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V.E. Zavlin (MPE), D. Sanwal, G.G. Pavlov (PSU), W. Becker (MPE)
We present results of the spectral analysis of X-ray data on the 5.75~ms pulsar J0437-4715 obtained in a 25~ks observation with Chandra on May, 29-30 (2000). We supplemented the new data with those from ROSAT and EUVE. We find that all data are consistent only if one assumes a model containing two components, a thermal and a nonthermal. This model suggests that a fraction of the pulsar's X-rays originate from the pulsar's co-rotating magnetosphere, whereas the rest part of the radiation is emitted from hot polar caps on the neutron star surface.
This work is partially supported by a grant from SAO.