%0 Generic %1 collaboration2019measurement %A collaboration, MAGIC %A Acciari, V. A. %A Ansoldi, S. %A Antonelli, L. A. %A Engels, A. Arbet %A Baack, D. %A Babić, A. %A Banerjee, B. %A de Almeida, U. Barres %A Barrio, J. A. %A González, J. Becerra %A Bednarek, W. %A Bellizzi, L. %A Bernardini, E. %A Berti, A. %A Besenrieder, J. %A Bhattacharyya, W. %A Bigongiari, C. %A Biland, A. %A Blanch, O. %A Bonnoli, G. %A Busetto, G. %A Carosi, R. %A Ceribella, G. %A Chai, Y. %A Cikota, S. %A Çolak, S. M. %A Colin, U. %A Colombo, E. %A Contreras, J. L. %A Cortina, J. %A Covino, S. %A D'Elia, V. %A Da Vela, P. %A Dazzi, F. %A De Angelis, A. %A De Lotto, B. %A Delfino, M. %A Delgado, J. %A Di Pierro, F. %A Espiñeira, E. Do Souto %A Domínguez, A. %A Prester, D. Dominis %A Dorner, D. %A Doro, M. %A Elsaesser, D. %A Ramazani, V. Fallah %A Fattorini, A. %A Fernández-Barral, A. %A Ferrara, G. %A Fidalgo, D. %A Foffano, L. %A Fonseca, M. V. %A Font, L. %A Fruck, C. %A Galindo, D. %A Gallozzi, S. %A López, R. J. García %A Garczarczyk, M. %A Gasparyan, S. %A Gaug, M. %A Godinović, N. %A Green, D. %A Guberman, D. %A Hadasch, D. %A Hahn, A. %A Hassan, T. %A Herrera, J. %A Hoang, J. %A Hrupec, D. %A Inoue, S. %A Ishio, K. %A Iwamura, Y. %A Kubo, H. %A Kushida, J. %A Lamastra, A. %A Lelas, D. %A Leone, F. %A Lindfors, E. %A Lombardi, S. %A Longo, F. %A López, M. %A López-Coto, R. %A López-Oramas, A. %A Fraga, B. Machado de Oliveira %A Maggio, C. %A Majumdar, P. %A Makariev, M. %A Mallamaci, M. %A Maneva, G. %A Manganaro, M. %A Mannheim, K. %A Maraschi, L. %A Mariotti, M. %A Martínez, M. %A Masuda, S. %A Mazin, D. %A Mićanović, S. %A Miceli, D. %A Minev, M. %A Miranda, J. M. %A Mirzoyan, R. %A Molina, E. %A Moralejo, A. %A Morcuende, D. %A Moreno, V. %A Moretti, E. %A Munar-Adrover, P. %A Neustroev, V. %A Niedzwiecki, A. %A Rosillo, M. Nievas %A Nigro, C. %A Nilsson, K. %A Ninci, D. %A Nishijima, K. %A Noda, K. %A Nogués, L. %A Nöthe, M. %A Paiano, S. %A Palacio, J. %A Palatiello, M. %A Paneque, D. %A Paoletti, R. %A Paredes, J. M. %A Peñil, P. %A Peresano, M. %A Persic, M. %A Moroni, P. G. Prada %A Prandini, E. %A Puljak, I. %A Rhode, W. %A Ribó, M. %A Rico, J. %A Righi, C. %A Rugliancich, A. %A Saha, L. %A Sahakyan, N. %A Saito, T. %A Satalecka, K. %A Schweizer, T. %A Sitarek, J. %A Šnidarić, I. %A Sobczynska, D. %A Somero, A. %A Stamerra, A. %A Strom, D. %A Strzys, M. %A Surić, T. %A Tavecchio, F. %A Temnikov, P. %A Terzić, T. %A Teshima, M. %A Torres-Alba, N. %A Tsujimoto, S. %A van Scherpenberg, J. %A Vanzo, G. %A Acosta, M. Vázquez %A Vovk, I. %A Will, M. %A Zarić, D. %D 2019 %K tifr %T Measurement of the Extragalactic Background Light using MAGIC and Fermi-LAT gamma-ray observations of blazars up to z = 1 %U http://arxiv.org/abs/1904.00134 %X 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 the MAGIC telescopes and Fermi-LAT. The EBL is the part of the diffuse extragalactic radiation spanning the ultraviolet, visible and infrared bands. Major contributors to the EBL are the light emitted by stars through the history of the universe, and the fraction of it which was absorbed by dust in galaxies and re-emitted at longer wavelengths. The EBL can be studied indirectly through its effect on very-high energy photons that are emitted by cosmic sources and absorbed via photon-photon interactions during their propagation across cosmological distances. We obtain estimates of the EBL density in good agreement with state-of-the-art models of the EBL production and evolution. The 1-sigma upper bounds, including systematic uncertainties, are between 13% and 23% above the nominal EBL density in the models. No anomaly in the expected transparency of the universe to gamma rays is observed in any range of optical depth.We also perform a wavelength-resolved EBL determination, which results in a hint of an excess of EBL in the 0.18 - 0.62 $\mu$m range relative to the studied models, yet compatible with them within systematics.

