Fermi Large Area Telescope constraints on the gamma-ray opacity of the universe

A. A. Abdo; M. Ackermann; M. Ajello; A. Allafort; W. B. Atwood; L. Baldini; J. Ballet; G. Barbiellini; M. G. Baring; D. Bastieri; B. M. Baughman; K. Bechtol; R. Bellazzini; B. Berenji; P. N. Bhat; R. D. Blandford; E. D. Bloom; E. Bonamente; A. W. Borgland; A. Bouvier; T. J. Brandt; J. Bregeon; A. Brez; M. S. Briggs; M. Brigida; P. Bruel; R. Buehler; T. H. Burnett; S. Buson; G. A. Caliandro; R. A. Cameron; P. A. Caraveo; S. Carrigan; J. M. Casandjian; E. Cavazzuti; C. Cecchi; Ö Çelik; E. Charles; A. Chekhtman; A. W. Chen; C. C. Cheung; J. Chiang; S. Ciprini; R. Claus; J. Cohen-Tanugi; V. Connaughton; J. Conrad; L. Costamante; C. D. Dermer; A. De Angelis; F. De Palma; S. W. Digel; B. L. Dingus; E. Do Couto E Silva; P. S. Drell; R. Dubois; C. Favuzzi; S. J. Fegan; J. Finke; P. Fortin; Y. Fukazawa; S. Funk; P. Fusco; F. Gargano; D. Gasparrini; N. Gehrels; S. Germani; N. Giglietto; R. C. Gilmore; P. Giommi; F. Giordano; M. Giroletti; T. Glanzman; G. Godfrey; J. Granot; J. Greiner; I. A. Grenier; J. E. Grove; S. Guiriec; M. Gustafsson; D. Hadasch; M. Hayashida; E. Hays; D. Horan; R. E. Hughes; G. Jóhannesson; A. S. Johnson; R. P. Johnson; W. N. Johnson; T. Kamae; H. Katagiri; J. Kataoka; J. Knödlseder; D. Kocevski; M. Kuss; J. Lande; L. Latronico; S. H. Lee; M. Llena Garde; F. Longo; F. Loparco; B. Lott; M. N. Lovellette; P. Lubrano; A. Makeev; M. N. Mazziotta; W. McConville; J. E. McEnery; S. McGlynn; J. Mehault; P. Mészáros; P. F. Michelson; T. Mizuno; A. A. Moiseev; C. Monte; M. E. Monzani; E. Moretti; A. Morselli; I. V. Moskalenko; S. Murgia; T. Nakamori; M. Naumann-Godo; P. L. Nolan; J. P. Norris; E. Nuss; M. Ohno; T. Ohsugi; A. Okumura; N. Omodei; E. Orlando; J. F. Ormes; M. Ozaki; D. Paneque; J. H. Panetta; D. Parent; V. Pelassa; M. Pepe; M. Pesce-Rollins; F. Piron; T. A. Porter; J. R. Primack; S. Rainò; R. Rando; M. Razzano; S. Razzaque; A. Reimer; O. Reimer; L. C. Reyes; J. Ripken; S. Ritz; R. W. Romani; M. Roth; H. F.W. Sadrozinski; D. Sanchez; A. Sander; J. D. Scargle; T. L. Schalk; C. Sgrò; M. S. Shaw; E. J. Siskind; P. D. Smith; G. Spandre; P. Spinelli; F. W. Stecker; M. S. Strickman; D. J. Suson; H. Tajima; H. Takahashi; T. Takahashi; T. Tanaka; J. B. Thayer; J. G. Thayer; D. J. Thompson; L. Tibaldo; D. F. Torres; G. Tosti; A. Tramacere; Y. Uchiyama; T. L. Usher; J. Vandenbroucke; V. Vasileiou; N. Vilchez; V. Vitale; A. Von Kienlin; A. P. Waite; P. Wang; C. Wilson-Hodge; B. L. Winer; K. S. Wood; R. Yamazaki; Z. Yang; T. Ylinen; M. Ziegler

doi:10.1088/0004-637X/723/2/1082

Fermi Large Area Telescope constraints on the gamma-ray opacity of the universe

A. A. Abdo
, M. Ackermann
, M. Ajello
, A. Allafort
, W. B. Atwood
, L. Baldini
, J. Ballet
, G. Barbiellini
, M. G. Baring
, D. Bastieri
, B. M. Baughman
, K. Bechtol
, R. Bellazzini
, B. Berenji
, P. N. Bhat
, R. D. Blandford
, E. D. Bloom
, E. Bonamente
, A. W. Borgland
, A. Bouvier

