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D.J. Patnaude, R.A. Fesen (Dartmouth College), J.C. Raymond (Harvard-Smithsonian Center for Astrophysics), N.A. Levenson (Johns Hopkins University), J.R. Graham (University of California, Berkeley)
Optical images and spectra along with ROSAT PSPC X-ray images of a small, isolated cloud located along the southwest limb of the Cygnus Loop are presented. The observed optical morphology and relative optical line strengths suggest that the cloud is viewed nearly edge-on and is currently being overrun by the remnant's blast wave. The interaction of the shock front with the cloud has generated several small shock fronts seen within the cloud and along its edges. X-ray emission is detected from the blast wave both north and south of the cloud which is associated with the Balmer-dominated shock filaments. X-ray emission associated with the cloud itself is relatively weak, suggesting that the blast wave has only recently begun to engulf the cloud.