Gravitational collapse to a Kerr–Newman black hole
Abstract
We present the first systematic study of the gravitational collapse of rotating and magnetized neutron stars to charged and rotating (Kerr–Newman) black holes. In particular, we consider the collapse of magnetized and rotating neutron stars assuming that no pair-creation takes place and that the charge density in the magnetosphere is so low that the stellar exterior can be described as an electrovacuum. Under these assumptions, which are rather reasonable for a pulsar that has crossed the 'death line', we show that when the star is rotating, it acquires a net initial electrical charge, which is then trapped inside the apparent horizon of the newly formed back hole. We analyse a number of different quantities to validate that the black hole produced is indeed a Kerr–Newman one and show that, in the absence of rotation or magnetic field, the end result of the collapse is a Schwarzschild or Kerr black hole, respectively.
Additional Information
© 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. We thank the referee, I. Contopoulos, for his constructive criticism that has improved the presentation and the content of this Letter. It is a pleasure to thank K. Dionysopoulou and B. Mundim for help with the WHISKYRMHD code, and B. Ahmedov and O. Porth for useful discussions. Partial support comes from the ERC Synergy Grant 'BlackHoleCam' (Grant 610058), from 'NewCompStar', COST Action MP1304, from the LOEWE-Program in HIC for FAIR, from the European Union's Horizon 2020 Research and Innovation Programme (Grant 671698) (call FETHPC-1-2014, project ExaHyPE). AN is supported by an Alexander von Humboldt Fellowship. The simulations were performed on SuperMUC at LRZ-Munich, on LOEWE at CSC-Frankfurt and on Hazelhen at HLRS in Stuttgart.Attached Files
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Additional details
- Eprint ID
- 121238
- Resolver ID
- CaltechAUTHORS:20230501-297574000.63
- 610058
- European Research Council (ERC)
- MP1304
- European Cooperation in Science and Technology (COST)
- Helmholtz International Center for FAIR
- 671698
- European Research Council (ERC)
- Alexander von Humboldt Foundation
- Created
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2023-05-04Created from EPrint's datestamp field
- Updated
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2023-05-04Created from EPrint's last_modified field