Daniel Michalik works as a research project assistant at Lund Observatory in Sweden. His research work focuses on Gaia's core astrometric solution in marginal cases, which occur when sources are observed insufficiently much for a good-quality independent astrometric solution. As part of his PhD thesis "Tycho-Gaia and beyond: Combining data for precision astrometry", he and his advisors invented the Tycho-Gaia Astrometric Solution (TGAS; image of the week; detailed description; quasar extension). For his thesis, he also researched general mathematical strategies for the generation and incorporation of different prior information in astrometric solutions (HTPM paper; generic approach and theory following Bayes' rule), and evaluated their benefits. For example, TGAS would allow us the detection of hard-to-find long-period giant exoplanets.
[Published: 1/12/2010 | Updated: 21/03/2016]
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