MULTIWAVELENGTH OBSERVATIONS OF A TeV-FLARE FROM W COMAE

被引:72
作者
Acciari, V. A. [1 ]
Aliu, E. [2 ,3 ]
Aune, T. [4 ,5 ]
Beilicke, M. [6 ]
Benbow, W. [1 ]
Boettcher, M. [7 ]
Boltuch, D. [2 ,3 ]
Buckley, J. H. [6 ]
Bradbury, S. M. [8 ]
Bugaev, V. [6 ]
Byrum, K. [9 ]
Cannon, A. [10 ]
Cesarini, A. [11 ]
Ciupik, L. [12 ]
Cogan, P. [13 ]
Cui, W. [14 ]
Dickherber, R. [6 ]
Duke, C. [15 ]
Falcone, A. [16 ]
Finley, J. P. [14 ]
Fortin, P. [17 ]
Fortson, L. [12 ]
Furniss, A. [4 ,5 ]
Galante, N. [1 ]
Gall, D. [14 ]
Gibbs, K. [1 ]
Gillanders, G. H. [11 ]
Grube, J. [10 ]
Guenette, R. [13 ]
Gyuk, G. [12 ]
Hanna, D. [13 ]
Holder, J. [2 ,3 ]
Hui, C. M. [18 ]
Humensky, T. B. [19 ]
Kaaret, P. [20 ]
Karlsson, N. [12 ]
Kertzman, M. [21 ]
Kieda, D. [18 ]
Konopelko, A. [22 ]
Krawczynski, H. [6 ]
Krennrich, F. [23 ]
Lang, M. J. [11 ]
LeBohec, S. [18 ]
Maier, G. [13 ]
McArthur, S. [6 ]
McCann, A. [13 ]
McCutcheon, M. [13 ]
Millis, J. [24 ]
Moriarty, P. [25 ]
Ong, R. A. [26 ]
机构
[1] Harvard Smithsonian Ctr Astrophys, Fred Lawrence Whipple Observ, Amado, AZ 85645 USA
[2] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA
[3] Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA
[4] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA
[5] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA
[6] Washington Univ, Dept Phys, St Louis, MO 63130 USA
[7] Ohio Univ, Inst Astrophys, Dept Phys & Astron, Athens, OH 45701 USA
[8] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England
[9] Argonne Natl Lab, Argonne, IL 60439 USA
[10] Natl Univ Ireland Univ Coll Dublin, Sch Phys, Dublin 4, Ireland
[11] Natl Univ Ireland, Sch Phys, Galway, Ireland
[12] Adler Planetarium & Astron Museum, Dept Astron, Chicago, IL 60605 USA
[13] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada
[14] Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA
[15] Grinnell Coll, Dept Phys, Grinnell, IA 50112 USA
[16] Penn State Univ, Dept Astron & Astrophys, Davey Lab 525, University Pk, PA 16802 USA
[17] Columbia Univ Barnard Coll, Dept Phys & Astron, New York, NY 10027 USA
[18] Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA
[19] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA
[20] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA
[21] Depauw Univ, Dept Phys & Astron, Greencastle, IN 46135 USA
[22] Pittsburg State Univ, Dept Phys, Pittsburg, KS 66762 USA
[23] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA
[24] Anderson Univ, Dept Phys, Anderson, IN 46012 USA
[25] Galway Mayo Inst Technol, Dept Life & Phys Sci, Galway, Ireland
[26] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA
[27] Inst Astron & Fis Espacio, Buenos Aires, DF, Argentina
[28] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA
[29] Cork Inst Technol, Dept Appl Phys & Instrumentat, Cork, Ireland
[30] Astron Observ Trieste, INAF, I-34143 Trieste, Italy
[31] European So Observ, D-85748 Garching, Germany
[32] IASF Palermo, INAF, I-90146 Palermo, Italy
[33] IASF Roma, INAF, I-00133 Rome, Italy
