The CGM in 1-D, 2-D, and 3-D (Round, Axisymmetric, and To Be Determined)

Time

4:00pm ET / 1:00pm PT

Speaker

Ben Oppenheimer | University of Colorado

Abstract

Today, I will introduce a set of 1-dimensional (“round”) models for gaseous atmospheres. This “Descriptive Parametric Model” is meant to be a community tool for you to model volume-filling gaseous halos spanning the CGM to the intracluster medium. What we will have fun doing is seeing how the same model compares to recent observations from the Ultraviolet, X-ray, sub-millimeter via the Sunyaev-Zel’dovich Effects, and radio via Fast Radio Burst dispersion measurements.

I then will move onto new COS observations targeting the axisymmetric structure of disc galaxies, following the final stages of accretion along the semi-major axis of inclined galaxies. This Cycle 31 program targets sight lines where we are guaranteed to observe many transitions, including OVI, OI, HI, CII, CIII, MgI, in addition to existing MgII.

Finally, I will discuss the future prospects of detecting complex 3-dimensional structures in outflows with HST in the UV and JWST in the near and mid-IR. JWST is in fact an ideal platform to observe molecular outflows around galaxies in the local universe. HST still has a lot of opportunities to constrain theoretical models of outflows.

Seminar information can be found here.

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