Possible evidence for free precession of a strongly magnetized neutron star in the magnetar 4U 0142+61

K Makishima1, T Enoto2, J S Hiraga3

  • 1Department of Physics, Graduate School of Science, the University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan and Research Center for the Early Universe, Graduate School of Science, the University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan and MAXI team, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.

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