GBT01A-040

Corotation of the HI Halo in the Inner Galaxy

Abstract

Previous 21cm HI observations have suggested that the Galaxy has a neutral halo component of HI extending to perhaps 1 kpc from the Galactic plane and corotating with gas below it. Those observations, however, were prone to contamination by stray radiation and the properties of corotating halo gas, and even its existence, are in some doubt. I would like to measure Galactic HI profile shapes with distance from the plane at several longitudes to determine the extent of a corotating HI halo. The low sidelobes of the GBT are critical to the success of this experiment.

**Investigators**
Name	Other *	Institution	Email	Phone
Jay Lockman	PI	NRAO-GB	jlockman@gb.nrao.edu	304-456-2302

* PI = Principal Investigator; T = Thesis observations; S = Student

Front Ends

Gregorian L(1.15 to 1.73 GHz)

Back Ends

GBT Spectrometer
Spectral Processor

Type of Observing

Spectroscopy

Switching Type

Frequency switching

Allocated time: 105.00 hours.

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