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Table 5 Large SEP events of cycle 24 associated with weaker flares or backside eruptions (15 events)

From: Major solar eruptions and high-energy particle events during solar cycle 24

No. Flare date and time Flare size Flare location FR location B0 degree Final location Vskykm/s Vpkkm/s Max E MeV SEPbGOES SEPcSTA (B)
1 2010/08/14 09:38 C4.4 N12W56 S13W54 +6.6 S20W54 1,205 1,658 40 to 80 14 <0.1
2 2011/03/07 19:43 M3.7 N24W59 N32W58 −7.3 N39W58 2,125 2,660 40 to 80 50 200
3 2011/03/21 02:00 Back N24W129 N26W125 −7.0 N33W125 1,341 2,022 80 to 165 14 1,500
4 2011/06/07 06:16 M2.5 S21W54 S08W51 +0.1 S08W51 1,255 1,680 350 to 420 72 HiB
5 2011/11/26 06:09 C1.2 N08W49 N10W47 +1.5 N08W47 933 1,187 40 to 80 80 10
6 2012/05/26 20:40 Back N10W126 N11W115 −1.4 N12W115 1,966 2,623 15 to 40 14 1,500
7 2012/06/14 12:35 M1.9 S17W06 S26E02 +0.9 S27E02 987 1,626 15 to 40 14 -
8 2012/07/17 12:50 M1.7 S28W65 S27W79 +4.5 S32W79 958 1,881 40 to 80 136 10
9 2012/07/23 01:50 Back S17W141 N05W135 +5.1 N00W135 2,003 2,621 165 to 500 12 5,000
10 2012/08/31 19:24 C8.4 S19E42 S06E40 +7.2 S13E40 1,442 1,601 15 to 40 59 (3,500)
11 2012/09/27 23:24 C3.7 N06W34 N16W29 +6.9 N09W29 1,319 1,479 80 to 165 28 HiB
12 2013/03/15 05:42 M1.1 N11E12 N10E08 −7.2 N17E08 1,063 1,602 40 to 80 16 (0.6)
13 2013/09/29 21:43 C1.2 N23W25 N23W29 +6.8 N16W29 1,025 1,864 80 to 165 200 0.3
14 2013/12/28 17:16 Back S08W130 S01W127 −2.5 N02W127 1,133 1,918 80 to 165 30 1
15 2014/01/06 08:00 C2.1a S15W108 S06W102 −3.6 S02W102 1,293 2,287 >700 40 3
  1. aThe true flare size is unknown because part of the flare was occulted by the limb. bPeak >10 MeV flux detected by GOES; cPeak >10 MeV flux derived from STEREO/HET data. The numbers in parentheses are from STB; others are from STA; HiB = high CCSEP background.