A new Conservation law for Surface Explosions

Seminar
AstroPhysics Seminar
QUEST Center event
No
Speaker
Almog Yalinewich, Canadian Institute for Theoretical Astrophysics, Toronto
Date
26/11/2020 - 20:30 - 19:00Add to Calendar 2020-11-26 19:00:00 2020-11-26 20:30:00 A new Conservation law for Surface Explosions Many astrophysical phenomena involve an abrupt release of a large amount of energy close to the surface of a large body. Examples include impacts on a terrestrial planet and outbursts from a neutron star while inside the common envelope of a giant star. In this talk I will present a new universal analytic solution that can describe the shock wave in all these scenarios. I will show that this shock wave satisfies a new kind of conservation law that lies somewhere in between energy and momentum conservation. This conservation law opens the door to a myriad of insights about a wide range of physical problems: the size and shapes of craters, atmospheric mass loss from giant impacts and oblique shock breakout from supernovae. The seminar will be hosted on Zoom: https://zoom.us/j/9290951953 The talk's start time is 17:00 Jerusalem time, but we'll start gathering 30 minutes earlier for virtual mingling and informal chat Zoom Department of Physics physics.dept@mail.biu.ac.il Asia/Jerusalem public
Place
Zoom
Abstract

Many astrophysical phenomena involve an abrupt release of a large amount of energy close to the surface of a large body. Examples include impacts on a terrestrial planet and outbursts from a neutron star while inside the common envelope of a giant star. In this talk I will present a new universal analytic solution that can describe the shock wave in all these scenarios. I will show that this shock wave satisfies a new kind of conservation law that lies somewhere in between energy and momentum conservation. This conservation law opens the door to a myriad of insights about a wide range of physical problems: the size and shapes of craters, atmospheric mass loss from giant impacts and oblique shock breakout from supernovae.

The seminar will be hosted on Zoom: https://zoom.us/j/9290951953

The talk's start time is 17:00 Jerusalem time, but we'll start gathering 30 minutes earlier for virtual mingling and informal chat

Last Updated Date : 19/10/2020