Advanced search

(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

ON THE ROLE OF FAST MAGNETIC RECONNECTION IN ACCRETING BLACK HOLE SOURCES

Full text
Author(s):
Singh, C. B. [1] ; De Gouveia Dal Pino, E. M. [1] ; Kadowaki, L. H. S. [1]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Dept Astron IAG USP, Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Astrophysical Journal Letters; v. 799, n. 2 FEB 1 2015.
Web of Science Citations: 11
Abstract

We attempt to explain the observed radio and gamma-ray emission produced in the surroundings of black holes by employing a magnetically dominated accretion flow model and fast magnetic reconnection triggered by turbulence. In earlier work, a standard disk model was used and we refine the model by focusing on the sub-Eddington regime to address the fundamental plane of black hole activity. The results do not change substantially with regard to previous work, ensuring that the details of accretion physics are not relevant in the magnetic reconnection process occurring in the corona. Rather, our work puts fast magnetic reconnection events as a powerful mechanism operating in the core region near the jet base of black hole sources on more solid ground. For microquasars and low-luminosity active galactic nuclei, the observed correlation between radio emission and the mass of the sources can be explained by this process. The corresponding gamma-ray emission also seems to be produced in the same core region. On the other hand, emission from blazars and gamma-ray bursts cannot be correlated to core emission based on fast reconnection. (AU)

FAPESP's process: 13/09065-8 - Origin and collimation of compact source jets and acceleration mechanisms
Grantee:Chandra Bahadur Singh
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 11/51275-4 - Magnetic field effects and particle acceleration in gamma-ray bursts (GRBs): theory, numerical simulations, and observational prospects
Grantee:Elisabete Maria de Gouveia Dal Pino
Support type: Regular Research Grants