A SEARCH FOR THE MILLISECOND PULSAR IN CYGNUS-X-3

Atmospheric Cerenkov data, recorded at Gulmarg, India, during the 2-ye ar period 1988-1989 in the direction of Cygnus X-3, have been searched for the presence of a periodic pulsar modulation, employing both the Rayleigh power and the epoch-folding (chi(2)) techniques. No evidence is found for pulsations at either similar to 12.59 ms or similar to 9. 22 ms, the two period values around which the detection of pulsed sign als has been reported by three atmospheric Cerenkov groups, but not by at least two other groups, including one using a higher-sensitivity C erenkov imaging telescope.