@article {21732,
	title = {X-ray mapping of the stellar wind in the binary PSR J2032+4127/MT91 213},
	volume = {474},
	year = {2018},
	month = {2018/02/1},
	pages = {L22 - L26},
	abstract = {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<SUP>-2</SUP> density profile and constrain the Lorentz factor of the pulsar wind to 10<SUP>5</SUP> \&lt; γ<SUB>w</SUB> \&lt; 10<SUP>6</SUP>. 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.},
	keywords = {Astrophysics - High Energy Astrophysical Phenomena, pulsars: individual: PSR J2032+4127, radiation mechanisms: non-thermal, stars: massive, X-rays: binaries},
	isbn = {0035-8711},
	url = {https://ui.adsabs.harvard.edu/abs/2018MNRAS.474L..22P},
	author = {Petropoulou, M. and Vasilopoulos, G. and Christie, I. M. and Giannios, D. and Coe, M. J.}
}