T. J. Brandt, J. Bregeon, A. Brez, M. S. Briggs, M. Brigida, P. Bruel, R. Buehler, T. H. Burnett, S. Buson, G. A. Caliandro, R. A. Cameron, P. A. Caraveo, S. Carrigan, J. M. Casandjian, E. Cavazzuti, C. Cecchi, Ö Çelik, E. Charles, A. Chekhtman, A. W. Chen, C. C. Cheung, J. Chiang, S. Ciprini, R. Claus, J. Cohen-Tanugi, V. Connaughton, J. Conrad, L. Costamante, C. D. Dermer, A. De Angelis, F. De Palma, S. W. Digel, B. L. Dingus, E. Do Couto E Silva, P. S. Drell, R. Dubois, C. Favuzzi, S. J. Fegan, J. Finke, P. Fortin, Y. Fukazawa, S. Funk, P. Fusco, F. Gargano, D. Gasparrini, N. Gehrels, S. Germani, N. Giglietto, R. C. Gilmore, P. Giommi, F. Giordano, M. Giroletti, T. Glanzman, G. Godfrey, J. Granot, J. Greiner, I. A. Grenier, J. E. Grove, S. Guiriec, M. Gustafsson, D. Hadasch, M. Hayashida, E. Hays, D. Horan, R. E. Hughes, G. Jóhannesson, A. S. Johnson, R. P. Johnson, W. N. Johnson, T. Kamae, H. Katagiri, J. Kataoka, J. Knödlseder, D. Kocevski, M. Kuss, J. Lande, L. Latronico, S. H. Lee, M. Llena Garde, F. Longo, F. Loparco, B. Lott, M. N. Lovellette, P. Lubrano, A. Makeev, M. N. Mazziotta, W. McConville, J. E. McEnery, S. McGlynn, J. Mehault, P. Mészáros, P. F. Michelson, T. Mizuno, A. A. Moiseev, C. Monte, M. E. Monzani, E. Moretti, A. Morselli, I. V. Moskalenko, S. Murgia, T. Nakamori, M. Naumann-Godo, P. L. Nolan, J. P. Norris, E. Nuss, M. Ohno, T. Ohsugi, A. Okumura, N. Omodei, E. Orlando, J. F. Ormes, M. Ozaki, D. Paneque, J. H. Panetta, D. Parent, V. Pelassa, M. Pepe, M. Pesce-Rollins, F. Piron, T. A. Porter, J. R. Primack, S. Rainò, R. Rando, M. Razzano, S. Razzaque, A. Reimer, O. Reimer, L. C. Reyes, J. Ripken, S. Ritz, R. W. Romani, M. Roth, H. F.W. Sadrozinski, D. Sanchez, A. Sander, J. D. Scargle, T. L. Schalk, C. Sgrò, M. S. Shaw, E. J. Siskind, P. D. Smith, G. Spandre, P. Spinelli, F. W. Stecker, M. S. Strickman, D. J. Suson, H. Tajima, H. Takahashi, T. Takahashi, T. Tanaka, J. B. Thayer, J. G. Thayer, D. J. Thompson, L. Tibaldo, D. F. Torres, G. Tosti, A. Tramacere, Y. Uchiyama, T. L. Usher, J. Vandenbroucke, V. Vasileiou, N. Vilchez, V. Vitale, A. Von Kienlin, A. P. Waite, P. Wang, C. Wilson-Hodge, B. L. Winer, K. S. Wood, R. Yamazaki, Z. Yang, T. Ylinen, M. Ziegler

