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Antoranz Canales, Pedro and Barrio Uña, Juan Abel and Contreras González, José Luis and Fonseca González, Mª Victoria and López Moya, Marcos and Miranda Pantoja, José Miguel and Satalecka, Konstanzja and Scapin, Valeria (2014) Black hole lightning due to particle acceleration at subhorizon scales. Science, 346 (6213). pp. 1080-1084. ISSN 0036-8075
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Official URL: http://dx.doi.org/10.1126/science.1256183
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.
Item Type: | Article |
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Additional Information: | © The authors. We would like to thank the Instituto de Astrofísica de Canarias for the excellent working conditions at the Observatorio del Roque de los Muchachos in La Palma. The support of the German BMBF and MPG, the Italian INFN, the Swiss National Fund SNF, and the Spanish MICINN is gratefully acknowledged. This work was also supported by the CPAN CSD2007-00042 and MultiDark CSD2009-00064 projects of the Spanish Consolider-Ingenio 2010 programme, by grant 127740 of the Academy of Finland, by the DFG Cluster of Excellence “Origin and Structure of the Universe”, by the Croatian Science Foundation (HrZZ) Projects 09/176, by the University of Rijeka Project 13.12.1.3.02, by the DFG Collaborative Research Centers SFB823/C4 and SFB876/C3, and by the Polish MNiSzW grant 745/N-ESSMAGIC/2010/0. |
Uncontrolled Keywords: | Gamma-ray emission; Active galactic nuclei; Fast TEV variability; Galaxy IC 310; Relativistic jets; Energy; M87; Blazars; Flare; PKS-2155-304. |
Subjects: | Sciences > Physics > Electricity Sciences > Physics > Electronics Sciences > Physics > Nuclear physics |
ID Code: | 29124 |
Deposited On: | 12 Mar 2015 10:01 |
Last Modified: | 10 Dec 2018 14:57 |
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