El próximo miércoles 18 de junio, Alex Broughton, investigador del Kavli Institute for Particle Astrophysics and Cosmology (Stanford University), dictará el coloquio “The Universe in Pixels: Precision Astrophysics with the Legacy Survey of Space and Time (LSST)” a las 11:00 horas en la Sala 208 del Instituto de Física, Campus Curauma, PUCV.
Compartimos el resumen de la presentación:
The Legacy Survey of Space and Time (LSST) at the Vera C. Rubin Observatory will be a turning point for astronomy when it begins its decadal survey this year. The survey will cover 18,000 deg2 of the sky every three nights across 6 filters (ugrizy), generating 15TB of data every night using the largest digital camera in the world for astronomy (3,200 Mpx), and it will automatically grant data rights to all scientists and students affiliated with institutions in both the US and Chile. The survey will facilitate new institutional collaborations and groundbreaking research into dark energy and dark matter, galaxy evolution, the Milky Way, the solar system, and the transient optical sky. All LSST science will begin with pixel-level images, which contain artifacts such as traps, coffee stains, tree rings, and brighter-fatter that can mimic real astrophysical observables and need to be exquisitely controlled by state-of-the art image processing algorithms. In this talk, I will dive into the world of instrument signature removal (ISR) and discuss how different artifacts can impact photometry, centroid, and point-spread function (PSF) estimation and how we can use the Forward Global Calibration Method (FGCM) to correct some of these features across the LSST camera’s focal plane to achieve the photometric precision needed for LSST science (O(1) mmag). With these results, we will then look ahead at the scientific potential of the LSST era and the future of astrophysical discovery.
Extendemos la invitación a la comunidad del Instituto de Física y público interesado a participar de este coloquio.
