FRB 20221224C

A burst from FRB20220912A

Repeater: FRB20220912A
Event ID: 257076328
Arrival, 400 MHz: 2022-12-24 01:00:52.751 UTC
Right ascension: 347.277°
Declination: 48.805°

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.

Measurement	Sub-burst 1	Sub-burst 2	Sub-burst 3
Arrival time, 400 MHzMJD	59937.04227700828	59937.04227710774	59937.042277212255
Arrival time, infinite frequencyMJD	59937.04221085128	59937.042210950734	59937.042211055246
Width (fitburst)s	0.004120	0.005674	0.003815
Peak frequencyMHz	518.2	472.2	445.3
Lowest frequencyMHz	474.9	427.9	400.2
Highest frequencyMHz	565.4	521.1	499.0
Spectral index	156.65	78.34	37.92
Spectral running	-303.15	-236.78	-177.48

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Localization

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Waterfall

Notes

The pulse emission region was extended during fluence estimation.

Position

ra: 347.277± 0.185degrees
dec: 48.805± 0.186degrees
gl: 106.11degrees
gb: -10.69degrees

Detection and dispersion

bonsai_snr: 21.7
snr_fitb: 36.8
bonsai_dm: 222.4pc cm⁻³
dm_fitb: 220.6229± 0.20058pc cm⁻³
dm_exc_ne2001: 94.3pc cm⁻³
dm_exc_ymw16: 97.2pc cm⁻³

Arrival time

mjd_400Differs between sub-bursts.: 59937.042277212255± 1.17 × 10⁻⁸MJD
mjd_infDiffers between sub-bursts.: 59937.042211055246± 6.13 × 10⁻⁸MJD

Burst shape

bc_width: 0.02654s
width_fitbDiffers between sub-bursts.: 0.003815± 0.0004597s
scat_time: 0.000000s

Flux and spectrum

flux: 0.74± 0.42Jy
fluence: 9.96± 4.35Jy ms
peak_freqDiffers between sub-bursts.: 445.3MHz
low_freqDiffers between sub-bursts.: 400.2MHz
high_freqDiffers between sub-bursts.: 499.0MHz
sp_idxDiffers between sub-bursts.: 37.92± 6.72
sp_runDiffers between sub-bursts.: -177.48± 35.73

Exposure and fluence thresholds

exp_up: 124.69± 60.70hour
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: 1914296.298
dof: 1915634
flag_frac: 0.278