Naval Research Laboratory
National Research Council
Stanford University
University of California at Santa Cruz
National Institute for Nuclear Physics
CEA-IRFU/CNRS/Université Paris Diderot
University of Trieste
Rice University
University of Padua
Ohio State University
University of Alabama in Huntsville
University of Perugia
CNRS
Polytechnic University of Bari
École polytechnique
University of Washington
CSIC
Istituto di Astrofisica Spaziale e Fisica Cosmica di Bologna
Italian Space Agency
NASA Goddard Space Flight Center
University of Maryland Baltimore County
George Mason University
Université Montpellier 2
Stockholm University
Oskar Klein Centre
University of Udine
Los Alamos National Laboratory
Hiroshima University
University of Hertfordshire
Max Planck Institute for Extraterrestrial Physics
ICREA
Waseda University
Centre d'Etudes Nucléaires Bordeaux-Gradingnan (CENBG)
Université de Bordeaux
University of Maryland
KTH Royal Institute of Technology
Pennsylvania State University
University of Denver
JAXA Institute of Space and Astronautical Science
Innsbruck Medical University
The University of Chicago
NASA Ames Research Center
NYCB Real-Time Computing
Purdue University Northwest
Consorzio Interuniversitario per la Fisica Spaziale (CIFS)
INTEGRAL
University of Rome Tor Vergata
NASA Marshall Space Flight Center
Aoyama Gakuin University
Linnaeus University

Research output: Contribution to journal › Article › peer-review

144 Citations (Scopus)

Abstract

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 from sources at cosmological distances. This results in a redshift-and energy-dependent attenuation of the γ-ray flux of extragalactic sources such as blazars and gamma-ray bursts (GRBs). The Large Area Telescope on board Fermi detects a sample of γ-ray blazars with redshift up to z ∼ 3, and GRBs with redshift up to z ∼ 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 γ-ray flux attenuation by the EBL. We place upper limits on the?-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.

Original language	English
Pages (from-to)	1082-1096
Number of pages	15
Journal	Astrophysical Journal
Volume	723
Issue number	2
DOIs	https://doi.org/10.1088/0004-637X/723/2/1082
Publication status	Published - 10 Nov 2010
Externally published	Yes

Keywords

Diffuse radiation
Dust, extinction
Gamma rays: general

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1088/0004-637X/723/2/1082

Cite this

Abdo, A. A., Ackermann, M., Ajello, M., Allafort, A., Atwood, W. B., Baldini, L., Ballet, J., Barbiellini, G., Baring, M. G., Bastieri, D., Baughman, B. M., Bechtol, K., Bellazzini, R., Berenji, B., Bhat, P. N., Blandford, R. D., Bloom, E. D., Bonamente, E., Borgland, A. W., ... Ziegler, M. (2010). Fermi Large Area Telescope constraints on the gamma-ray opacity of the universe. Astrophysical Journal, 723(2), 1082-1096. https://doi.org/10.1088/0004-637X/723/2/1082

@article{81c8b1c77afd451192d18a51f52aef39,

title = "Fermi Large Area Telescope constraints on the gamma-ray opacity of the universe",

abstract = "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 from sources at cosmological distances. This results in a redshift-and energy-dependent attenuation of the γ-ray flux of extragalactic sources such as blazars and gamma-ray bursts (GRBs). The Large Area Telescope on board Fermi detects a sample of γ-ray blazars with redshift up to z ∼ 3, and GRBs with redshift up to z ∼ 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 γ-ray flux attenuation by the EBL. We place upper limits on the?-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.",

