Deep Impact ejection from Comet 9P/Tempel 1 as a triggered outburst

Details Deep Impact ejection from Comet 9P/Tempel 1 as a triggered outburst Deep Impact ejection from Comet 9P/Tempel 1 as a triggered outburst

2010-11-25

arxiv.org/abs/1011.5541v1

Astronomy and Astrophysics

Astrophysics

Earth and Planetary Astrophysics

4 pages (including 2 figures) Proceedings of the International Astronomical Union, IAU Symposium, IAU vol. 5, Symposium S263,

Scientific paper

10.1017/S1743921310002000

Ejection of material after the Deep Impact collision with Comet Tempel 1 was studied based on analysis of the images made by the Deep Impact cameras during the first 13 minutes after impact. Analysis of the images shows that there was a local maximum of the rate of ejection at time of ejection ~10 s with typical velocities ~100 m/s. At the same time, a considerable excessive ejection in a few directions began, the direction to the brightest pixel changed by ~50 deg, and there was a local increase of brightness of the brightest pixel. The ejection can be considered as a superposition of the normal ejection and the longer triggered outburst.

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