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Journal Articles Monthly Notices of the Royal Astronomical Society: Letters Year : 2022

Pulsar wind nebulae of runaway massive stars

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D. M. -A. Meyer
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Abstract

A significant fraction of massive stars move at speed through the interstellar medium of galaxies. After their death as core-collapse supernovae, a possible final evolutionary state is that of a fast-rotating magnetized neutron star, shaping its circumstellar medium into a pulsar wind nebula. Understanding the properties of pulsar wind nebulae requires knowledge of the evolutionary history of their massive progenitors. Using two-dimensional magnetohydrodynamical simulations, we demonstrate that, in the context of a runaway high-mass red-supergiant supernova progenitor, the morphology of its subsequent pulsar wind nebula is strongly affected by the wind of the defunct progenitor star pre-shaping the stellar surroundings throughout its entire past life. In particular, pulsar wind nebulae of obscured runaway massive stars harbour asymmetries as a function of the morphology of the progenitor's wind-blown cavity, inducing projected asymmetric up-down synchrotron emission.

Dates and versions

insu-03713225 , version 1 (04-07-2022)

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D. M. -A. Meyer, Z. Meliani. Pulsar wind nebulae of runaway massive stars. Monthly Notices of the Royal Astronomical Society: Letters, 2022, 515, pp.L29-L33. ⟨10.1093/mnrasl/slac062⟩. ⟨insu-03713225⟩
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