Colloquium

  • 2021 Oct 28

    ITC Colloquium - Anna Ijjas

    11:00am to 12:20pm

    Location: 

    Zoom
    "Entropy, Black Holes, and the Early Universe"

    Emerging from a big bang in which gravity is strongly coupled and quantum fluctuations of stress-energy and spacetime are both large, the natural expectation is that the total entropy should be nearly maximal and equally distributed among both stress-energy and gravitational degrees of freedom. However, the observed entropy distribution on the last scattering surface is puzzlingly different, as Penrose has emphasized. In this talk, I will introduce the cosmological entropy problem and discuss our recent proposal to evade... Read more about ITC Colloquium - Anna Ijjas
  • 2021 Nov 04

    ITC Colloquium - Aleksandra Ćiprijanović (FNAL)

    11:10am to 12:00pm

    Location: 

    Zoom
    "Bridging the gap between simulations and survey data - domain adaptation for deep learning in astronomy'

    Astronomical surveys are already producing very large datasets, and machine learning will play a crucial role in enabling us to fully utilize all of the available data. Machine lerning models are often initially trained on simulated data and then applyed to observations, which can potentially lead to a substantial decrease in model accuracy on the new target dataset. Simulated and telescope data represent different data domains, and for a machine learning model to work in both...

    Read more about ITC Colloquium - Aleksandra Ćiprijanović (FNAL)
  • 2021 Nov 18

    ITC Colloquium - Conny Aerts (KU Leuven)

    11:00am to 12:00pm

    Location: 

    Zoom

    "Highlights from Gravito-Inertial Asteroseismology"

     

    High-precision photometric light curves assembled by space telescopes have allowed for the probing of stellar interiors via asteroseismology.  Applications

    to sun-like stars and red giants are meanwhile standard practise.  After a short introduction, this talk focuses on the recent and challenging case of

    gravito-inertial modes in rapidly rotating stars born with a convective core.  We discuss how such modes lead to estimates of the internal rotation and...

    Read more about ITC Colloquium - Conny Aerts (KU Leuven)