26–30 juin 2023
LPSC Grenoble
Fuseau horaire Europe/Paris

Millimeter Interferometry: Radio Quiet Quasars and Galaxy Evolution

27 juin 2023, 14:50
20m
Room 9 (LPSC Grenoble)

Room 9

LPSC Grenoble

Orateur

Kirsten Hall (Center for Astrophysics | Harvard & Smithsonian)

Description

Despite recent discoveries of quasar feedback in action through outflows and jets, the amount of energy that the active nucleus is capable of injecting into the extended interstellar medium of the host galaxy remains unknown. The most mysterious component of quasar feedback is the lowest density, hot volume-filling gas. Though there are tentative detections of this component via its thermal Sunyaev-Zel'dovich (SZ) effect through stacking and targeted measurements, the results remain controversial. There is no consensus on how quasar winds are launched or how they become coupled to the host's interstellar medium or what is their physical extent into the circumgalactic medium of the host galaxy over the quasar lifetime. With targeted multi-wavelength interferometric observations, we are working to reveal the mysteries of the SZ effect and the mm-wave regime in z>2 quasars, separating individual quasars’ emission from their surrounding circumgalactic medium. I will discuss the status of these efforts using targeted VLA, ALMA, and SMA observations, and a vision for the future of mm-wave interferometry efforts as probes of galaxy evolution in active environments.

Auteur principal

Kirsten Hall (Center for Astrophysics | Harvard & Smithsonian)

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