Session 55 - Supernova Remnants.
Oral session, Tuesday, January 14
Harbour A,

## [55.04] X-ray observations of two unusual' Supernova Remnants: CTB80 containing the 40 millisecond pulsar PSR1951+32, and W50 containing the peculiar source SS433.

CTB 80 amp; W50 are two unusual' supernova remnants (SNRs) since unlike the other composite remnants, their radio morphology presents pronounced asymmetric structures. The unusual' properties of these SNRs are to a large extent associated with the emission from the compact objects associated with them, and their X-ray emission is the key to a better understanding of their properties.