MULTIWAVELENGTH EVIDENCE FOR QUASI-PERIODIC MODULATION IN THE GAMMA-RAY BLAZAR PG 1553+113

被引:171
作者
Ackermann, M. [1 ]
Ajello, M. [2 ]
Albert, A. [3 ,4 ]
Atwood, W. B. [5 ,6 ]
Baldini, L. [3 ,4 ,7 ,8 ]
Ballet, J. [9 ]
Barbiellini, G. [10 ,11 ]
Bastieri, D. [12 ,13 ]
Gonzalez, J. Becerra [14 ,15 ,16 ]
Bellazzini, R. [17 ]
Bissaldi, E. [18 ]
Blandford, R. D. [3 ,4 ]
Bloom, E. D. [3 ,4 ]
Bonino, R. [19 ,20 ]
Bottacini, E. [3 ,4 ]
Bregeon, J. [21 ]
Bruel, P. [22 ]
Buehler, R. [1 ]
Buson, S. [12 ,13 ]
Caliandro, G. A. [3 ,4 ,23 ]
Cameron, R. A. [3 ,4 ]
Caputo, R. [5 ,6 ]
Caragiulo, M. [18 ]
Caraveo, P. A. [24 ]
Cavazzuti, E. [25 ]
Cecchi, C. [26 ,27 ]
Chekhtman, A. [28 ]
Chiang, J. [3 ,4 ]
Chiaro, G. [13 ]
Ciprini, S. [25 ,26 ,29 ]
Cohen-Tanugi, J. [21 ]
Conrad, J. [30 ,31 ,32 ]
Cutini, S. [25 ,26 ,29 ]
D'Ammando, F. [33 ,34 ]
de Angelis, A. [35 ,36 ]
de Palma, F. [18 ,37 ]
Desiante, R. [19 ,38 ]
Di Venere, L. [39 ]
Dominguez, A. [2 ]
Drell, P. S. [3 ,4 ]
Favuzzi, C. [18 ,39 ]
Fegan, S. J. [22 ]
Ferrara, E. C. [14 ]
Focke, W. B. [3 ,4 ]
Fuhrmann, L. [40 ]
Fukazawa, Y. [41 ]
Fusco, P. [18 ,39 ]
Gargano, F. [18 ]
Gasparrini, D. [25 ,26 ,29 ]
Giglietto, N. [18 ,39 ]
机构
[1] Deutsch Elektronen Synchrotron DESY, D-15738 Zeuthen, Germany
[2] Clemson Univ, Dept Phys & Astron, Kinard Lab Phys, Clemson, SC 29634 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, Dept Phys, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA
[6] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA
[7] Univ Pisa, I-56127 Pisa, Italy
[8] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy
[9] Univ Paris Diderot, Lab AIM, CEA IRFU, CNRS,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 & Astron G Galilei, I-35131 Padua, Italy
[14] NASA Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
[15] Univ Maryland, Dept Phys, College Pk, MD 20742 USA
[16] Univ Maryland, Dept Astron, College Pk, MD 20742 USA
[17] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy
[18] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy
[19] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy
[20] Univ Turin, Dipartimento Fis Gen Amadeo Avogadro, I-10125 Turin, Italy
[21] Univ Montpellier, CNRS, IN2P3, Lab Universe & Particules Montpellier, F-34059 Montpellier, France
[22] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France
[23] CIFS, I-10133 Turin, Italy
[24] INAF Ist Astrofis Spaziale & Fis Cosm, I-20133 Milan, Italy
[25] ASI Sci Data Ctr, I-00133 Rome, Italy
[26] Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, Italy
[27] Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy
[28] George Mason Univ, Coll Sci, Fairfax, VA 22030 USA
[29] INAF Osservatorio Astron Roma, I-00040 Rome, Italy
[30] Stockholm Univ, Dept Phys, AlbaNova, SE-10691 Stockholm, Sweden
[31] AlbaNova, Oskar Klein Ctr Cosmoparticle Phys, SE-10691 Stockholm, Sweden
[32] Royal Swedish Acad Sci, SE-10405 Stockholm, Sweden
[33] INAF Ist Radioastron, I-40129 Bologna, Italy
[34] Univ Bologna, Dipartimento Astron, I-40127 Bologna, Italy
[35] Univ Udine, Dipartimento Fis, I-33100 Udine, Italy
[36] Ist Nazl Fis Nucl, Sez Trieste, Grp Collegato Udine, I-33100 Udine, Italy
[37] Univ Telemat Pegaso, I-80132 Naples, Italy
[38] Univ Udine, I-33100 Udine, Italy
[39] Univ Politecnico Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy
[40] Max Planck Inst Radioastron, D-53121 Bonn, Germany
[41] Hiroshima Univ, Dept Phys Sci, Higashihiroshima, Hiroshima 7398526, Japan
[42] Naval Res Lab, Div Space Sci, Washington, DC 20375 USA
[43] Univ N Florida, Dept Phys, Jacksonville, FL 32224 USA
[44] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England
[45] Univ Iceland, Inst Sci, IS-107 Reykjavik, Iceland
[46] Univ Tokyo, Grad Sch Sci, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan
[47] KTH Royal Inst Technol, AlbaNova, Dept Phys, SE-10691 Stockholm, Sweden
[48] Inst Space Sci IEEC CSIC, E-08193 Barcelona, Spain
[49] Univ Bordeaux 1, IN2P3, CNRS, Ctr Etud Nucl Bordeaux Gradignan, F-33175 Gradignan, France
[50] NRAO, Socorro, NM 87801 USA
基金
美国国家科学基金会; 美国国家航空航天局; 芬兰科学院;
关键词
accretion; accretion disks; BL Lacertae objects: general; BL Lacertae objects: individual (PG 1553+113); galaxies: jets; gamma rays: galaxies; gamma rays: general; RELATIVISTIC MAGNETOHYDRODYNAMIC SIMULATIONS; LARGE-AREA TELESCOPE; BLACK-HOLE BINARY; HELICAL JETS; MISALIGNED ACCRETION; RADIO; VARIABILITY; TIME; ORIGIN; DISC;
D O I
10.1088/2041-8205/813/2/L41
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We report for the first time a gamma-ray and multiwavelength nearly periodic oscillation in an active galactic nucleus. Using the Fermi Large Area Telescope we have discovered an apparent quasi-periodicity in the gamma-ray flux (E > 100 MeV) from the GeV/TeV BL Lac object PG 1553+113. The marginal significance of the 2.18 +/- 0.08 year period gamma-ray cycle is strengthened by correlated oscillations observed in radio and optical fluxes, through data collected in the Owens Valley Radio Observatory, Tuorla, Katzman Automatic Imaging Telescope, and Catalina Sky Survey monitoring programs and Swift-UVOT. The optical cycle appearing in similar to 10 years of data has a similar period, while the 15 GHz oscillation is less regular than seen in the other bands. Further long-term multiwavelength monitoring of this blazar may discriminate among the possible explanations for this quasi-periodicity.
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页数:8
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