Electromagnetic partner of the gravitational signal during accretion onto black holes
Abstract
We investigate the generation of electromagnetic and gravitational radiation in the vicinity of a perturbed Schwarzschild black hole. The gravitational perturbations and the electromagnetic field are studied by solving the Teukolsky master equation with sources, which we take to be locally charged, radially infalling, matter. Our results show that, in addition to the gravitational wave generated as the matter falls into the black hole, there is also a burst of electromagnetic radiation. This electromagnetic field has a characteristic set of quasinormal frequencies, and the gravitational radiation has the quasinormal frequencies of a Schwarzschild black hole. This scenario allows us to compare the gravitational and electromagnetic signals that are generated by a common source.
 Publication:

General Relativity and Gravitation
 Pub Date:
 November 2014
 DOI:
 10.1007/s1071401418197
 arXiv:
 arXiv:1410.5785
 Bibcode:
 2014GReGr..46.1819D
 Keywords:

 Black holes;
 Gravitational waves;
 Electromagnetic waves;
 General Relativity and Quantum Cosmology
 EPrint:
 12 pages, six figures