Free Access
Table 1
Solar energetic particle events recorded onboard STA from 2007–2012.
| LET-A 6–10 MeV protons | SEPT-A 55–85 keV electrons | ||||||
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| No. | Date | Onset | Peak | Peak | Onset | Peak | Peak |
| time | time | value | time | time | value | ||
| (UT) | (UT) | (cm-2 s-1 sr-1 MeV-1) | (UT) | (UT) | (cm-2 s-1 sr-1 MeV-1) | ||
|
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| 0 | 2007 May 19 | 16:45 | 23:45 | 2.25E-02 | 13:50 | 18:05 | 7.28E+02 |
| 1 | 2007 May 23 | 10:25 | 3:45 (144 DOY) | 1.32E-02 | 6:30 | 10:25 | 5.56E+02 |
| 2 | 2008 Apr. 5 | 20:20 | 21:00 | 1.50E-03 | 16:32 | 16:45 | 4.56E+02 |
| 3 | 2008 Dec. 11 | 11:50 | 13:30 | 1.90E-03 | 9:58 | 10:36 | 2.46E+01 |
| 4 | 2009 May 2 | – | – | – | 20:02 | 20:46 | 8.21E+02 |
| 5 | 2009 May 5 | 10:30 | 13:30 | 7.40E-03 | 8:44 | 9:25 | 5.03E+02 |
| 6 | 2009 Nov. 3 | 5:20 | 8:20 | 2.60E-03 | 3:57 | 4:25 | 2.78E+03 |
| 7 | 2009 Nov. 5 | 8:00 | 13:00 | 8.00E-04 | 0:16 | 3:06 | 4.29E+02 |
| 8 | 2009 Dec. 22 | 8:20 | 15:50 | 4.20E-03 | 6:26 | 7:26 | 3.40E+01 |
| 9 | 2010 Jan. 17 | 7:40 | 15:00 | 5.03E-02 | 5:18 | 9:15 | 2.44E+02 |
| 10 | 2010 Feb. 8 | – | – | – | 8:28 | 12:53 | 9.10E+01 |
| 11 | 2010 Feb. 12 | 13:00 | 4:20 (44 DOY) | 1.40E-03 | 13:05 | 19:25 | 7.34E+02 |
| 12 | 2010 Feb. 14 | 23:00 | 3:20 (46 DOY) | 2.10E-03 | 2:53 | 4:45 | 2.72E+02 |
| 13 | 2010 Mar. 2 | 4:50 | 19:00 | 1.28E-02 | 15:37 | 15:56 | 4.81E+02 |
| 14 | 2010 Jun. 12 | 5:20 | 19:00 | 4.20E-03 | 2:05 | 7:35 | 2.40E+02 |
| 15 | 2010 Aug. 14 | 13:10 | 00:40 (DOY 228) | 4.12E-02 | 10:53 | 17:05 | 1.41E+02 |
| 16 | 2010 Aug. 18 | 7:20 | 10:30 | 1.82E+00 | 6:10 | 9:26 | 8.43E+03 |
| 17 | 2010 Sep. 9 | 2:00 | 9:00 | 2.15E-01 | 1:03 | 6:55 | 3.22E+02 |
| 18 | 2010 Nov. 26 | 16:30 | 4:20 (DOY 331) | 2.25E-02 | 15:35 | 21:16 | 4.95E+02 |
| 19 | 2011 Jan. 6 | – | – | – | 12:55 | 14:35 | 5.58E+01 |
| 20 | 2011 Jan. 27 | 13:40 | 16:50 | 1.34E-02 | 9:04 | 9:15 | 1.13E+03 |
| 21 | 2011 Jan. 28 | 2:40 | 6:29 | 1.97E-01 | 1:26 | 2:55 | 1.30E+03 |