keywords = "Diffuse radiation, Dust, extinction, Gamma rays: general",

author = "Abdo, \{A. A.\} and M. Ackermann and M. Ajello and A. Allafort and Atwood, \{W. B.\} and L. Baldini and J. Ballet and G. Barbiellini and Baring, \{M. G.\} and D. Bastieri and Baughman, \{B. M.\} and K. Bechtol and R. Bellazzini and B. Berenji and Bhat, \{P. N.\} and Blandford, \{R. D.\} and Bloom, \{E. D.\} and E. Bonamente and Borgland, \{A. W.\} and A. Bouvier and Brandt, \{T. J.\} and J. Bregeon and A. Brez and Briggs, \{M. S.\} and M. Brigida and P. Bruel and R. Buehler and Burnett, \{T. H.\} and S. Buson and Caliandro, \{G. A.\} and Cameron, \{R. A.\} and Caraveo, \{P. A.\} and S. Carrigan and Casandjian, \{J. M.\} and E. Cavazzuti and C. Cecchi and {\"O} {\c C}elik and E. Charles and A. Chekhtman and Chen, \{A. W.\} and Cheung, \{C. C.\} and J. Chiang and S. Ciprini and R. Claus and J. Cohen-Tanugi and V. Connaughton and J. Conrad and L. Costamante and Dermer, \{C. D.\} and \{De Angelis\}, A. and \{De Palma\}, F. and Digel, \{S. W.\} and Dingus, \{B. L.\} and \{Do Couto E Silva\}, E. and Drell, \{P. S.\} and R. Dubois and C. Favuzzi and Fegan, \{S. J.\} and J. Finke and P. Fortin and Y. Fukazawa and S. Funk and P. Fusco and F. Gargano and D. Gasparrini and N. Gehrels and S. Germani and N. Giglietto and Gilmore, \{R. C.\} and P. Giommi and F. Giordano and M. Giroletti and T. Glanzman and G. Godfrey and J. Granot and J. Greiner and Grenier, \{I. A.\} and Grove, \{J. E.\} and S. Guiriec and M. Gustafsson and D. Hadasch and M. Hayashida and E. Hays and D. Horan and Hughes, \{R. E.\} and G. J{\'o}hannesson and Johnson, \{A. S.\} and Johnson, \{R. P.\} and Johnson, \{W. N.\} and T. Kamae and H. Katagiri and J. Kataoka and J. Kn{\"o}dlseder and D. Kocevski and M. Kuss and J. Lande and L. Latronico and Lee, \{S. H.\} and \{Llena Garde\}, M. and F. Longo and F. Loparco and B. Lott and Lovellette, \{M. N.\} and P. Lubrano and A. Makeev and Mazziotta, \{M. N.\} and W. McConville and McEnery, \{J. E.\} and S. McGlynn and J. Mehault and P. M{\'e}sz{\'a}ros and Michelson, \{P. F.\} and T. Mizuno and Moiseev, \{A. A.\} and C. Monte and Monzani, \{M. E.\} and E. Moretti and A. Morselli and Moskalenko, \{I. V.\} and S. Murgia and T. Nakamori and M. Naumann-Godo and Nolan, \{P. L.\} and Norris, \{J. P.\} and E. Nuss and M. Ohno and T. Ohsugi and A. Okumura and N. Omodei and E. Orlando and Ormes, \{J. F.\} and M. Ozaki and D. Paneque and Panetta, \{J. H.\} and D. Parent and V. Pelassa and M. Pepe and M. Pesce-Rollins and F. Piron and Porter, \{T. A.\} and Primack, \{J. R.\} and S. Rain{\`o} and R. Rando and M. Razzano and S. Razzaque and A. Reimer and O. Reimer and Reyes, \{L. C.\} and J. Ripken and S. Ritz and Romani, \{R. W.\} and M. Roth and Sadrozinski, \{H. F.W.\} and D. Sanchez and A. Sander and Scargle, \{J. D.\} and Schalk, \{T. L.\} and C. Sgr{\`o} and Shaw, \{M. S.\} and Siskind, \{E. J.\} and Smith, \{P. D.\} and G. Spandre and P. Spinelli and Stecker, \{F. W.\} and Strickman, \{M. S.\} and Suson, \{D. J.\} and H. Tajima and H. Takahashi and T. Takahashi and T. Tanaka and Thayer, \{J. B.\} and Thayer, \{J. G.\} and Thompson, \{D. J.\} and L. Tibaldo and Torres, \{D. F.\} and G. Tosti and A. Tramacere and Y. Uchiyama and Usher, \{T. L.\} and J. Vandenbroucke and V. Vasileiou and N. Vilchez and V. Vitale and \{Von Kienlin\}, A. and Waite, \{A. P.\} and P. Wang and C. Wilson-Hodge and Winer, \{B. L.\} and Wood, \{K. S.\} and R. Yamazaki and Z. Yang and T. Ylinen and M. Ziegler",

