FERMI OBSERVATIONS OF TeV-SELECTED ACTIVE GALACTIC NUCLEI

被引：115

作者：

Abdo, A. A. ^{[1
,2
]}

Ackermann, M. ^{[3
,4
]}

Ajello, M. ^{[3
,4
]}

Atwood, W. B. ^{[5
,6
]}

Axelsson, M. ^{[7
,8
]}

Baldini, L. ^{[9
]}

Ballet, J. ^{[10
]}

Barbiellini, G. ^{[11
,12
]}

Baring, M. G. ^{[13
]}

Bastieri, D. ^{[14
,15
]}

Bechtol, K. ^{[3
,4
]}

Bellazzini, R. ^{[9
]}

Berenji, B. ^{[3
,4
]}

Bloom, E. D. ^{[3
,4
]}

Bonamente, E. ^{[16
,17
]}

Borgland, A. W. ^{[3
,4
]}

Bregeon, J. ^{[9
]}

Brez, A. ^{[9
]}

Brigida, M. ^{[18
,19
]}

Bruel, P. ^{[20
]}

Burnett, T. H. ^{[21
]}

Caliandro, G. A. ^{[18
,19
]}

Cameron, R. A. ^{[3
,4
]}

Caraveo, P. A. ^{[22
]}

Casandjian, J. M. ^{[10
]}

Cavazzuti, E. ^{[23
]}

Cecchi, C. ^{[16
,17
]}

Celik, Oe. ^{[24
,25
]}

Chekhtman, A. ^{[1
,26
]}

Cheung, C. C.

Chiang, J. ^{[3
,4
]}

Ciprini, S. ^{[16
,17
]}

Claus, R. ^{[3
,4
]}

Cohen-Tanugi, J. ^{[27
]}

Cominsky, L. R. ^{[28
]}

Conrad, J. ^{[8
,29
,30
]}

Cutini, S. ^{[23
]}

de Angelis, A. ^{[31
,32
]}

de Palma, F. ^{[18
,19
]}

di Bernardo, G. ^{[9
]}

do Couto e Silva, E. ^{[3
,4
]}

Drell, P. S. ^{[3
,4
]}

Drlica-Wagner, A. ^{[3
,4
]}

Dubois, R. ^{[3
,4
]}

Dumora, D. ^{[33
,34
]}

Farnier, C. ^{[27
]}

Favuzzi, C. ^{[18
,19
]}

Fegan, S. J. ^{[20
]}

Finke, J. ^{[2
]}

Focke, W. B. ^{[3
,4
]}

机构：

[1] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA

[2] Natl Acad Sci, Natl Res Council Res Associate, Washington, DC 20001 USA

[3] Stanford Univ, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Dept Phys, Stanford, CA 94305 USA

[4] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA

[5] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Dept Phys, Santa Cruz, CA 95064 USA

[6] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA

[7] Stockholm Univ, Dept Astron, SE-10691 Stockholm, Sweden

[8] Oskar Klein Ctr Cosmo Particle Phys, SE-10691 Stockholm, Sweden

[9] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy

[10] Univ Paris Diderot, Lab AIM, CEA IRFU CNRS, Serv Astrophys,CEA Saclay, F-91191 Gif Sur Yvette, France

[11] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy

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

[13] Rice Univ, Dept Phys & Astron, Houston, TX 77251 USA

[14] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy

[15] Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy

[16] Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, Italy

[17] Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy

[18] Univ Politecn Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy

[19] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy

[20] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France

[21] Univ Washington, Dept Phys, Seattle, WA 98195 USA

[22] Ist Astrofis Spaziale & Fis Cosm, INAF, I-20133 Milan, Italy

[23] Sci Data Ctr, ASI, I-00044 Frascati, Roma, Italy

[24] NASA, Goddard Space Flight Ctr, CRESST, Greenbelt, MD 20771 USA

[25] Univ Maryland Baltimore Cty, Baltimore, MD 21250 USA

[26] George Mason Univ, Fairfax, VA 22030 USA

[27] Univ Montpellier 2, Lab Phys Theor & Astroparticules, CNRS, IN2P3, Montpellier, France

[28] Sonoma State Univ, Dept Phys & Astron, Rohnert Pk, CA 94928 USA

[29] Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden

[30] Royal Inst Technol KTH, Dept Phys, SE-10691 Stockholm, Sweden

[31] Univ Udine, Dipartimento Fis, I-33100 Udine, Italy

[32] Ist Nazl Fis Nucl, Sez Trieste, Grp Collegato Udine, I-33100 Udine, Italy

[33] Univ Bordeaux, Ctr Etud Nucl Bordeaux Gradignan, UMR 5797, F-33175 Gradignan, France

[34] Ctr Etud Nucl Bordeaux Gradignan, CNRS, IN2P3, UMR 5797, F-33175 Gradignan, France

[35] Osserv Astron Brera, INAF, I-23807 Merate, Italy

[36] Hiroshima Univ, Dept Phys Sci, Hiroshima 7398526, Japan

[37] Univ Maryland, College Pk, MD 20742 USA

[38] Univ Alabama, Huntsville, AL 35899 USA

[39] Ohio State Univ, Dept Phys, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA

[40] Tokyo Inst Technol, Dept Phys, Meguro, Tokyo 1528551, Japan

[41] Waseda Univ, Shinjuku Ku, Tokyo 1698050, Japan

[42] RIKEN, Inst Phys & Chem Res, Cosm Radiat Lab, Wako, Saitama 3510198, Japan

[43] CNRS UPS, Ctr Etud Spatiale Rayonnements, F-31028 Toulouse 4, France

[44] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy

[45] Univ Denver, Dept Phys & Astron, Denver, CO 80208 USA

[46] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany

[47] JAXA, Inst Space & Astronaut Sci, Kanagawa 2298510, Japan

[48] Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria

[49] Leopold Franzens Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria

[50] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA

来源：

ASTROPHYSICAL JOURNAL | 2009年 / 707卷 / 02期

基金：

美国国家航空航天局; 瑞典研究理事会;

关键词：

gamma rays: observations; GAMMA-RAY EMISSION; PEAKED BL-LACERTAE; SIMULTANEOUS MULTIWAVELENGTH OBSERVATIONS; EXTRAGALACTIC BACKGROUND LIGHT; VERITAS OBSERVATIONS; PKS; 2155-304; UPPER LIMITS; DISCOVERY; BLAZAR; LAC;

D O I：

10.1088/0004-637X/707/2/1310

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on observations of TeV-selected active galactic nuclei (AGNs) made during the first 5.5 months of observations with the Large Area Telescope (LAT) on-board the Fermi Gamma-ray Space Telescope (Fermi). In total, 96 AGNs were selected for study, each being either (1) a source detected at TeV energies (28 sources) or (2) an object that has been studied with TeV instruments and for which an upper limit has been reported (68 objects). The Fermi observations show clear detections of 38 of these TeV-selected objects, of which 21 are joint GeV-TeV sources, and 29 were not in the third EGRET catalog. For each of the 38 Fermi-detected sources, spectra and light curves are presented. Most can be described with a power law of spectral index harder than 2.0, with a spectral break generally required to accommodate the TeV measurements. Based on an extrapolation of the Fermi spectrum, we identify sources, not previously detected at TeV energies, which are promising targets for TeV instruments. Evidence for systematic evolution of the gamma-ray spectrum with redshift is presented and discussed in the context of interaction with the extragalactic background light.

引用

页码：1310 / 1333

页数：24

共 93 条

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Falcone, A. D.
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Dickherber, R.
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