Changes between Version 9 and Version 10 of u/erica/CoreCollapseBlog
- Timestamp:
- 03/15/18 18:34:07 (7 years ago)
Legend:
- Unmodified
- Added
- Removed
- Modified
-
u/erica/CoreCollapseBlog
v9 v10 1 == = 3/15/18 ===1 == 3/15/18 == 2 2 3 3 Have a working 2D solution on the grid — As shown in Figure 1, Astrobear attempts to interpolate between the progenitor density profile (red diamonds, Fig. 1) to arbitrary positions on the mesh (i.e. cell centers, blue curve). It then feeds these density values into the HSE numerical integrator and populates the zones with a pressure profile in HSE, working its way from the ambient boundary in (Fig. 2). The values of the ambient medium are just the constant progenitor profiles beyond a radius containing 3 solar masses ($r=7.26 e+9 ~cm$). … … 27 27 28 28 29 '''3/5/18''' 29 == 3/5/18 == 30 30 31 31 The HSE module takes as input: … … 36 36 37 37 38 == = 2/26/18 ===38 == 2/26/18 == 39 39 40 40 The Lane Emden equation non-dimensionalizes the HSE equation in an attempt to find analytic solutions. However, analytic solutions only exist for certain values of the polytropic index. Thus, if we are looking for numerical solutions, we can instead just start with the equation of HSE in spherical coordinates and discretize it: … … 51 51 52 52 53 == = 2/7/18 ===53 == 2/7/18 == 54 54 55 55 Fryer sent progenitor data. The density, pressure, temperature, and velocity profiles of this progenitor look like: … … 80 80 81 81 82 == = 2/5/18 ===82 == 2/5/18 == 83 83 84 84 We would like to model the progenitor of a core collapse supernova in astrobear. The project will be a parameter study to explore the role of magnetic fields and turbulent perturbations on the collapsing core.