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

[Pooyan Goodarzi]

Reminder: happening in ~1.5 hours from now.

On Sat, Mar 29, 2025 at 14:49 Pooyan Goodarzi <pooyan.goodarzi at email.ucr.edu>
wrote:

> 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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