NuSTAR

Using the NuSTAR space telescope, researchers have performed a deep analysis of the X-ray binary 4U 1700-37, a system where a compact object—likely a neutron star—is pulling material from a massive supergiant star HD 153919. By studying the high-energy light emitted as this material falls toward the object, the team looked for 'cyclotron lines,' which act as a direct probe of a star's magnetic strength. While no rhythmic pulses were found, the study suggests the neutron star possesses a ...