Gamma-ray flares from the jet of the blazar CTA 102 in 2016-2018

被引：0

作者：

Kim, Sanghyun ^{[1
,2
]}

Lee, Sang-Sung ^{[1
,2
]}

Algaba, Juan Carlos ^{[3
]}

Rani, Bindu ^{[4
,5
]}

Park, Jongho ^{[6
,7
]}

Jeong, Hyeon-Woo ^{[1
,2
]}

Cheong, Whee Yeon ^{[1
,2
]}

D'Ammando, Filippo ^{[8
]}

Lahteenmaki, Anne ^{[9
,10
]}

Tornikoski, Merja ^{[9
]}

Tammi, Joni ^{[9
]}

Ramakrishnan, Venkatessh ^{[9
,11
]}

Agudo, Ivan ^{[12
]}

Casadio, Carolina ^{[13
,14
]}

Escudero, Juan ^{[12
]}

Fuentes, Antonio ^{[12
]}

Traianou, Efthalia ^{[12
]}

Myserlis, Ioannis ^{[15
]}

Thum, Clemens ^{[15
]}

机构：

[1] Korea Astron & Space Sci Inst, 776 Daedeok Daero, Daejeon 34055, South Korea

[2] Univ Sci & Technol, Dept Astron & Space Sci, 217 Gajeong Ro, Daejeon 34113, South Korea

[3] Univ Malaya, Fac Sci, Dept Phys, Kuala Lumpur 50603, Malaysia

[4] NASA, Greenbelt, MD 20771 USA

[5] Amer Univ, Dept Phys, Washington, DC 20016 USA

[6] Kyung Hee Univ, Sch Space Res, 1732 Deogyeong Daero, Yongin 17104, Gyeonggi Do, South Korea

[7] Acad Sinica, Inst Astron & Astrophys, POB 23-141, Taipei 10617, Taiwan

[8] INAF Ist Radioastron, Via Gobetti 101, I-40129 Bologna, Italy

[9] Aalto Univ, Metsahovi Radio Observ, Metsahovintie 114, Kylmala 02540, Finland

[10] Aalto Univ, Dept Elect & Nanoengn, POB 15500, FI-00076 Aalto, Finland

[11] Univ Turku, Finnish Ctr Astron ESO FINCA, Vesilinnantie 5, Turku 20014, Finland

[12] CSIC, Inst Astrofis Andalucia, E-18008 Granada, Spain

[13] Fdn Res & Technol Hellas, Inst Astrophys, Iraklion 7110, Greece

[14] Univ Crete, Dept Phys, Iraklion 71003, Greece

[15] Inst Radio Astron Milimetr, Ave Divina Pastora 7,Local 20, E-18012 Granada, Spain

来源：

ASTRONOMY & ASTROPHYSICS | 2025年 / 694卷

基金：

新加坡国家研究基金会; 瑞典研究理事会; 美国国家航空航天局; 欧洲研究理事会;

关键词：

radiation mechanisms: non-thermal; galaxies: active; galaxies: jets; gamma rays: galaxies; quasars: individual: CTA 102; LARGE-AREA TELESCOPE; ACTIVE GALACTIC NUCLEI; EXTRAGALACTIC RADIO-SOURCES; PARSEC-SCALE JETS; SIMULTANEOUS X-RAY; RELATIVISTIC JET; FLARING ACTIVITY; LIGHT CURVES; MILLIMETER WAVELENGTHS; CROSS-CORRELATIONS;

D O I：

10.1051/0004-6361/202450003

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

CTA 102 is a gamma-ray bright blazar that exhibited multiple flares in observations by the Large Area Telescope on board the Fermi Gamma-Ray Space Telescope during the period of 2016-2018. We present results from the analysis of multi-wavelength light curves with the aim of revealing the nature of gamma-ray flares from the relativistic jet in the blazar. We analysed radio, optical, X-ray, and gamma-ray data obtained in a period from 2012 September 29 to 2018 October 8. We identified six flares in the gamma-ray light curve, showing a harder-when-brighter trend in the gamma-ray spectra. We performed a cross-correlation analysis of the multi-wavelength light curves. We found nearly zero time lags between the gamma-ray and optical and X-ray light curves, implying a common spatial origin for the emission in these bands. We found significant correlations between the gamma-ray and radio light curves as well as negative or positive time lags with the gamma-ray emission lagging or leading the radio during different flaring periods. The time lags between the gamma-ray and radio emission propose the presence of multiple gamma-ray emission sites in the source. As seen in 43 GHz images from the Very Long Baseline Array, two moving disturbances (or shocks) were newly ejected from the radio core. The gamma-ray flares from 2016 to 2017 are temporally coincident with the interaction between a travelling shock and a quasi-stationary one at similar to 0.1 mas from the core. The other shock was found to have emerged from the core nearly simultaneously with the gamma-ray flare in 2018. Our results suggest that the gamma-ray flares originated from shock-shock interactions.

