The Magnetic Field at the Galactic Center: Detection of HI Zeeman Splitting

Details The Magnetic Field at the Galactic Center: Detection of HI Zeeman Splitting The Magnetic Field at the Galactic Center: Detection of HI Zeeman Splitting

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aas...18311605p&link_type=abstract

American Astronomical Society, 183rd AAS Meeting, #116.05; Bulletin of the American Astronomical Society, Vol. 25, p.1467

Astronomy and Astrophysics

Astronomy

Scientific paper

We have used the VLA to search for Zeeman splitting of HI absorption against Sgr A West as a direct measurement of the magnetic field strength along the line of sight. Our preliminary results show that the magnetic field is preferentially pointed toward us in the region of the circumnuclear molecular gas north of Sgr A(*) with our best detection being -2.6 +/- 0.3 mG. This result is consistant with the marginal detections of a negative B--field using OH absorption in this same region by Killeen et al. 1992.

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