Hung-Yi Pu (卜宏毅)

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.

20190410-78m-4000x2330 — 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).

f1_a — 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)

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Hung-Yi Pu (卜宏毅)

contact information: hypu_at_gapps.ntnu.edu.tw