year = "2010",

month = nov,

day = "10",

doi = "10.1088/0004-637X/723/2/1082",

language = "English",

volume = "723",

pages = "1082--1096",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2",

}

Abdo, AA, Ackermann, M, Ajello, M, Allafort, A, Atwood, WB, Baldini, L, Ballet, J, Barbiellini, G, Baring, MG, Bastieri, D, Baughman, BM, Bechtol, K, Bellazzini, R, Berenji, B, Bhat, PN, Blandford, RD, Bloom, ED, Bonamente, E, Borgland, AW, Bouvier, A, Brandt, TJ, Bregeon, J, Brez, A, Briggs, MS, Brigida, M, Bruel, P, Buehler, R, Burnett, TH, Buson, S, Caliandro, GA, Cameron, RA, Caraveo, PA, Carrigan, S, Casandjian, JM, Cavazzuti, E, Cecchi, C, Çelik, Ö, Charles, E, Chekhtman, A, Chen, AW, Cheung, CC, Chiang, J, Ciprini, S, Claus, R, Cohen-Tanugi, J, Connaughton, V, Conrad, J, Costamante, L, Dermer, CD, De Angelis, A, De Palma, F, Digel, SW, Dingus, BL, Do Couto E Silva, E, Drell, PS, Dubois, R, Favuzzi, C, Fegan, SJ, Finke, J, Fortin, P, Fukazawa, Y, Funk, S, Fusco, P, Gargano, F, Gasparrini, D, Gehrels, N, Germani, S, Giglietto, N, Gilmore, RC, Giommi, P, Giordano, F, Giroletti, M, Glanzman, T, Godfrey, G, Granot, J, Greiner, J, Grenier, IA, Grove, JE, Guiriec, S, Gustafsson, M, Hadasch, D, Hayashida, M, Hays, E, Horan, D, Hughes, RE, Jóhannesson, G, Johnson, AS, Johnson, RP, Johnson, WN, Kamae, T, Katagiri, H, Kataoka, J, Knödlseder, J, Kocevski, D, Kuss, M, Lande, J, Latronico, L, Lee, SH, Llena Garde, M, Longo, F, Loparco, F, Lott, B, Lovellette, MN, Lubrano, P, Makeev, A, Mazziotta, MN, McConville, W, McEnery, JE, McGlynn, S, Mehault, J, Mészáros, P, Michelson, PF, Mizuno, T, Moiseev, AA, Monte, C, Monzani, ME, Moretti, E, Morselli, A, Moskalenko, IV, Murgia, S, Nakamori, T, Naumann-Godo, M, Nolan, PL, Norris, JP, Nuss, E, Ohno, M, Ohsugi, T, Okumura, A, Omodei, N, Orlando, E, Ormes, JF, Ozaki, M, Paneque, D, Panetta, JH, Parent, D, Pelassa, V, Pepe, M, Pesce-Rollins, M, Piron, F, Porter, TA, Primack, JR, Rainò, S, Rando, R, Razzano, M, Razzaque, S, Reimer, A, Reimer, O, Reyes, LC, Ripken, J, Ritz, S, Romani, RW, Roth, M, Sadrozinski, HFW, Sanchez, D, Sander, A, Scargle, JD, Schalk, TL, Sgrò, C, Shaw, MS, Siskind, EJ, Smith, PD, Spandre, G, Spinelli, P, Stecker, FW, Strickman, MS, Suson, DJ, Tajima, H, Takahashi, H, Takahashi, T, Tanaka, T, Thayer, JB, Thayer, JG, Thompson, DJ, Tibaldo, L, Torres, DF, Tosti, G, Tramacere, A, Uchiyama, Y, Usher, TL, Vandenbroucke, J, Vasileiou, V, Vilchez, N, Vitale, V, Von Kienlin, A, Waite, AP, Wang, P, Wilson-Hodge, C, Winer, BL, Wood, KS, Yamazaki, R, Yang, Z, Ylinen, T & Ziegler, M 2010, 'Fermi Large Area Telescope constraints on the gamma-ray opacity of the universe', Astrophysical Journal, vol. 723, no. 2, pp. 1082-1096. https://doi.org/10.1088/0004-637X/723/2/1082

