The 3.5mm Polarization and the Rotation Measure of Sgr A*

Details The 3.5mm Polarization and the Rotation Measure of Sgr A* The 3.5mm Polarization and the Rotation Measure of Sgr A*

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008atnf.prop.1444m&link_type=abstract

ATNF proposal C1727, Semester: April, 2008

Physics

Galactic, Atca

Scientific paper

Recent observations show Sgr A* exhibits polarization amplitude and large position angle fluctuations (PA) at mm and sub-mm wavelengths. It is unclear to what extent the PA fluctuations reflect intrinsic variability in the polarized emission close (< 20 R_S) to the black hole, or rotation measure fluctuations associated with variations in the accretion flow. We wish to measure the polarization fluctuations at 3mm across a wide band to definitively determine the origin of these PA variations and their implications for the accretion flow very close to the black hole at the Galactic Centre.

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