GBT26A-224

Mapping Cool Clouds in the Milky Way's Nuclear Wind

Abstract

We propose a GBT survey of a large (10x12 degree) region within the Milky Way's northern Fermi Bubble to map neutral HI clouds in the nuclear wind. This region bridges the gap between HI clouds near the Galactic Center and those recently discovered at higher latitudes (b > 25 degres; Bordoloi et al. 2025). The resulting legacy dataset will allow us to trace how HI column density and velocity vary with latitude, revealing the vertical structure of the outflow. Combined with HST UV absorption-line data tracing ionized gas, we will build the first comprehensive, multi-phase picture of the Milky Way's nuclear wind.

Investigators

Name	Institution
Enrico Di Teodoro	Firenze, Università degli Studi di
Jay Lockman	Green Bank Observatory
Rongmon Bordoloi *	North Carolina State University
Andrew Fox	Space Telescope Science Institute
Sapna Mishra	Space Telescope Science Institute
Doyeon Kim	Space Telescope Science Institute
Karlie Noon	Australian National University
Qingzheng Yu	Xiamen University; Firenze, Università degli Studi di

* indicates the PI