Physics
Scientific paper
Sep 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop..740l&link_type=abstract
Chandra Proposal ID #03100792
Physics
Chandra Proposal Id #03100792
Scientific paper
Using ACIS-S observations of comet C/LINEAR 1999 S4 with Chandra in Cycle 1, we conclusively demonstrated the presence of x-ray line emission driven by charge exchange between highly ionized solar wind minor ions and gases emitted from the cometary nucleus. A number of important uncertainties remain, however, that can be answered with ACIS-S observations of the brighter, closer comet C/LINEAR WM1 (2000) in December 2001: How many CXE lines are ultimately detectable with Chandra in the 250 - 900 eV energy range? Can we detect spatial hardness variations due to progressive solar wind charging from the cometary neutrals? What is the temporal history of the emission? We request a small amount of ACIS-S time, 35 ksec in Cycle 3, to answer these important questions.
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