Chandra Observations During The Deep Impact Campaign

Details Chandra Observations During The Deep Impact Campaign Chandra Observations During The Deep Impact Campaign

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006dps....38.2801b&link_type=abstract

American Astronomical Society, DPS meeting #38, #28.01; Bulletin of the American Astronomical Society, Vol. 38, p.533

Astronomy and Astrophysics

Astronomy

Scientific paper

On July 4, 2005 NASA's Deep Impact sent a 375 kg impactor into the nucleus of comet 9P/Tempel 1. We report here on the results of the Chandra observations of the Deep Impact encounter. Comets emit X-rays when highly charged ions from the solar wind charge exchange with its neutral coma. Because of the comet's low outgassing rate it was collisionally thin to charge exchange. Freshly released gas should therefore directly increase the emission measure, allowing Chandra to detect gas created by the impact. The nearly 30 day time span of our observations sampled several severe changes in the solar wind and outbursts in the comet's activity, which can be clearly identified in the observed X-ray emission morphology, spectra and long term light curve.

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