Rapid changes of brightness in P/Halley

Details Rapid changes of brightness in P/Halley Rapid changes of brightness in P/Halley

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987em%26p...38...53g&link_type=abstract

Earth, Moon, and Planets (ISSN 0167-9295), vol. 38, May 1987, p. 53-58.

Astronomy and Astrophysics

Astronomy

6

Astronomical Photometry, Brightness, Halley'S Comet, Light Curve, Comet Nuclei, Rotating Bodies, Ubv Spectra

Scientific paper

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 ≡ 0m.70; ΔB ≡ 0m.65, and ΔV ≡ 0m.66 in U, B, and V filters, respectively. Rapid irregular short-lived fluctuations of brightness of the order of 0m.1 were also found present during an individual night. The present observations show the active nature of P/Halley.

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