Comet C/2006 P1 (McNaught): Observations by STEREO and SOHO

Details Comet C/2006 P1 (McNaught): Observations by STEREO and SOHO Comet C/2006 P1 (McNaught): Observations by STEREO and SOHO

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008epsc.conf..832j&link_type=abstract

European Planetary Science Congress 2008, Proceedings of the conference held 21-25 September, 2008 in Münster, Germany. Online a

Physics

Scientific paper

We present January 2007 observations of comet C/2006 P1 (McNaught) by the ESA/NASA SOHO spacecraft's LASCO coronagraph and the twin NASA STEREO spacecraft's SECCHI heliospheric imagers. McNaught's extensive dust tail displayed a mixture of ordered and quasi-random distribution of particles that was well-captured by these instruments. Linear dust tail features termed striae were common; these can be explained by the mass-fragmentation of large dust grains within brief time periods, once the grains are well-separated from the comet's nucleus. We model this process, in an attempt to reproduce McNaught's dust tail features. The attempts to simulate the tail's appearance as seen by SOHO and STEREO are presented, and we summarize the implications of our interpretation of these simulated tail structures for the nature of the comet's dust population.

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