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1.3mm CARMA Flux Density for Sgr A*

ATel #5018; Geoffrey C. Bower, Dick Plambeck (UC Berkeley), Dan Marrone (Arizona)
on 27 Apr 2013; 00:47 UT
Credential Certification: Geoffrey C Bower (gbower@astro.berkeley.edu)

Subjects: Millimeter, AGN, Black Hole, Transient

Referred to by ATel #: 5025

CARMA observed Sgr A* from 0958 to 1331 UT on 26 April 2013 at a mean frequency of 225 GHz. The array contained projected baselines from 10 to 180 klambda and produced a synthesized beam of 1.71 x 0.85 arcsec. Sgr A* appears as a point source with a flux density of 4.0 Jy. Comparison of flux densities for 3C 273, 3C 279, 3C 286, and J1743-038 with recent measurements indicates an accuracy of approximately 10%. The flux density for Sgr A* is consistent with historical values and not indicative of significant new activity. There is no other point source in the inner few arcseconds of the image.