@misc{collaboration2019measurement, abstract = {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 the MAGIC telescopes and Fermi-LAT. The EBL is the part of the diffuse extragalactic radiation spanning the ultraviolet, visible and infrared bands. Major contributors to the EBL are the light emitted by stars through the history of the universe, and the fraction of it which was absorbed by dust in galaxies and re-emitted at longer wavelengths. The EBL can be studied indirectly through its effect on very-high energy photons that are emitted by cosmic sources and absorbed via photon-photon interactions during their propagation across cosmological distances. We obtain estimates of the EBL density in good agreement with state-of-the-art models of the EBL production and evolution. The 1-sigma upper bounds, including systematic uncertainties, are between 13% and 23% above the nominal EBL density in the models. No anomaly in the expected transparency of the universe to gamma rays is observed in any range of optical depth.We also perform a wavelength-resolved EBL determination, which results in a hint of an excess of EBL in the 0.18 - 0.62 $\mu$m range relative to the studied models, yet compatible with them within systematics.}, added-at = {2019-04-02T09:11:09.000+0200}, author = {collaboration, MAGIC and Acciari, V. A. and Ansoldi, S. and Antonelli, L. A. and Engels, A. Arbet and Baack, D. and Babić, A. and Banerjee, B. and de Almeida, U. Barres and Barrio, J. A. and González, J. Becerra and Bednarek, W. and Bellizzi, L. and Bernardini, E. and Berti, A. and Besenrieder, J. and Bhattacharyya, W. and Bigongiari, C. and Biland, A. and Blanch, O. and Bonnoli, G. and Busetto, G. and Carosi, R. and Ceribella, G. and Chai, Y. and Cikota, S. and Çolak, S. M. and Colin, U. and Colombo, E. and Contreras, J. L. and Cortina, J. and Covino, S. and D'Elia, V. and Da Vela, P. and Dazzi, F. and De Angelis, A. and De Lotto, B. and Delfino, M. and Delgado, J. and Di Pierro, F. and Espiñeira, E. Do Souto and Domínguez, A. and Prester, D. Dominis and Dorner, D. and Doro, M. and Elsaesser, D. and Ramazani, V. Fallah and Fattorini, A. and Fernández-Barral, A. and Ferrara, G. and Fidalgo, D. and Foffano, L. and Fonseca, M. V. and Font, L. and Fruck, C. and Galindo, D. and Gallozzi, S. and López, R. J. García and Garczarczyk, M. and Gasparyan, S. and Gaug, M. and Godinović, N. and Green, D. and Guberman, D. and Hadasch, D. and Hahn, A. and Hassan, T. and Herrera, J. and Hoang, J. and Hrupec, D. and Inoue, S. and Ishio, K. and Iwamura, Y. and Kubo, H. and Kushida, J. and Lamastra, A. and Lelas, D. and Leone, F. and Lindfors, E. and Lombardi, S. and Longo, F. and López, M. and López-Coto, R. and López-Oramas, A. and Fraga, B. Machado de Oliveira and Maggio, C. and Majumdar, P. and Makariev, M. and Mallamaci, M. and Maneva, G. and Manganaro, M. and Mannheim, K. and Maraschi, L. and Mariotti, M. and Martínez, M. and Masuda, S. and Mazin, D. and Mićanović, S. and Miceli, D. and Minev, M. and Miranda, J. M. and Mirzoyan, R. and Molina, E. and Moralejo, A. and Morcuende, D. and Moreno, V. and Moretti, E. and Munar-Adrover, P. and Neustroev, V. and Niedzwiecki, A. and Rosillo, M. Nievas and Nigro, C. and Nilsson, K. and Ninci, D. and Nishijima, K. and Noda, K. and Nogués, L. and Nöthe, M. and Paiano, S. and Palacio, J. and Palatiello, M. and Paneque, D. and Paoletti, R. and Paredes, J. M. and Peñil, P. and Peresano, M. and Persic, M. and Moroni, P. G. Prada and Prandini, E. and Puljak, I. and Rhode, W. and Ribó, M. and Rico, J. and Righi, C. and Rugliancich, A. and Saha, L. and Sahakyan, N. and Saito, T. and Satalecka, K. and Schweizer, T. and Sitarek, J. and Šnidarić, I. and Sobczynska, D. and Somero, A. and Stamerra, A. and Strom, D. and Strzys, M. and Surić, T. and Tavecchio, F. and Temnikov, P. and Terzić, T. and Teshima, M. and Torres-Alba, N. and Tsujimoto, S. and van Scherpenberg, J. and Vanzo, G. and Acosta, M. Vázquez and Vovk, I. and Will, M. and Zarić, D.}, biburl = {https://www.bibsonomy.org/bibtex/29f491d73bb195a80046d0d494ea7689f/citekhatri}, description = {Measurement of the Extragalactic Background Light using MAGIC and Fermi-LAT gamma-ray observations of blazars up to z = 1}, interhash = {f67aefd44abacf1dfc806b25444549ef}, intrahash = {9f491d73bb195a80046d0d494ea7689f}, keywords = {tifr}, note = {cite arxiv:1904.00134Comment: Accepted by MNRAS}, timestamp = {2019-04-04T10:22:14.000+0200}, title = {Measurement of the Extragalactic Background Light using MAGIC and Fermi-LAT gamma-ray observations of blazars up to z = 1}, url = {http://arxiv.org/abs/1904.00134}, year = 2019 }