Study of a New Class of Isolated Neutron Star -- 1RXS J141256.0+792204

Details Study of a New Class of Isolated Neutron Star -- 1RXS J141256.0+792204 Study of a New Class of Isolated Neutron Star -- 1RXS J141256.0+792204

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007cxo..prop.2408f&link_type=abstract

Chandra Proposal ID #09500854

Computer Science

Chandra Proposal Id #09500854

Scientific paper

We have discovered a new candidate isolated neutron star (INS), the first F_X/F_opt>5000 object to be discovered in seven years, and quite probably the first NS of any sort to be identified in the Galactic halo. Treating the source as analogous to the 7 known INSs implies that, at a height of 4.8 kpc above the Galactic plane, it must have either a very high spatial velocity (> 4800 km/s) or a cooling time much longer than NS cooling theories predict (> 24 Myr). Alternative interpretations of the source as a magnetar or `compact central object' suffer from their own difficulties. We therefore propose to make the first detailed X-ray characterization of this INS, with Chandra observations providing a high S/N CCD-spectrum, investigating long-term variability, and searching for pulsations.

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