Magnetic field seed generation in plasmas around charged and rotating black holes

Asghar Qadir, Felipe A. Asenjo, Swadesh M. Mahajan

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Previous work by the authors introduced the possibility of generating seed magnetic fields by spacetime curvature and applied it in the vicinity of a Schwarzschild black hole. It was pointed out that it would be worthwhile to consider the effect in other background geometries and particularly in the vicinity of a rotating black hole, which is generically to be expected, astrophysically. In this paper that suggestion is followed up and we calculate generated magnetic field seed due to Reissner-Nördstrom and Kerr spacetimes. The conditions for the drive for the seed of a magnetic field is obtained for charged black holes, finding that in the horizon the drive vanishes. Also, the ψN-force produced by the Kerr black hole is obtained and its relation with the magnetic field seed is discussed, producing a more effective drive.

Original languageEnglish
Article number084002
JournalPhysica Scripta
Issue number8
StatePublished - 1 Aug 2014
Externally publishedYes


  • Kerr metric
  • general relativistic drive
  • seed magnetic field


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