Meeting the Challenge from Bright and Fast Gamma-Ray Flares of 3C 279

被引：13

作者：

Vittorini, V. ^{[1
]}

Tavani, M. ^{[1
,2
,3
,4
]}

Cavaliere, A. ^{[1
,4
]}

机构：

[1] INAF IAPS Roma, Via Fosso Cavaliere 100, I-00133 Rome, Italy

[2] Univ Tor Vergata, Dipartimento Fis, Via Ric Sci 1, I-00133 Rome, Italy

[3] Gran Sasso Sci Inst, Viale Francesco Crispi 7, I-67100 Laquila, Italy

[4] Accademia Nazl Lincei, Astron, Via Lungara 10, I-00165 Rome, Italy

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2017年 / 843卷 / 02期

关键词：

galaxies: active; galaxies: individual (3C 279); galaxies: jets; gamma rays: galaxies; gamma rays: general; BLAZAR FLARES; FERMI-LAT; EMISSION; QUASAR; VARIABILITY; 3C-279; MODEL; JET; RECONNECTION;

D O I：

10.3847/2041-8213/aa767f

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Bright and fast gamma-ray flares with hard spectra have been recently detected from the blazar 3C 279, with apparent GeV luminosities up to 10(49) erg s(-1). The source is observed to flicker on timescales of minutes with no comparable optical-UV counterparts. Such observations challenge current models of high-energy emissions from 3C 279 and similar blazar sources that are dominated by relativistic jets along our line of sight with bulk Lorentz factors up to T similar to 20 launched by supermassive black holes. We compute and discuss a model based on a clumpy jet comprising strings of compact plasmoids as indicated by radio observations. We follow the path of the synchrotron radiations emitted in the optical-UV bands by relativistic electrons accelerated around the plasmoids to isotropic Lorentz factors gamma similar to 10(3). These primary emissions are partly reflected back by a leading member in the string that acts as a moving mirror for the approaching companions. Around the plasmoids, shrinking gap transient overdensities of seed photons build up. These are upscattered into the GeV range by inverse Compton interactions with the relativistic electrons accelerated in situ. We show that such a combined process produces bright gammaray flares with minor optical to X-ray enhancements. Main features of our model include: bright gamma-ray flares with risetimes as short as a few minutes, occurring at distances of order 10(18) cm from the central black hole; Compton dominance at GeV energies by factors up to some 10(2) ; minimal reabsorption from local photon-photon interactions.

引用

页数：5

共 30 条

[1] MINUTE-TIMESCALE > 100 MeV γ-RAY VARIABILITY DURING THE GIANT OUTBURST OF QUASAR 3C 279 OBSERVED BY FERMI-LAT IN 2015 JUNE [J].

Ackermann, M. ;

Anantua, R. ;

Asano, K. ;

Baldini, L. ;

Barbiellini, G. ;

Bastieri, D. ;

Gonzalez, J. Becerra ;

Bellazzini, R. ;

Bissaldi, E. ;

Blandford, R. D. ;

Bloom, E. D. ;

Bonino, R. ;

Bottacini, E. ;

Bruel, P. ;

Buehler, R. ;

Caliandro, G. A. ;

Cameron, R. A. ;

Caragiulo, M. ;

Caraveo, P. A. ;

Cavazzuti, E. ;

Cecchi, C. ;

Cheung, C. C. ;

Chiang, J. ;

Chiaro, G. ;

Ciprini, S. ;

Cohen-Tanugi, J. ;

Costanza, F. ;

Cutini, S. ;

D'Ammando, F. ;

De Palma, F. ;

Desiante, R. ;

Digel, S. W. ;

Di Lalla, N. ;

Di Mauro, M. ;

Di Venere, L. ;

Drell, P. S. ;

Favuzzi, C. ;

Fegan, S. J. ;

Ferrara, E. C. ;

Fukazawa, Y. ;

Funk, S. ;

Fusco, P. ;

Gargano, F. ;

Gasparrini, D. ;

Giglietto, N. ;

Giordano, F. ;

Giroletti, M. ;

Grenier, I. A. ;

Guillemot, L. ;

Guiriec, S. .

