FRB 20230826B

A burst from FRB20220912A

Repeater: FRB20220912A
Event ID: 312912787
Arrival, 400 MHz: 2023-08-26 08:51:45.711 UTC
Right ascension: 347.403°
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	60182.36927906575	60182.36927941197
Arrival time, infinite frequencyMJD	60182.369211227204	60182.36921157342
Width (fitburst)s	0.006311	0.010501
Peak frequencyMHz	639.1	520.4
Lowest frequencyMHz	586.4	415.3
Highest frequencyMHz	696.5	652.1
Spectral index	291.46	23.77
Spectral running	-311.33	-45.25

Loading

Localization

Loading

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: 347.403± 0.199degrees
dec: 48.802± 0.198degrees
gl: 106.18degrees
gb: -10.73degrees

Detection and dispersion

bonsai_snr: 14.9
snr_fitb: 28.1
bonsai_dm: 231.3pc cm⁻³
dm_fitb: 226.2306± 0.32124pc cm⁻³
dm_exc_ne2001: 100.3pc cm⁻³
dm_exc_ymw16: 103.1pc cm⁻³

Arrival time

mjd_400Differs between sub-bursts.: 60182.36927906575± 5.96 × 10⁻⁸MJD
mjd_infDiffers between sub-bursts.: 60182.369211227204± 1.13 × 10⁻⁷MJD

Burst shape

bc_width: 0.04915s
width_fitbDiffers between sub-bursts.: 0.006311± 0.0005287s
scat_time: 0.000000s

Flux and spectrum

flux: —
fluence: —
peak_freqDiffers between sub-bursts.: 639.1MHz
low_freqDiffers between sub-bursts.: 586.4MHz
high_freqDiffers between sub-bursts.: 696.5MHz
sp_idxDiffers between sub-bursts.: 291.46± 44.36
sp_runDiffers between sub-bursts.: -311.33± 47.25

Exposure and fluence thresholds

exp_up: 117.48± 65.04hour
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: 1109990.137
dof: 1110769
flag_frac: 0.335