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- W4295159177 abstract "Using a code that employs a self-consistent method for computing the effects of photoionization on circumstellar gas dynamics, we model the formation of wind-driven nebulae around massive Wolf-Rayet (W-R) stars. Our algorithm incorporates a simplified model of the photo-ionization source, computes the fractional ionization of hydrogen due to the photoionizing flux and recombination, and determines self-consistently the energy balance due to ionization, photo-heating and radiative cooling. We take into account changes in stellar properties and mass-loss over the star's evolution. Our multi-dimensional simulations clearly reveal the presence of strong ionization front instabilities. Using various X-ray emission models, and abundances consistent with those derived for W-R nebulae, we compute the X-ray flux and spectra from our wind bubble models. We show the evolution of the X-ray spectral features with time over the evolution of the star, taking the absorption of the X-rays by the ionized bubble into account. Our simulated X-ray spectra compare reasonably well with observed spectra of Wolf-Rayet bubbles. They suggest that X-ray nebulae around massive stars may not be easily detectable, consistent with observations." @default.
- W4295159177 created "2022-09-11" @default.
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- W4295159177 date "2015-08-19" @default.
- W4295159177 modified "2023-09-27" @default.
- W4295159177 title "X-ray Emission from Ionized Wind-Bubbles around Wolf-Rayet Stars" @default.
- W4295159177 doi "https://doi.org/10.48550/arxiv.1508.04790" @default.
- W4295159177 hasPublicationYear "2015" @default.
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