Hung-Yi Pu (卜宏毅)

2020-Present  Assistant Professor, Department of Physics, National Taiwan Normal University (NTNU) 

2020-present Visiting Scholar, Academia Sinica Institute of Astronomy & Astrophysics (ASIAA)

2017-2020  Postdoc, Perimeter Institute for Theoretical Physics (PI)

2013-2017 Postdoc, Academia Sinica Institute of Astronomy & Astrophysics (ASIAA)

2013 Ph.D., Department of Physics,  National Tsing-Hua University (NTHU)

Welcome to my homepage! I am an astrophysicist from Taiwan.

Fascinated by the beauty of spacetime and black holes, my current research focus on black hole astrophysics,  including the accretion and jet formation around black holes, their observable emission features, and the black hole shadow image.

Theoretical and mathematical tools for exploring these topics are theory of general relativity (GR), general relativistic magnetohydrodynamics (GRMHD), and general relativistic radiative transfer (GRRT). A brief introduction of my research area can be found on the Research page. My publications list is available via  ADS,  ORCID, or  Google Scholar.

First image of black hole (EHT collaboration).

I am a member of the Event Horizon Telescope (EHT) project, mainly working with EHT Theoretical Models and Simulation working group. I am also involved in the  Greenland Telescope  (GLT) project. Related works and some black hole shadow images can be found here.

Odessey_Edu saved image
The story about GRRT is related to the radiative transfer (and relativistic corrections) properties from  materials along the photon trajectories received by the observer. This plot demonstrates photon trajectories around a spinning black hole, assuming scattering effect is negligible. The image is produced by the public education software “Odyssey_Edu”  (Pu and Yun et al. 2016).
Within the funnel region of  rotating black holes,  large-scale, ordered magnetic filed lines are attached onto black hole event horizon, and the plasma is almost streaming along the field lines. The movie shows how the GRMHD flow structure in the funnel region varies with the black hole spin by using a semi-analytical approach. (Pu & Takahashi 2020)

contact information: hypu_at_gapps.ntnu.edu.tw