Bias selection effects due to the finite time resolution of a detector recording space gamma-ray bursts

Computer Science

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Cosmic Rays, Gamma Ray Bursts, Radiation Detectors, Temporal Resolution, Spatial Distribution, Gamma Ray Observatory

Scientific paper

A study is made of the way in which the finite time resolution of detectors can distort the results of testing the space distribution of gamma-ray burst sources. Uniform and isotropic space distribution of the sources, equal standard luminosities, Euclidean geometry, and the absence of recurrence are assumed. Simulated time profiles of gamma ray bursts are 'detected' in much the same way as is done by the BATSE (Burst and Transient Sources Experiment) instrument aboard the Compton Gamma Ray Observatory. The well-known tests for space distribution, (V/Vmax) and logN-logS, are applied. The results are compared to those obtained in the BATSE experiment. It is demonstrated how the effect under study can change the distribution of gamma-ray burst durations.

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