On the role of black hole spin and accretion in powering relativistic jets in AGN

被引：20

作者：

Maraschi, Laura ^{[1
]}

Colpi, Monica ^{[2
]}

Ghisellini, Gabriele ^{[3
]}

Perego, Albino ^{[2
]}

Tavecchio, Fabrizio ^{[3
]}

机构：

[1] INAF Osservatorio Astron Brera, Via Brera 28, I-20100 Milan, Italy

[2] INFN Sezione Milano Bicocca, Milan I-20126, Italy

[3] INAF Osservatorio Astronomico Brera, Merate I-23807, Italy

来源：

INTERNATIONAL WORKSHOP ON BEAMED AND UNBEAMED GAMMA-RAYS FROM GALAXIES | 2012年 / 355卷

关键词：

ACTIVE GALACTIC NUCLEI; FERMI BLAZARS; MAGNETOHYDRODYNAMIC SIMULATIONS; EXTRACTING ENERGY; RADIO JETS; DISK; UNIFICATION;

D O I：

10.1088/1742-6596/355/1/012016

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Motivated by the remarkable results on the general properties of blazars obtained from Fermi observations we discuss the role of spin and accretion in powering relativistic jets in AGNs. We consider studies of the Blandford-Znajek mechanism taking into account advection of magnetic flux from an accretion disk surrounding the Black Hole (BH) which indicate that the mechanism is inhibited for values of the BH spin a less than or similar to 0.5. However large scale propagation of the jet with highly relativistic bulk acceleration likely requires even larger spin values. The Blandford-Znajek mechanism then predicts a tight connection between jet power and accretion power, accounting for the correlation between gamma-ray luminosity and accretion disk luminosity found in the bright Fermi blazar sample. The suggested spin threshold would lead to a grand unification of AGN based on only two intrinsic parameters: the BH spin and the accretion rate in Eddington units.

引用

页数：7

共 33 条

[1] THE SPECTRAL ENERGY DISTRIBUTION OF FERMI BRIGHT BLAZARS [J].

Abdo, A. A. ;

Ackermann, M. ;

Agudo, I. ;

Ajello, M. ;

Aller, H. D. ;

Aller, M. F. ;

Angelakis, E. ;

Arkharov, A. A. ;

Axelsson, M. ;

Bach, U. ;

Baldini, L. ;

Ballet, J. ;

Barbiellini, G. ;

Bastieri, D. ;

Baughman, B. M. ;

Bechtol, K. ;

Bellazzini, R. ;

Benitez, E. ;

Berdyugin, A. ;

Berenji, B. ;

Blandford, R. D. ;

Bloom, E. D. ;

Boettcher, M. ;

Bonamente, E. ;

Borgland, A. W. ;

Bregeon, J. ;

Brez, A. ;

Brigida, M. ;

Bruel, P. ;

Burnett, T. H. ;

Burrows, D. ;

Buson, S. ;

Caliandro, G. A. ;

Calzoletti, L. ;

Cameron, R. A. ;

Capalbi, M. ;

Caraveo, P. A. ;

Carosati, D. ;

Casandjian, J. M. ;

Cavazzuti, E. ;

Cecchi, C. ;

Celik, Oe. ;

Charles, E. ;

Chaty, S. ;

Chekhtman, A. ;

Chen, W. P. ;

Chiang, J. ;

Chincarini, G. ;

Ciprini, S. ;

Claus, R. .

ASTROPHYSICAL JOURNAL, 2010, 716 (01) :30-70

[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] THEORY OF EXTRAGALACTIC RADIO-SOURCES [J].

BEGELMAN, MC ;

BLANDFORD, RD ;

REES, MJ .

REVIEWS OF MODERN PHYSICS, 1984, 56 (02) :255-351

[4] HYDROMAGNETIC FLOWS FROM ACCRETION DISKS AND THE PRODUCTION OF RADIO JETS [J].

BLANDFORD, RD ;

PAYNE, DG .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1982, 199 (03) :883-903

[5] ELECTROMAGNETIC EXTRACTION OF ENERGY FROM KERR BLACK-HOLES [J].

BLANDFORD, RD ;

ZNAJEK, RL .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1977, 179 (02) :433-456

[6]

BLANDFORD RD, 1990, SAAS FEE ADV COURSE, V20

[7]

Cavaliere A., 1985, APJ, V296, P415

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

Celotti, Annalisa ;

Ghiselllni, Gabriele .

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

[9] High-redshift Fermi blazars [J].

Ghisellini, G. ;

Tagliaferri, G. ;

Foschini, L. ;

Ghirlanda, G. ;

Tavecchio, F. ;

Della Ceca, R. ;

Haardt, F. ;

Volonteri, M. ;

Gehrels, N. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2011, 411 (02) :901-914

[10] General physical properties of bright Fermi blazars [J].

Ghisellini, G. ;

Tavecchio, F. ;

Foschini, L. ;

Ghirlanda, G. ;

Maraschi, L. ;

Celotti, A. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2010, 402 (01) :497-518

← 1 2 3 4 →