Measurement of the extragalactic background light using MAGIC and Fermi-LAT gamma-ray observations of blazars up to z=1

被引：80

作者：

Acciari, V. A. ^{[1
,2
]}

Ansoldi, S. ^{[3
]}

Antonelli, L. A. ^{[4
]}

Engels, A. Arbet ^{[5
]}

Baack, D. ^{[6
]}

Babic, A. ^{[7
,8
,9
,10
,11
]}

Banerjee, B. ^{[12
]}

Barres de Almeida, U. ^{[13
]}

Barrio, J. A. ^{[14
]}

Gonzalez, J. Becerra ^{[1
,2
]}

Bednarek, W. ^{[15
]}

Bellizzi, L. ^{[16
,17
]}

Bernardini, E. ^{[18
,38
]}

Berti, A. ^{[19
,39
]}

Besenrieder, J. ^{[20
]}

Bhattacharyya, W. ^{[18
]}

Bigongiari, C. ^{[4
]}

Biland, A. ^{[5
]}

Blanch, O. ^{[21
]}

Bonnoli, G. ^{[16
,17
]}

Busetto, G. ^{[22
,23
]}

Carosi, R. ^{[24
,25
]}

Ceribella, G. ^{[20
]}

Chai, Y. ^{[20
]}

Cikota, S. ^{[7
,8
,9
,10
,11
]}

Colak, M. ^{[21
]}

Colin, U. ^{[20
]}

Colombo, E. ^{[1
,2
]}

Contreras, J. L. ^{[14
]}

Cortina, J. ^{[21
]}

Covino, S. ^{[4
]}

D'Elia, V. ^{[4
]}

Da Vela, P. ^{[24
,25
]}

Dazzi, F. ^{[4
]}

De Angelis, A. ^{[22
,23
]}

De Lotto, B. ^{[3
]}

Delfino, M. ^{[21
,40
]}

Delgado, J. ^{[21
,40
]}

Di Pierro, F. ^{[19
]}

Do Souto Espineira, E. ^{[21
]}

Dominguez, A. ^{[14
]}

Prester, D. Dominis ^{[7
,8
,9
,10
,11
]}

Dorner, D. ^{[26
]}

Doro, M. ^{[22
,23
]}

Elsaesser, D. ^{[6
]}

Ramazani, V. Fallah ^{[27
,28
,29
]}

Fattorini, A. ^{[6
]}

Fernandez-Barral, A. ^{[22
,23
]}

Ferrara, G. ^{[4
]}

Fidalgo, D. ^{[14
]}

机构：

[1] Inst Astrofis Canarias, E-38200 San Cristobal la Laguna, Spain

[2] Univ La Laguna, Dpto Astrofis, E-38206 Tenerife, Spain

[3] Univ Udine, INFN Trieste, I-33100 Udine, Italy

[4] Natl Inst Astrophys INAF, I-00136 Rome, Italy

[5] Swiss Fed Inst Technol, CH-8093 Zurich, Switzerland

[6] Tech Univ Dortmund, D-44221 Dortmund, Germany

[7] Univ Rijeka, Dept Phys, Croatian Consortium, Rijeka 51000, Croatia

[8] Univ Split, FESB, Split 21000, Croatia

[9] Univ Zagreb, FER, Zagreb 10000, Croatia

[10] Univ Osijek, Osijek 31000, Croatia

[11] Rudjer Boskovic Inst, Zagreb 10000, Croatia

[12] HBNI, Saha Inst Nucl Phys, 1-AF Bidhannagar,Sect 1, Kolkata 700064, India

[13] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, RJ, Brazil

[14] Univ Complutense, Unidad Particulas & Cosmol UPARCOS, E-28040 Madrid, Spain

[15] Univ Lodz, Dept Astrophys, PL-90236 Lodz, Poland

[16] Univ Siena, I-53100 Siena, Italy

[17] INFN Pisa, I-53100 Siena, Italy

[18] Deutsch Elektronen Synchrotron DESY, D-15738 Zeuthen, Germany

[19] INFN, I-00044 Rome, Italy

[20] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[21] BIST, IFAE, E-08193 Bellaterra, Barcelona, Spain

[22] Univ Padua, I-35131 Padua, Italy

[23] INFN, I-35131 Padua, Italy

[24] Univ Pisa, I-56126 Pisa, Italy

[25] INFN Pisa, I-56126 Pisa, Italy

[26] Univ Wurzburg, D-97074 Wurzburg, Germany

[27] Univ Turku, Finnish MAGIC Consortium, Tuorla Observ, Dept Phys & Astron, FI-20014 Turku, Finland

[28] Univ Turku, Finnish Ctr Astron ESO FINCA, FI-20014 Turku, Finland

[29] Univ Oulu, Astron Div, FI-90014 Oulu, Finland

[30] Univ Autonoma Barcelona, Dept Fis, CERES IEEC, E-08193 Barcelona, Spain

[31] Univ Barcelona, ICCUB, IEEC UB, E-08028 Barcelona, Spain

[32] NAS RA, ICRANet Armenia, Yerevan 0019, Armenia

[33] Univ Tokyo, ICRR, Japanese MAGIC Consortium, Chiba 2778582, Japan

[34] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

[35] Tokai Univ, Kanagawa 2591292, Japan

[36] RIKEN, Wako, Saitama 3510198, Japan

[37] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, BG-1784 Sofia, Bulgaria

[38] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

[39] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy

[40] PIC, E-08193 Bellaterra, Barcelona, Spain

[41] Univ Bologna, Dept Phys & Astron, INAR Trieste, I-40129 Bologna, Italy

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2019年 / 486卷 / 03期

关键词：

galaxies: active; gamma-rays: galaxies; infrared: diffuse background; infrared: galaxies; LARGE-AREA TELESCOPE; NUMBER COUNTS; TENTATIVE DETECTION; EXPERIMENT SEARCH; MAJOR UPGRADE; MU-M; EVOLUTION; DIRBE; RADIATION; SPITZER;

D O I：

10.1093/mnras/stz943

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 = 0.03-0.944, 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 that 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 gamma gamma 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 per cent and 23 per cent 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.

引用

页码：4233 / 4251

页数：19

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