引用

页数：14

共 116 条

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Ajello, M.
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Britto, R. J.
Bruel, P.
Buehler, R.
Burnett, T. H.
Buson, S.
Caliandro, G. A.
Cameron, R. A.
Caputo, R.
Caragiulo, M.
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← 1 2 3 4 5 6 7 8 9 10 →

共 116 条

[1] FERMI LARGE AREA TELESCOPE AND MULTI-WAVELENGTH OBSERVATIONS OF THE FLARING ACTIVITY OF PKS 1510-089 BETWEEN 2008 SEPTEMBER AND 2009 JUNE
Abdo, A. A.
Ackermann, M.
Agudo, I.
Ajello, M.
Allafort, A.
Aller, H. D.
Aller, M. F.
Antolini, E.
Arkharov, A. A.
Axelsson, M.
Bach, U.
Baldini, L.
Ballet, J.
Barbiellini, G.
Bastieri, D.
Bechtol, K.
Bellazzini, R.
Berdyugin, A.
Berenji, B.
Blandford, R. D.
Blinov, D. A.
Bloom, E. D.
Boettcher, M.
Bonamente, E.
Borgland, A. W.
Bouvier, A.
Bregeon, J.
Brez, A.
Brigida, M.
Bruel, P.
Buehler, R.
Buemi, C. S.
Burnett, T. H.
Buson, S.
Caliandro, G. A.
Cameron, R. A.
Caraveo, P. A.
Carosati, D.
Carrigan, S.
Casandjian, J. M.
Cavazzuti, E.
Cecchi, C.
Celik, Oe
Chekhtman, A.
Chen, W. P.
Cheung, C. C.
Chiang, J.
Ciprini, S.
Claus, R.
Cohen-Tanugi, J.
[J]. ASTROPHYSICAL JOURNAL, 2010, 721 (02) : 1425 - 1447
[2] FERMI LARGE AREA TELESCOPE FIRST SOURCE CATALOG
Abdo, A. A.
Ackermann, M.
Ajello, M.
Allafort, A.
Antolini, E.
Atwood, W. B.
Axelsson, M.
Baldini, L.
Ballet, J.
Barbiellini, G.
Bastieri, D.
Baughman, B. M.
Bechtol, K.
Bellazzini, R.
Belli, F.
Berenji, B.
Bisello, D.
Blandford, R. D.
Bloom, E. D.
Bonamente, E.
Bonnell, J.
Borgland, A. W.
Bouvier, A.
Bregeon, J.
Brez, A.
Brigida, M.
Bruel, P.
Burnett, T. H.
Busetto, G.
Buson, S.
Caliandro, G. A.
Cameron, R. A.
Campana, R.
Canadas, B.
Caraveo, P. A.
Carrigan, S.
Casandjian, J. M.
Cavazzuti, E.
Ceccanti, M.
Cecchi, C.
Celik, Oe.
Charles, E.
Chekhtman, A.
Cheung, C. C.
Chiang, J.
Cillis, A. N.
Ciprini, S.
Claus, R.
Cohen-Tanugi, J.
Conrad, J.
[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2010, 188 (02) : 405 - 436
[3] A change in the optical polarization associated with a γ-ray flare in the blazar 3C 279
Abdo, A. A.
Ackermann, M.
Ajello, M.
Axelsson, M.
Baldini, L.
Ballet, J.
Barbiellini, G.
Bastieri, D.
Baughman, B. M.
Bechtol, K.
Bellazzini, R.
Berenji, B.
Blandford, R. D.
Bloom, E. D.
Bock, D. C. -J.
Bogart, J. R.
Bonamente, E.
Borgland, A. W.
Bouvier, A.
Bregeon, J.
Brez, A.
Brigida, M.
Bruel, P.
Burnett, T. H.
Buson, S.
Caliandro, G. A.
Cameron, R. A.
Caraveo, P. A.
Casandjian, J. M.
Cavazzuti, E.
Cecchi, C.
Celik, Oe
Chekhtman, A.
Cheung, C. C.
Chiang, J.
Ciprini, S.
Claus, R.
Cohen-Tanugi, J.
Collmar, W.
Cominsky, L. R.
Conrad, J.
Corbel, S.
Corbet, R.
Costamante, L.
Cutini, S.
Dermer, C. D.
de Angelis, A.
de Palma, F.
Digel, S. W.
