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Short Solar Radio Bursts Imaged for the First Time by LOFAR

posted Jul 29, 2015, 9:34 AM by I LOFAR   [ updated Jul 29, 2015, 9:37 AM ]

The Solar Physics Group at TCD are delighted to report that they have made more progress in imaging bursts of radio waves from the Sun using LOFAR. The short solar radio bursts (S bursts) observed on 9 July 2013 by LOFAR can be seen in the movie below. The top panel shows the solar radio bursts imaged (S bursts) while the bottom panels show where these radio bursts originate on the Sun. This movie is the first of its kind imaging radio sources on the Sun at 50 ms cadence. So far radio imaging has been limited to a quarter of a second. The actual duration of the events occurring in the movie is only 4 s. This movie shows that the radio Sun is very active on very short timescales despite appearing relatively quiet at other wavelengths. These results will be published in the journal Astronomy & Astrophysics and they are key to understanding how electrons can be accelerated in the solar atmosphere and on other stars as well as planets in our Universe.