Scope of high-frequency time keeping in searches for short-period gamma-ray sources

Details Scope of high-frequency time keeping in searches for short-period gamma-ray sources Scope of high-frequency time keeping in searches for short-period gamma-ray sources

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990japa...11..141s&link_type=abstract

Journal of Astrophysics and Astronomy (ISSN 0250-6335), vol. 11, June 1990, p. 141-150.

Astronomy and Astrophysics

Astronomy

8

Gamma Ray Astronomy, High Frequencies, Cerenkov Radiation, Frequency Distribution, Pulsars, Synchronism

Scientific paper

This paper presents a novel technique to derive the absolute time of occurrence of an event with an accuracy of less than 200 microsec by adapting the HF time synchronization technique to correct for the aging rate and the frequency drift of a temperature-controlled quartz frequency standard. The propagation delay suffered by the HF time signals has been estimated by monitoring the clock error with respect to time signals from five broadcast stations located at distances in the range 500-3700 km from Gulmarg. Using simulated data, the viability of this technique in permitting periodicity searches on timescales of at least 5 milliseconds in cosmic gamma-ray data is shown.

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