The neutron star in SXP 91.1 shows an unusually steady, high spin-up rate over 20 years, consistent with persistent accretion from a stable circumstellar disc.
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An X-ray and optical study of the outbursting behaviour of the SMC Be X-ray binary SXP 91.1
The neutron star in SXP 91.1 shows an unusually steady, high spin-up rate over 20 years, consistent with persistent accretion from a stable circumstellar disc.