Extragalactic magnetar giant flare GRB 231115A: Insights from Fermi/GBM observations

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Volume 694 (February 2025)

A&A, 694 (2025) A323

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Table C.1.

Time-resolved spectral analysis using BBs.

Time	E_p	α	Energy Flux (ℱ)	L_iso	E_iso
(ms)	(keV)		(×10⁻⁶ ergs s⁻¹ cm⁻²)	(×10⁴⁵ erg⋅ s⁻¹)	(×10⁴⁴ erg)
GRB 200415A
-4.3:-3.9	$570_{- 800}^{+ 90}$ $570^{+90}_{-800}$	$- 0 . 2_{- 0.3}^{+ 0.3}$ $-0.2 ^{+0.3}_{-0.3}$	$134_{- 6}^{+ 6}$ $134 ^{+6}_{-6}$	$196_{- 4}^{+ 5}$ $196 ^{+5}_{-4}$	$0 . 81_{- 0.02}^{+ 0.02}$ $0.81 ^{+0.02}_{-0.02}$
-3.9:-3.4	$800_{- 200}^{+ 200}$ $800^{+200}_{-200}$	$- 0 . 5_{- 0.2}^{+ 0.3}$ $-0.5 ^{+0.3}_{-0.2}$	$230_{- 20}^{+ 20}$ $230 ^{+20}_{-20}$	$341_{- 12}^{+ 20}$ $341 ^{+20}_{-12}$	$1 . 79_{- 0.01}^{+ 0.01}$ $1.79 ^{+0.01}_{-0.01}$
-3.4:-2.9	$860_{- 100}^{+ 120}$ $860^{+120}_{-100}$	$- 0 . 33_{- 0.15}^{+ 0.15}$ $-0.33 ^{+0.15}_{-0.15}$	$410_{- 20}^{+ 20}$ $410 ^{+20}_{-20}$	$600_{- 10}^{+ 20}$ $600 ^{+20}_{-10}$	$3 . 1_{- 0.1}^{+ 0.1}$ $3.1 ^{+0.1}_{-0.1}$
-2.9:-2.5	$890_{- 120}^{+ 140}$ $890^{+140}_{-120}$	$- 0 . 2_{- 0.2}^{+ 0.2}$ $-0.2 ^{+0.2}_{-0.2}$	$610_{- 30}^{+ 30}$ $610 ^{+30}_{-30}$	$890_{- 20}^{+ 30}$ $890 ^{+30}_{-20}$	$3 . 65_{- 0.07}^{+ 0.13}$ $3.65 ^{+0.13}_{-0.07}$
-2.5:-0.5	$1350_{- 130}^{+ 150}$ $1350^{+150}_{-130}$	$- 0 . 3_{- 0.1}^{+ 0.1}$ $-0.3 ^{+0.1}_{-0.1}$	$710_{- 30}^{+ 20}$ $710 ^{+20}_{-30}$	$1040_{- 20}^{+ 20}$ $1040 ^{+20}_{-20}$	$21 . 2_{- 0.4}^{+ 0.5}$ $21.2 ^{+0.5}_{-0.4}$
-0.5:3.0	$1800_{- 200}^{+ 200}$ $1800^{+200}_{-200}$	$- 0 . 08_{- 0.08}^{+ 0.08}$ $-0.08 ^{+0.08}_{-0.08}$	$610_{- 20}^{+ 20}$ $610 ^{+20}_{-20}$	$900_{- 10}^{+ 30}$ $900 ^{+30}_{-10}$	$32 . 1_{- 0.5}^{+ 0.7}$ $32.1 ^{+0.7}_{-0.5}$
3.0:5.0	$900_{- 200}^{+ 200}$ $900^{+200}_{-200}$	$0 . 1_{- 0.3}^{+ 0.3}$ $0.1 ^{+0.3}_{-0.3}$	$112_{- 7}^{+ 7}$ $112 ^{+7}_{-7}$	$160_{- 10}^{+ 10}$ $160^{+10}_{-10}$	$3 . 44_{- 0.11}^{+ 0.13}$ $3.44 ^{+0.13}_{-0.11}$
5.0:6.5	$800_{- 300}^{+ 300}$ $800^{+300}_{-300}$	$1 . 0_{- 1.1}^{+ 0.7}$ $1.0 ^{+0.7}_{-1.1}$	$17_{- 6}^{+ 5}$ $17 ^{+5}_{-6}$	$24_{- 4}^{+ 5}$ $24 ^{+5}_{-4}$	$0 . 4_{- 0.1}^{+ 0.1}$ $0.4 ^{+0.1}_{-0.1}$
6.5:22.5	$1040_{- 50}^{+ 50}$ $1040^{+50}_{-50}$	$0 . 8_{- 0.1}^{+ 0.1}$ $0.8 ^{+0.1}_{-0.1}$	$119_{- 5}^{+ 5}$ $119 ^{+5}_{-5}$	$174_{- 3}^{+ 5}$ $174 ^{+5}_{-3}$	$28 . 5_{- 0.5}^{+ 0.8}$ $28.5 ^{+0.8}_{-0.5}$
22.5:65.8	$800_{- 40}^{+ 40}$ $800^{+40}_{-40}$	$0 . 5_{- 0.1}^{+ 0.1}$ $0.5 ^{+0.1}_{-0.1}$	$50_{- 2}^{+ 2}$ $50 ^{+2}_{-2}$	$73_{- 1}^{+ 2}$ $73 ^{+2}_{-1}$	$32 . 3_{- 0.4}^{+ 0.6}$ $32.3 ^{+0.6}_{-0.4}$
65.8:93.3	$570_{- 50}^{+ 50}$ $570^{+50}_{-50}$	$0 . 3_{- 0.3}^{+ 0.3}$ $0.3 ^{+0.3}_{-0.3}$	$18 . 4_{- 1.0}^{+ 1.1}$ $18.4 ^{+1.1}_{-1.0}$	$27_{- 1}^{+ 1}$ $27 ^{+1}_{-1}$	$7 . 7_{- 0.2}^{+ 0.4}$ $7.7 ^{+0.4}_{-0.2}$
93.3:121.2	$420_{- 30}^{+ 40}$ $420^{+40}_{-30}$	$0 . 8_{- 0.5}^{+ 0.6}$ $0.8 ^{+0.6}_{-0.5}$	$9 . 2_{- 0.8}^{+ 0.8}$ $9.2 ^{+0.8}_{-0.8}$	$14_{- 1}^{+ 1}$ $14 ^{+1}_{-1}$	$4 . 0_{- 0.2}^{+ 0.3}$ $4.0 ^{+0.3}_{-0.2}$
121.2:150.2	$250_{- 20}^{+ 30}$ $250^{+30}_{-20}$	$1 . 0_{- 0.5}^{+ 0.7}$ $1.0 ^{+0.7}_{-0.5}$	$3 . 2_{- 0.8}^{+ 0.8}$ $3.2 ^{+0.8}_{-0.8}$	$5_{- 1}^{+ 1}$ $5 ^{+1}_{-1}$	$1 . 6_{- 0.1}^{+ 0.3}$ $1.6 ^{+0.3}_{-0.1}$

