Search for solar neutrons at Mount Chacaltaya associated with M- and X-class flares during the rising period of solar cycle 24

Lopez, Diego; Matsubara, Yutaka

doi:10.1186/s40623-015-0222-2

Earth, Planets and Space

Table 1 List of soft X-ray flares observed by GOES (considering initial conditions) and the local time of possible observation in Mt. Chacaltaya

From: Search for solar neutrons at Mount Chacaltaya associated with M- and X-class flares during the rising period of solar cycle 24

Conditions	Solar flare				Observation site
Date	Start	t P a	Class	Position	\({t}_{0}^{~\mathrm {b}}\)	\(\theta _{\odot }^{~~\mathrm {c}}\)	Air mass ^d	α ^e
	(UT)	(UT)			(UT-4)	[deg]	[g/cm ² ]	(NM-64)
2005 Sep 07 ^f	17:17	17:40	X17.0	S06E89	13:17	28	612	1.7 ± 0.2
2010 Oct 16	19:07	19:12	M2.9	S20W26	15:07	42	724	1.7 ± 0.3
2010 Nov 06	15:27	15:36	M5.4	S19E58	11:27	12	551	1.8 ± 0.2
2011 Feb 13	17:28	17:38	M6.6	S20E04	13:28	10	541	1.6 ± 0.3
2011 Feb 14	17:20	17:26	M2.2	N56W18	13:20	9	540	1.8 ± 0.2
2011 Aug 03	13:17	13:48	M6.0	N16W30	09:17	60	773	1.9 ± 0.3
2011 Sep 24	12:33	13:20	M7.1	N14E45	08:33	59	792	1.4 ± 0.2
2011 Sep 24	17:19	17:25	M3.1	N15E56	13:19	21	547	1.3 ± 0.2
2011 Sep 24	19:09	19:21	M3.0	N15E54	15:09	43	627	1.6 ± 0.2
2011 Sep 24	20:29	20:36	M5.8	N16E54	16:29	62	786	1.6 ± 0.2
2011 Sep 25	15:26	15:33	M3.7	N16E43	11:26	21	552	1.5 ± 0.1
2011 Sep 25	16:51	16:58	M2.2	S28W75	12:51	17	543	1.7 ± 0.3
2011 Sep 26	14:37	14:46	M2.6	N14E30	10:37	30	580	1.6 ± 0.2
2011 Oct 02	17:19	17:23	M1.3	N09W56	13:19	19	570	1.6 ± 0.2
2011 Nov 03	20:16	20:27	X1.9	N22E63	16:16	58	716	1.5 ± 0.2
2012 Mar 02	17:29	17:46	M3.3	N16E83	13:29	14	543	1.7 ± 0.2
2012 Mar 05	19:10	19:10	M2.1	N14E44	15:10	37	617	1.9 ± 0.2
2012 Mar 10	17:15	17:44	M8.4	N18W34	13:15	15	543	1.9 ± 0.2
2012 Mar 13	17:12	17:41	M7.9	N17W60	13:12	16	543	1.7 ± 0.4
2012 Mar 14	15:08	15:21	M2.8	N14E05	11:08	27	558	1.8 ± 0.2
2012 Jun 03	17:48	17:55	M3.3	N16E38	13:48	43	638	1.8 ± 0.3
2012 Jun 06	19:54	20:06	M2.1	S19W05	15:54	63	824	1.2 ± 0.2
2012 Jul 08	16:23	16:32	M6.9	S17W74	12:23	39	615	1.7 ± 0.2
2012 Jul 12	15:37	16:49	X1.4	S15W01	11:37	41	624	1.6 ± 0.3
2012 Oct 20	18:05	18:14	M9.0	–	14:05	27	554	1.3 ± 0.1
2012 Oct 22	18:38	18:51	M5.0	S12E61	14:38	35	576	1.7 ± 0.2
2012 Nov 21	15:10	15:30	M3.5	N06E05	11:10	17	564	1.7 ± 0.2
2013 Apr 05	17:34	17:48	M2.2	N08E81	13:34	27	565	1.7 ± 0.2
2013 Apr 12	19:52	20:38	M3.3	N20E41	13:52	55	736	1.7 ± 0.2
2013 May 13	15:48	16:05	X2.8	N08E89	11:48	36	602	1.9 ± 0.2
2013 May 22	13:08	13:32	M5.0	N15W70	09:08	62	813	1.8 ± 0.2
2013 Aug 17	18:16	18:24	M3.3	S07W30	14:16	38	615	2.0 ± 0.3

^aGOES SXR maximum peak time. ^bFlare onset in local time. ^cSolar zenith angle at the onset time. ^dLine-of-sight air mass at the onset time. ^eNormalization factor for the NM-64. ^fThe solar neutron event reported by Sako et al. (2006) is also included as a reference for calculations.

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