The imprint of the extragalactic background light in the gamma-ray spectra of blazars

Markus Ackermann; M. Ajello; A. Allafort; P. Schady; Luca Baldini; Jean Ballet; Guido Barbiellini; D. Bastieri; R. Bellazzini; R. D. Blandford; E. D. Bloom; A. W. Borgland; E. Bottacini; A. Bouvier; J. Bregeon; M. Brigida; Pascal Bruel; R. Buehler; S. Buson; G. A. Caliandro; R. A. Cameron; P. A. Caraveo; E. Cavazzuti; C. Cecchi; E. Charles; R. C. G. Chaves; A. Chekhtman; C. C. Cheung; J. Chiang; G. Chiaro; S. Ciprini; R. Claus; J. Cohen-Tanugi; J. Conrad; S. Cutini; F. d'Ammando; F. de Palma; C. D. Dermer; S. W. Digel; E. Do Couto E Silva; A. Domínguez; P. S. Drell; A. Drlica-Wagner; C. Favuzzi; S. J. Fegan; W. B. Focke; A. Franckowiak; Y. Fukazawa; S. Funk; P. Fusco; F. Gargano; D. Gasparrini; N. Gehrels; S. Germani; N. Giglietto; F. Giordano; M. Giroletti; T. Glanzman; G. Godfrey; I. A. Grenier; J. E. Grove; S. Guiriec; M. Gustafsson; D. Hadasch; M. Hayashida; E. Hays; M. S. Jackson; T. Jogler; J. Kataoka; Jürgen Knödlseder; M. Kuss; J. Lande; S. Larsson; L. Latronico; F. Longo; F. Loparco; M. N. Lovellette; P. Lubrano; M. N. Mazziotta; J. E. Mcenery; J. Mehault; P. F. Michelson; T. Mizuno; C. Monte; M. E. Monzani; A. Morselli; I. V. Moskalenko; S. Murgia; A. Tramacere; E. Nuss; J. Greiner; M. Ohno; T. Ohsugi; N. Omodei; M. Orienti; E. Orlando; J. F. Ormes; D. Paneque; J. S. Perkins; M. Pesce-Rollins; F. Piron; G. Pivato; T.A. Porter; S. Rainò; R. Rando; M. Razzano; S. Razzaque; A. Reimer; O. Reimer; L. C. Reyes; S. Ritz; A. Rau; C. Romoli; M. Roth; M. Sánchez-Conde; D.A. Sanchez; J. D. Scargle; C. Sgrò; E. J. Siskind; G. Spandre; P. Spinelli; Łukasz Stawarz; D. J. Suson; H. Takahashi; T. Tanaka; J. G. Thayer; D. J. Thompson; L. Tibaldo; M. Tinivella; D. F. Torres; G. Tosti; E. Troja; T. L. Usher; J. Vandenbroucke; V. Vasileiou; G. Vianello; V. Vitale; A. P. Waite; B. L. Winer; K. S. Wood; M. Wood

doi:10.1126/science.1227160

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The imprint of the extragalactic background light in the gamma-ray spectra of blazars

Markus Ackermann, M. Ajello, A. Allafort, P. Schady, Luca Baldini, Jean Ballet, Guido Barbiellini, D. Bastieri, R. Bellazzini, R. D. Blandford, …

Science, Vol.338(6111), pp.1190-1192

2012

DOI: https://doi.org/10.1126/science.1227160

Abstract

The light emitted by stars and accreting compact objects through the history of the universe is encoded in the intensity of the extragalactic background light (EBL). Knowledge of the EBL is important to understand the nature of star formation and galaxy evolution, but direct measurements of the EBL are limited by galactic and other foreground emissions. Here, we report an absorption feature seen in the combined spectra of a sample of gamma-ray blazars out to a redshift of z $\sim$ 1.6. This feature is caused by attenuation of gamma rays by the EBL at optical to ultraviolet frequencies and allowed us to measure the EBL flux density in this frequency band

