Almog Yalinewich - Caltech Tea Talk 14.9.20
Intro to the "Bee Movie" (2007)
physics
star
explode
The energy released is
star
explodes
stars
Couch 2017
Couch 2017
Turbulence doesn't add more energy to the system, so how does it help the star explode?
Borrielloa et al 2014
Borrielloa et al 2014
Suzuki & Shigeyama 2014
Rankine Hugoniot conditions for a strong shock
Thin shell approximation
Explosion + point gravity
Breaks self similarity
Except for special set of parameters
Free fall trajectory
Graded density trajectory
Virial parameter
Mezzacappa et al. 2001
Janka et al. 2012
Rankine Hugoniot for a strong shock
But the upstream material is also affected by gravity
Useful parameter: current to original radius ratio
More diffusion is like higher gamma
Couch et al 2020
Model like the Shakura Sunyaev alpha model
Classical diffusion breaks self similarity
workaround:
Optical depth
Ideal shock
Turbulent shock
An analytic self similar model for a core collapse supernovae
Critical energy, depending on shock structure
Turbulent shock more resilient against gravity
Model can be improved within self similar framework
Questions?