ASTROPHYSICAL JOURNAL LETTERS, 2016, 824 (02)

[2] 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

[3] MAGIC DISCOVERY OF VERY HIGH ENERGY EMISSION FROM THE FSRQ PKS 1222+21 [J].

Aleksic, J. ;

Antonelli, L. A. ;

Antoranz, P. ;

Backes, M. ;

Barrio, J. A. ;

Bastieri, D. ;

Becerra Gonzalez, J. ;

Bednarek, W. ;

Berdyugin, A. ;

Berger, K. ;

Bernardini, E. ;

Biland, A. ;

Blanch, O. ;

Bock, R. K. ;

Boller, A. ;

Bonnoli, G. ;

Tridon, D. Borla ;

Braun, I. ;

Bretz, T. ;

Canellas, A. ;

Carmona, E. ;

Carosi, A. ;

Colin, P. ;

Colombo, E. ;

Contreras, J. L. ;

Cortina, J. ;

Cossio, L. ;

Covino, S. ;

Dazzi, F. ;

De Angelis, A. ;

De Cea del Pozo, E. ;

De Lotto, B. ;

Delgado Mendez, C. ;

Diago Ortega, A. ;

Doert, M. ;

Dominguez, A. ;

Prester, D. Dominis ;

Dorner, D. ;

Doro, M. ;

Elsaesser, D. ;

Ferenc, D. ;

Fonseca, M. V. ;

Font, L. ;

Fruck, C. ;

Garcia Lopez, R. J. ;

Garczarczyk, M. ;

Garrido, D. ;

Giavitto, G. ;

Godinovic, N. ;

Hadasch, D. .

ASTROPHYSICAL JOURNAL LETTERS, 2011, 730 (01)

[4]

[Anonymous], 2016, ApJ

[5] LEPTONIC AND HADRONIC MODELING OF FERMI-DETECTED BLAZARS [J].

Boettcher, M. ;

Reimer, A. ;

Sweeney, K. ;

Prakash, A. .

ASTROPHYSICAL JOURNAL, 2013, 768 (01)

[6] On Compton scattering scenarios for blazar flares [J].

Bottcher, M ;

Dermer, CD .

ASTROPHYSICAL JOURNAL, 1998, 501 (01) :L51-L54

[7] Electron-scale measurements of magnetic reconnection in space [J].

Burch, J. L. ;

Torbert, R. B. ;

Phan, T. D. ;

Chen, L. -J. ;

Moore, T. E. ;

Ergun, R. E. ;

Eastwood, J. P. ;

Gershman, D. J. ;

Cassak, P. A. ;

Argall, M. R. ;

Wang, S. ;

Hesse, M. ;

Pollock, C. J. ;

Giles, B. L. ;

Nakamura, R. ;

Mauk, B. H. ;

Fuselier, S. A. ;

Russell, C. T. ;

Strangeway, R. J. ;

Drake, J. F. ;

Shay, M. A. ;

Khotyaintsev, Yu. V. ;

Lindqvist, P. -A. ;

Marklund, G. ;

Wilder, F. D. ;

Young, D. T. ;

Torkar, K. ;

Goldstein, J. ;

Dorelli, J. C. ;

Avanov, L. A. ;

Oka, M. ;

Baker, D. N. ;

Jaynes, A. N. ;

Goodrich, K. A. ;

Cohen, I. J. ;

Turner, D. L. ;

Fennell, J. F. ;

Blake, J. B. ;

Clemmons, J. ;

Goldman, M. ;

Newman, D. ;

Petrinec, S. M. ;

Trattner, K. J. ;

Lavraud, B. ;

Reiff, P. H. ;

Baumjohann, W. ;

Magnes, W. ;

Steller, M. ;

Lewis, W. ;

Saito, Y. .

SCIENCE, 2016, 352 (6290)

[8] Blazar Jets Perturbed by Magneto-gravitational Stresses in Supermassive Binaries [J].

Cavaliere, A. ;

Tavani, M. ;

Vittorini, V. .

ASTROPHYSICAL JOURNAL, 2017, 836 (02)

[9] The power of blazar jets [J].

Celotti, Annalisa ;

Ghiselllni, Gabriele .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2008, 385 (01) :283-300

[10]

Coppi P., 2016, 14 AGILE M AGILE WAV

← 1 2 3 →