VLBA13B-395

Substructure in the Scattering Disk of Sgr A*

Abstract

We propose observations to detect, or set limits on, substructure within the smooth scattering disk of the celebrated galactic center radio source SgrA*. Such structure is predicted theoretically, and it may have been detected in observations of pulsars with RadioAstron, and in earlier observations of SgrA*. Results will place constraints on the spatial spectrum of the electron-density fluctuations that are responsible for the scattering.

Investigators

Name	Institution
Nikolai Kardashev	Lebedev Physical Institute
Yuri Kovalev	Max-Planck-Institut für Radioastronomie
Michael Johnson	California at Santa Barbara, University of; Center for Astrophysics | Harvard & Smithsonian
Carl Gwinn *	California at Santa Barbara, University of

* indicates the PI