| 22 | 2011 Jan. 31 | 22:30 | 23:10 | 1.16E-02 | 17:38 | 23:15 | 2.08E+02 |
| 23 | 2011 Feb. 7 | 18:40 | 23:20 | 1.70E-03 | 13:28 | 23:25 | 1.70E+02 |
| 24 | 2011 Mar. 4 | 16:30 | 17:20 | 7.50E-03 | 14:33 | 14:55 | 1.06E+04 |
| 25 | 2011 Mar. 7 | 23:40 | 9:10 (DOY 68) | 8.80E+01 | 21:53 | 14:08 | 8.32E+02 |
| 26 | 2011 Mar. 12 | 20:30 | 3:10 (DOY 72) | 1.46E-01 | – | – | – |
| 27 | 2011 Mar. 16 | 22:30 | 21:20 (DOY 76) | 8.22E-02 | – | – | – |
| 28 | 2011 Mar. 21 | 3:20 | 18:20 (DOY 81) | 3.03E+02 | 2:34 | 4:15 | 2.70E+05 |
| 29 | 2011 Mar. 30 | 2:40 | 15:40 | 4.27E-01 | 23:25 (DOY 88) | 7:05 | 2.77E+02 |
| 30 | 2011 Apr. 8 | 5:30 | 10:30 | 2.95E-01 | 4:28 | 7:45 | 9.39E+03 |
| 31 | 2011 Apr. 17 | 18:20 | 0:10 (DOY 108) | 8.20E-03 | 17:28 | 18:35 | 2.92E+03 |
| 32 | 2011 Apr. 21 | 3:30 | 8:10 | 1.23E-01 | 2:45 | 6:35 | 1.33E+02 |
| 33 | 2011 Apr. 27 | 10:50 | 6:50 (DOY 118) | 3.30E-03 | 10:05 | 15:05 | 8.80E+01 |
| 34 | 2011 Apr. 30 | 15:30 | 2:30 (DOY 121) | 1.00E-03 | 6:49 | 8:35 | 8.06E+02 |
| 35 | 2011 May 19 | 4:40 | 12:30 | 2.99E-02 | 1:25 | 7:35 | 2.75E+02 |
| 36 | 2011 Jun. 4 | 8:20 | – | – | 7:31 | 2:45 | 1.40E+06 |
| 37 | 2011 Jun. 17 | 22:00 | 18:40 (DOY 169) | 5.81E-02 | – | – | – |
| 38 | 2011 Jul. 10 | 13:30 | 7:20 (DOY 192) | 3.40E-03 | – | – | – |
| 39 | 2011 Jul. 25 | 17:30 | 8:00 ( DOY 207) | 6.00E-04 | 14:45 | 17:15 | 1.90E+02 |
| 40 | 2011 Jul. 26 | 11:10 | 12:50 | 3.94E-01 | 10:08 | 10:45 | 5.94E+04 |
| 41 | 2011 Aug. 4 | 12:00 | 12:50 (DOY 219) | 3.53E-01 | 11:55 | 9:05 | 6.58E+02 |
| 42 | 2011 Aug. 10 | 23:20 | 13:20 (DOY 223) | 1.27E+00 | 20:38 | 12:25 | 1.12E+04 |
| 43 | 2011 Aug. 11 | 19:30 | 21:21 | 1.24E+00 | 19:12 | 23:35 | 8.94E+03 |
| 44 | 2011 Aug. 16 | 9:30 | 17:10 | 6.30E-03 | 8:50 | 10:05 | 8.79E+02 |
| 45 | 2011 Aug. 24 | 4:20 | 9:30 | 1.69E-01 | 6:08 | 8:05 | 2.39E+02 |
| 46 | 2011 Aug. 28 | 19:30 | 9:40 (DOY 241) | 5.30E-03 | 14:53 | 9:08 | 1.90E+02 |
| 47 | 2011 Sep. 3 | 5:10 | 3:40 (DOY 247) | 6.90E-03 | 3:55 | 6:55 | 1.80E+02 |
| 48 | 2011 Sep. 7 | 21:40 | 6:50 (DOY 251) | 1.58E-01 | 19:17 | 19:25 | 1.04E+03 |
