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CATEGORIES:Galaxies Discussion Group
SUMMARY:Unveiling AGN Outflows: A High Resolution Morpholo
 gical Study with LOFAR-VLBI - Emmy Escott (Durham)
DTSTART;TZID=Europe/London:20250411T113000
DTEND;TZID=Europe/London:20250411T123000
UID:TALK226795AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/226795
DESCRIPTION:How AGN (Active Galactic Nuclei) feedback operates
  is one of the unsolved mysteries plaguing modern 
 day astronomy. AGN outflows could explain how this
  feedback operates and\, to investigate this\, I u
 se the [O III] emission line as a tracer of ionise
 d outflows. In this talk\, I will present work inv
 estigating the link between low-frequency radio em
 ission\, using the LOFAR Two-meter Sky Survey Deep
  Fields at 144 MHz\, and [O III] kinematics\, meas
 ured from SDSS spectroscopy\, for a sample of opti
 cally selected AGN. We discover that radio detecte
 d AGN are more likely to host an [O III] outflow c
 ompared to radio non-detected AGN. We observe a st
 ronger broad\, blue-shifted component in the radio
 -detected AGN\, implying a profound link between l
 ow-frequency radio emission and [OIII] outflows.\n
 To further link AGN outflows to low-frequency radi
 o emission\, we harness the power of widefield VLB
 I (Very Long Baseline Interferometry) processing a
 nd imaging by incorporating the international stat
 ions of LOFAR into the data reduction process\, to
  obtain sub-arcsecond radio images. To conclude th
 is talk\, I will present the first 0.3” resolution
  image at 144 MHz of the Boötes Deep Field and ear
 ly results linking high resolution radio morpholog
 ies at 144 MHz to the presence of [O III] outflows
 .
LOCATION:Ryle Seminar Room\, KICC + online
CONTACT:Sandro Tacchella
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