Table 1.
List of flares with a rising spectrum of sub-THz emission.
| Solar flare (GOES class) | Sub-THz (UT) | δ | F. density (sfu) | UV(UT) | AUV(arcsec2) |
|---|---|---|---|---|---|
| SOL2000-03-22T18:48 (X1.1)a | 18:50:00 |
 |
500 | 18:50:00 | 412 ± 51 |
| SOL2001-04-12T10:28 (X2.0)b | 10:17:54 |
 |
810† | 10:16:11 | 816 ± 189 |
| SOL2003-10-27T12:43 (M6.7)c | 12:32:30 |
 |
86† | 12:32:36 | 490 ± 143 |
| SOL2003-10-28T11:10 (X17)d | 11:16:12 |
 |
4500† | 11:16:20 | 3590 ± 506 |
| SOL2003-11-02T17:25 (X8.3)e | 17:19:30 |
 |
50 000 | 17:35:38 | 1268 ± 349 |
| SOL2003-11-04T19:50 (X28)f | 19:44:00 |
 |
18 000 | 19:43:11 | 1969 ± 390 |
| SOL2006-12-06T18:47 (X6.5)g | 18:43:51 |
 |
6800 | 18:43:53 | 2785 ± 182 |
| SOL2012-10-22T18:51 (M5.0)h | 18:48:30 |
 |
50 | 18:49:52 | 148 ± 56 |
| SOL2012-07-04T09:55 (M5.3)i‡ | 09:55:30 |
 |
39‡ | 09:57:04 | 142 ± 91 |
| SOL2012-07-05T11:44 (M6.1)j‡ | 11:44:24 |
 |
26‡ | 11:41:52 | 126 ± 51 |
| SOL2013-02-17T15:50 (M1.9)h | 15:46:25 |
 |
200 | 15:47:52 | 67 ± 27 |
| SOL2014-10-27T14:47 (X2.0)h | 14:22:50 |
 |
60 | 14:18:40 | 133 ± 53 |
| SOL2014-11-05T19:44 (M2.9)h | 19:53:40 |
 |
30 | 19:53:52 | 15.6 ± 15.4 |
| SOL2014-11-07T17:26 (X1.6)h | 17:25:30 |
 |
70 | 17:25:28 | 202 ± 99 |
Notes. The solar flare observation date, the GOES flare class, the time of maximum sub-THz emission, the spectral index, the radio flux density at 405 GHz (where available), the time the UV ribbon area is measured, and the UV ribbon area are presented. ( † ) Flux density at 345 GHz; 405 GHz data are not available. ( ‡ ) Flux density at 140 GHz. The radio spectral index was calculated using 140 GHz and 93 GHz data as the higher frequencies are not available.
References. Sub-THz radio data are from the following papers: (a)Kaufmann et al. (2001), Trottet et al. (2002), (b)Lüthi et al. (2004a), (c)Trottet et al. (2011), (d)Lüthi et al. (2004b), Trottet et al. (2008), (e)Silva et al. (2007), Kaufmann et al. (2009a), (f)Kaufmann et al. (2004, 2009b), (g)Kaufmann et al. (2009b), (h)Fernandes et al. (2017), (i)Tsap et al. (2016) and (j)Tsap et al. (2018).
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