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CHIME/FRBPublic data
Repeater
FRB20220912A
Event ID
249897405
Arrival, 400 MHz
2022-10-30 04:34:56.654 UTC
Right ascension
347.321°
Declination
48.669°

How the sub-bursts differ

This burst has 3 sub-bursts. These 8 measurements differ between them and are highlighted below. Everything else is the same for every sub-burst.

MeasurementSub-burst 1Sub-burst 2Sub-burst 3
Arrival time, 400 MHzMJD59882.1909332897159882.19093316828459882.19093349045
Arrival time, infinite frequencyMJD59882.19086748134659882.1908673599259882.19086768208
Width (fitburst)s0.0152220.0007670.002764
Peak frequencyMHz434.1425.7422.9
Lowest frequencyMHz418.1400.2400.2
Highest frequencyMHz450.8481.7468.6
Spectral index264.0118.6324.05
Spectral running-1621.56-150.73-218.03

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Localization

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Waterfall

Notes

  • The pulse emission region was extended during fluence estimation.

Position

ra
347.321± 0.170degrees
dec
48.669± 0.043degrees
gl
106.08degrees
gb
-10.83degrees

Detection and dispersion

bonsai_snr
27.8
snr_fitb
55.6
bonsai_dm
218.8pc cm⁻³
dm_fitb
219.4603± 0.01431pc cm⁻³
dm_exc_ne2001
94.5pc cm⁻³
dm_exc_ymw16
97.6pc cm⁻³

Arrival time

mjd_400Differs between sub-bursts.
59882.19093349045± 1.94 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.
59882.19086768208± 4.71 × 10⁻⁹MJD

Burst shape

bc_width
0.00197s
width_fitbDiffers between sub-bursts.
0.002764± 0.0001649s
scat_time
0.000000s

Flux and spectrum

flux
1.29± 0.52Jy
fluence
7.10± 2.53Jy ms
peak_freqDiffers between sub-bursts.
422.9MHz
low_freqDiffers between sub-bursts.
400.2MHz
high_freqDiffers between sub-bursts.
468.6MHz
sp_idxDiffers between sub-bursts.
24.05± 4.80
sp_runDiffers between sub-bursts.
-218.03± 33.94

Exposure and fluence thresholds

exp_up
89.41± 67.58hour
exp_low
0.00± 0.00hour
low_ft_68
0.0Jy ms
up_ft_68
2.6Jy ms
low_ft_95
0.0Jy ms
up_ft_95
7.1Jy ms

Fit quality

chi_sq
1956138.099
dof
1959212
flag_frac
0.262