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arxiv: 1412.4936 · v1 · submitted 2014-12-16 · 🌌 astro-ph.HE

Recognition: unknown

Black hole lightning due to particle acceleration at subhorizon scales

MAGIC Collaboration (and others): J. Aleksi\'c (1) , S. Ansoldi (2) , L. A. Antonelli (3) , P. Antoranz (4) , A. Babic (5) , P. Bangale (6) , J. A. Barrio (7) , J. Becerra Gonz\'alez (8
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25) W. Bednarek (9) E. Bernardini (10) B. Biasuzzi (2) A. Biland (11) O. Blanch (1) S. Bonnefoy (7) G. Bonnoli (3) F. Borracci (6) T. Bretz (12 26) E. Carmona (13) A. Carosi (3) P. Colin (6) E. Colombo (8) J. L. Contreras (7) J. Cortina (1) S. Covino (3) P. Da Vela (4) F. Dazzi (6) A. De Angelis (2) G. De Caneva (10) B. De Lotto (2) E. de O\~na Wilhelmi (14) C. Delgado Mendez (13) D. Dominis Prester (5) D. Dorner (12) M. Doro (15) S. Einecke (16) D. Eisenacher (12) D. Elsaesser (12) M. V. Fonseca (7) L. Font (17) K. Frantzen (16) C. Fruck (6) D. Galindo (18) R. J. Garc\'ia L\'opez (8) M. Garczarczyk (10) D. Garrido Terrats (17) M. Gaug (17) N. Godinovi\'c (5) A. Gonz\'alez Mu\~noz (1) S. R. Gozzini (10) D. Hadasch (14 27) Y. Hanabata (19) M. Hayashida (19) J. Herrera (8) D. Hildebrand (11) J. Hose (6) D. Hrupec (5) W. Idec (9) V. Kadenius (20) H. Kellermann (6) K. Kodani (19) Y. Konno (19) J. Krause (6) H. Kubo (19) J. Kushida (19) A. La Barbera (3) D. Lelas (5) N. Lewandowska (12) E. Lindfors (20 28) S. Lombardi (3) F. Longo (2) M. L\'opez (7) R. L\'opez-Coto (1) A. L\'opez-Oramas (1) E. Lorenz (6) I. Lozano (7) M. Makariev (21) K. Mallot (10) G. Maneva (21) N. Mankuzhiyil (2 29) K. Mannheim (12) L. Maraschi (3) B. Marcote (18) M. Mariotti (15) M. Mart\'inez (1) D. Mazin (6) U. Menzel (6) J. M. Miranda (4) R. Mirzoyan (6) A. Moralejo (1) P. Munar-Adrover (18) D. Nakajima (19) A. Niedzwiecki (9) K. Nilsson (20 K. Nishijima (19) K. Noda (6) R. Orito (19) A. Overkemping (16) S. Paiano (15) M. Palatiello (2) D. Paneque (6) R. Paoletti (4) J. M. Paredes (18) X. Paredes-Fortuny (18) M. Persic (2 30) J. Poutanen (20) P. G. Prada Moroni (22) E. Prandini (11) I. Puljak (5) R. Reinthal (20) W. Rhode (16) M. Rib\'o (18) J. Rico (1) J. Rodriguez Garcia (6) S. R\"ugamer (12) T. Saito (19) K. Saito (19) K. Satalecka (7) V. Scalzotto (15) V. Scapin (7) C. Schultz (15) T. Schweizer (6) S. N. Shore (22) A. Sillanp\"a\"a (20) J. Sitarek (1) I. Snidaric (5) D. Sobczynska (9) F. Spanier (12) V. Stamatescu (1 31) A. Stamerra (3) T. Steinbring (12) J. Storz (12) M. Strzys (6) L. Takalo (20) H. Takami (19) F. Tavecchio (3) P. Temnikov (21) T. Terzi\'c (5) D. Tescaro (8) M. Teshima (6 19) J. Thaele (16) O. Tibolla (12) D. F. Torres (23) T. Toyama (6) A. Treves (24) M. Uellenbeck (16) P. Vogler (11) R. Zanin (18) M. Kadler (12) R. Schulz (12 32) E. Ros (33 34 35) U. Bach (33) F. Krau{\ss} (12 J. Wilms (32) ((1) IFAE Campus UAB E-08193 Bellaterra Spain (2) Universit\`a di Udine INFN Trieste I-33100 Udine Italy (3) INAF National Institute for Astrophysics I-00136 Rome (4) Universit\`a di Siena INFN Pisa I-53100 Siena (5) Croatian MAGIC Consortium Rudjer Boskovic Institute University of Rijeka University of Split HR-10000 Zagreb Croatia (6) Max-Planck-Institut