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X-WR-CALNAME:Colloquium (Mark Gorski): A sub-pc Glimpse into The Cool Molec
 ular Gas Around Sgr A*
BEGIN:VEVENT
UID:2392a6e1-4615-482e-a1d7-7a3cd4b7d55e@events.stage.louisville.edu
DTSTAMP:20260621T071926Z
DTSTART:20260320T190000Z
DTEND:20260320T200000Z
SUMMARY:Colloquium (Mark Gorski): A sub-pc Glimpse into The Cool Molecular 
 Gas Around Sgr A*
CONTACT:Swagato Banerjee\, 502-852-0915\, email:swagato.banerjee@louisville
 .edu
DESCRIPTION:Speaker: Dr Mark Gorski, Northwestern University\n\nPlace: Na
 tural Sciences Building, Room 112 \n\n\nIn the last 50 years, significant
  progress has been made in understanding how supermassive black holes accr
 ete their gas from megaparsec scales down to the accretion disk (~10pc sca
 les). However, our understanding still lacks the final stages of accretion
 . Hiding behind the dust lanes of the Milky Way lies our best chance to st
 udy black hole physics, accretion, feeding, and feedback, Sagittarius A* (
 Sgr A*).  Here, I present a comprehensive view of the molecular gas surro
 unding Sgr A* from sub-light-year to parsec scales. I present the first ev
 er 0.01 pc (0.03 ly) resolution image of the CO(2-1) line, tracing cool (~
 100 K) molecular gas. The image is two orders of magnitude improved in sen
 sitivity and resolution compared to the previous most-sensitive interferom
 etric maps of the cool molecular gas. Through comparison with multi-wavele
 ngth observations spanning radio to X-ray wavelengths, this ongoing study 
 reveals several key findings. First, we reveal a large conical clearing in
 dicative of an outflow. Second, we calculate the CO-to-H2 conversion facto
 r in this crucial environment. Finally, I reveal indications of molecular 
 gas interacting with the supermassive black hole. This study provides the 
 clearest view yet of how molecular gas feeds Sgr A*. 
GEO:38.2139;-85.7597
LOCATION:Natural Sciences Building
URL:https://events.stage.louisville.edu/events/colloquium-mark-gorski-sub-p
 c-glimpse-cool-molecular-gas-around-sgr/2026-03-20
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