Abstract
The results of photometric measurements (in UBV filters) of Comet P/Halley during four nights in January 1986 have been presented. Rapid recurring increases of P/Halley's brightness were observed during these four nights. This phenomenon seemed to occur at a time interval of about 23.7 ± 0.3 hr. The maximum variation of brightness during an individual night amounts to δU ~ 0.m70; δB ~ 0.m, 65 and δV ~ 0.m66 in U, B, and V filters, respectively. Rapid irregular short-lived fluctuations of brightness of the order of 0.m1 were also found present during an individual night. The present observations show the active nature of P/Halley.
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Goraya, P.S., Uddin, W. & Srivastava, R.K. Rapid changes of brightness in P/Halley. Earth Moon Planet 38, 53–58 (1987). https://doi.org/10.1007/BF00115937
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DOI: https://doi.org/10.1007/BF00115937