f\"ur Physik D-80805 M\"unchen Germany (7) Universidad Complutense E-28040 Madrid Spain (8) Inst. de Astrof\'isica de Canarias E-38200 La Laguna Tenerife (9) University of {\L}\'od\'z PL-90236 Lodz Poland (10) Deutsches Elektronen-Synchrotron (DESY) D-15738 Zeuthen (11) ETH Zurich CH-8093 Zurich Switzerland (12) Universit\"at W\"urzburg D-97074 W\"urzburg (13) Centro de Investigaciones Energ\'eticas Medioambientales y Tecnol\'ogicas (14) Institute of Space Sciences E-08193 Barcelona (15) Universit\`a di Padova INFN I-35131 Padova (16) Technische Universit\"at Dortmund D-44221 Dortmund (17) Unitat de F\'isica de les Radiacions Departament de F\'isica CERES-IEEC Universitat Aut\`onoma de Barcelona (18) Universitat de Barcelona ICC IEEC-UB E-08028 Barcelona (19) Japanese MAGIC Consortium Division of Physics Astronomy Kyoto University Japan (20) Finnish MAGIC Consortium Tuorla Observatory University of Turku Department of Physics University of Oulu Finland (21) Inst. for Nucl. Research Nucl. Energy BG-1784 Sofia Bulgaria (22) Universit\`a di Pisa I-56126 Pisa (23) ICREA Institute of Space Sciences (24) Universit\`a dell'Insubria INFN Milano Bicocca Como I-22100 Como (25) now at: NASA Goddard Space Flight Center Greenbelt MD 20771 USA Department of Astronomy University of Maryland College Park MD 20742 (26) now at Ecole polytechnique f\'ed\'erale de Lausanne (EPFL) Lausanne (27) Now at Institut f\"ur Astro- und Teilchenphysik Leopold-Franzens- Universit\"at Innsbruck A-6020 Innsbruck Austria (28) now at Finnish Centre for Astronomy with ESO (FINCA) Turku (29) now at Astrophysics Science Division Bhabha Atomic Research Centre Mumbai 400085 India (30) also at INAF-Trieste (31) now at School of Chemistry & Physics University of Adelaide Adelaide 5005 Australia (32) Dr. Remeis-Sternwarte Bamberg Astronomisches Institut der Universit\"at Erlangen-N\"urnberg ECAP D-96049 Bamberg (33) Max-Planck-Institut f\"ur Radioastronomie D-53121 Bonn German (34) Observatori Astron\`omic Universitat de Val\`encia E-46980 Paterna Val\`encia (35) Departament d'Astronomia i Astrof\'isica E-46100 Burjassot Spain)
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classification 🌌 astro-ph.HE
keywords blackemissionradioaccelerationholemassesparticlescales
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read the original abstract

Supermassive black holes with masses of millions to billions of solar masses are commonly found in the centers of galaxies. Astronomers seek to image jet formation using radio interferometry, but still suffer from insufficient angular resolution. An alternative method to resolve small structures is to measure the time variability of their emission. Here, we report on gamma-ray observations of the radio galaxy IC 310 obtained with the MAGIC telescopes revealing variability with doubling time scales faster than 4.8 min. Causality constrains the size of the emission region to be smaller than 20\% of the gravitational radius of its central black hole. We suggest that the emission is associated with pulsar-like particle acceleration by the electric field across a magnetospheric gap at the base of the radio jet.

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