Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011rmxac..40..112b&link_type=abstract
XIII Latin American Regional IAU Meeting (Eds. W. J. Henney & S. Torres-Peimbert) Revista Mexicana de Astronomía y Astrofísica (
Astronomy and Astrophysics
Astronomy
Scientific paper
SgrA* is a compact radio source coincident with the position of the supermassive black hole at the center of our Galaxy. It is surrounded by a complex of HII regions, known as SgrA. SgrA* presents variable emission, from radio to X-rays, with timescales that range from hours to months. Interferometric observations at frequencies up to 22 GHz have detected a 106 days quasi-periodicity in the light curves of SgrA* (Zhao et al. 2001). In our work, we present the result of 43 GHz (7 mm) single dish observations obtained with the Itapetinga radiotelescope, located in Atibaia, Brazil, during several long lasting campaigns starting in 2006, which aimed to detect variability and verify the existence of periodicity.
Abraham Zulema
Beaklini Pedro Paulo B.
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