Wednesday 27 October, at 14:00 in Holzblat Hall (7).


BABY SUPERNOVAE - FROM SHOCK BREAKOUT TO RECOMBINATION


Speaker: Udi Nakar


Abstract:

The first light from a supernova emerges once the shock that crosses
the progenitor star breaks out of the stellar surface. This flash of
light, typically in UV or X-ray, is followed by a broken power-law
decay of luminosity and temperature, generated by radiation that
leaks out of the expanding gaseous sphere. The early supernova
emission provides a wealth of unique information on the progenitor
and the explosion. However, its short duration makes it very
difficult to detect. In recent years, detection of supernovae soon
after explosion became more frequent, where most notable is the
detection of an X-ray flash from the shock breakout of a nearby type
Ibc supernova. In this talk, I will review the physics of shock
breakout and the following emission, focusing on what can be learned
from future observations