AAS 203rd Meeting, January 2004
Session 110 Interstellar Medium I
Poster, Thursday, January 8, 2004, 9:20am-4:00pm, Grand Hall

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[110.15] Continuum mapping of an interaction Region within Loop I (theNorth Polar Spur in the ISM)

K. Reilly (deceased) (New College of Florida), C. Salter, T. Ghosh (Arecibo Observatory)

We present 430-MHz continuum mapping of a region on the edge of the nearby Loop I (the North Polar Spur) where a semi-circular emission arc is superposed upon the larger feature, showing apparent interaction. This arc could represent the remnant of a second generation supernova resulting from star formation within the compressed cool shell of the Loop I supernova remnant. With a ten-fold smaller beam area than any previous survey of this region, we investigate the nature of the arc, and its relation to Loop I as a promising candidate for the reheating event which has often been invoked to explain the X-ray emission of Loop I.

Arecibo Observatory is operated by NAIC, Cornell University, under a cooprative agreement with the NSF.

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Bulletin of the American Astronomical Society, 35#5
© 2003. The American Astronomical Soceity.