Hambaryan V.; Suleimanov V.; Schwope A.; Neuhäuser R.; Werner K.; Potekhin A.
(2011)
Aims. We constrain the mass-to-radius ratio of isolated neutron stars by performing a spin-phase resolved X-ray spectroscopic analysis. Methods. We combined the data from all observations of RBS 1223 (1RXS J130848.6+212708) ...