Date:
Mon, 26/06/201712:00-13:30
Location:
Levin building, Lecture Hall No. 8
Lecturer: Mr. Almog Yalin
Affiliation: Racah Institute of Physics
The Hebrew University of Jerusalem
Abstract:
Explosions occur when a large amount of energy is deposited in a short period of time into a small hot spot. From that hot spot emerges a shock wave that moves out into the surrounding medium. The evolution of this shock wave is governed by the non - linear flow equations, and therefore, in general, cannot be solved analytically. However, the evolution of a strong explosion has a symmetry called self similarity, which greatly simplifies the equations to such extent that an analytic solution can be obtained.
These solutions have been widely used in the astrophysical community to analyse explosions of stars (supernovae), and their effect on the interstellar medium. These analyses yielded predictions for light - curves, spectra and lifetimes of supernovae. In this talk I will review the theory of supernova explosions, and demonstrate how I use a similar approach in my research to study other astrophysical phenomena involving strong shocks.
Affiliation: Racah Institute of Physics
The Hebrew University of Jerusalem
Abstract:
Explosions occur when a large amount of energy is deposited in a short period of time into a small hot spot. From that hot spot emerges a shock wave that moves out into the surrounding medium. The evolution of this shock wave is governed by the non - linear flow equations, and therefore, in general, cannot be solved analytically. However, the evolution of a strong explosion has a symmetry called self similarity, which greatly simplifies the equations to such extent that an analytic solution can be obtained.
These solutions have been widely used in the astrophysical community to analyse explosions of stars (supernovae), and their effect on the interstellar medium. These analyses yielded predictions for light - curves, spectra and lifetimes of supernovae. In this talk I will review the theory of supernova explosions, and demonstrate how I use a similar approach in my research to study other astrophysical phenomena involving strong shocks.