| 49 | 2011 Sep. 22 | 13:20 | 8:40 (DOY 266) | 4.47E+00 | 23:44 | 4:55 | 4.90E+03 |
| 50 | 2011 Oct. 4 | 16:00 | 17:20 (DOY 278) | 3.87E+00 | 14:45 | 3:05 | 1.19E+04 |
| 51 | 2011 Oct. 13 | 15:10 | 15:40 (DOY 288) | 4.02E-02 | – | – | – |
| 52 | 2011 Oct. 22 | 21:30 | 12:30 (DOY 298) | 1.38E+00 | 15:35 | 15:55 | 1.51E+02 |
| 53 | 2011 Nov. 3 | 23:30 | 5:20 (DOY 308) | 1.57E+01 | 22:42 | 1:15 | 9.55E+04 |
| 54 | 2011 Nov. 12 | 22:40 | 4:40 (DOY 317) | 5.63E-02 | 8:05 | 12:45 | 2.41E+02 |
| 55 | 2011 Nov. 13 | 23:00 | 5:00 (DOY 318) | 6.34E-01 | 20:25 | 4:35 | 6.86E+02 |
| 56 | 2011 Nov. 17 | 1:10 | 0:10 (DOY 323) | 3.76E-02 | 23:15 | 4:25 | 1.10E+03 |
| 57 | 2011 Nov. 23 | 12:20 | 4:10 (DOY 328) | 3.30E-02 | 11:05 | 12:25 | 9.84E+01 |
| 58 | 2011 Nov. 25 | 14:20 | 16:10 | 2.07E-02 | – | – | – |
| 59 | 2011 Nov. 26 | 11:20 | 15:10 (DOY 332) | 1.56E+01 | 10:35 | 20:55 | 3.54E+04 |
| 60 | 2011 Dec. 3 | 10:50 | 12:30 | 4.44E-02 | 2:15 | 11:15 | 3.46E+02 |
| 61 | 2011 Dec. 7 | 12:00 | 14:00 | 2.33E-02 | 10:25 | 12:55 | 1.33E+02 |
| 62 | 2011 Dec. 8 | 1:40 | 15:00 | 3.00E-01 | 21:15 | 5:15 | 2.31E+03 |
| 63 | 2011 Dec. 11 | 15:20 | 19:20 | 1.15E-02 | 14:37 | 15:35 | 5.98E+03 |
| 64 | 2011 Dec. 17 | 15:10 | 1:30 (DOY 352) | 3.18E-01 | 9:21 | 9:25 | 1.43E+03 |
| 65 | 2011 Dec. 19 | 20:50 | 21:20 | 2.02E-01 | 13:05 | 13:45 | 2.44E+03 |
| 66 | 2011 Dec. 20 | 11:30 | 4:20 (DOY 355) | 3.41E-01 | – | – | – |
| 67 | 2012 Jan. 2 | 3:20 | 4:00 | 9.47E-02 | 1:35 | 4:05 | 5.52E+02 |
| 68 | 2012 Jan. 2 | 18:10 | 12:20 (DOY 3) | 1.39E-01 | 15:45 | 22:25 | 7.35E+02 |
| 69 | 2012 Jan. 12 | 10:50 | 15:40 | 4.05E-02 | 9:25 | 11:25 | 1.36E+02 |
| 70 | 2012 Jan. 21 | 16:00 | 12:20 (DOY 25) | 2.25E+01 | |||
| 71 | 2012 Feb. 16 | 10:00 | 14:20 | 6.00E-03 | 7:12 | 8:15 | 1.69E+03 |
| 72 | 2012 Feb. 24 | 18:42 | 0:50 (DOY 56) | 4.90E-03 | 18:10 | 0:10 | 9.49E+01 |
| 73 | 2012 Feb. 25 | 20:50 | 6:50 (DOY 58) | 1.97E-01 | 20:25 | 6:15 | 1.97E+03 |
| 74 | 2012 Feb. 29 | 11:30 | 16:30 | 1.78E-01 | 9:45 | 15:05 | 2.30E+03 |
| 75 | 2012 Mar. 4 | 21:30 | 1:00 (DOY 65) | 2.20E-03 | 13:45 | 23:55 | 9.14E+02 |
