Comments on the optical and radio detection of black hole explosions

Details Comments on the optical and radio detection of black hole explosions Comments on the optical and radio detection of black hole explosions

Jun 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977natur.267..499j&link_type=abstract

Nature, vol. 267, June 9, 1977, p. 499, 500. Research supported by the Atomic Energy Research Establishment.

Astronomy and Astrophysics

Astronomy

11

Black Holes (Astronomy), Light Emission, Radio Astronomy, Astronomical Models, Explosions, Magnetic Effects, X Ray Astronomy

Scientific paper

Optical and radio techniques for detecting black hole explosions are compared. An optical search for shocks from minihole explosions would have two practical advantages over radio in that first, the fractional bandwidth which can be used is large, approximately 0.4; and second, the only known sources in the optical band of very short pulses arise from Cerenkov flashes. Detectors with shorter response times than those presently available would be required. Perhaps five stations with spaced flux collectors (rather than telescopes) would be needed to suppress the chance-rate arising from Cerenkov flashes. A problem with radio techniques is that bandwidth-limited interference pulses are always observed at radio frequencies, although dispersion can be used to advantage for a celestial source. Upper limits of obtainable explosion rate data are compared for two radio systems, one using small wide-field-of-view antennas run for long periods, and the other using larger directional antennas run at a higher frequency for shorter periods.

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