Localization of gamma-ray bursts with wide field multiple pinhole camera system in near earth orbit

Details Localization of gamma-ray bursts with wide field multiple pinhole camera system in near earth orbit Localization of gamma-ray bursts with wide field multiple pinhole camera system in near earth orbit

Jun 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976ap%26ss..42...89g&link_type=abstract

(COSPAR, Symposium on Fast Transients in X- and Gamma-Rays, Varna, Bulgaria, May 29-31, 1975.) Astrophysics and Space Science, v

Astronomy and Astrophysics

Astronomy

1

Astronomical Photography, Gamma Rays, Satellite-Borne Photography, Spaceborne Astronomy, X Ray Sources, Background Radiation, Collimators, Cosmic X Rays, Cross Correlation, Data Reduction, Position (Location), Precession

Scientific paper

A multiple pinhole camera system has been designed for a small satellite of the SAS type for the detection and localization of gamma-ray bursts. The instrument consists of a three unit array of detectors each of which includes a semicylindrical collimator surrounding a two-dimensional position-sensitive detector. The collimator contains slits 1 mm wide cut parallel to the axis of the cylinder and randomly arranged in azimuth around the cylinder. X-rays may enter the counter through several surfaces. The point at which photoelectric interaction takes place is determined in a plane perpendicular to the cylinder axis. Each unit of the system determines the position of a burst to a great circle and an intersection of great circles provides the precise positions. The field of view of the instrument is essentially the entire region of sky not occulted by the earth. Sensitivity is better than one millionth erg/sq cm for bursts whose intense phases occur in less than a total of three seconds. For stronger bursts the location precision is better than a minute of arc.

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