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Research Article

Table 1

List of prompt SEP events with energies >10 MeV which occurred from May 2010 to December 2017.

SEP event
Associated Flare
Start time (ST) Promptnessa Peak time (PT) Class Locationb
08/14/2010 – 12:30 2 h 25 min 08/14/2010 – 10:05 C4 N17W52
03/08/2011 – 1:05 4 h 53 min 03/07/2011 – 20:12 M3 N24W59
03/21/2011 – 19:50 ~17 h 30 min 03/21/2011 – 02:18–02:40c N16W130 (Farside)c
06/07/2011 – 8:20 1 h 39 min 06/07/2011 – 6:41 M2 S21W64
08/04/2011 – 6:35 2 h 38 min 08/04/2011 – 3:57 M9 N15W64
08/09/2011 – 8:45 40 min 08/09/2011 – 8:05 X6 N17W83
11/26/2011 – 11:25 4 h 15 min 11/26/2011 – 7:10 C1 N8W49
01/23/2012 – 5:30 1 h 31 min 01/23/2012 – 3:59 M8 N28W36
01/27/2012 – 19:05 28 min 01/27/2012 – 18:37 X1 N27W71
03/07/2012 – 5:10 4 h 46 min 03/07/2012 – 0:24 X5 N17E15
03/13/2012 – 18:10 29 min 03/13/2012 – 17:41 M7 N18W62
05/17/2012 – 2:10 23 min 05/17/2012 – 1:47 M5 N12W89
5/27/2012 – 5:35 ~8 h 50 min 5/26/2012 – 20:40–21:00c N16W122 (Farside)c
07/07/2012 – 4:00 4 h 52 min 07/06/2012 – 23:08 X1 S18W50
07/12/2012 – 18:35 1 h 25 min 07/12/2012 – 17:10 X1 S16W09
07/17/2012 – 17:15 1 min 07/17/2012 – 17:15 M1 S17W75
07/23/2012 – 15:45 ~13 h 20 min 07/23/2012 – 02:10–02:35c S15W133 (Farside)c
09/28/2012 – 3:00 3 h 3 min 09/27/2012 – 23:57 C3 N08W41
04/11/2013 – 10:55 3 h 39 min 04/11/2013 – 7:16 M6 N09E12
05/22/2013 – 14:20 48 min 05/22/2013 – 13:32 M5 N15W70
09/30/2013 – 5:05 5 h 28 min 09/29/2013 – 23:37 C1 N15W40
12/28/2013 – 21:50 3 h 48 min 12/28/2013 – 18:02 C9 S18E07
01/06/2014 – 09:15 1 h 45 min 01/06/2014 – 07:30d C2.2d S13W83d
01/07/2014 – 19:30 58 min 01/07/2014 – 18:7:58!!32 X1 S15W11
02/20/2014 – 8:50 54 min 02/20/2014 – 7:56 M3 S15W67
04/18/2014 – 15:25 2 h 22 min 04/18/2014 – 13:03 M7 S16W41
06/18/2015 – 11:35 10 h 8 min 06/18/2015 – 01:27e M1.2e S16W91e
10/29/2015 – 05:50 ~3 h 20 min 10/29/2015 – 02:24–02:36f ~S11W135 (Farside)f
01/02/2016 – 4:30 4 h 19 min 01/02/2016 – 0:11 M2 S21W89
07/14/2017 – 9:00 6 h 51 min 07/14/2017 – 2:09 M2 S06W29
09/05/2017 – 0:40 4 h 7 min 09/04/2017 – 20:33 M5 S11W16
09/10/2017 – 16:45 39 min 09/10/2017 – 16:06 X8 S08W83
a

SEP promptness is calculated as ST (SEP event start time) – PT (SXR peak time).

b

The locations of the associated flares were extracted from the NOAA/NASA SEP list. For those locations which are identified as “farside”, the flare data were extracted from references in the Table footnotes cf.

c

The locations of these behind-the-west-limb flares were extracted from the SEPServer Catalog (Papaioannou et al., 2014). For each of these events, there is no SXR peak time; the SEPServer catalog provides the start and end times of the radio Type III burst associated with the solar parent event.

d

The SXR peak and time of the associated flare of this SEP event was reported by Thakur et al. (2014); however, no location is mentioned. The location of this flare was extracted from the Solar Monitor (solarmonitor.org).

e

The location of this flare was extracted from the Solar Monitor (solarmonitor.org).

f

There is no reference about the location of this behind-the-limb flare. Regarding the SEP event on October 29, 2015, Augusto et al. (2016) and Miteva et al. (2018) reported that at 2:24–2:36 UT on October 29, 2015, respectively, the associated CME was observed in the coronagraph imagery LASCO C2 instrument in the south-west sector of the Sun. Since the associated solar region was # 12434 (as reported in the NOAA SEP list at S11) and this region was at W90 at 21:00 UT on October 25 (source: solarmonitor.org), the heliolongitude of the associated solar flare was ~W135 at the beginning of October 29 when the reported CME took place, assuming a differential 25.5-day solar rotation at S11.

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