[34] Univ Tor Vergata, Dip Fis, I-00133 Rome, Italy
[35] IASF Bologna, INAF, I-40129 Bologna, Italy
[36] IASF Milano, INAF, I-20133 Milan, Italy
[37] CIFS Torino, I-10133 Turin, Italy
[38] Dip Fis, I-34127 Trieste, Italy
[39] Ist Nazl Fis Nucl, I-34127 Trieste, Italy
[40] ENEA Frascati, I-00044 Frascati, Italy
[41] Ist Nazl Fis Nucl, I-27100 Pavia, Italy
[42] INFN Roma Tor Vergata, I-00133 Rome, Italy
[43] ENEA Bologna, I-40129 Bologna, Italy
[44] INFN Roma La Sapienza, I-00185 Rome, Italy
[45] CNR, IMIP, Rome, Italy
[46] Astron Observ Cagliari, INAF, I-09012 Capoterra, Italy
[47] Univ Insubria, Dip Fis, I-22100 Como, Italy
[48] ASI Sci Data Ctr, I-00044 Frascati, Roma, Italy
[49] Agenzia Spaziale Italiana, I-00198 Rome, Italy
[50] Osserv Astron Torino, INAF, Turin, Italy
基金
芬兰科学院; 加拿大自然科学与工程研究理事会; 美国国家科学基金会; 爱尔兰科学基金会;
关键词
BL Lacertae objects: individual (W Com); gamma rays: observations; BL-LACERTAE OBJECTS; GAMMA-RAY EMISSION; SPECTRAL ENERGY-DISTRIBUTIONS; AGILE SPACE MISSION; BACKGROUND-RADIATION; VERITAS OBSERVATIONS; LAC OBJECTS; SOURCE LIST; TELESCOPE; BLAZAR;
D O I
10.1088/0004-637X/707/1/612
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We report results from an intensive multiwavelength campaign on the intermediate-frequency-peaked BL Lacertae object W Com (z = 0.102) during a strong outburst of very high energy gamma-ray emission in 2008 June. The very high energy gamma-ray signal was detected by VERITAS on 2008 June 7-8 with a flux F(>200 GeV) = (5.7 +/- 0.6) x 10(-11) cm(-2) s(-1), about three times brighter than during the discovery of gamma-ray emission from W Com by VERITAS in 2008 March. The initial detection of this flare by VERITAS at energies above 200 GeV was followed by observations in high-energy gamma rays (AGILE; E-gamma >= 100 MeV), X-rays (Swift and XMM-Newton), and at UV, and ground-based optical and radio monitoring through the GASP-WEBT consortium and other observatories. Here we describe the multiwavelength data and derive the spectral energy distribution of the source from contemporaneous data taken throughout the flare.
引用
收藏
页码:612 / 620
页数:9
相关论文
共 48 条
[1]   FERMI/LARGE AREA TELESCOPE BRIGHT GAMMA-RAY SOURCE LIST [J].
Abdo, A. A. ;
Ackermann, M. ;
Ajello, M. ;
Atwood, W. B. ;
Axelsson, M. ;
Baldini, L. ;
Ballet, J. ;
Band, D. L. ;
Barbiellini, G. ;
Bastieri, D. ;
Battelino, M. ;
Baughman, B. M. ;
Bechtol, K. ;
Bellazzini, R. ;
Berenji, B. ;
Bignami, G. F. ;
Blandford, R. D. ;
Bloom, E. D. ;
Bonamente, E. ;
Borgland, A. W. ;
Bouvier, A. ;
Bregeon, J. ;
Brez, A. ;
Brigida, M. ;
Bruel, P. ;
Burnett, T. H. ;
Caliandro, G. A. ;
Cameron, R. A. ;
Caraveo, P. A. ;
Casandjian, J. M. ;
Cavazzuti, E. ;
Cecchi, C. ;
Charles, E. ;
Chekhtman, A. ;
Cheung, C. C. ;
Chiang, J. ;
Ciprini, S. ;
Claus, R. ;
Cohen-Tanugi, J. ;
Cominsky, L. R. ;
Conrad, J. ;
Corbet, R. ;
Costamante, L. ;
Cutini, S. ;
Davis, D. S. ;
Dermer, C. D. ;
de Angelis, A. ;
de Luca, A. ;
de Palma, F. ;
Digel, S. W. .