do Couto e Silva, E.
[J]. NATURE, 2010, 463 (7283) : 919 - 923
[4] Fermi Large Area Telescope Fourth Source Catalog
Abdollahi, S.
Acero, F.
Ackermann, M.
Ajello, M.
Atwood, W. B.
Axelsson, M.
Baldini, L.
Ballet, J.
Barbiellini, G.
Bastieri, D.
Becerra Gonzalez, J.
Bellazzini, R.
Berretta, A.
Bissaldi, E.
Blandford, R. D.
Bloom, E. D.
Bonino, R.
Bottacini, E.
Brandt, T. J.
Bregeon, J.
Bruel, P.
Buehler, R.
Burnett, T. H.
Buson, S.
Cameron, R. A.
Caputo, R.
Caraveo, P. A.
Casandjian, J. M.
Castro, D.
Cavazzuti, E.
Charles, E.
Chaty, S.
Chen, S.
Cheung, C. C.
Chiaro, G.
Ciprini, S.
Cohen-Tanugi, J.
Cominsky, L. R.
Coronado-Blazquez, J.
Costantin, D.
Cuoco, A.
Cutini, S.
D'Ammando, F.
DeKlotz, M.
Luque, P. de la Tone
de Palma, F.
Desai, A.
Digel, S. W.
Di Lalla, N.
Di Mauro, M.
[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2020, 247 (01)
[5] Unraveling the Complex Behavior of Mrk 421 with Simultaneous X-Ray and VHE Observations during an Extreme Flaring Activity in 2013 April*
Acciari, V. A.
Ansoldi, S.
Antonelli, L. A.
Engels, A. Arbet
Baack, D.
Babic, A.
Banerjee, B.
Barres de Almeida, U.
Barrio, J. A.
Becerra Gonzalez, J.
Bednarek, W.
Bellizzi, L. K.
Bernardini, E.
Berti, A.
Besenrieder, J.
Bhattacharyya, W.
Bigongiari, C.
Biland, A.
Blanch, O.
Bonnoli, G.
Bosnjak, Z.
Busetto, G.
Carosi, R.
Ceribella, G.
Cerruti, M.
Chai, Y.
Chilingarian, A.
Cikota, S.
Colak, S. M.
Colin, U.
Colombo, E.
Contreras, J. L.
Cortina, J.
Covino, S.
D'Elia, V
Da Vela, P.
Dazzi, F.
De Angelis, A.
De Lotto, B.
Del Puppo, F.
Delfino, M.
Delgado, J.
Depaoli, D.
Di Pierro, F.
Di Venere, L.
Do Souto Espineira, E.
Prester, D. Dominis
Donini, A.
Dorner, D.
Doro, M.
[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2020, 248 (02)
[6] FERMI LARGE AREA TELESCOPE THIRD SOURCE CATALOG
Acero, F.
Ackermann, M.
Ajello, M.
Albert, A.
Atwood, W. B.
Axelsson, M.
Baldini, L.
Ballet, J.
Barbiellini, G.
Bastieri, D.
Belfiore, A.
Bellazzini, R.
Bissaldi, E.
Blandford, R. D.
Bloom, E. D.
Bogart, J. R.
Bonino, R.
Bottacini, E.
Bregeon, J.
Britto, R. J.
Bruel, P.
Buehler, R.
Burnett, T. H.
Buson, S.
Caliandro, G. A.
Cameron, R. A.
Caputo, R.
Caragiulo, M.
Caraveo, P. A.
Casandjian, J. M.
Cavazzuti, E.
Charles, E.
Chaves, R. C. G.
Chekhtman, A.
Cheung, C. C.
Chiang, J.
Chiaro, G.
Ciprini, S.
Claus, R.
Cohen-Tanugi, J.
Cominsky, L. R.
Conrad, J.
Cutini, S.
D'Ammando, F.
de Angelis, A.
DeKlotz, M.
de Palma, F.
Desiante, R.
Digel, S. W.
Di Venere, L.
[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2015, 218 (02)
[7] POLAMI: Polarimetric Monitoring of AGN at Millimetre Wavelengths - I. The programme, calibration and calibrator data products
Agudo, Ivan
Thum, Clemens
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