Monitoring the spectral evolution of RXJ0720-3125 and determining its nature

Details Monitoring the spectral evolution of RXJ0720-3125 and determining its nature Monitoring the spectral evolution of RXJ0720-3125 and determining its nature

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008cxo..prop.2719k&link_type=abstract

Chandra proposal ID #10500047

Computer Science

Scientific paper

RX J0720.4-3125 belongs to a group of radio-quiet isolated neutron stars, whose spectra are characterized by a blackbody spectrum plus one or more broad absorption features. It is unique in that its blackbody temperature, and the depth of the absorption feature is variable. The cause for this spectral evolution is unclear, but one proposed model is free precession of a neutron star with two hot spots. Observing in this Chandra cycle will complete the coverage of a putative precession cycle with a period of~7-8 yr. This puts the precession hypothesis to the ultimate test.

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