THE RADIO/GAMMA-RAY CONNECTION IN ACTIVE GALACTIC NUCLEI IN THE ERA OF THE FERMI LARGE AREA TELESCOPE

被引：111

作者：

Ackermann, M. ^{[2
,3
]}

Ajello, M. ^{[2
,3
]}

Allafort, A. ^{[2
,3
]}

Angelakis, E. ^{[4
]}

Axelsson, M. ^{[5
,6
,7
]}

Baldini, L. ^{[8
]}

Ballet, J. ^{[9
]}

Barbiellini, G. ^{[10
,11
]}

Bastieri, D. ^{[12
,13
]}

Bellazzini, R. ^{[8
]}

Berenji, B. ^{[2
,3
]}

Blandford, R. D. ^{[2
,3
]}

Bloom, E. D. ^{[2
,3
]}

Bonamente, E. ^{[14
,15
]}

Borgland, A. W. ^{[2
,3
]}

Bouvier, A. ^{[16
,17
]}

Bregeon, J. ^{[8
]}

Brez, A. ^{[8
]}

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

Bruel, P. ^{[20
]}

Buehler, R. ^{[2
,3
]}

Buson, S. ^{[12
,13
]}

Caliandro, G. A. ^{[21
]}

Cameron, R. A. ^{[2
,3
]}

Cannon, A. ^{[22
,23
]}

Caraveo, P. A. ^{[24
]}

Casandjian, J. M. ^{[9
]}

Cavazzuti, E. ^{[25
]}

Cecchi, C. ^{[14
,15
]}

Charles, E. ^{[2
,3
]}

Chekhtman, A. ^{[26
]}

Cheung, C. C. ^{[27
]}

Ciprini, S. ^{[15
]}

Claus, R. ^{[2
,3
]}

Cohen-Tanugi, J. ^{[28
]}

Cutini, S. ^{[25
]}

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

Dermer, C. D. ^{[29
]}

do Couto e Silva, E. ^{[2
,3
]}

Drell, P. S. ^{[2
,3
]}

Dubois, R. ^{[2
,3
]}

Dumora, D. ^{[30
]}

Escande, L. ^{[30
,31
]}

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

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

Focke, W. B. ^{[2
,3
]}

Fortin, P. ^{[20
]}

Frailis, M. ^{[32
,33
,34
]}

Fuhrmann, L. ^{[4
]}

Fukazawa, Y. ^{[35
]}

机构：

[1] INAF Ist Radioastron, I-40129 Bologna, Italy

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

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

[4] Max Planck Inst Radioastron, D-53121 Bonn, Germany

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

[6] Lund Observ, SE-22100 Lund, Sweden

[7] Oskar Klein Ctr Cosmoparticle Phys, SE-10691 Stockholm, Sweden

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

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

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

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

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

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

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

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

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

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

[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] Inst Ciencies Espai IEEC CSIC, Barcelona 08193, Spain

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

[23] Univ Coll Dublin, Sch Phys, Dublin 4, Ireland

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

[25] Agenzia Spaziale Italiana ASI Sci Data Ctr, I-00044 Frascati, Roma, Italy

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

[27] Natl Acad Sci, Washington, DC 20001 USA

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

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

[30] Univ Bordeaux 1, CNRS, IN2P3, Ctr Etud Nucl Bordeaux Gradignan, F-33175 Gradignan, France

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

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

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

[34] Osserv Astron Trieste, Ist Nazl Fis Nucl, I-34143 Trieste, Italy

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

[36] INAF IASF Bologna, I-40129 Bologna, Italy

[37] Univ Alabama, CSPAR, Huntsville, AL 35899 USA

[38] Univ Iceland, Inst Sci, IS-107 Reykjavik, Iceland

[39] Waseda Univ, Res Inst Sci & Engn, Shinjuku Ku, Tokyo 1698555, Japan

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

[41] CALTECH, Cahill Ctr Astron & Astrophys, Pasadena, CA 91125 USA

[42] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

[43] Univ Maryland, Dept Astron, College Pk, MD 20742 USA

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

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

[46] Hiroshima Univ, Hiroshima Astrophys Sci Ctr, Hiroshima 7398526, Japan

[47] JAXA, Inst Space & Astronaut Sci, Chuo Ku, Kanagawa 2525210, Japan

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

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

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

来源：

ASTROPHYSICAL JOURNAL | 2011年 / 741卷 / 01期

基金：

美国国家科学基金会;

关键词：

BL Lacertae objects: general; galaxies: active; galaxies: jets; gamma rays: galaxies; radio continuum: galaxies; quasars: general; ALL-SKY SURVEY; POLARIMETRY SURVEY; SOURCE CATALOG; BACKGROUND-RADIATION; SPECTRUM SOURCES; RADIO-SOURCES; LOUD BLAZARS; EMISSION; GALAXIES; AGN;

D O I：

10.1088/0004-637X/741/1/30

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a detailed statistical analysis of the correlation between radio and gamma-ray emission of the active galactic nuclei (AGNs) detected by Fermi during its first year of operation, with the largest data sets ever used for this purpose. We use both archival interferometric 8.4 GHz data (from the Very Large Array and ATCA, for the full sample of 599 sources) and concurrent single-dish 15 GHz measurements from the Owens Valley Radio Observatory (OVRO, for a sub sample of 199 objects). Our unprecedentedly large sample permits us to assess with high accuracy the statistical significance of the correlation, using a surrogate data method designed to simultaneously account for common-distance bias and the effect of a limited dynamical range in the observed quantities. We find that the statistical significance of a positive correlation between the centimeter radio and the broadband (E > 100 MeV) gamma-ray energy flux is very high for the whole AGN sample, with a probability of < 10(-7) for the correlation appearing by chance. Using the OVRO data, we find that concurrent data improve the significance of the correlation from 1.6 x 10(-6) to 9.0 x 10(-8). Our large sample size allows us to study the dependence of correlation strength and significance on specific source types and gamma-ray energy band. We find that the correlation is very significant (chance probability < 10(-7)) for both flat spectrum radio quasars and BL Lac objects separately; a dependence of the correlation strength on the considered gamma-ray energy band is also present, but additional data will be necessary to constrain its significance.

引用

页数：20

共 48 条

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Bastieri, D. ;

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