ToO Observations of Isolated Neutron Stars

Details ToO Observations of Isolated Neutron Stars ToO Observations of Isolated Neutron Stars

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006cxo..prop.2165w&link_type=abstract

Chandra Proposal ID #08500247

Physics

Chandra Proposal Id #08500247

Scientific paper

Phase-coherent timing solutions for two Isolated Neutron Stars (INSs) were recently established and the inferred magnetic field strengths are intermediate between ordinary radio pulsars and magnetars. Interestingly, strong timing noise, spectral variability, and pulse morphology changes were observed in RX J0720.4-3125 -- characteristics commonly seen in magnetars. Given the strong timing noise seen in this object, there is a reasonable expectation that it may glitch. Transient flux variability may also be seen if the X-ray emission is powered by magnetic dissipation. Here, we propose a sequence of ToO observations should either source glitch or change brightness by more than 50%. These observations will allow us to establish a new timing solution and/or quantify spectral changes.

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