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We report the results of a Suzaku observation of the anomalous X-ray pulsar(AXP) 1E 1841-045 at a center of the supernova remnant Kes 73. We confirmedthat the energy-dependent spectral models obtained by the previous separateobservations were also satisfied over a wide energy range from 0.4 to ~70 keV,simultaneously. Here, the models below ~10 keV were a combination of blackbody(BB) and power-law (PL) functions or of two BBs wit h different temperatures at0.6 - 7.0 keV (Morii et al. 2003), and that above ~20 keV was a PL function(Kuiper Hermsen Mendez 2004). The combination BB + PL + PL was found to bestrepresent the phase-averaged spectrum. Phase-resolved spectroscopy indicatedthe existence of two emission regions, one with a thermal and the other with anon-thermal nature. The combination BB + BB + PL was also found to representthe phase-averaged spectrum well. However, we found that this model isphysically unacceptable due to an excessively large area of the emission regionof the blackbody. Nonetheless, we found that the temperatures and radii of thetwo blackbody components showed moderate correlations in the phase-resolvedspectra. The fact that the same correlations have been observed between thephase-averaged spectra of various magnetars (Nakagawa et al. 2009) suggeststhat a self-similar function can approximate the intrinsic energy spectra ofmagnetars below ~10 keV.

Suzaku Observation of the Anomalous X-ray Pulsar 1E 1841-045