A search for the `10 keV feature' in the NuSTAR spectra of accreting X-ray pulsars

A peculiar characteristic exhibited by the accretion powered X-ray pulsars is called the '10 keV feature', which appears as a dip/hump/wiggle in the X-ray spectrum at around 10 keV. Using the NuSTAR archival observations of several bright accretion powered X-ray pulsars, we extensively searched for the 10 keV feature. Surprisingly, we found the occurrence of the 10 keV feature to be rare as opposed to previous reports.