Recent Developments and Future Possibilities for Studying the Baryon Cycle in Cosmic Ecosystems: From Shock Fronts to the Circumgalactic Medium

Dr. Emily Witt

Abstract: The baryon cycle encompasses all the ways gas and metals are processed and move through the galaxy. Far ultraviolet (FUV) radiation is crucial to probing hot to cold gas transition regions in this cycle, including the supernova (SN) ejecta/interstellar medium interface and the accretion of circumgalactic medium (CGM) material into the disk of its galaxy. Both SN shock fronts and gas in the CGM are extended sources that require spectroscopic imaging to adequately explore. Recent advances in FUV spectral multiplexing have made such studies possible for the first time. I will discuss observations of warm gas in SN remnant shock fronts made by the INFUSE sounding rocket payload, the first traditional FUV integral field spectrograph. I will then discuss continuing developments in spectral multiplexing and their use on future missions including the Habitable Worlds Observatory to study the low surface brightness CGM and advance our understanding of galactic feedback.

To participate in this event virtually via Zoom, go to https://uiowa.zoom.us/j/97684485973?pwd=523T1hSZIsCChlJA5Yzhbci7n1m38b.1&from=addon.