FRB 20221107I

A burst from FRB20220912A

Repeater: FRB20220912A
Event ID: 251068910
Arrival, 400 MHz: 2022-11-07 04:05:50.756 UTC
Right ascension: 347.315°
Declination: 48.802°

How the sub-bursts differ

This burst has 2 sub-bursts. These 8 measurements differ between them and are highlighted below. Everything else is the same for every sub-burst.

Measurement	Sub-burst 1	Sub-burst 2
Arrival time, 400 MHzMJD	59890.170724253716	59890.17072634805
Arrival time, infinite frequencyMJD	59890.17065823721	59890.170660331554
Width (fitburst)s	0.003328	0.002514
Peak frequencyMHz	471.4	566.5
Lowest frequencyMHz	400.2	507.2
Highest frequencyMHz	566.2	632.6
Spectral index	22.50	131.11
Spectral running	-68.66	-188.68

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Localization

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Waterfall

Notes

The pulse emission region was extended during fluence estimation.
Flux and fluence. Flux/fluence could not be determined due to an unspecified computational failure in the fluence pipeline.

Position

ra: 347.315± 0.207degrees
dec: 48.802± 0.209degrees
gl: 106.13degrees
gb: -10.71degrees

Detection and dispersion

bonsai_snr: 12.6
snr_fitb: 33.2
bonsai_dm: 220.4pc cm⁻³
dm_fitb: 220.1543± 0.09098pc cm⁻³
dm_exc_ne2001: 94.0pc cm⁻³
dm_exc_ymw16: 96.9pc cm⁻³

Arrival time

mjd_400Differs between sub-bursts.: 59890.17072634805± 1.38 × 10⁻⁸MJD
mjd_infDiffers between sub-bursts.: 59890.170660331554± 3.06 × 10⁻⁸MJD

Burst shape

bc_width: 0.00786s
width_fitbDiffers between sub-bursts.: 0.002514± 0.0001272s
scat_time: 0.000000s

Flux and spectrum

flux: —
fluence: —
peak_freqDiffers between sub-bursts.: 566.5MHz
low_freqDiffers between sub-bursts.: 507.2MHz
high_freqDiffers between sub-bursts.: 632.6MHz
sp_idxDiffers between sub-bursts.: 131.11± 16.23
sp_runDiffers between sub-bursts.: -188.68± 23.11

Exposure and fluence thresholds

exp_up: 117.35± 64.87hour
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: 3959143.373
dof: 3960237
flag_frac: 0.259