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2009, 183 (01) :46-66
[2]   BRIGHT ACTIVE GALACTIC NUCLEI SOURCE LIST FROM THE FIRST THREE MONTHS OF THE FERMI LARGE AREA TELESCOPE ALL-SKY SURVEY [J].
Abdo, A. A. ;
Ackermann, M. ;
Ajello, M. ;
Atwood, W. B. ;
Axelsson, M. ;
Baldini, L. ;
Ballet, J. ;
Barbiellini, G. ;
Bastieri, D. ;
Baughman, B. M. ;
Bechtol, K. ;
Bellazzini, R. ;
Blandford, R. D. ;
Bloom, E. D. ;
Bonamente, E. ;
Borgland, A. W. ;
Bouvier, A. ;
Bregeon, J. ;
Brez, A. ;
Brigida, M. ;
Bruel, P. ;
Burnett, T. H. ;
Caliandro, G. A. ;
Cameron, R. A. ;
Caraveo, P. A. ;
Casandjian, J. M. ;
Cavazzuti, E. ;
Cecchi, C. ;
Charles, E. ;
Chekhtman, A. ;
Chen, A. W. ;
Cheung, C. C. ;
Chiang, J. ;
Ciprini, S. ;
Claus, R. ;
Cohen-Tanugi, J. ;
Colafrancesco, S. ;
Collmar, W. ;
Cominsky, L. R. ;
Conrad, J. ;
Costamante, L. ;
Cutini, S. ;
Dermer, C. D. ;
de Angelis, A. ;
de Palma, F. ;
Digel, S. W. ;
do Couto e Silva, E. ;
Drell, P. S. ;
Dubois, R. ;
Dumora, D. .
ASTROPHYSICAL JOURNAL, 2009, 700 (01) :597-622
[3]   VERITAS discovery of >200 GeV gamma-ray emission from the intermediate-frequency-peaked BL Lacertae object W Comae [J].
Acciari, V. A. ;
Aliu, E. ;
Beilicke, M. ;
Benbow, W. ;
Boettcher, M. ;
Bradbury, S. M. ;
Buckley, J. H. ;
Bugaev, V. ;
Butt, Y. ;
Celik, O. ;
Cesarini, A. ;
Ciupik, L. ;
Chow, Y. C. K. ;
Cogan, P. ;
Colin, P. ;
Cui, W. ;
Daniel, M. K. ;
Ergin, T. ;
Falcone, A. D. ;
Fegan, S. J. ;
Finley, J. P. ;
Finnegan, G. ;
Fortin, P. ;
Fortson, L. F. ;
Furniss, A. ;
Gall, D. ;
Gillanders, G. H. ;
Grube, J. ;
Guenette, R. ;
Gyuk, G. ;
Hanna, D. ;
Hays, E. ;
Holder, J. ;
Horan, D. ;
Hui, C. M. ;
Humensky, T. B. ;
Imran, A. ;
Kaaret, P. ;
Karlsson, N. ;
Kertzman, M. ;
Kieda, D. B. ;
Konopelko, A. ;
Krawczynski, H. ;
Krennrich, F. ;
Lang, M. J. ;
LeBohec, S. ;
Lee, K. ;
Maier, G. ;
McCann, A. ;
McCutcheon, M. .
ASTROPHYSICAL JOURNAL LETTERS, 2008, 684 (02) :L73-L77
[4]   Veritas observations of the γ-ray binary LS I+61 303 [J].
