期刊
ASTROPHYSICAL JOURNAL
卷 534, 期 2, 页码 L197-L198出版社
UNIV CHICAGO PRESS
DOI: 10.1086/312678
关键词
accretion, accretion disks; black hole physics; magnetic fields
The highest efficiency of converting rest mass into energy by accreting matter into a Kerr black hole is similar to 31% (Thorne 1974). We propose a new process in which periods of accretion from a thin disk, and the associated spin up of the black hole, alternate with the periods of no accretion and magnetic transfer of energy from the black hole to the disk. These cycles can repeat indefinitely, at feast in principle, with the black hole mast; increasing by similar to 66% per cycle and up to similar to 43% of accreted rest mass radiated away by the disk.
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