Gamma ray burst astrometry 2: Numerical tests

Details Gamma ray burst astrometry 2: Numerical tests Gamma ray burst astrometry 2: Numerical tests

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992nascp3137..301t&link_type=abstract

In NASA. Goddard Space Flight Center, The Compton Observatory Science Workshop p 301-308 (SEE N92-21874 12-90)

Astronomy and Astrophysics

Astronomy

Astrometry, Error Analysis, Gamma Ray Astronomy, Gamma Ray Bursts, Radiation Sources, Artificial Satellites, Identifying, Monte Carlo Method, Position (Location), Standard Deviation, Wave Fronts

Scientific paper

Since the announcement of the discovery of sources of gamma ray radiation in 1973, many more reports of such bursts have been published. Numerous artificial satellites have been equipped with gamma ray detectors including GRO. Unfortunately, almost no progress has been made in identifying the sources of this high energy radiation. Only one visible counterpart is known. It is suspected that this is a consequence of the methods currently used to define gamma ray burst source 'error boxes'. An alternative procedure was proposed in 1988 by Taff. Herein, Monte Carlo simulations are reported of the efficacy of this technique using realistic burst timing uncertainties and satellite location errors as well as a variety of satellite constellations. Since these are controlled numerical experiments, the dependence is examined of the statistics of the errors in the deduced burst wavefront normal as a function of the timing inconsistencies, detector location standard deviations, and especially the number and distribution of the detectors. The results clearly show that an arc minute prediction of a unique burst location is routinely obtainable once there are at least two interplanetary detectors.

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