Physical Society Colloquium
Separating wheat from chaff:
photometric
classification in the age of LSST
Dunlap Institute for Astronomy and Astrophysics
University of Toronto
The Legacy Survey of Space and Time (LSST) on the Rubin Observatory will
generate a data deluge: millions of transients and variable sources will need
to be classified from their light curves. Photometric classification has long
been a problem of interest in the astronomical community, but the Photometric
LSST Astronomical Time-series Classification Challenge (PLAsTiCC) brings a
wide range of models together, simulated under LSST-like conditions for the
first time. PLAsTiCC was delivered to the community through a Kaggle challenge,
designed to stimulate interest in time-series photometric classification and
deliver methodologies that will advance the LSST science case. I will give
an overview of the road to PLAsTiCC, the models and the validation of the
data, present the results from PLAsTiCC, and discuss the science impact of
classification on photometric cosmology with Type Ia supernovae. I'll also
discuss the Canadian context for the Rubin Observatory.
Livestream: https://www.youtube.com/watch?v=fXm3spoz-WY
Friday, January 8th 2021, 15:30
Tele-colloquium
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