Acciari, V. A. ;
Beilicke, M. ;
Blaylock, G. ;
Bradbury, S. M. ;
Buckley, J. H. ;
Bugaev, V. ;
Butt, Y. ;
Byrum, K. L. ;
Celik, O. ;
Cesarini, A. ;
Ciupik, L. ;
Chow, Y. C. K. ;
Cogan, P. ;
Colin, P. ;
Cui, W. ;
Daniel, M. K. ;
Duke, C. ;
Ergin, T. ;
Falcone, A. D. ;
Fegan, S. J. ;
Finley, J. P. ;
Fortin, P. ;
Fortson, L. F. ;
Gall, D. ;
Gibbs, K. ;
Gillanders, G. H. ;
Grube, J. ;
Guenette, R. ;
Hanna, D. ;
Hays, E. ;
Holder, J. ;
Horan, D. ;
Hughes, S. B. ;
Hui, C. M. ;
Humensky, T. B. ;
Kaaret, P. ;
Kieda, D. B. ;
Kildea, J. ;
Konopelko, A. ;
Krawczynski, H. ;
Krennrich, F. ;
Lang, M. J. ;
LeBohec, S. ;
Lee, K. ;
Maier, G. ;
McCann, A. ;
McCutcheon, M. ;
Millis, J. ;
Moriarty, P. ;
Mukherjee, R. .
ASTROPHYSICAL JOURNAL, 2008, 679 (02) :1427-1432
[5]   VERITAS OBSERVATIONS OF A VERY HIGH ENERGY γ-RAY FLARE FROM THE BLAZAR 3C 66A [J].
Acciari, V. A. ;
Aliu, E. ;
Arlen, T. ;
Beilicke, M. ;
Benbow, W. ;
Boettcher, M. ;
Bradbury, S. M. ;
Buckley, J. H. ;
Bugaev, V. ;
Butt, Y. ;
Byrum, K. ;
Cannon, A. ;
Celik, O. ;
Cesarini, A. ;
Chow, Y. C. ;
Ciupik, L. ;
Cogan, P. ;
Cui, W. ;
Daniel, M. K. ;
Dickherber, R. ;
Ergin, T. ;
Falcone, A. ;
Fegan, S. J. ;
Finley, J. P. ;
Fortin, P. ;
Fortson, L. ;
Furniss, A. ;
Gall, D. ;
Gibbs, K. ;
Gillanders, G. H. ;
Godambe, S. ;
Grube, J. ;
Guenette, R. ;
Gyuk, G. ;
Hanna, D. ;
Hays, E. ;
Holder, J. ;
Horan, D. ;
Hui, C. M. ;
Humensky, T. B. ;
Imran, A. ;
Kaaret, P. ;
Karlsson, N. ;
Kertzman, M. ;
Kieda, D. ;
Kildea, J. ;
Konopelko, A. ;
Krawczynski, H. ;
Krennrich, F. ;
Lang, M. J. .
ASTROPHYSICAL JOURNAL LETTERS, 2009, 693 (02) :L104-L108
[6]  
ACCIARI VA, 2008, APJ, V695, P1370
[7]   Evidence for TeV gamma ray emission from Cassiopeia A [J].
Aharonian, F ;
Akhperjanian, A ;
Barrio, J ;
Bernlöhr, K ;
Börst, H ;
Bojahr, H ;
Bolz, O ;
Contreras, J ;
Cortina, J ;
Denninghoff, S ;
Fonseca, V ;
Gonzalez, J ;
Götting, N ;
Heinzelmann, G ;
Hermann, G ;
Heusler, A ;
Hofmann, W ;
Horns, D ;
Ibarra, A ;
Iserlohe, C ;
Jung, I ;
Kankanyan, R ;
Kestel, M ;
Kettler, J ;
Kohnle, A ;
Konopelko, A ;
Kornmeyer, H ;
Kranich, D ;
Krawczynski, H ;
Lampeitl, H ;
Lopez, M ;
Lorenz, E ;
Lucarelli, F ;
Magnussen, N ;
Mang, O ;
Meyer, H ;
Mirzoyan, R ;
Moralejo, A ;
Ona, E ;
Padilla, L ;
Panter, M ;
Plaga, R ;
Plyasheshnikov, A ;
Prahl, J ;
Pühlhofer, G ;
Rauterberg, G ;
Röhring, A ;
Rhode, W ;
Rowell, GP ;
Sahakian, V .
