Pizza lunch talks
The API pizza lunch talks are informal, weekly meetings where people give a half hour overview of their work (or perhaps a totally different topic), in an informal atmosphere. Pizza meeting is not a colloquium, but is intended to inform and stimulate discussion about the topic.
More information (including tips for speakers, contact points and the latest API articles & circulars).
Past lunch talks
General relativistic MHD simulations of tilted accretion disks and jets
Matthew Liska — UvA -- API
In the past decade numerical general relativistic MHD simulations have shown that tilted accretion disks can precess at a constant rate around spinning black holes. This is an interesting result since it may be able to explain low frequency quasi periodic oscillations, which in turn contain a wealth of information about the black hole and the inner accretion flow.
Thursday 23 February 2017, 12:00. Location: C4.174
Mass-Radius Diversity of Super-Earth Planets: the Role of the Rocky Core
Although we don't have such planets in our own solar system, super-Earths are the most abundant class of planets known to date in our galaxy. Those planets exhibit a great diversity in their mass-radius relation. Most studies attempt to relate this diversity to composition, but the thermal evolutio can play a key role in this diversity.
Thursday 16 February 2017, 12:00. Location: C4.174
Interactive exploration of Newtonian n-body simulations, numerical methods and chaos
Newtonian gravity between two bodies is mathematically fairly straightforward and can be solved analytically. But starting from three bodies there is no known general solution, requiring computational modelling to study behaviour of a system over time.
Thursday 2 February 2017, 12:00. Location: C4.174
The footprint of cometary dust in the lab
Comets are thought to be the most pristine bodies in the solar system that have survived to this day. In-situ measurements of cometary dust therefore provide a unique window on dust growth mechanisms during the onset of planet formation in the early solar nebula.
Thursday 26 January 2017, 12:00. Location: C4.174
Air shower photographer’s choice: Silicon photomultipliers
Maurice Stephan — API -- UvA
The detection of extensive air showers with optical telescopes is a well-established technique to study gamma rays and cosmic rays in the very-high and ultra-high energies ranges. Recent instruments use photomultiplier tubes as the photosensitive component.
Thursday 19 January 2017, 12:00. Location: C4.174
FRB121102: A Long Time Ago in a Galaxy Far-Far Away
Jason Hessels — API -- UvA
Fast Radio Bursts (FRBs) are millisecond-duration flashes of radio light, whose large dispersive delay with frequency suggests that they come from deep in extragalactic space. Their origin presents an exciting astrophysical puzzle.
Thursday 12 January 2017, 12:00. Location: C4.174
Folkert Huizinga — API -- UvA
If your password is 8 characters or less, you should change it NOW! If you're using the same password on several websites, you should change your passwords NOW! Digital security is the protection of your digital identity – the network or Internet equivalent of your physical identity.
Thursday 15 December 2016, 12:00. Location: C4.174
Periodic signals from very (ultra) luminous X-ray sources
Paolo Esposito — API -- UvA
In the last few years, we have undertaken systematic searches for periodic signals from X-ray sources in the Swift, Chandra, and XMM-Newton archives. So far, the effort has yielded about one hundred new X-ray pulsators.
Thursday 8 December 2016, 12:00. Location: C4.174
The impact of mass loss on the final structure and fate of massive stars
Mathieu Renzo — API -- UvA
The end point of massive star evolution is either a neutron star formed in a supernova explosion, or a black hole, which can form with, or possibly without, an associated electromagnetic transient. The core structure at the end of the evolution determines the fate of the star.
Thursday 1 December 2016, 12:00. Location: C4.174
Neutron Star Mass-Radius Constraints using Evolutionary Optimization
Abigail Stevens — API -- UvA
The equation of state of cold supra-nuclear-density matter, such as in neutron stars, is an open question in astrophysics. A promising method for constraining the neutron star equation of state is modelling pulse profiles of thermonuclear X-ray burst oscillations from hotspots on accreting neutron stars.
Thursday 24 November 2016, 12:00. Location: C4.174