VLBA Synthesis Imagings of SgrA* at 43 GHz

Details VLBA Synthesis Imagings of SgrA* at 43 GHz VLBA Synthesis Imagings of SgrA* at 43 GHz

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aspc..439..386m&link_type=abstract

The Galactic Center: a Window to the Nuclear Environment of Disk Galaxies. Proceedings of a workshop held at Shanghai, China on

Astronomy and Astrophysics

Astronomy

Scientific paper

From the VLBA archival data of SgrA* at 43 GHz, we made synthesis images by applying solutions from self calibration method using the previously estimated shape of SgrA* as a model image. From comparisons with the previous estimations using closure amplitude and/or phase, we found that consistent sizes and shapes of SgrA* at 43GHz are obtained from our images. Admitting the bad observational conditions with low elevations and poor u-v, the VLBA imaging of SgrA* at 43 GHz can be performed with better reliability than the present common recognition.

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