Speaker
Chen Li
Description
Based on the multi-messenger observations of some of the most prominent neutrino-emitting AGNs, namely NGC 1068, TXS 0506+056, NGC 4151, CGCG 420-015, Circinus Galaxy, and NGC 7469, we simulate corona model to fit their multi-messenger fluxes. Our model shows that corona X-rays are originated from within $\sim 10$ Schwarzschild radii of the SMBHs, with lower values preferred, and they absorb $\gamma$-rays produced by pions from $p \gamma$ process. Then we discuss how this might inspire our understanding of diffuse neutrino flux and extragalactic cosmic rays.
Authors
Chen Li
Prof.
Francis Halzen
(UW-Madison)