TY - JOUR T1 - X-ray mapping of the stellar wind in the binary PSR J2032+4127/MT91 213 Y1 - 2018 A1 - Petropoulou, M. A1 - Vasilopoulos, G. A1 - Christie, I. M. A1 - Giannios, D. A1 - Coe, M. J. KW - Astrophysics - High Energy Astrophysical Phenomena KW - pulsars: individual: PSR J2032+4127 KW - radiation mechanisms: non-thermal KW - stars: massive KW - X-rays: binaries AB - PSR J2032+4127 is a young and rapidly rotating pulsar on a highly eccentric orbit around the high-mass Be star MT91 213. X-ray monitoring of the binary system over an ∼4000 d period with Swift has revealed an increase of the X-ray luminosity which we attribute to the synchrotron emission of the shocked pulsar wind. We use Swift X-ray observations to infer a clumpy stellar wind with r-2 density profile and constrain the Lorentz factor of the pulsar wind to 105 < γw < 106. We investigate the effects of an axisymmetric stellar wind with polar gradient on the X-ray emission. Comparison of the X-ray light curve hundreds of days before and after the periastron can be used to explore the polar structure of the wind. VL - 474 SN - 0035-8711 UR - https://ui.adsabs.harvard.edu/abs/2018MNRAS.474L..22P JO - Monthly Notices of the Royal Astronomical Society ER -