Spectroscopic Imaging of Charge Exchange X-Ray Emission from Comet C/2002 C1

Details Spectroscopic Imaging of Charge Exchange X-Ray Emission from Comet C/2002 C1 Spectroscopic Imaging of Charge Exchange X-Ray Emission from Comet C/2002 C1

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop.1050d&link_type=abstract

Chandra Proposal ID #03108076

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Chandra Proposal Id #03108076

Scientific paper

Comet C/2002 C1, discovered on February 1, 2002, is predicted to be as bright as 4 - 5 mag when it will become observable with Chandra from April 10, 2002. We propose to utilize this opportunity for direct spectroscopic imaging with ACIS-S. This has never been done for such a bright comet. Thanks to a favorable observing geometry, we can apply a novel observing technique: as the comet will slowly move along the comet-Sun line, an automatic scan of the x-ray emission properties will be provided along this direction, where the charge exchange model predicts a characteristic spectral evolution, which could, however, not be tested so far. While previous Chandra images and spectra of comets suffer from low photon statistics, we expect to get about 40 times more photons than from C/LINEAR S4. This will allow us to utilize the full spectral and spatial resolution of Chandra. A detailed Scientific Justification is provided in the attached Postscript file.

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