A Study of the 2012 January 19 Complex Type II Radio Burst Using Wind, SOHO, and STEREO Observations
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.
- Publication:
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arXiv e-prints
- Pub Date:
- May 2016
- DOI:
- 10.48550/arXiv.1605.09644
- arXiv:
- arXiv:1605.09644
- Bibcode:
- 2016arXiv160509644T
- Keywords:
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- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 4 pages, 3 figures, contributed paper to be presented at the URSI Asia-Pacific Radio Science Conference in Seoul, August 21-25, 2016