X-Ray Spectra of Young Pulsars and Their Wind Nebulae: Dependence on Spin-Down Energy Loss Rate

摘要: An observational model is presented for the spectra of young rotation-powered pulsars and their nebulae based on a study nine bright Crab-like pulsar systems observed with Chandra X-ray observatory. A significant correlation discovered between these that associated wind nebulae, both which are to be function spin-down energy loss rate, . The 2-10 keV objects well characterized by an absorbed power-law photon indices, Γ, in range 0.6 < ΓPSR 2.1 1.3 ΓPWN 2.3, respectively. linear regression fit relating two sets indexes yields = 0.91 ± 0.18 + (0.66 0.11)ΓPSR, coefficient r 0.97. found steepen as Γ Γmax α-1/2, providing limit spectral slopes pulsars. These results reveal basic properties systems, allow new constraints models emission, provide means predicting energetics lacking detected pulsations.