Fakultät für Physik und Astronomie
STEPHEN PHILLIPS hostreviews.co.uk / UNSPLASH

Shining light through hydrodynamics simulations

Maya Petkova , ARI

The presence of young stars can have a profound effect on the ongoing process of star formation in a molecular cloud. In particular, the light emitted by them can heat up or even ionise regions of the cloud and alter their dynamics and the future production of stars. Therefore, the numerical study of star formation could not be complete without accounting for the effects of radiative feedback. One of the accurate ways of modelling the propagation of light through a cloud is by using Monte Carlo radiative transfer (MCRT). I will present a new numerical scheme coupling MCRT and particle-based hydrodynamics to model ionising stellar feedback, and the expansion of the resulting H II region. The scheme has been thoroughly tested and further applied to a simulation of a star-forming cloud in the Central Molecular Zone (CMZ) of the Milky Way. Additionally, I will present synthetic emission maps of the simulated CMZ cloud prior to the predicted ionisation event, and compare them to observations.

ARI Institute Colloquium
6 Feb 2020, 11:15
Astronomisches Rechen-Institut, Mönchhofstraße 12-14, Seminarraum 1

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