Surprisingly high-pressure shocks in the supernova remnant IC 443

Details Surprisingly high-pressure shocks in the supernova remnant IC 443 Surprisingly high-pressure shocks in the supernova remnant IC 443

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.253..662m&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 253, Dec. 15, 1991, p. 662-668.

Astronomy and Astrophysics

Astronomy

17

Gas Pressure, H Lines, Molecular Clouds, Shock Waves, Supernova Remnants, Emission Spectra, High Pressure, Interstellar Extinction, Stellar Spectrophotometry

Scientific paper

The intensities of several lines of molecular hydrogen have been measured from two regions of the supernova-remnant/molecular-cloud shock in IC 443. The lines measured have upper-state energies ranging from 7000 K to 23,000 K. Their relative intensities differ in the two regions, but are consistent with those predicted from the post-shock regions of simple jump-type shocks of different pressure. The pressures so derived are far higher than the pressure in the supernova remnant itself, and a possible reason for this discrepancy is discussed.

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