FRB 20210222B
One-off burst
- Event ID
- 161285907
- Arrival, 400 MHz
- 2021-02-22 11:28:06.950 UTC
- Right ascension
- 202.901°
- Declination
- -1.076°
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 | 59267.47785816783 | 59267.47785822207 | 59267.47785823963 |
| Arrival time, infinite frequencyMJD | 59267.477753101506 | 59267.47775315574 | 59267.477753173305 |
| Width (fitburst)s | 0.001514 | 0.005004 | 0.005091 |
| Peak frequencyMHz | 529.9 | 581.3 | 517.2 |
| Lowest frequencyMHz | 471.0 | 561.9 | 445.7 |
| Highest frequencyMHz | 596.2 | 601.3 | 600.3 |
| Spectral index | 93.05 | 1490.87 | 53.33 |
| Spectral running | -165.73 | -1997.04 | -103.93 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 202.901± 0.207degrees
dec- -1.076± 0.296degrees
gl- 323.46degrees
gb- 60.19degrees
Detection and dispersion
bonsai_snr- 18.1
snr_fitb- 55.9
bonsai_dm- 350.2pc cm⁻³
dm_fitb- 350.3792± 0.07279pc cm⁻³
dm_exc_ne2001- 321.6pc cm⁻³
dm_exc_ymw16- 326.9pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59267.47785822207± 2.05 × 10⁻⁸MJD
mjd_infDiffers between sub-bursts.- 59267.47775315574± 2.99 × 10⁻⁸MJD
Burst shape
bc_width- 0.01573s
width_fitbDiffers between sub-bursts.- 0.005004± 0.0022780s
scat_time- 0.000000s
Flux and spectrum
flux- 1.73± 0.65Jy
fluence- 17.55± 4.80Jy ms
peak_freqDiffers between sub-bursts.- 581.3MHz
low_freqDiffers between sub-bursts.- 561.9MHz
high_freqDiffers between sub-bursts.- 601.3MHz
sp_idxDiffers between sub-bursts.- 1490.87± 725.63
sp_runDiffers between sub-bursts.- -1997.04± 973.04
Exposure and fluence thresholds
exp_up- 79.66± 36.89hour
exp_low- 0.00± 0.00hour
low_ft_68- —
up_ft_68- 7.1Jy ms
low_ft_95- —
up_ft_95- 11.9Jy ms
Fit quality
chi_sq- 1903937.414
dof- 1907048
flag_frac- 0.281