The Central Compact Object in Cassiopeia A: Magnetar or Anti-Magnetar?

Details The Central Compact Object in Cassiopeia A: Magnetar or Anti-Magnetar? The Central Compact Object in Cassiopeia A: Magnetar or Anti-Magnetar?

Oct 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009xmm..prop...14g&link_type=abstract

XMM-Newton Proposal ID #06504501

Computer Science

Supernovae, Supernova Remnants, Diffuse (Galactic) Emission And Isolated Neutron Stars, Cas A Cco

Scientific paper

Discovering the pulsar in the Cas A supernova remnant is the key to confirming the interpretation of the Central Compact Objects (CCOs) as a major class of neutron stars (NS) that are born spinning slowly (P gt 100 ms) and with surprisingly weak magnetic fields (B lt 1.e11 G). Mounting evidence for such a population has overtaken the previous hypothesis for the Cas A CCO as a magnetar in quiescence. XMM can make the definitive search for pulsations from this, the youngest known NS. A pulsar in Cas A will reveal the spin period and dipole B-field of a NS at an age that is only a few percent of the known magnetars and CCOs. It will address the relationship between initial angular momentum and natal magnetic field, and investigate their role in the evolution of young NSs.

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