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CHIME/FRBPublic data
Repeater
FRB20220912A
Event ID
252450889
Arrival, 400 MHz
2022-11-16 03:35:17.692 UTC
Right ascension
349.436°
Declination
48.797°

How the sub-bursts differ

This burst has 7 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 3Sub-burst 4Sub-burst 5Sub-burst 6Sub-burst 7
Arrival time, 400 MHzMJD59899.14951019062659899.1495103274359899.14951068594459899.1495107430859899.149510810359899.1495108825859899.14951094867
Arrival time, infinite frequencyMJD59899.14944435775459899.1494444945659899.1494448530759899.1494449102159899.14944497742559899.14944504970559899.1494451158
Width (fitburst)s0.0022730.0025170.0051680.0009830.0014240.0019830.001037
Peak frequencyMHz702.7657.7620.2593.7607.7580.7553.0
Lowest frequencyMHz613.8562.5542.5514.8539.3515.5493.3
Highest frequencyMHz800.2769.0708.9684.7684.8654.2619.9
Spectral index141.4293.52112.7389.23134.84120.84114.09
Spectral running-125.59-94.13-128.69-113.12-161.39-162.28-176.43

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Localization

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Waterfall

Position

ra
349.436± 0.024degrees
dec
48.797± 0.165degrees
gl
107.45degrees
gb
-11.24degrees

Detection and dispersion

bonsai_snr
29.4
snr_fitb
306.4
bonsai_dm
223.2pc cm⁻³
dm_fitb
219.5420± 0.01848pc cm⁻³
dm_exc_ne2001
98.5pc cm⁻³
dm_exc_ymw16
101.2pc cm⁻³

Arrival time

mjd_400Differs between sub-bursts.
59899.14951032743± 3.68 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.
59899.14944449456± 6.65 × 10⁻⁹MJD

Burst shape

bc_width
0.07274s
width_fitbDiffers between sub-bursts.
0.002517± 0.0000445s
scat_time
0.012268± 0.0005064s

Flux and spectrum

flux
4.69± 2.35Jy
fluence
123.84± 60.59Jy ms
peak_freqDiffers between sub-bursts.
657.7MHz
low_freqDiffers between sub-bursts.
562.5MHz
high_freqDiffers between sub-bursts.
769.0MHz
sp_idxDiffers between sub-bursts.
93.52± 1.80
sp_runDiffers between sub-bursts.
-94.13± 1.81

Exposure and fluence thresholds

exp_up
122.44± 64.11hour
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
3694247.649
dof
3788083
flag_frac
0.291