[Physics-grads-open] PASS talk on observational astronomy

[Pooyan Goodarzi]

Hi all,

We will have our first PASS talk of the quarter on Monday by Johnson 
Jiang. Please join us at noon (*from 1:00 pm* to 2:00 pm) in the Nebula 
Room (PHYS 3027).

*Please note the unusual time of the talk.*


*Johnson Jiang**, PhD student*
Monday, 1:00 pm, Nebula Room (PHYS 3027)
*Scattered synchrotron emission revealed in polarized light*

Centaurus A is the nearest radio galaxy and a prototypical 
low-luminosity active galactic nucleus (AGN), exhibiting complex 
emission across the electromagnetic spectrum. The nature of its 
continuum emission, particularly the mechanisms powering it, remains 
debated due to heavy dust obscuration preventing direct observation of 
the AGN. I present spectropolarimetric observations of Centaurus A with 
VLT/FORS2 that covers the 6100−10300 Å spectral range, providing a 
periscopic view of the central engine. A strict upper limit is placed on 
the power of the accretion flow and we confirm for the first time that 
scattered beamed synchrotron emission is observed in reflection. 
Interestingly, spectropolarimetry also reveals Centaurus A as a hidden 
narrow-line region (NLR) AGN with a giant torus. Additionally, I present 
a spectropolarimetric study of 3C 270 (NGC 4261).

If you’re interested in sharing your work as a speaker, please feel free 
to add your name to this spreadsheet [Google Sheet 
<https://docs.google.com/spreadsheets/d/1N3ncf43jdB6aHYHhyWmyHMycxDg4_phHZXLkQvviO0o/edit?usp=sharing>]. 
Recordings of all of the last quarter's talks are available at our 
website: https://ucrpass.arxiv.social


Best,
Pooyan
Physics and Astronomy Student Seminar (PASS)
https://ucrpass.arxiv.social
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