• The Cosmic Infrared Background Resolved by Spitzer. Contributions of Mid-Infrared Galaxies to the Far-Infrared Background
• MAGIC discovery of VHE Emission from the FSRQ PKS 1222+21
• Fast variability of TeV gamma-rays from the radio galaxy M 87
• Teraelectronvolt Astronomy
• A connection between star formation activity and cosmic rays in the starburst galaxy M 82
• New constraints on the Mid-IR EBL from the HESS discovery of VHE gamma rays from 1ES 0229+200
• The Diffuse Supernova Neutrino Background
• The Diffuse Supernova Neutrino Background is detectable in Super-Kamiokande
• Multiwavelength Observations of Markarian 421 in March 2001: an Unprecedented View on the X-ray/TeV Correlated Variability
• Detection of Gamma Rays From a Starburst Galaxy
• 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
• Hints of the existence of Axion-Like-Particles from the gamma-ray spectra of cosmological sources
• Spitzer Deep and Wide Legacy Mid- and Far-Infrared Number Counts and Lower Limits of Cosmic Infrared Background
• Formation of hard VHE gamma-ray spectra of blazars due to internal photon-photon absorption
• Blazar Gamma-Rays, Shock Acceleration, and the Extragalactic Background Light
• Spitzer 70-micron Source Counts in GOODS-North
• Discovery of very high energy gamma-ray emission from the low-frequency peaked BL Lacertae object BL Lacertae
• Hard TeV spectra of blazars and the constraints to the IR intergalactic background
• Discovery of Very High Energy gamma-rays from 1ES 1011+496 at z=0.212
• The Hard VHE Gamma-ray Emission in High-Redshift TeV Blazars: Comptonization of Cosmic Microwave Background Radiation in an Extended Jet?
• A new model for infrared and submillimetre counts
• Correlated Anisotropies in the Cosmic Far-Infrared Background Detected by MIPS/Spitzer: Constraint on the Bias
• Submillimeter Number Counts at 250, 350 and 500 microns in BLAST data
• The Resolved NIR Extragalactic Background
• The Resolved Near-Infrared Extragalactic Background
• Evaluating and Improving Semi-analytic modelling of Dust in Galaxies based on Radiative Transfer Calculations
• DIRBE Minus 2MASS: Confirming the CIRB in 40 New Regions at 2.2 and 3.5 Microns
• Reconstructing the γ-ray Photon Optical Depth of the Universe to z~4 from Multiwavelength Galaxy Survey Data
• Probing the 3.6 Micron CIRB with Spitzer in 3 DIRBE Dark Spots
• Does the AGN Unified Model Evolve with Redshift? Utilizing the X-ray Background to Predict the Mid-Infrared Emission of AGN
• First stars and the extragalactic background light: How recent gamma-ray observations constrain the early universe
• Upper Limit on the Cosmological Gamma-ray Background
• Constraints to Energy Spectra of Blazars based on Recent EBL Limits from Galaxy Counts
• A novel method for measuring the extragalactic background light: Fermi application to the lobes of Fornax A
• Ultra deep AKARI observations of Abell 2218: resolving the 15 um extragalactic background light
• Determination of the Far-Infrared Cosmic Background Using COBE/DIRBE and WHAM Data
• On the redshift of the blazar PKS0447-439

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