Solar energetic electron events with a spectral bump break

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Volume 699 (July 2025)

A&A, 699 (2025) A2

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Table A.3.

Comparison with general power-law SEE events

		SEE					Flare				West-Limb CME			Type II

		β(β₁)	β₂	E_bp(E_B)	$J_{pk}^{2.8 keV}$ $J_{{\textrm {pk}}}^{{\textrm {2.8keV}}}$ /10⁴	$J_{pk}^{108 keV}$ $J_{{\textrm {pk}}}^{{\textrm {108keV}}}$	Ratio	Class	Duration	HXR	Ratio	V	Width	IP	Ground
				(keV)	(cm s sr keV)⁻¹	(cm s sr keV)⁻¹			(min)			(km/s)	(deg)
bump^a
	Event 10	3.6±0.5	1.7±0.2	56±6	2.5	64.6	Yes	M3.0	59	Yes	Yes	969	360	Yes	Yes
	Other 9 events	$2 . 5_{- 0.3}^{+ 0.3}$ $2.5_{-0.3}^{+0.3}$	...	$61_{- 5}^{+ 16}$ $61_{-5}^{+16}$	0.25−12.6	0.6−128	79% (7/9)	C $5 . 3_{- 2.5}^{+ 20.8}$ $5.3_{-2.5}^{+20.8}$	$18_{- 10.5}^{+ 24.5}$ $18_{-10.5}^{+24.5}$	57% (4/7)	88% (7/8)	$918_{- 275}^{+ 69}$ $918_{-275}^{+69}$	$61_{- 34}^{+ 46}$ $61_{-34}^{+46}$	11%(1/9)	44%(4/9)

	All 10 events	$2 . 6_{- 0.2}^{+ 0.7}$ $2.6_{-0.2}^{+0.7}$	...	$59_{- 3}^{+ 18}$ $59_{-3}^{+18}$	0.25−12.6	0.6−128	80% (8/10)	C $6 . 0_{- 3.4}^{+ 27}$ $6.0_{-3.4}^{+27}$	$21_{- 10.5}^{+ 21}$ $21_{-10.5}^{+21}$	63% (5/8)	89% (8/9)	$941_{- 298}^{+ 49}$ $941_{-298}^{+49}$	$61_{- 34}^{+ 46}$ $61_{-34}^{+46}$	20%(2/10)	50%(5/10)

Wang et al. (2024)
	SPL	$2 . 8_{- 0.2}^{+ 0.5}$ $2.8_{-0.2}^{+0.5}$	...	...	0.12−6.2	0.017−7.2	70%	C $1 . 0_{- 0.9}^{+ 8.7}$ $1.0_{-0.9}^{+8.7}$	$19_{- 10}^{+ 19}$ $19_{-10}^{+19}$	38%	76%	$720_{- 170}^{+ 290}$ $720_{-170}^{+290}$	$56_{- 11}^{+ 102}$ $56_{-11}^{+102}$	13%	N/A^b
	UDPL	$3 . 0_{- 0.3}^{+ 0.3}$ $3.0_{-0.3}^{+0.3}$	$2 . 2_{- 0.3}^{+ 0.2}$ $2.2_{-0.3}^{+0.2}$	$5 . 1_{- 1.8}^{+ 4.2}$ $5.1_{-1.8}^{+4.2}$	0.096−8.9	0.012−65	74%	M $1 . 7_{- 1.6}^{+ 3.4}$ $1.7_{-1.6}^{+3.4}$	$30_{- 16}^{+ 11}$ $30_{-16}^{+11}$	64%	90%	$1000_{- 120}^{+ 550}$ $1000_{-120}^{+550}$	$71_{- 53}^{+ 83}$ $71_{-53}^{+83}$	47%	N/A^b
	DDPL $_{E_{B} < 20 keV}$ ${}_{E_{B} < 20keV}$	$2 . 0_{- 0.2}^{+ 0.2}$ $2.0_{-0.2}^{+0.2}$	$3 . 3_{- 0.3}^{+ 0.5}$ $3.3_{-0.3}^{+0.5}$	$5 . 6_{- 2.4}^{+ 2.3}$ $5.6_{-2.4}^{+2.3}$	0.12−22	0.019−230	79%	C $1 . 5_{- 1.3}^{+ 3.0}$ $1.5_{-1.3}^{+3.0}$	$24_{- 13}^{36}$ $24_{-13}^{36}$	55%	85%	$540_{- 150}^{+ 290}$ $540_{-150}^{+290}$	$52_{- 38}^{+ 67}$ $52_{-38}^{+67}$	8%	N/A^b
	DDPL $_{E_{B} \geq 20 keV}$ ${}_{E_{B}\geq 20keV}$	$2 . 1_{- 0.3}^{+ 0.3}$ $2.1_{-0.3}^{+0.3}$	$3 . 9_{- 0.7}^{+ 0.6}$ $3.9_{-0.7}^{+0.6}$	$61_{- 12}^{+ 23}$ $61_{-12}^{+23}$	0.029−38	0.011−150	80%	C $2 . 0_{- 1.7}^{+ 11}$ $2.0_{-1.7}^{+11}$	$14_{- 6.7}^{+ 17}$ $14_{-6.7}^{+17}$	76%	91%	$610_{- 240}^{+ 350}$ $610_{-240}^{+350}$	$70_{- 30}^{+ 49}$ $70_{-30}^{+49}$	20%	N/A^b

Notes.

^(a)

The spectral parameters (β,E_bp) are obtained from MUL fitting results.

^(b)

Not provided by Wang et al. (2024).

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