Dual Nature of FRB Sources: From Coherent Bursts to Persistent Radio Emission
by
Tsung-Dao Lee Institute/N6F-N600 - Lecture Room
Tsung-Dao Lee Institute
Host: Zhen Pan
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Abstract:
Fast Radio Bursts (FRBs) are brief and intensely bright radio transients detected across vast cosmic distances. To date, hundreds of FRB sources have been discovered, with a significant subset exhibiting repeating behavior. Despite significant observational progress, the physical mechanisms powering FRBs are not yet fully understood, owing to the complexity and variety of the observed burst properties. This report examines key aspects of FRBs, beginning with the properties of the radio bursts, specifically their spectra and possible coherent emission mechanisms. It will then address the recent discovery of persistent radio sources (PRSs) associated with a growing number of repeating FRBs. I will present the observational features of these PRSs and investigate their connection to the FRB source environment. Concluding the report, we will discuss the potential implications of PRS characteristics for using FRBs as cosmological probes.
Biography:
Yuan-Pei Yang (杨元培) is an Associate Professor and PhD Supervisor at the South-Western Institute for Astronomy Research (SWIFAR), Yunnan University. He obtained his Ph.D. from Nanjing University in 2016. Subsequently, he was a Postdoctoral Fellow at the Kavli Institute for Astronomy and Astrophysics (KIAA) at Peking University from 2016 to 2019, during which he was selected for the 2016 China Postdoctoral Innovation Talent Support Program. Dr. Yang's research focuses on high-energy astrophysics, Fast Radio Bursts (FRBs), and astrophysical radiation mechanisms. He has authored or co-authored 78 papers in international astronomical journals, including 39 as first or corresponding author, accumulating over 2500 citations with an H-index of 29 (NASA/ADS). His work has been recognized with the IOP China Top Cited Author Award four times and has been prominently cited in leading international review articles and journals (including ARAA, RvMP, and Nature). Dr. Yang actively contributes to the academic community, serving as a long-term reviewer for prestigious international journals such as Nature Astronomy, ApJ, MNRAS, Science Bulletin and RAA. He has also led theoretical analysis efforts contributing to several significant international discoveries in Fast Radio Burst research.
