A low level of extragalactic background light as revealed by γ-rays from blazars

@article{Aharonian2006ALL,
  title={A low level of extragalactic background light as revealed by $\gamma$-rays from blazars},
  author={Felix Aharonian and A. G. Akhperjanian and A. R. Bazer-Bachi and Matthias Beilicke and W. Benbow and David Berge and Konrad Bernl{\"o}hr and Catherine Boisson and O. Bolz and V. Borrel and Ilana M. Braun and Frank Breitling and A. M. Brown and Paula M Chadwick and L. M. Chounet and R. Cornils and L Costamante and B. Degrange and Hugh Dickinson and Arache Djannati-Ata{\"i} and Luke O'c. Drury and Guillaume Dubus and D. Emmanoulopoulos and P. Espigat and Fabrice Feinstein and Gilles Fontaine and Yael Fuchs and Stefan Funk and Yves A. Gallant and Berrie Giebels and Stefan Gillessen and J. F. Glicenstein and Philippe Goret and C. Hadjichristidis and Dominik Hauser and Marcus Hauser and G{\"o}tz Heinzelmann and Gilles Henri and German Hermann and J. A. Hinton and W. Hofmann and M. Holleran and Dieter Horns and A. Jacholkowska and Ocker C. de Jager and B. Kh{\'e}lifi and Stephanie Klages and Nu. Komin and Alexander K. Konopelko and I. J. Latham and Roland Le Gallou and Anne Lemi{\`e}re and M. Lemoine-Goumard and Nicolas Leroy and Thomas Lohse and J. M. Martin and Olivier Martineau-Huynh and Alexandre Marcowith and Conor Masterson and T. J. L. Mccomb and Mathieu de Naurois and S. J. Nolan and Aristeidis Noutsos and K. J. Orford and J. L. Osborne and Mohamed Ouchrif and Mike Panter and Guy B. Pelletier and Santiago Pita and Gerd P{\"u}hlhofer and M. Punch and B. C. Raubenheimer and Martin Raue and Julie Raux and Stephen Mark Rayner and A. Reimer and O. Reimer and Joachim Ripken and L. Rob and Lo{\"i}c Rolland and Gavin Rowell and Vardan Sahakian and Ludovic Sauge and Stefan Schlenker and Reinhard Schlickeiser and C. U. Schuster and U. Schwanke and Mark Siewert and H'elene Sol and D. Spangler and Riaan Steenkamp and Christian M Stegmann and J-P. Tavernet and R. Terrier and Claude G. Th{\'e}oret and Martin Tluczykont and Christopher van Eldik and Georges Vasileiadis and Christo Venter and Pascal Vincent and H. J. V{\"o}lk and S. J. Wagner},
  journal={Nature},
  year={2006},
  volume={440},
  pages={1018-1021}
}
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 ‘first stars’, which may have formed before galaxy formation began. Direct measurements are difficult and not yet conclusive, owing to the large uncertainties caused by the bright foreground emission associated with zodiacal light. An alternative approach is to study the absorption features imprinted on… 

Figures and Tables from this paper

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.
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
Low-Resolution Spectrum of the Extragalactic Background Light with the AKARI InfraRed Camera
The Extragalactic Background Light (EBL) as integrated light from outside of our Galaxy includes information about the early universe and the Dark Ages. We analyzed spectral data of the astrophysical
New Limits on the Density of the Extragalactic Background Light from TeV Blazars
The star and galaxy formation history has left an imprint on the diffuse extragalactic radiation field in the ultraviolet to infrared wavelength regime. In the spectral energy distribution two
The Extragalactic Background Light: The Emission from All Stars and Black Holes
Intergalactic space is filled with the light produced by all the stars and accreting compact objects that populated the observable Universe throughout the whole cosmic history. This relic cosmic
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
An observational determination of the evolving extragalactic background light from the multiwavelength HST/CANDELS survey in the Fermi and CTA era
The diffuse extragalactic background light (EBL) is formed by ultraviolet (UV), optical, and infrared (IR) photons mainly produced by star formation processes over the history of the Universe and
Very high-energy constraints on the infrared extragalactic background light
Context. Measurements of the extragalactic background light (EBL) are a fundamental source of information on the collective emission of cosmic sources. Aims. At infrared wavelengths, however, these
Gamma-ray Spectra and the Extragalactic Background Light
Attenuation of very 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
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
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 48 REFERENCES
The First Detections of the Extragalactic Background Light at 3000, 5500, and 8000 . I. Results
We present the first detection of the mean flux of the optical extragalactic background light (EBL) at 3000, 5500, and 8000 A. Diffuse foreground flux at these wavelengths comes from terrestrial
The Near-Infrared Background: Interplanetary Dust or Primordial Stars?
The intensity of the diffuse ~1-4 μm sky emission from which solar system and Galactic foregrounds have been subtracted is in excess of that expected from energy released by galaxies and stars that
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
Infrared Telescope in Space Observations of the Near-Infrared Extragalactic Background Light
We have searched for near-infrared extragalactic background light (EBL) in the data from the Near-Infrared Spectrometer (NIRS) on the Infrared Telescope in Space (IRTS). After subtracting the
Diffuse Extragalactic Background Light versus Deep Galaxy Counts in the Subaru Deep Field: Missing Light in the Universe?
Deep optical and near-infrared galaxy counts are utilized to estimate the extragalactic background light (EBL) coming from normal galactic light in the universe. Although the slope of the
THE FIRST DETECTIONS OF THE EXTRAGALACTIC BACKGROUND LIGHT AT 3000, 5500, AND 8000 A ˚ . II. MEASUREMENT OF FOREGROUND ZODIACAL LIGHT
We present a measurement of the absolute surface brightness of the zodiacal light (3900-5100 A) toward a fixed extragalactic target at high ecliptic latitude based on moderate-resolution (~1.3 A
Probing galaxy formation with high energy gamma-rays
We discuss how measurements of the absorption of γ-rays from GeV to TeV energies via pair production on the extragalactic background light (EBL) can probe important issues in galaxy formation. We use
A Tentative Detection of the Cosmic Infrared Background at 3.5 μm from COBE/DIRBE Observations
Foreground emission and scattered light from interplanetary dust (IPD) particles and emission from Galactic stellar sources are the greatest obstacles to determining the cosmic infrared background
Cosmic infrared background and early galaxy evolution
The cosmic infrared background (CIB) reflects the sum total of galactic luminosities integrated over the entire age of the universe. From its measurement the red-shifted starlight and dust-absorbed
Observational Gamma-ray Cosmology
We discuss how measurements of the absorption of gamma‐rays from GeV to TeV energies via pair production on the extragalactic background light (EBL) can probe important issues in galaxy formation.
...
1
2
3
4
5
...