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The first 48-antenna stage of the Siberian Radioheliograph (SRH) startedsingle-frequency test observations early in 2016, and since August 2016 itroutinely observes the Sun at several frequencies in the 4-8 GHz range with anangular resolution of 1-2 arc minutes and an imaging interval of about 12seconds. With limited opportunities of the incomplete antenna configuration, ahigh sensitivity of about 100 Jy allows the SRH to contribute to the studies oferuptive phenomena along three lines. First, some eruptions are directlyvisible in SRH images. Second, some small eruptions are detectable even withouta detailed imaging information from microwave depressions caused by screeningthe background emission by cool erupted plasma. Third, SRH observations revealnew aspects of some events to be studied with different instruments. We focuson an eruptive C2.2 flare on 16 March 2016 around 06:40, one of the firstflares observed by the SRH. Proceeding from SRH observations, we analyze thisevent using extreme-ultraviolet, hard X-ray, white-light, and metric radiodata. An eruptive prominence expanded, brightened, and twisted, which indicatesa time-extended process of the flux-rope formation together with thedevelopment of a large coronal mass ejection (CME). The observations rule out apassive role of the prominence in the CME formation. The abrupt prominenceeruption impulsively excited a blast-wave-like shock, which appeared during themicrowave burst and was manifested in an "EUV wave" and Type II radio burst.The shock wave decayed and did not transform into a bow shock because of thelow speed of the CME. Nevertheless, this event produced a clear protonenhancement near Earth. Comparison with our previous studies of several eventsconfirms that the impulsive-piston shock-excitation scenario is typical ofvarious events.

journal of atmospheric and solar-terrestrial physics

Multi-instrument view on solar eruptive events observed with the  Siberian Radioheliograph: From detection of small jets up to development of a  shock wave and CME