Research Article
Studies on Longer Wavelength Type II Radio Bursts Associated with Flares and CMEs during the Rise and Decay Phase of 23rd Solar Cycle
Table 1
Properties of DH-type II bursts, flares, and CMEs in solar cycle rise phase and solar cycle decay phase events.
| Serial
number | Properties | Solar cycle
rise phase events | Solar cycle
decay phase events | -test
value (%) |
| | | DH-type II bursts | | 1 | Start frequency (MHz) | 10.65 (0.38) | 10.12 (0.47) | 37.71 | | 2 | End frequency (MHz) | 2.48 (0.26) | 1.78 (0.25) | 5.55 | | 3 | Duration (min) | 441 (67.92) | 369 (61.09) | 43.04 | | 4 | Type II speed (km s−1) | 1135 (71.50) | 1260 (79.71) | 25.51 |
| | | Flares | | 5 | Flare duration (min) | 53 (4.27) | 59 (4.35) | 33.64 | | 6 | Flare rise time (min) | 26 (1.89) | 31 (2.47) | 8.84 | | 7 | Flare decay time (min) | 27 (2.75) | 28 (2.67) | 84.99 |
| | | CMEs | | 8 | CME speed (km s−1) | 1058 (47.53) | 1377 (58.02) |
≪1 | | 9 | Width (deg) | 260 (10.42) | 276 (10.59) | 26.59 | | 10 | Acceleration (m s−2) | −1.32 (2.29) | −15.18 (4.45) | 2.01 |
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The mean (standard error) values of the properties are given in this table.
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