TY - JOUR

T1 - Fermi Large Area Telescope constraints on the gamma-ray opacity of the universe

AU - Abdo, A. A.

AU - Ackermann, M.

AU - Ajello, M.

AU - Allafort, A.

AU - Atwood, W. B.

AU - Baldini, L.

AU - Ballet, J.

AU - Barbiellini, G.

AU - Baring, M. G.

AU - Bastieri, D.

AU - Baughman, B. M.

AU - Bechtol, K.

AU - Bellazzini, R.

AU - Berenji, B.

AU - Bhat, P. N.

AU - Blandford, R. D.

AU - Bloom, E. D.

AU - Bonamente, E.

AU - Borgland, A. W.

AU - Bouvier, A.

AU - Brandt, T. J.

AU - Bregeon, J.

AU - Brez, A.

AU - Briggs, M. S.

AU - Brigida, M.

AU - Bruel, P.

AU - Buehler, R.

AU - Burnett, T. H.

AU - Buson, S.

AU - Caliandro, G. A.

AU - Cameron, R. A.

AU - Caraveo, P. A.

AU - Carrigan, S.

AU - Casandjian, J. M.

AU - Cavazzuti, E.

AU - Cecchi, C.

AU - Çelik, Ö

AU - Charles, E.

AU - Chekhtman, A.

AU - Chen, A. W.

AU - Cheung, C. C.

AU - Chiang, J.

AU - Ciprini, S.

AU - Claus, R.

AU - Cohen-Tanugi, J.

AU - Connaughton, V.

AU - Conrad, J.

AU - Costamante, L.

AU - Dermer, C. D.

AU - De Angelis, A.

AU - De Palma, F.

AU - Digel, S. W.

AU - Dingus, B. L.

AU - Do Couto E Silva, E.

AU - Drell, P. S.

AU - Dubois, R.

AU - Favuzzi, C.

AU - Fegan, S. J.

AU - Finke, J.

AU - Fortin, P.

AU - Fukazawa, Y.

AU - Funk, S.

AU - Fusco, P.

AU - Gargano, F.

AU - Gasparrini, D.

AU - Gehrels, N.

AU - Germani, S.

AU - Giglietto, N.

AU - Gilmore, R. C.

AU - Giommi, P.

AU - Giordano, F.

AU - Giroletti, M.

AU - Glanzman, T.

AU - Godfrey, G.

AU - Granot, J.

AU - Greiner, J.

AU - Grenier, I. A.

AU - Grove, J. E.

AU - Guiriec, S.

AU - Gustafsson, M.

AU - Hadasch, D.

AU - Hayashida, M.

AU - Hays, E.

AU - Horan, D.

AU - Hughes, R. E.

AU - Jóhannesson, G.

AU - Johnson, A. S.

AU - Johnson, R. P.

AU - Johnson, W. N.

AU - Kamae, T.

AU - Katagiri, H.

AU - Kataoka, J.

AU - Knödlseder, J.

AU - Kocevski, D.

AU - Kuss, M.

AU - Lande, J.

AU - Latronico, L.

AU - Lee, S. H.

AU - Llena Garde, M.

AU - Longo, F.

AU - Loparco, F.

AU - Lott, B.

AU - Lovellette, M. N.

AU - Lubrano, P.

AU - Makeev, A.

AU - Mazziotta, M. N.

AU - McConville, W.

