FRB 20210109B
One-off burst
- Event ID
- 151485989
- Arrival, 400 MHz
- 2021-01-09 15:25:43.885 UTC
- Right ascension
- 221.403°
- Declination
- 8.388°
How the sub-bursts differ
This burst has 2 sub-bursts. These 7 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 | 59223.64286903399 | 59223.642869091156 |
| Arrival time, infinite frequencyMJD | 59223.64272202299 | 59223.642722080156 |
| Width (fitburst)s | 0.000893 | 0.000768 |
| Peak frequencyMHz | 557.6 | 535.6 |
| Highest frequencyMHz | 800.2 | 791.0 |
| Spectral index | 3.45 | 8.83 |
| Spectral running | -5.20 | -15.14 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 221.403± 0.239degrees
dec- 8.388± 0.310degrees
gl- 3.52degrees
gb- 57.14degrees
Detection and dispersion
bonsai_snr- 9.5
snr_fitb- 12.4
bonsai_dm- 489.7pc cm⁻³
dm_fitb- 490.2579± 0.02497pc cm⁻³
dm_exc_ne2001- 464.5pc cm⁻³
dm_exc_ymw16- 465.7pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59223.64286903399± 4.01 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 59223.64272202299± 8.49 × 10⁻⁹MJD
Burst shape
bc_width- 0.00786s
width_fitbDiffers between sub-bursts.- 0.000893± 0.0001074s
scat_time- 0.000000s
Flux and spectrum
flux- 0.96± 0.65Jy
fluence- 6.69± 3.54Jy ms
peak_freqDiffers between sub-bursts.- 557.6MHz
low_freq- 400.2MHz
high_freqDiffers between sub-bursts.- 800.2MHz
sp_idxDiffers between sub-bursts.- 3.45± 2.87
sp_runDiffers between sub-bursts.- -5.20± 4.10
Exposure and fluence thresholds
exp_up- 67.17± 43.50hour
exp_low- 0.00± 0.00hour
low_ft_68- —
up_ft_68- 5.1Jy ms
low_ft_95- —
up_ft_95- 9.8Jy ms
Fit quality
chi_sq- 1973168.187
dof- 1973311
flag_frac- 0.257