Outburst activity in comets. I. Continuous monitoring of comet 29P/Schwassmann-Wachmann 1

Details Outburst activity in comets. I. Continuous monitoring of comet 29P/Schwassmann-Wachmann 1 Outburst activity in comets. I. Continuous monitoring of comet 29P/Schwassmann-Wachmann 1

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008a%26a...485..599t&link_type=abstract

Astronomy and Astrophysics, Volume 485, Issue 2, 2008, pp.599-606

Astronomy and Astrophysics

Astrophysics

8

Comets: Individual: 29P/Schwassmann-Wachmann 1, Kuiper Belt, Meteors, Meteoroids

Scientific paper

Aims: We carried out a continuous monitoring of comet 29P/Schwassmann-Wachmann 1 by using medium aperture telescopes with the aim of studying the activity and outburst mechanisms of this comet on the basis of photometric variations. Methods: We used a standardized method to obtain the coma photometry in the R filter of the Johnson-Kron-Cousins system. Some abrupt changes observed in the brightness of SW1 suggest important variations in surface activity with time. Results: During our 2002-2007 observational campaign we detected 28 outbursts (of 1 mag or larger) in 29P/Schwassmann-Wachmann 1. A typical outburst is characterized by a rapid increase towards maximum (in a few hours) and a slower decrease toward the quiescent level (in 3-4 days). Given the effective observing time, the average outburst rate is 7.3 events per year. Despite well-sampled data, no signs of a clear periodicity in the outburst occurrence has been found, thus confirming the unpredictability of the activity of this comet.

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