2024-03-29T01:36:21Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/412192020-04-08T10:06:50Zcom_10261_45com_10261_4col_10261_298
2011-10-17T11:03:12Z
urn:hdl:10261/41219
Fermi Large Area Telescope Constraints on the Gamma-ray Opacity of the Universe
Abdo, Aous A.
Ackermann, Markus
Ajello, Marco
Allafort, Alice
Atwood, W. Bill
Baldini, Luca
Ballet, Jean
Barbiellini, Guido
Baring, Matthew G.
Bastieri, Denis
Baughman, Brian M.
Smith, Patrick D.
Spandre, Gloria
Spinelli, Paolo
Stecker, Floyd William
Strickman, Mark Samuel
Suson, Daniel Jeffrey
Tajima, Hiro
Takahashi, Hiromitsu
Takahashi, Tadayuki
Usher, Tracy L.
Grove, J. Eric
Tanaka, Takaaki
Wood, Kent S.
Bonamente, Emanuele
Yammouni, Robert
Johnson, W. Neil
Vandenbroucke, Justin
Borgland, Anders W.
Vasileiou, Vlasios
Bouvier, Aurelien
Loparco, Francesco
Guiriec, Sylvain
Yang, Zhaoyu
Ylinen, Tomi
Ziegler, Marcus
Brandt, Theresa J.
Bregeon, Jean
Kamae, Tuneyoshi
Brez, Alessandro
Briggs, M. S.
Brigida, Monica
Bruel, Philippe
Gustafsson, Michael
Buehler, Rolf
Lott, Benoit
Burnett, Thompson H.
Buson, Sara
Caliandro, Giuseppe Andrea
Cameron, Robert A.
Katagiri, Hideaki
Caraveo, Patrizia A.
Carrigan, Svenja
Casandjian, Jean-Marc
Hadasch, Daniela
Cavazzuti, Elisabetta
Cecchi, Claudia
Çelik, Özlem
Lovellette, Michael N.
Charles, Eric
Chekhtman, Alexandre
Chen, Andrew W.
Kataoka, Jun
Cheung, C. C. Teddy
Chiang, James
Hayashida, Masaaki
Ciprini, Stefano
Claus, Rachel
Cohen-Tanugi, Johan
Connaughton, Valerie
Conrad, Jan
Lubrano, Pasquale
Costamante, Luigi
Dermer, Charles Dennison
Knödlseder, Jürgen
Angelis, Alessandro de
Hays, Elizabeth
Palma, Francesco de
Digel, Seth W.
Dingus, Brenda L.
Couto e Silva, Eduardo do
Drell, Persis S.
Dubois, Richard
Favuzzi, Cecilia
Makeev, Andrey
Fegan, Stephen, J.
Kocevski, Daniel
Horan, Deirdre
Finke, Justin
Fortin, Pascal
Fukazawa, Yasushi
Funk, Stefan
Fusco, Piergiorgio
Gargano, Fabio
Gasparrini, Dario
Gehrels, Neil
Germani, Stefano
Mazziotta, Mario Nicola
Hughes, Richard E.
Kuss, M.
Giglietto, Nicola
Gilmore, Rudy C.
Giommi, Paolo
Giordano, Francesco
Giroletti, Marcello
Glanzman, Tom
Godfrey, Gary
Granot, Jonathan
Greiner, Jochen
Johannesson, Gueolaugur
Grenier, Isabelle A.
Lande, Joshua
McConville, William
Latronico, Luca
Thayer, Jana B.
Johnson, A. S.
McEnery, Julie E.
Johnson, Robert P.
McGlynn, Sinead
Vilchez, Nicolás
Lee, Shiu-Hang
Llena-Garde, Maja
Longo, Francesco
Mehault, Jeremie
Bechtol, Keith
Thayer, John Gregg
Mészáros, Peter
Michelson, Peter F.
Mizuno, Takafumi
Moiseev, Alex A.
Monte, Claudia
Vitale, Vincenzo
Monzani, Maria Elena
Moretti, Elena
Morselli, Aldo
Moskalenko, Igor V.
Thompson, David J.
Murgia, Simona
Bellazzini, Ronaldo
Nakamori, Takeshi
Naumann-Godo, Melitta
Nolan, Pat L.
Norris, Jay P.
Kienlin, Andreas von
Nuss, Eric
Ohno, Masanori
Ohsugi, Takashi
Tibaldo, Luigi
Okumura, Akira
Omodei, Nicola
Orlando, Elena
Berenji, Bijan
Ormes, Jonathan F.
Ozaki, Masanobu
Paneque, David
Waite, Anthony P.
Panetta, Jim H.
Parent, D.
Torres, Diego F.
Pelassa, Véronique
Pepe, Monica
Pesce-Rollins, Melissa
Piron, Frédéric
Porter, Troy A.
Bhat, P. Narayana
Primack, Joel R.
Rainò, Silvia
Wang, Ping
Rando, Riccardo
Tosti, Gino
Razzano, Massimiliano
Razzaque, Soebur
Reimer, Anita
Reimer, Olaf
Reyes, Luis C.
Ripken, Joachim
Ritz, Steven
Blandford, Roger D.
Romani, Roger W.
Wilson-Hodge, Colleen
Tramacere, Andrea
Roth, Marshall
Sadrozinski, Hartmut F. W.
Sánchez, David
Sander, Aaron
Scargle, Jeffrey D.
Schalk, Terry L.
Sgrò, Carmelo
Shaw, Michael S.
Siskind, Eric J.
Bloom, Elliott D.
Uchiyama, Yasunobu
Winer, Brian L.
Diffuse radiation
Dust, extinction
Gamma rays: general
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 γ-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.
2011-10-17T11:03:12Z
2011-10-17T11:03:12Z
2010-10-19
artículo
Astrophysical Journal 723 (2) : 1082 (2010)
0004-637X
http://hdl.handle.net/10261/41219
10.1088/0004-637X/723/2/1082
1538-4357
eng
http://dx.doi.org/10.1088/0004-637X/723/2/1082
openAccess
Institute of Physics Publishing