FRB 20211005B

One-off burst

Event ID: 189824017
Arrival, 400 MHz: 2021-10-05 20:51:48.512 UTC
Right ascension: 207.149°
Declination: 56.540°

How the sub-bursts differ

This burst has 4 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	Sub-burst 4
Arrival time, 400 MHzMJD	59492.86931124556	59492.86931148072	59492.86931149623	59492.8693115508
Arrival time, infinite frequencyMJD	59492.86914376607	59492.86914400122	59492.86914401673	59492.86914407131
Width (fitburst)s	0.000423	0.000459	0.002288	0.003381
Peak frequencyMHz	400.2	639.1	442.5	584.5
Lowest frequencyMHz	400.2	462.0	400.2	400.2
Highest frequencyMHz	800.2	800.2	529.5	800.2
Spectral index	-4.29	20.49	14.32	11.65
Spectral running	1.97	-21.88	-71.33	-15.38

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Localization

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Waterfall

Position

ra: 207.149± 0.175degrees
dec: 56.540± 0.061degrees
gl: 107.67degrees
gb: 58.86degrees

Detection and dispersion

bonsai_snr: 19.0
snr_fitb: 34.5
bonsai_dm: 557.6pc cm⁻³
dm_fitb: 558.5170± 0.00921pc cm⁻³
dm_exc_ne2001: 527.1pc cm⁻³
dm_exc_ymw16: 534.9pc cm⁻³

Arrival time

mjd_400Differs between sub-bursts.: 59492.86931148072± 2.13 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.: 59492.86914400122± 3.49 × 10⁻⁹MJD

Burst shape

bc_width: 0.03342s
width_fitbDiffers between sub-bursts.: 0.000459± 0.0001116s
scat_time: 0.006525± 0.0006198s

Flux and spectrum

flux: 0.60± 0.27Jy
fluence: 6.59± 2.57Jy ms
peak_freqDiffers between sub-bursts.: 639.1MHz
low_freqDiffers between sub-bursts.: 462.0MHz
high_freqDiffers between sub-bursts.: 800.2MHz
sp_idxDiffers between sub-bursts.: 20.49± 10.07
sp_runDiffers between sub-bursts.: -21.88± 10.03

Exposure and fluence thresholds

exp_up: 146.54± 64.02hour
exp_low: 0.00± 0.00hour
low_ft_68: —
up_ft_68: 3.3Jy ms
low_ft_95: —
up_ft_95: 5.9Jy ms

Fit quality

chi_sq: 992868.484
dof: 994034
flag_frac: 0.278