Time Synchronization System in a Two-Station Search for Primordial Black-Holes

Abstract

A time synchronization system has been developed for the Gulmarg-Srinagar coincidence experiment for detection of primordial black-hole explosions. It utilizes field-markers derived from the synchronization pulse train of Srinagar Television to match the station clocks and give a relative time accuracy of ⪕2 μs. The epoch ambiguity with respect to the absolute time is determined to an accuracy of ⪕1 ms with the help of high frequency time signals from ATA and RWM. The system can presently be employed for the synchronization of remotely-located clocks through the radio time-signals. In future, it can be used for this purpose in the TV synchronization mode also when the national television hook-up becomes possible. The resulting synchronization accuracy of -1 μs should be sufficient for future very-long baseline coincidence experiments in γ-ray and radio astronomies and will dispense with the portable clock method of synchronization which in general, is not readily accessible.