SIMBAD references

This paper used Nuclear Spectroscopic Telescope Array observations to examine the temporal and spectral features of the Be/X-ray binary pulsar MAXI J1409-619. The timing analysis of the light curve finds the pulsation of the source at $(501.23\,\,\pm \,\,0.01)$ s. The pulse profile of the source in various energy bands was analysed and showed weak dependence on energy exhibiting asymmetric character and generally suggests a source accretion in the subcritical regime. The variation of pulse fraction with photon energy in general shows an increasing trend. Assuming a distance of 14.5 kpc, we calculated the 3-30 keV source luminosity to be $\sim 6.13\,\,\times \,\,10^{34}\,\,$ erg s$^{-1}$. The long-term spin evolution of the source was carried out, where the source underwent torque reversal.