Table 1.
Characteristics of the type II burst lanes.
| Burst | Band | Start freq | End freq | Start time | End time | Drift rate | Radial velocity* | Radial velocity** | Freq ratio | Drift ratio |
|---|---|---|---|---|---|---|---|---|---|---|
| (MHz) | (MHz) | (UT) | (UT) | (kHz s−1) | (km s−1) | (km s−1) | (H/F) | (H/F) | ||
| 1 | LF | 77.61 | 44.07 | 17:30:42 | 17:33:52 | −157.48 | 1227.51 | 755.77 | ||
| LH | 148.14 | 110.55 | 17:30:41 | 17:32:22 | −361.30 | 1224.16 | 936.87 | 2.29 | 2.15 | |
| UF | 84.28 | 68.03 | 17:30:48 | 17:33:31 | −107.42 | 546.37 | 450.05 | |||
| UH | 177.81 | 121.39 | 17:30:42 | 17:34:24 | −239.77 | 632.60 | 460.30 | 1.98 | 1.92 | |
| 2 | F | 68.90 | 57.98 | 17:35:16 | 17:36:38 | −121.64 | 810.06 | 712.09 | ||
| H | 130.54 | 114.50 | 17:35:16 | 17:36:27 | −226.21 | 816.65 | 725.51 | 1.86 | 1.91 | |
| 3 | LF | 71.80 | 59.58 | 17:36:18 | 17:38:40 | −85.04 | 553.15 | 464.55 | ||
| LH | 139.48 | 111.05 | 17:36:17 | 17:38:40 | −200.22 | 709.25 | 574.23 | 2.35 | 1.91 | |
| MF | 75.86 | 64.81 | 17:36:18 | 17:38:39 | −77.88 | 443.09 | 388.16 | |||
| MH | 150.05 | 125.63 | 17:36:17 | 17:38:38 | −161.54 | 480.89 | 410.04 | 2.07 | 1.94 | |
| UF | 80.99 | 68.18 | 17:36:18 | 17:38:39 | −97.43 | 497.91 | 435.79 | |||
| UH | 159.90 | 133.10 | 17:36:17 | 17:38:16 | −216.04 | 568.12 | 493.56 | 2.22 | 1.95 | |
| 4 | F | 41.07 | 26.10 | 17:40:03 | 17:43:19 | −85.85 | 1939.38 | 1243.59 | ||
| H | 74.44 | 38.49 | 17:40:04 | 17:44:56 | −130.21 | 2075.31 | 1131.06 | 1.52 | 1.68 | |
Notes. The band labels here are the same used in Fig. 5, with the number signifying the four type II bursts to which the band belongs. The start and end points given are the mean frequency and time values from ten manual attempts to click on the first and last points on the burst lane. In all bursts except burst 4, the F emission began later than the H emission. The drift rate is the slope of the burst obtained via linear regression of the mean points. The radial velocities are estimated by two methods: the first method is by fitting the deduced radial distances from the 4× Newkirk model over time, and the second method is by using the drift rates (Morosan et al. 2019). The Alfvén Mach number is the mean value estimated from the band-splitting method. The start and end times are rounded to the nearest second for clarity. Uncertainties range from 0.02−0.61 MHz for start frequencies, 0.04−0.54 MHz for end frequencies, 27−903 ms for start times, and 59−446 ms for end times. * Radial velocity from the first method. ** Radial velocity from the second method.
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