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arXiv · 1605.09644

A Study of the 2012 January 19 Complex Type II Radio Burst Using Wind, SOHO, and STEREO Observations

T. B. Teklu·A. V. Gholap·N. Gopalswamy·S. Yashiro·P. Mäkelä·S. Akiyama·N. Thakur·H. Xie
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Abstract

We report on a case study of the complex type II radio burst of 2012 January 19 and its association with a white light coronal mass ejection (CME). The complexity can be described as the appearance of an additional type II burst component and strong intensity variation. The dynamic spectrum shows a pair of type II bursts with fundamental harmonic structures, one confined to decameter-hectometric (DH) wavelengths and the other extending to kilometric (km) wavelengths. By comparing the speeds obtained from white-light images with that speed of the shock inferred from the drift rate, we show that the source of the short-lived DH component is near the nose.

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T. B. Teklu, A. V. Gholap, N. Gopalswamy, S. Yashiro, P. Mäkelä, S. Akiyama, N. Thakur, H. Xie. 2016-05-31. A Study of the 2012 January 19 Complex Type II Radio Burst Using Wind, SOHO, and STEREO Observations. https://arxiv.org/abs/1605.09644

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