Cometary outbursts: re-discussion of collision causes - the application to the comet 29P/Schwassmann-Wachmann 1

Details Cometary outbursts: re-discussion of collision causes - the application to the comet 29P/Schwassmann-Wachmann 1 Cometary outbursts: re-discussion of collision causes - the application to the comet 29P/Schwassmann-Wachmann 1

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004mnras.354..142g&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 354, Issue 1, pp. 142-150.

Astronomy and Astrophysics

Astronomy

8

Comets: General, Comets: Individual: Comet 29P/Schwassmann-Wachmann 1, Meteors, Meteoroids

Scientific paper

In this paper, a source of cometary outbursts is examined. As a potential cause of some outbursts, impacts of a comet with meteoroids are considered. The probabilities and consequences of such events have been investigated in relation to the case of the Comet 29P/Schwassmann-Wachmann 1 outbursts. This paper focuses on two problems. The first one concerns the changes in brightness of the comet after the impact of a meteoroid into its nucleus. It is shown that impacts of comets with even metre-sized solid impactors give an immediate considerable jump in their brightness consistent with that observed during real outbursts. The second problem is to estimate how real such events are. It is concluded that the probability of impacts with metre-sized projectiles in relation to the Comet 29P/Schwassmann-Wachmann 1 is very low - practically negligible. The possibility of self-bombardment of this comet by pieces of cometary material ejected earlier from its nucleus was also discussed. It is shown that the probability of such events is also hardly probable. That is why the main conclusion of this paper is that the impact mechanism could not trigger the outburst activity of the considered comet.

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