Absorption lines in the spectra of nearby neutron stars

Marten H van Kerkwijk

Univ. of Toronto


Over the last year, photospheric absorption features - likely due to hydrogen in strongly magnetized atmospheres - have been found in X-ray spectra taken with XMM and Chandra for three nearby neutron stars. I will discuss what we have learned from those observations and describe the new puzzles they have posed. I will also present initial results from our large, 300 ks Chandra programme on one of the brightest sources.


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