Rapid variability, dying pulse trains and black holes

Details Rapid variability, dying pulse trains and black holes Rapid variability, dying pulse trains and black holes

Mar 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.190..715s&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 190, Mar. 1980, p. 715-722.

Astronomy and Astrophysics

Astronomy

15

Black Holes (Astronomy), Gravitational Effects, Variable Stars, Extragalactic Radio Sources, Galactic Nuclei, Stellar Luminosity, X Ray Sources

Scientific paper

After reviewing the general model and arguments by which rapid temporal variability and quasi-periodicities are considered indicative of a compact source's possible black hole character, the paper presents a scenario for 'dying pulse trains'. These originate inside the inner edge of accretion disks encircling black holes from accreting flares or other self-luminous entities executing their final few revolutions before reaching the event horizon. Confirmed detection of such phenomena with time scales in the range 0.01 (M/solar mass) to 0.5 (M/solar mass)ms, where M is the mass of the compact source, would provide much better support for its black hole candidacy. Variability on time-scales larger than this by itself places few constraints on the nature of the compact object.

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