May 16, 2014

Davide Lazzati, , Oregon State University

"The interplay between condensation and chemistry in the formation of solid particles in the ejecta of supernova explosions"

Speaker's website »

Dust is a minor component of the interstellar medium but
plays a major role in the evolution of the universe and on our
capability to observe it. Despite recent advances, some fundamental
aspects of the physics of formation of cosmic dust are still poorly
understood. This leads, for example, to theoretical predictions of
dust yields from supernova explosions that are at least two orders of
magnitude larger than observed. In this talk I will use carbonaceous
dust formation in core-collapse supernovae as a case study to discuss
the current status and recent advances on our understanding of the
physical and chemical mechanisms at the base of the gas-solid phase
transition in the astrophysical environment. I will discuss different
approaches to the problem and compare their results to available
observations. I will conclude by introducing a new framework for
studying the outcomes of collisions between dust agglometates to study
their compactification, growth, and fragmentation.

Event Details

May 16, 2014


4421 Sterling Hall

Speaker Host:
Brian Morsony

UW-Madison Astronomy Home