Although the true origin of the broad absorption lines in X-ray spectra of
thermal isolated neutron stars is not clear yet, our current knowledge about
the "magnificent seven" strongly suggests that they are highly magnetized
(1013−1014 G), slowly rotating cooling neutron stars. Further timing
studies would be very useful to obtain more independent estimates of the
magnetic field strength (as they currently only exist from RX J0720.4-3125).Comment: Proceedings of the 2005 EPIC XMM-Newton Consortium Meeting, Ringberg
Castle, Germany, April 11-13 2005, Edt. U.G. Briel, S. Sembay and A. Read,
MPE Report 288, June 200
