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  • Writer's pictureMartine Schut

FotU Symposium: 2 February 2023

We are happy to announce the next FotU symposium will be held on February 2nd 2023.

Location: van Swinderenhuys, Gronignen

A tentative timetable can be found below:

13:00- Doors open

13:30 - 14:30 Tim Lichtenberg (Kapteyn)

14:30 - 14:45 Break

14:45 - 15:45 Marcello Seri (Bernoulli)

15:45 - 16:00 Break

16:00 - 17:00 Steve Jones (VSI)

17:00 Drinks and poster session

The abstracts are given below:

Tim Lichtenberg (Kapteyn)

Title: Molten Exoplanets as a Window into the Earliest Earth

Abstract: Due to the absence of a reliable rock record from the early

Earth, our understanding of the environment that gave rise to life on

our own planet is clouded. Current and upcoming exoplanet surveys,

however, significantly widen our view of the distribution and

variability of rocky planets and their chemical inventories, giving

opportunity to test scenarios of early planetary evolution and

atmospheric formation. I will describe how rocky exoplanets in a

partially or fully molten state open a novel window into on the

earliest, high-temperature evolutionary regime of rocky worlds.

Increasing reconnaissance of high-temperature super-Earths will enable

us to infer the early climatic and geodynamic evolution of temperate

rocky worlds, providing crucial information on the environmental

context of the origins of life on Earth and are the next key step

toward the characterisation of potentially habitable exoplanets.

Marcello Seri (Bernoulli)

Title: chaotic scattering of light around extremal black holes

Abstract: embracing the spirit of FotU, certain relativistic theories

turn out to be very classical in some of their aspects. In this talk

we will focus on the scattering of light in configurations of static

extremal black holes in the the Einstein-Dilaton-Maxwell theory. We

will observe how this problem can be reduced to the study of

scattering for a classical hamiltonian system, prove the emergence of

chaotic scattering in a certain range of parameters and discuss some

of the many remaining open questions and related problems.

Steve Jones (VSI)

Title: Does antimatter fall up?

Abstract: Most physicists argue that antimatter will fall downwards on

the Earth, i.e. that the gravitational force between matter and

antimatter is attractive. There is strong theoretical reasoning to

support this, as well as indirect experimental evidence. However,

these results are not without their caveats, and as of yet, there is

no direct experimental evidence. Here, I will summarise the arguments

against antigravity, and describe the state-of-the-art antihydrogen

experiments which are aiming to measure the gravitational interaction

between matter and antimatter at the <1% level.

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