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CHIME/FRBPublic data

FRB 20211218D

One-off burst

Event ID
203492513
Arrival, 400 MHz
2021-12-18 21:28:48.942 UTC
Right ascension
289.588°
Declination
42.279°

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Localization

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Waterfall

Notes

  • This low S/N event was first identified by citizen scientists on the Zooniverse platform.
  • The pulse emission region was extended during fluence estimation.

Position

ra
289.588± 0.235degrees
dec
42.279± 0.254degrees
gl
73.91degrees
gb
13.27degrees

Detection and dispersion

bonsai_snr
8.2
snr_fitb
10.7
bonsai_dm
242.2pc cm⁻³
dm_fitb
242.5211± 0.05244pc cm⁻³
dm_exc_ne2001
140.0pc cm⁻³
dm_exc_ymw16
144.2pc cm⁻³

Arrival time

mjd_400
59566.89501090572± 4.52 × 10⁻⁹MJD
mjd_inf
59566.89493818223± 1.64 × 10⁻⁸MJD

Burst shape

bc_width
0.00885s
width_fitb
0.000883± 0.0000985s
scat_time
0.000000s

Flux and spectrum

flux
0.31± 0.11Jy
fluence
1.55± 0.38Jy ms
peak_freq
464.7MHz
low_freq
400.2MHz
high_freq
565.3MHz
sp_idx
17.94± 6.38
sp_run
-60.01± 19.16

Exposure and fluence thresholds

exp_up
98.47± 61.13hour
exp_low
0.00± 0.00hour
low_ft_68
—
up_ft_68
1.4Jy ms
low_ft_95
—
up_ft_95
2.3Jy ms

Fit quality

chi_sq
2054694.229
dof
2054802
flag_frac
0.226