Gamma-ray emission from massive stars interacting with active galactic nuclei jets

被引：49
作者：
Araudo, A. T. [1 ]
Bosch-Ramon, V. [2 ]
Romero, G. E. [3 ,4 ]
机构：
[1] Univ Nacl Autonoma Mexico, Ctr Radioastron & Astrofis, Morelia 58089, Michoacan, Mexico
[2] Univ Barcelona, Dept Astron & Meteorol, E-08028 Barcelona, Spain
[3] Inst Argentino Radioastron, Buenos Aires, DF, Argentina
[4] Univ Nacl La Plata, Fac Ciencias Astron &Geofis, RA-1900 La Plata, Argentina
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2013年 / 436卷 / 04期
关键词：
radiation mechanisms: non-thermal; stars: early-type; galaxies: active; gamma-rays: theory; HIGH-ENERGY EMISSION; BLACK-HOLES; SYNCHROTRON-RADIATION; MODELS; ACCELERATION; GALAXIES; ACCRETION; POWER; BASE;
D O I：
10.1093/mnras/stt1840
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Dense populations of stars surround the nuclear regions of galaxies. In active galactic nuclei, these stars can interact with the relativistic jets launched by the supermassive black hole. In this work, we study the interaction of early-type stars with relativistic jets in active galactic nuclei. A bow-shaped double-shock structure is formed as a consequence of the interaction of the jet and the stellar wind of each early-type star. Particles can be accelerated up to relativistic energies in these shocks and emit high-energy radiation. We compute, considering different stellar densities of the galactic core, the gamma-ray emission produced by non-thermal radiative processes. This radiation may be significant in some cases, and its detection might yield valuable information on the properties of the stellar population in the galaxy nucleus, as well as on the relativistic jet. This emission is expected to be particularly relevant for nearby non-blazar sources.
引用
收藏
页码：3626 / 3639
页数：14
相关论文
共 49 条
[1]   FERMI LARGE AREA TELESCOPE OBSERVATIONS OF MISALIGNED ACTIVE GALACTIC NUCLEI [J].
Abdo, A. A. ;
Ackermann, M. ;
Ajello, M. ;
Baldini, L. ;
Ballet, J. ;
Barbiellini, G. ;
Bastieri, D. ;
Bechtol, K. ;
Bellazzini, R. ;
Berenji, B. ;
Blandford, R. D. ;
Bloom, E. D. ;
Bonamente, E. ;
Borgland, A. W. ;
Bouvier, A. ;
Brandt, T. J. ;
Bregeon, J. ;
Brez, A. ;
Brigida, M. ;
Bruel, P. ;
Buehler, R. ;
Burnett, T. H. ;
Buson, S. ;
Caliandro, G. A. ;
Cameron, R. A. ;
Cannon, A. ;
Caraveo, P. A. ;
Carrigan, S. ;
Casandjian, J. M. ;
Cavazzuti, E. ;
Cecchi, C. ;
Celik, Oe ;
Celotti, A. ;
Charles, E. ;
Chekhtman, A. ;
Chen, A. W. ;
Cheung, C. C. ;
Chiang, J. ;
Ciprini, S. ;
Claus, R. ;
Cohen-Tanugi, J. ;
Colafrancesco, S. ;
Conrad, J. ;
Davis, D. S. ;
Dermer, C. D. ;
de Angelis, A. ;
de Palma, F. ;
do Couto e Silva, E. ;
Drell, P. S. ;
Dubois, R. .
ASTROPHYSICAL JOURNAL, 2010, 720 (01) :912-922
[2]   Particle acceleration by ultrarelativistic shocks: theory and simulations [J].
Achterberg, A ;
Gallant, YA ;
Kirk, JG ;
Guthmann, AW .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2001, 328 (02) :393-408
[3]   Proton-synchrotron radiation of large-scale jets in active galactic nuclei [J].
Aharonian, FA .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2002, 332 (01) :215-230
[4]   Stellar processes near the massive black hole in the Galactic center [J].
Alexander, T .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2005, 419 (2-3) :65-142
[5]   Gamma rays from cloud penetration at the base of AGN jets [J].
Araudo, A. T. ;
Bosch-Ramon, V. ;
Romero, G. E. .
ASTRONOMY & ASTROPHYSICS, 2010, 522
[6]   High-energy emission from jet-clump interactions in microquasars [J].
Araudo, A. T. ;
Bosch-Ramon, V. ;
Romero, G. E. .
ASTRONOMY & ASTROPHYSICS, 2009, 503 (03) :673-681
[7]   RAPID TeV VARIABILITY IN BLAZARS AS A RESULT OF JET-STAR INTERACTION [J].
Barkov, M. V. ;
Aharonian, F. A. ;
Bogovalov, S. V. ;
Kelner, S. R. ;
Khangulyan, D. .
ASTROPHYSICAL JOURNAL, 2012, 749 (02)
[8]   GAMMA-RAY FLARES FROM RED GIANT/JET INTERACTIONS IN ACTIVE GALACTIC NUCLEI [J].
Barkov, Maxim V. ;
Aharonian, Felix A. ;
Bosch-Ramon, Valenti .
ASTROPHYSICAL JOURNAL, 2010, 724 (02) :1517-1523
[9]   Gamma-rays from interactions of stars with active galactic nucleus jets [J].
Bednarek, W ;
Protheroe, RJ .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1997, 287 (03) :L9-L13
[10]   THEORY OF EXTRAGALACTIC RADIO-SOURCES [J].
BEGELMAN, MC ;
BLANDFORD, RD ;
REES, MJ .
REVIEWS OF MODERN PHYSICS, 1984, 56 (02) :255-351
12345