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Title: The imprint of the extragalactic background light in the gamma-ray spectra of blazars
Creators - without role: Markus Ackermann - Deutsches Elektronen-Synchrotron DESY
M. Ajello - Kavli Institute for Particle Astrophysics and Cosmology
A. Allafort - Kavli Institute for Particle Astrophysics and Cosmology
P. Schady - Max Planck Institute for Extraterrestrial Physics
Luca Baldini - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
Jean Ballet - Astrophysique, Instrumentation et Modélisation
Guido Barbiellini - University of Trieste
D. Bastieri - University of Padua
R. Bellazzini - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
R. D. Blandford - SLAC National Accelerator Laboratory
E. D. Bloom - SLAC National Accelerator Laboratory
A. W. Borgland - SLAC National Accelerator Laboratory
E. Bottacini - Kavli Institute for Particle Astrophysics and Cosmology
A. Bouvier - University of California, Santa Cruz
J. Bregeon - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
M. Brigida - Polytechnic University of Bari
Pascal Bruel - École Polytechnique
R. Buehler - Kavli Institute for Particle Astrophysics and Cosmology
S. Buson - Istituto Nazionale di Fisica Nucleare, Sezione di Padova
G. A. Caliandro - Institut de Ciencies de l'Espai [Barcelona]
R. A. Cameron - SLAC National Accelerator Laboratory
P. A. Caraveo - Istituto di Astrofisica Spaziale e Fisica Cosmica di Milano
E. Cavazzuti - Agenzia Spaziale Italiana
C. Cecchi - University of Perugia
E. Charles - Kavli Institute for Particle Astrophysics and Cosmology
R. C. G. Chaves - Astrophysique Interprétation Modélisation
A. Chekhtman - George Mason University
C. C. Cheung - Naval Research Laboratory
J. Chiang - Kavli Institute for Particle Astrophysics and Cosmology
G. Chiaro - University of Padua
S. Ciprini - University of Perugia
R. Claus - Kavli Institute for Particle Astrophysics and Cosmology
J. Cohen-Tanugi - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
J. Conrad - Stockholm University
S. Cutini - Agenzia Spaziale Italiana
F. d'Ammando - Istituto Nazionale di Fisica Nucleare, Sezione di Perugia
F. de Palma - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
C. D. Dermer - Space Science Division [Washington]
S. W. Digel - SLAC National Accelerator Laboratory
E. Do Couto E Silva - SLAC National Accelerator Laboratory
A. Domínguez - University of California, Santa Cruz
P. S. Drell - SLAC National Accelerator Laboratory
A. Drlica-Wagner - Stanford University
C. Favuzzi - Polytechnic University of Bari
S. J. Fegan - Laboratoire Leprince-Ringuet
W. B. Focke - SLAC National Accelerator Laboratory
A. Franckowiak - Kavli Institute for Particle Astrophysics and Cosmology
Y. Fukazawa - Hiroshima University
S. Funk - Stanford University
P. Fusco - Polytechnic University of Bari
F. Gargano - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
D. Gasparrini - Agenzia Spaziale Italiana
N. Gehrels - Goddard Space Flight Center
S. Germani - University of Perugia
N. Giglietto - Polytechnic University of Bari
F. Giordano - Polytechnic University of Bari
M. Giroletti - Istituto di Radioastronomia di Bologna
T. Glanzman - Stanford University
G. Godfrey - Kavli Institute for Particle Astrophysics and Cosmology
I. A. Grenier - Astrophysique Interprétation Modélisation
J. E. Grove - Space Science Division [Washington]
S. Guiriec - Goddard Space Flight Center
M. Gustafsson - Istituto Nazionale di Fisica Nucleare, Sezione di Padova
D. Hadasch - Institute of Space Sciences
M. Hayashida - Stanford University
E. Hays - Goddard Space Flight Center
M. S. Jackson - Department of Fusion Plasma Physics [Stockholm]
T. Jogler - Stanford University
J. Kataoka - Waseda University
Jürgen Knödlseder - Institut de Recherche en Astrophysique et Planétologie
M. Kuss - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
J. Lande - Kavli Institute for Particle Astrophysics and Cosmology
