XMM-Newton and NuSTAR Observations of the Compact Millisecond Pulsar Binary PSR J1653–0158

Abstract We have presented the first joint XMM-Newton and NuSTAR analysis of millisecond pulsar (MSP) binary PSR J1653?0158. The 75 minute orbital period inferred from optical gamma-ray observations together with 1.97 ms pulsation in gamma-rays indicate that this system is most compact Black Widow MSP known to date. was not detected data, probably due insufficient photon counts obtained observations. Fitting X-ray spectrum J1653?0158 a power law gives index ? = 1.71 ± 0.09. luminosity source (0.2–40) keV band deduced be 1.18 × 10 31 erg s ?1 , for an adopted distance 0.84 kpc. shown broadband can explained by synchrotron radiation electrons accelerated intrabinary shock, Fermi data are curvature radiations positrons magnetosphere. Our kinematic Tidarren systems J1653–0158 J1311–3430 indicates two likely originated Galactic disk.