This Week

Week Commencing 5 March 2018

ASR Management Group

Tuesday 6 March 2018, 1pm, Physics West 229

ASR Group Meeting

Wednesday 7 March 2018, 12 noon, Physics West Library

Physics Colloquium

Wednesday 7 March 2018, 4pm Poynting Small Lecture Theatre
Speaker: Prof Jim Fuller, Caltech
Title: The surprising impact of gravity waves

Gravity waves are low frequency fluid oscillations restored by buoyancy
forces in planetary and stellar interiors.  Despite their ubiquity, the
importance of gravity waves in evolutionary processes and asteroseismology
has only recently been appreciated. For instance, Kepler asteroseismic data
has revealed gravity modes in thousands of red giant stars, providing
unprecedented measurements of core structure and rotation.

I will show how gravity modes (or lack thereof) can also reveal strong
magnetic fields in the cores of red giants, and I will demonstrate that
strong fields appear to be common within “retired” A stars but are absent
in their lower-mass counterparts. In the late phase evolution of massive
stars approaching core-collapse, vigorous convection excites gravity waves
that can redistribute huge amounts of energy within the star. I will present
preliminary models of this process, showing how wave energy redistribution
can drive outbursts and enhanced mass loss in the final years of massive
star evolution, with important consequences for the appearance of
subsequent supernovae.

Astronomy in the City

Wednesday 7 March 2018, 5.30pm, Poynting Large Lecture Theatre
Tickets are available for the final event of the season. Details of the
evening and a link to get your tickets are

We will be having a talk from Amaury Triaud, he will discuss the hunt for
worlds around other stars. Please book early to avoid disappointment.


Previous issues can be found here