Mapping High-Velocity Shocks Along the Jets of NGC 4258

Details Mapping High-Velocity Shocks Along the Jets of NGC 4258 Mapping High-Velocity Shocks Along the Jets of NGC 4258

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cxo..prop...22c&link_type=abstract

Chandra Proposal ID #01700250

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Chandra Proposal Id #01700250

Scientific paper

A deep HRC-S+LETG image will be made of the twisted, X-ray emitting jets of NGC 4258. The X-ray jets are 3.5-arcmin long, several arcsecs wide, and are prominent in radio continuum, optical emission line, and soft X-ray images. They are known to have thermal X-ray spectra, kinematical discontinuities, and gaseous excitation consistent with high-velocity (500-700 km/s) entraining shocks. Our AXAF grating exposure will have sufficient counts and spectral resolution to establish shock velocities and gas abundances at a dozen points in the jet flow. These data will be used to constrain the time evolution of the outflow, and hence the dynamical evolution of the AGN. There will be general insights on jet entrainment and shock physics in other astrophysical contexts.

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