The Proper Motion of the Central Compact Object in Cassiopeia A

Details The Proper Motion of the Central Compact Object in Cassiopeia A The Proper Motion of the Central Compact Object in Cassiopeia A

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cxo..prop.2838d&link_type=abstract

Chandra proposal ID #11500712

Computer Science

Scientific paper

We propose to measure the proper motion of the central compact object (CCO) in Cassiopeia A over a 10-year baseline. The CCO is an enigma that does not fit cleanly into any compact object category. It is offset from the optical expansion center of the supernova remnant which suggests a proper motion of 350 km/s in a direction perpendicular to the well-known northeast-southwest jet axis. However, the actual proper motion is NOT KNOWN and may not be tied to the offset direction at all. The true direction and magnitude of the CCO's proper motion can be used to provide constraints on its nature and the dynamics of core-collapse supernovae.

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