Kinematic Relationship Between Solar Extreme Ultraviolet Waves and Type II Metric Radio Bursts
Abstract
Solar extreme-ultraviolet (EUV) waves are large-scale disturbances that manifest as bright wavefronts, often during coronal mass ejections (CMEs). According to the magnetic field line stretching model, this phenomenon comprises two components: a fast-mode CME piston-driven shock wave and a slower, nonwave component. They are often associated with solar type II radio bursts. It is expected the radio source and the fast-mode EUV wave should come from different parts of the same shock, i.e., the CME piston-driven shock, and their speeds should be strongly correlated. To investigate this relationship, we utilized high spatiotemporal resolution observations from the Solar Dynamics Observatory in conjunction with radio data from the Radio Solar Telescope Network. Our analysis reveals that there exists a linear correlation between the EUV fast-mode speeds (veuv) and the shock speeds derived from metric (m) type II radio bursts (vradio), which is vradio=0.89veuv+51 kms−1, with a correlation coefficient of 0.77. This strong correlation suggests that original coronal EIT waves, which are about three times slower than type II radio bursts, are not fast-mode waves, and it is misleading to map type II radio bursts to EIT waves in the literature.
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BibTeX
@misc{chandra2026kinematic,
title = {{Kinematic Relationship Between Solar Extreme Ultraviolet Waves and Type II Metric Radio Bursts}},
author = {Ramesh Chandra and Apoorv Dashora and P. F. Chen and Pooja Devi},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.00930},
eprint = {2609.00930},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.00930},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Kinematic Relationship Between Solar Extreme Ultraviolet Waves and Type II Metric Radio Bursts
AU - Ramesh Chandra
AU - Apoorv Dashora
AU - P. F. Chen
AU - Pooja Devi
PY - 2026
DA - 2026/09/01
PB - arXiv
DO - 10.48550/arxiv.2609.00930
UR - https://arxiv.org/abs/2609.00930
AB - Solar extreme-ultraviolet (EUV) waves are large-scale disturbances that manifest as bright wavefronts, often during coronal mass ejections (CMEs). According to the magnetic field line stretching model, this phenomenon comprises two components: a fast-mode CME piston-driven shock wave and a slower, nonwave component. They are often associated with solar type II radio bursts. It is expected the radio source and the fast-mode EUV wave should come from different parts of the same shock, i.e., the CME piston-driven shock, and their speeds should be strongly correlated. To investigate this relationship, we utilized high spatiotemporal resolution observations from the Solar Dynamics Observatory in conjunction with radio data from the Radio Solar Telescope Network. Our analysis reveals that there exists a linear correlation between the EUV fast-mode speeds (v_euv) and the shock speeds derived from metric (m) type II radio bursts (v_radio), which is v_radio=0.89v_euv+51 kms^−1, with a correlation coefficient of 0.77. This strong correlation suggests that original coronal EIT waves, which are about three times slower than type II radio bursts, are not fast-mode waves, and it is misleading to map type II radio bursts to EIT waves in the literature.
ER -