GRB 180128A
-12.0:-10.0	$180_{- 20}^{+ 20}$ $180^{+20}_{-20}$	$4 . 3_{- 0.9}^{+ 1.1}$ $4.3 ^{+1.1}_{-0.9}$	$7_{- 2}^{+ 2}$ $7 ^{+2}_{-2}$	$10_{- 2}^{+ 3}$ $10 ^{+3}_{-2}$	$0 . 25_{- 0.03}^{+ 0.05}$ $0.25 ^{+0.05}_{-0.03}$
-10.0:-7.0	$510_{- 100}^{+ 120}$ $510^{+120}_{-100}$	$0 . 05_{- 0.47}^{+ 0.58}$ $0.05 ^{+0.58}_{-0.47}$	$37_{- 2}^{+ 2}$ $37 ^{+2}_{-2}$	$54_{- 2}^{+ 3}$ $54 ^{+3}_{-2}$	$1 . 7_{- 0.1}^{+ 0.1}$ $1.7 ^{+0.1}_{-0.1}$
-7.0:-3.0	$400_{- 60}^{+ 40}$ $400^{+40}_{-60}$	$5_{- 3}^{+ 2}$ $5 ^{+2}_{-3}$	$7_{- 3}^{+ 2}$ $7 ^{+2}_{-3}$	$10_{- 1}^{+ 2}$ $10 ^{+2}_{-1}$	$0 . 5_{- 0.1}^{+ 0.1}$ $0.5 ^{+0.1}_{-0.1}$
-3.0:-1.0	$400_{- 100}^{+ 110}$ $400^{+110}_{-100}$	$0 . 4_{- 0.7}^{+ 1.0}$ $0.4 ^{+1.0}_{-0.7}$	$23_{- 3}^{+ 4}$ $23 ^{+4}_{-3}$	$33_{- 2}^{+ 4}$ $33 ^{+4}_{-2}$	$0 . 73_{- 0.04}^{+ 0.08}$ $0.73 ^{+0.08}_{-0.04}$
-1.0:18.0	$180_{- 11}^{+ 10}$ $180^{+10}_{-11}$	$4 . 0_{- 0.6}^{+ 0.7}$ $4.0 ^{+0.7}_{-0.6}$	$2 . 4_{- 0.3}^{+ 0.4}$ $2.4 ^{+0.4}_{-0.3}$	$3 . 6_{- 0.2}^{+ 0.4}$ $3.6 ^{+0.4}_{-0.2}$	$0 . 8_{- 0.1}^{+ 0.1}$ $0.8 ^{+0.1}_{-0.1}$
18.0:143.0	$140_{- 20}^{+ 20}$ $140^{+20}_{-20}$	$0 . 8_{- 0.3}^{+ 0.4}$ $0.8 ^{+0.4}_{-0.3}$	$0 . 5_{- 0.1}^{+ 0.1}$ $0.5 ^{+0.1}_{-0.1}$	$0 . 7_{- 0.1}^{+ 0.2}$ $0.7 ^{+0.2}_{-0.1}$	$1 . 0_{- 0.1}^{+ 0.2}$ $1.0 ^{+0.2}_{-0.1}$

Notes. The BB interval, time-resolved fluence is from fitting the spectrum with a COMPT over a combined (NaI and BGO detectors) spectral range of 8 keV–40 MeV for Fermi/GBM data. The L_iso and E_iso values were calculated over the standardized bolometric energy range of 1 keV to 10 MeV. These values are consistent with those found in Roberts et al. (2021) and Trigg et al. (2024).

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