| 76 | 2012 Mar. 5 | 11:20 | 7:10 (DOY 66) | 5.54E-02 | – | – | – |
| 77 | 2012 Mar. 7 | 4:50 | 15:20 | 4.72E-01 | 1:38 | 4:15 | 2.33E+03 |
| 78 | 2012 Mar. 9 | 6:50 | 4:10 (DOY 72) | 7.28E+00 | 5:18 | 1:05 | 1.17E+05 |
| 79 | 2012 Mar. 18 | 3:30 | 19:30 (DOY 79) | 7.77E+01 | 2:45 | 7:15 | 1.30E+04 |
| 80 | 2012 Mar. 20 | 12:00 | 15:00 | 2.19E-01 | – | – | – |
| 81 | 2012 Mar. 21 | 9:20 | 20:50 | 1.48E+01 | 7:45 | 8:05 | 5.52E+04 |
| 82 | 2012 Mar. 24 | 2:10 | 4:50 | 1.63E+01 | 0:36 | 2:05 | 6.17E+04 |
| 83 | 2012 Apr. 7 | 21:20 | 5:40 (DOY 99) | 5.02E+00 | 17:03 | 1:55 | 1.74E+03 |
| 84 | 2012 Apr. 15 | 4:30 | 11:50 | 3.41E-02 | 3:03 | 6:25 | 7.91E+02 |
| 85 | 2012 Apr. 17 | 3:00 | 8:10 | 3.92E-02 | 18:35 | 20:45 | 2.87E+02 |
| 86 | 2012 Apr. 17 | 18:50 | 19:30 | 4.80E-03 | 17:35 | 17:45 | 8.79E+02 |
| 87 | 2012 Apr. 18 | 5:10 | 5:50 | 1.90E-02 | 2:40 | 3:55 | 2.41E+04 |
| 88 | 2012 Apr. 27 | 19:40 | 6:00 (DOY 119) | 2.14E-02 | 18:05 | 19:45 | 7.36E+02 |
| 89 | 2012 Apr. 28 | 20:10 | 7:50 (DOY 120) | 6.66E-01 | 16:15 | 12:35 | 2.74E+04 |
| 90 | 2012 May 1 | 17:50 | 4:20 (DOY 123) | 9.10E-03 | 16:14 | 16:25 | 2.07E+03 |
| 91 | 2012 May 5 | 8:10 | 22:30 | 1.10E-02 | 5:33 | 8:05 | 9.32E+01 |
| 92 | 2012 May 10 | 22:30 | 12:40 (DOY 132) | 1.18E-02 | 22:30 | 16:30 | 4.69E+02 |
| 93 | 2012 May 17 | 11:10 | 17:50 (DOY 139) | 1.32E+01 | 5:00 | >22:30 | – |
| 94 | 2012 May 26 | 22:10 | 3:30 (DOY 148) | 1.00E+01 | 21:08 | 2:05 | 2.92E+04 |
| 95 | 2012 May 27 | 12:20 | – | – | – | – | – |
| 96 | 2012 Jun. 12 | 9:00 | 19:00 | 2.03E+01 | 5:38 | 6:05 | 1.45E+03 |
| 97 | 2012 Jun. 15 | 16:50 | 18:40 (DOY 171) | 4.80E-03 | – | – | – |
| 98 | 2012 Jun. 23 | 16:20 | 8:10 (DOY 176) | 5.50E-03 | – | – | – |
| 99 | 2012 Jun. 24 | 17:10 | 14:50 (DOY 177) | 2.49E-02 | – | – | – |
| 100 | 2012 Jun. 28 | 6:50 | 10:50 | 5.45E-02 | 6:18 | 7:45 | 9.89E+03 |
| 101 | 2012 Jun. 30 | 19:40 | 23:10 | 1.05E-01 | – | – | – |
| 102 | 2012 Jul. 2 | 10:30 | 15:30 | 2.12E-01 | 08:43 | 10:15 | 6.25E+03 |
| 103 | 2012 Jul. 6 | 11:30 | 15:50 | 1.49E-02 | 0:00 | 14:30 | 2.41E+02 |
