nteractions of Supernovae with the surrounding
circumstellar medium
Petr Kurfürst
"Market" of potential topics for students' theses
Bachelor, diploma and/or PhD thesis
Hydrodynamics of interaction
• Hydrodynamic simulations of a supernova (SN) interacting with various forms of aspherical circumstellar medium
• Using the own Eulerian hydrodynamic code (Kurfürst+ 2020) or other widely used hd codes (SNEC, Flash, Athena+, etc.)
Shock power as an internal power source
Estimates of light curves from our simulations:
0 100 200 300 400
t(d)
Compared to observed LCs (Bilinski+ 2020, Smith+2015, Nyholm+2017,
Arcavi+ 2017)
• A - SN-disk
o Bl - SN-concave colliding wind (CW) shell
• B2a - SN-distant planar CW shell
• B2b - SN-closer planar CW shell
• B3 - SN-convex CW shell 9 C - SN-bipolar lobes
Spectral line profiles
Different viewing angles correspond to different line-of-sight velocity distributions:
A
SN - disk
B2b
SN - colliding winds planar shell
• Modeling of spectra using radiation transfer or Monte Carlo computational codes (RADMC-3D, Cloudy, etc.)
Models of magnetospheres of rotating hot stars
Petr Kurfürst
potential topics for students' theses
Diploma and/or PhD thesis
Magnetohydrodynamic (MHD) models of corotating magnetospheres of hot stars
• MHD simulations of magnetically confined stellar winds or other forms of circumstellar medium (disks)
tilted dipole+quadrupole, n* = 10, ip = 5/T/12, w = 0.2, t = 3000 ks ■13     10 i iiwA' —i-1-1-1 n 1000 5
- 500
1000
■ 600
200
Ho
H-200
1-600
-1000
Using the own Eulerian MHD code (Kurfürst+, in prep.) or other widely used MHD codes (Flash, Athena+, etc.)
MHD models of corotating magnetospheres of hot stars
• Detailed calculations of physical and geometrical properties of circumstellar environment (Kurfürst+, in prep.):
force equilibria ("fe") of aligned dipole + octupole, t = 3000ks, rj* = 10
Comparison of light curves
• Different phases correspond to different line-of-sight density and/or velocity distributions during the rotational period (Krticka+ 2022):
phase tp phase ^
• Calculation of light curves using radiation transfer or Monte Carlo computational codes (RADMC-3D, Cloudy, etc.)