S. Larsson - Stockholm University
L. Latronico - Istituto Nazionale di Fisica Nucleare, Sezione di Torino
F. Longo - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
F. Loparco - Polytechnic University of Bari
M. N. Lovellette - Space Science Division [Washington]
P. Lubrano - University of Perugia
M. N. Mazziotta - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
J. E. Mcenery - Goddard Space Flight Center
J. Mehault - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
P. F. Michelson - SLAC National Accelerator Laboratory
T. Mizuno - Hiroshima University
C. Monte - Polytechnic University of Bari
M. E. Monzani - SLAC National Accelerator Laboratory
A. Morselli - Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata
I. V. Moskalenko - SLAC National Accelerator Laboratory
S. Murgia - SLAC National Accelerator Laboratory
A. Tramacere - Swiss Data Science Center
E. Nuss - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
J. Greiner - Max Planck Institute for Extraterrestrial Physics
M. Ohno - Institute of Space and Astronautical Science
T. Ohsugi - Hiroshima University
N. Omodei - Kavli Institute for Particle Astrophysics and Cosmology
M. Orienti - Istituto di Radioastronomia di Bologna
E. Orlando - Stanford University
J. F. Ormes - Department of Physics and Astronomy [Denver]
D. Paneque - Kavli Institute for Particle Astrophysics and Cosmology
J. S. Perkins - Goddard Space Flight Center
M. Pesce-Rollins - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
F. Piron - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
G. Pivato - University of Padua
T.A. Porter - University of California, Santa Cruz
S. Rainò - Polytechnic University of Bari
R. Rando - Istituto Nazionale di Fisica Nucleare, Sezione di Padova
M. Razzano - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
S. Razzaque - George Mason University
A. Reimer - SLAC National Accelerator Laboratory
O. Reimer - Kavli Institute for Particle Astrophysics and Cosmology
L. C. Reyes - California Polytechnic State University [San Luis Obispo]
S. Ritz - University of California, Santa Cruz
A. Rau - Max Planck Institute for Extraterrestrial Physics
C. Romoli - University of Padua
M. Roth - University of Washington
M. Sánchez-Conde - Kavli Institute for Particle Astrophysics and Cosmology
D.A. Sanchez - Max Planck Institute for Nuclear Physics
J. D. Scargle - Ames Research Center
C. Sgrò - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
E. J. Siskind - NYCB Real-Time Computing Inc. [Lattingtown]
G. Spandre - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
P. Spinelli - Polytechnic University of Bari
Łukasz Stawarz - Institute of Space and Astronautical Science
D. J. Suson - Purdue University [West Lafayette]
H. Takahashi - Hiroshima University
T. Tanaka - Kavli Institute for Particle Astrophysics and Cosmology
J. G. Thayer - SLAC National Accelerator Laboratory
D. J. Thompson - Goddard Space Flight Center
L. Tibaldo - Istituto Nazionale di Fisica Nucleare, Sezione di Padova
M. Tinivella - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
D. F. Torres - Institut de Ciencies de l'Espai [Barcelona]
G. Tosti - Istituto Nazionale di Fisica Nucleare, Sezione di Perugia
E. Troja - Goddard Space Flight Center
T. L. Usher - SLAC National Accelerator Laboratory
J. Vandenbroucke - Stanford University
V. Vasileiou - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
G. Vianello - Kavli Institute for Particle Astrophysics and Cosmology
V. Vitale - Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata
A. P. Waite - SLAC National Accelerator Laboratory
B. L. Winer - The Ohio State University
K. S. Wood - Naval Research Laboratory
M. Wood - Kavli Institute for Particle Astrophysics and Cosmology
Publication Details: Science, Vol.338(6111), pp.1190-1192
Identifiers: 9940765909311
Academic Unit: Laboratoire Univers et Particules de Montpellier - LUPM
Language: English
Resource Type: Journal article
Local Fields: cea-00863061