ASTRONOMY & ASTROPHYSICS, 2001, 370 (01) :112-120
[8]   TeV gamma rays from BL Lac objects due to synchrotron radiation of extremely high energy protons [J].
Aharonian, FA .
NEW ASTRONOMY, 2000, 5 (07) :377-395
[9]   Very-high-energy gamma rays from a distant quasar:: How transparent is the universe? [J].
Albert, J. ;
Aliu, E. ;
Anderhub, H. ;
Antonelli, L. A. ;
Antoranz, P. ;
Backes, M. ;
Baixeras, C. ;
Barrio, J. A. ;
Bartko, H. ;
Bastieri, D. ;
Becker, J. K. ;
Bednarek, W. ;
Berger, K. ;
Bernardini, E. ;
Bigongiari, C. ;
Biland, A. ;
Bock, R. K. ;
Bonnoli, G. ;
Bordas, P. ;
Bosch-Ramon, V. ;
Bretz, T. ;
Britvitch, I. ;
Camara, M. ;
Carmona, E. ;
Chilingarian, A. ;
Commichau, S. ;
Contreras, J. L. ;
Cortina, J. ;
Costado, M. T. ;
Covino, S. ;
Curtef, V. ;
Dazzi, F. ;
De Angelis, A. ;
De Cea del Pozo, E. ;
de los Reyes, R. ;
De Lotto, B. ;
De Maria, M. ;
De Sabata, F. ;
Delgado Mendez, C. ;
Dominguez, A. ;
Dorner, D. ;
Doro, M. ;
Errando, M. ;
Fagiolini, M. ;
Ferenc, D. ;
Fernandez, E. ;
Firpo, R. ;
Fonseca, M. V. ;
Font, L. ;
Galante, N. .
SCIENCE, 2008, 320 (5884) :1752-1754
[10]   Discovery of very high energy γ-ray emission from the low-frequency-peaked Bl Lacertae object Bl Lacertae [J].
Albert, J. ;
Aliu, E. ;
Anderhub, H. ;
Antoranz, P. ;
Armada, A. ;
Baixeras, C. ;
Barrio, J. A. ;
Bartko, H. ;
Bastieri, D. ;
Becker, J. K. ;
Bednarek, W. ;
Berger, K. ;
Bigongiari, C. ;
Biland, A. ;
Bock, R. K. ;
Bordas, P. ;
Bosch-Ramon, V. ;
Bretz, T. ;
Britvitch, I. ;
Camara, M. ;
Carmona, E. ;
Chilingarian, A. ;
Coarasa, J. A. ;
Commichau, S. ;
Contreras, J. L. ;
Cortina, J. ;
Costado, M. T. ;
Curtef, V. ;
Danielyan, V. ;
Dazzi, F. ;
De Angelis, A. ;
Delgado, C. ;
Reyes, R. De Los ;
De Lotto, B. ;
Domingo-Santamaria, E. ;
Dorner, D. ;
Doro, M. ;
Errando, M. ;
Fagiolini, M. ;
Ferenc, D. ;
Fernandez, E. ;
Firpo, R. ;
Flix, J. ;
Fonseca, M. V. ;
Font, L. ;
Fuchs, M. ;
Galante, N. ;
Garcia-Lopez, R. ;
Garczarczyk, M. ;
Gaug, M. .
ASTROPHYSICAL JOURNAL, 2007, 666 (01) :L17-L20