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CHIME/FRBPublic data
Repeater
FRB20220912A
Event ID
254867849
Arrival, 400 MHz
2022-12-10 01:53:19.190 UTC
Right ascension
347.224°
Declination
48.808°

How the sub-bursts differ

This burst has 6 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 6
Arrival time, 400 MHzMJD59923.0786938927659923.0786939862659923.07869406722659923.07869414711659923.078694238659923.07869432853
Arrival time, infinite frequencyMJD59923.0786279023559923.0786279958559923.07862807681559923.07862815670559923.0786282481959923.07862833812
Width (fitburst)s0.0043640.0048400.0033480.0037520.0022950.002197
Peak frequencyMHz629.2595.4567.9543.2503.6454.3
Lowest frequencyMHz576.9537.0520.6495.7433.0404.3
Highest frequencyMHz686.3660.1619.4595.1585.6510.5
Spectral index276.25171.82213.61168.1946.4842.92
Spectral running-305.21-216.24-305.19-275.35-101.15-169.30

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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
347.224± 0.178degrees
dec
48.808± 0.176degrees
gl
106.08degrees
gb
-10.68degrees

Detection and dispersion

bonsai_snr
22.5
snr_fitb
48.2
bonsai_dm
222.4pc cm⁻³
dm_fitb
220.0673± 0.11363pc cm⁻³
dm_exc_ne2001
93.6pc cm⁻³
dm_exc_ymw16
96.5pc cm⁻³

Arrival time

mjd_400Differs between sub-bursts.
59923.07869432853± 8.29 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.
59923.07862833812± 3.51 × 10⁻⁸MJD

Burst shape

bc_width
0.04424s
width_fitbDiffers between sub-bursts.
0.002197± 0.0002712s
scat_time
0.000000s

Flux and spectrum

flux
—
fluence
—
peak_freqDiffers between sub-bursts.
454.3MHz
low_freqDiffers between sub-bursts.
404.3MHz
high_freqDiffers between sub-bursts.
510.5MHz
sp_idxDiffers between sub-bursts.
42.92± 9.92
sp_runDiffers between sub-bursts.
-169.30± 41.37

Exposure and fluence thresholds

exp_up
130.98± 57.10hour
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
1924665.757
dof
1926959
flag_frac
0.274