Possible transient emission from Cygnus X-3 at TeV energies during October 1985 radio flare

The Gulmarg gamma-ray telescope (threshold energy similar to 6 TeV) was tracking Cygnus X-3 on four days in Oct. 1985, around the time the source produced one of its most outstanding radio flares. Examined here is the behavior of the event rates recorded during this period with a time-resolution of 216 sec. Two episodes of higher event rates, each several minutes in duration and having a Poissonian significance of similar to 4 sigma , were recorded on Oct. 10 and 12, suggesting possible activity at TeV energies during the radio flare period of Cygnus X-3.