AU - McEnery, J. E.

AU - McGlynn, S.

AU - Mehault, J.

AU - Mészáros, P.

AU - Michelson, P. F.

AU - Mizuno, T.

AU - Moiseev, A. A.

AU - Monte, C.

AU - Monzani, M. E.

AU - Moretti, E.

AU - Morselli, A.

AU - Moskalenko, I. V.

AU - Murgia, S.

AU - Nakamori, T.

AU - Naumann-Godo, M.

AU - Nolan, P. L.

AU - Norris, J. P.

AU - Nuss, E.

AU - Ohno, M.

AU - Ohsugi, T.

AU - Okumura, A.

AU - Omodei, N.

AU - Orlando, E.

AU - Ormes, J. F.

AU - Ozaki, M.

AU - Paneque, D.

AU - Panetta, J. H.

AU - Parent, D.

AU - Pelassa, V.

AU - Pepe, M.

AU - Pesce-Rollins, M.

AU - Piron, F.

AU - Porter, T. A.

AU - Primack, J. R.

AU - Rainò, S.

AU - Rando, R.

AU - Razzano, M.

AU - Razzaque, S.

AU - Reimer, A.

AU - Reimer, O.

AU - Reyes, L. C.

AU - Ripken, J.

AU - Ritz, S.

AU - Romani, R. W.

AU - Roth, M.

AU - Sadrozinski, H. F.W.

AU - Sanchez, D.

AU - Sander, A.

AU - Scargle, J. D.

AU - Schalk, T. L.

AU - Sgrò, C.

AU - Shaw, M. S.

AU - Siskind, E. J.

AU - Smith, P. D.

AU - Spandre, G.

AU - Spinelli, P.

AU - Stecker, F. W.

AU - Strickman, M. S.

AU - Suson, D. J.

AU - Tajima, H.

AU - Takahashi, H.

AU - Takahashi, T.

AU - Tanaka, T.

AU - Thayer, J. B.

AU - Thayer, J. G.

AU - Thompson, D. J.

AU - Tibaldo, L.

AU - Torres, D. F.

AU - Tosti, G.

AU - Tramacere, A.

AU - Uchiyama, Y.

AU - Usher, T. L.

AU - Vandenbroucke, J.

AU - Vasileiou, V.

AU - Vilchez, N.

AU - Vitale, V.

AU - Von Kienlin, A.

AU - Waite, A. P.

AU - Wang, P.

AU - Wilson-Hodge, C.

AU - Winer, B. L.

AU - Wood, K. S.

AU - Yamazaki, R.

AU - Yang, Z.

AU - Ylinen, T.

AU - Ziegler, M.

PY - 2010/11/10

Y1 - 2010/11/10

N2 - 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 from sources at cosmological distances. This results in a redshift-and energy-dependent attenuation of the γ-ray flux of extragalactic sources such as blazars and gamma-ray bursts (GRBs). The Large Area Telescope on board Fermi detects a sample of γ-ray blazars with redshift up to z ∼ 3, and GRBs with redshift up to z ∼ 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 γ-ray flux attenuation by the EBL. We place upper limits on the?-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.

AB - 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 from sources at cosmological distances. This results in a redshift-and energy-dependent attenuation of the γ-ray flux of extragalactic sources such as blazars and gamma-ray bursts (GRBs). The Large Area Telescope on board Fermi detects a sample of γ-ray blazars with redshift up to z ∼ 3, and GRBs with redshift up to z ∼ 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 γ-ray flux attenuation by the EBL. We place upper limits on the?-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.

KW - Diffuse radiation

KW - Dust, extinction

KW - Gamma rays: general

UR - https://www.scopus.com/pages/publications/78650101378

U2 - 10.1088/0004-637X/723/2/1082

DO - 10.1088/0004-637X/723/2/1082

M3 - Article

AN - SCOPUS:78650101378

SN - 0004-637X

VL - 723

SP - 1082

EP - 1096

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

ER -

Fermi Large Area Telescope constraints on the gamma-ray opacity of the universe

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