Dramactic post-impact X-ray brightening of Comet Tempel 1

Details Dramactic post-impact X-ray brightening of Comet Tempel 1 Dramactic post-impact X-ray brightening of Comet Tempel 1

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005atel..559....1o&link_type=abstract

The Astronomer's Telegram, #559

Astronomy and Astrophysics

Astronomy

1

X-Ray, Comets

Scientific paper

The Swift Gamma-Ray Burst satellite has been monitoring the X-ray emission from Comet Tempel 1 for several weeks using it's X-ray Telescope. The X-ray emission from the Comet was constant within the uncertainties until about 2.9 days after impact. In the following 24 hours the X-ray emission increased by a factor of approximately 7 and has remained bright as of midday (UT) on 2005 July 8. If the cometopause is at a distance of 10000 km from the nucleus, the delay in X-ray brightening implies an average speed for the ejecta of 40 m/s.

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