Astrometric and spectral study of two new isolated neutron star candidates

Details Astrometric and spectral study of two new isolated neutron star candidates Astrometric and spectral study of two new isolated neutron star candidates

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005cxo..prop.1955m&link_type=abstract

Chandra Proposal ID #07500300

Physics

Chandra Proposal Id #07500300

Scientific paper

Deep follow-up optical observations of two very soft serendipitous XMM-Newton sources have failed to detect any plausible optical counterpart. Their X-ray spectra are consistent with blackbodies with kT ~ 120 eV and the lack of significant variability makes them good candidate isolated neutron stars (INSs). We propose to carry out short Chandra observations to obtain better X-ray spectra and accurate positions which will allow efficient optical searches and will eventually establish the true nature of the sources. In order to understand the origin of this class of neutron stars and the characteristics of the underlying population, it is very important to extend the current sample of seven ROSAT-discovered INS to sources at much fainter X-ray fluxes.

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