RT06 Test #2 (Strömgren Sphere, thermal evolution allowed)

Test #2 from the Radiative Transfer Comparison Project (Iliev et al. 2006).

This problem investigates the growth of an HII region around a blackbody source of ionizing photons. The main parameters are:

• Stellar ionizing photon production rate of \(\dot{Q} = 5 \times 10^{48} \ \text{s}^{-1}\).
• Stellar spectrum is a \(10^5\) K blackbody.
• Medium composed of hydrogen only, with a density of \(n_{\text{H}} = 10^{-3} \ \text{cm}^{-3}\).
• Gas temperature is able to evolve. It is initially set to \(T=100\) K everywhere on the grid.

The ionization and heating rates are computed treating the source’s spectral energy distribution in full. A lengthy discussion of this can be found in Mirocha et al. (2012).

import ares

sim = ares.simulations.RaySegment(problem_type=2)
sim.run()

anl = ares.analysis.RaySegment(sim.checkpoints)

anl.PlotIonizationFrontEvolution(fig=1)

# Snapshots at 10 and 50 Myr
anl.IonizationProfile(fig=2, t=[10, 50])
anl.TemperatureProfile(fig=3, t=[10, 50])