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   71008
   There is a group of anomalous X-ray pulsars (AXPs) with pulse periods
   close to 6s, neither rotation-powered neutron stars nor accreting X-ray
   binaries. Recently, a hypothesis that AXPs would be neutron stars with
   super-strong magnetic fields 0f B=10E15G, so called "magnetars", is
   proposed. If AXPs are magnetars, the properties of AXPs of pulse-period
   of 6s, steady spin-down rate and moderate X-ray luminosity of 10E35
   erg/s, can be successfully explained. The idea is very interesting in
   the point that the system is driven by the magnetic energy of the
   neutron star. To confirm this idea, we plan to make follow-up
   observation of a new discovered AXPs, 1RXSJ170849.0-400910 and
   investigate the spin-down rate.
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