GBT19A-337

Tracing the Fermi Bubble Wind with HI Clouds

Abstract

Energetic processes in the nuclear region of the Milky Way have created two large bubbles, the Fermi Bubbles, that are the signature of a Galactic wind. Using the ATCA and GBT we have recently discovered a population of HI clouds that are entrained in the wind, allowing us to estimate its energetics, mass loading, and expansion velocity. Our observations, however, did not establish the limits of the cloud distribution, so we request GBT time to map regions around our previous survey edge to determine the longitude and vertical extent of the Fermi Bubble HI cloud population. These data will provide unique information into the nuclear wind phenomenon, which is a feature of many galaxies and may help shape their evolution.

Investigators

Name	Institution
Jay Lockman	Green Bank Observatory
Naomi McClure-Griffiths *	Australian National University
Enrico Di Teodoro	Firenze, Università degli Studi di

* indicates the PI