Astro Seminar Series - VIA ZOOM

Prof Masahiro Takada did his PhD at Tohoku University in Japan in 2001 studying weak lensing effect on the cosmic microwave background, and then spent three years to develop more substantial expertise at University of Pennsylvania as a postdoc for 2001-2004. Now he is Principal Investigator and a full professor at  Kavli IPMU, the University of Tokyo. After coming back to Japan, he has been playing leadership roles of the wide-field Subaru galaxy survey projects, the ongoing Hyper Suprime-Cam (HSC) imaging survey and the upcoming Prime Focus Spectrograph (PFS) spectroscopic survey. He has been working on both theory and analyses of large-scale structure cosmology that can be done using weak lensing and galaxy clustering observable from wide-area galaxy surveys. Recently he is also working on microlensing search of primordial black holes, which are one of viable dark matter candidates and proper motion measurements of distant stars. 

Talk title and abstract

Title: Constraining primordial black holes with microlensing 

Primordial black holes (PBHs) could form in the early universe and are a viable candidate of dark matter that drives formation of cosmic hierarchical structures in the universe. Microlensing, the prediction of Einstein’s gravity theory, is a powerful way of pursuing PBHs in the Milky Way or Andromeda Galaxy. Here I would like to present our recent studies on microlensing search of PBHs from the Subaru Hyper Suprime-Cam and OGLE datasets. 

Would you like to join this Zoom seminar?  Please email WCA.