| 104 | 2012 Jul. 7 | 9:30 | 23:50 | 1.76E-01 | 1:55 | 11:55 | 1.85E+03 |
| 105 | 2012 Jul. 8 | 16:00 | 10:50 (DOY 191) | 2.34E+00 | 14:43 | 16:15 | 1.16E+04 |
| 106 | 2012 Jul. 18 | 6:20 | 11:10 | 2.35E+00 | 6:33 | 7:45 | 6.71E+03 |
| 107 | 2012 Jul. 23 | 4:00 | 22:30 | 3.79E+03 | 2:40 | 22:45 | 4.76E+06 |
| 108 | 2012 Aug. 10 | 14:40 | 3:40 (DOY 224) | 9.78E-01 | 13:23 | 20:55 | 5.44E+03 |
| 109 | 2012 Aug. 17 | 19:10 | 12:50 (DOY 231) | 6.90E-03 | 9:45 | 7:55 | 5.72E+03 |
| 110 | 2012 Aug. 19 | 6:00 | 6:50 | 1.09E+00 | 4:58 | 5:15 | 8.14E+03 |
| 111 | 2012 Aug. 25 | 21:40 | 0:40 (DOY 239) | 2.99E-02 | 18:05 | 22:15 | 3.53E+02 |
| 112 | 2012 Sep. 1 | 11:10 | 22:50 | 2.10E-03 | 4:45 | 19:45 | 1.21E+02 |
| 113 | 2012 Sep. 9 | 1:10 | 5:20 | 2.35E-01 | – | – | – |
| 114 | 2012 Sep. 17 | 0:20 | 3:50 | 4.70E-03 | 0:25 | 0:55 | 1.80E+02 |
| 115 | 2012 Sep. 19 | 15:30 | 15:37 | 5.08E+01 | 11:42 | 13:15 | 1.25E+04 |
| 116 | 2012 Sep. 27 | 12:30 | 13:00 (DOY 272) | 1.60E+02 | 10:43 | 13:55 | 2.55E+05 |
| 117 | 2012 Oct. 8 | 9:30 | 16:30 (DOY 283) | 4.10E-03 | 22:35 | 2:35 | 4.15E+02 |
| 118 | 2012 Oct. 14 | 2:20 | 10:40 | 6.41E-01 | 1:02 | 2:45 | 2.95E+03 |
| 119 | 2012 Oct. 19 | 22:00 | 3:20 (DOY 294) | 5.10E-03 | 17:55 | 18:55 | 6.73E+02 |
| 120 | 2012 Oct. 22 | 3:40 | 8:00 | 4.00E-03 | 23:58 | 4:35 | 3.66E+02 |
| 121 | 2012 Nov. 3 | 21:30 | 4:20 (DOY 309) | 2.60E-03 | – | – | – |
| 122 | 2012 Nov. 6 | 18:32 | 21:10 | 2.30E-03 | 14:03 | 17:35 | 1.78E+03 |
| 123 | 2012 Nov. 8 | 11:30 | 4:10 (DOY 314) | 2.11E+01 | 11:00 | 11:45 | 2.30E+04 |
| 124 | 2012 Nov. 24 | 1:00 | 14:20 | 4.89E+00 | 23:36 | 1:35 | 4.38E+03 |
| 125 | 2012 Nov. 27 | 20:30 | 23:30 | 1.88E-02 | – | – | – |
| 126 | 2012 Dec. 2 | 18:30 | 1:00 (DOY 338) | 7.24E-02 | 16:42 | 18:25 | 1.82E+03 |
| 127 | 2012 Dec. 5 | 6:20 | 13:30 | 1.87E-02 | – | – | – |
| 128 | 2012 Dec. 10 | 20:20 | 0:00 (DOY 346) | 4.90E-03 | 22:35 | 23:35 | 1.42E+02 |
| 129 | 2012 Dec. 17 | 0:00 | 3:30 (DOY 353) | 4.90E-02 | 21:45 | 0:25 | 8.35E+02 |
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