FRB 20210220B
One-off burst
- Event ID
- 160572244
- Arrival, 400 MHz
- 2021-02-20 13:57:58.684 UTC
- Right ascension
- 240.430°
- Declination
- 42.772°
How the sub-bursts differ
This burst has 3 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 | Sub-burst 3 |
|---|---|---|---|
| Arrival time, 400 MHzMJD | 59265.58192911832 | 59265.58192921342 | 59265.58192936348 |
| Arrival time, infinite frequencyMJD | 59265.58159779455 | 59265.58159788965 | 59265.5815980397 |
| Width (fitburst)s | 0.000491 | 0.000413 | 0.000703 |
| Peak frequencyMHz | 445.9 | 435.5 | 416.2 |
| Highest frequencyMHz | 498.5 | 483.6 | 476.7 |
| Spectral index | 39.99 | 35.52 | 9.80 |
| Spectral running | -184.88 | -209.91 | -124.89 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 240.430± 0.215degrees
dec- 42.772± 0.223degrees
gl- 67.87degrees
gb- 48.63degrees
Detection and dispersion
bonsai_snr- 12.0
snr_fitb- 24.9
bonsai_dm- 1104.8pc cm⁻³
dm_fitb- 1104.9112± 0.02891pc cm⁻³
dm_exc_ne2001- 1073.2pc cm⁻³
dm_exc_ymw16- 1078.2pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59265.58192921342± 1.55 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 59265.58159788965± 8.81 × 10⁻⁹MJD
Burst shape
bc_width- 0.02851s
width_fitbDiffers between sub-bursts.- 0.000413± 0.0000976s
scat_time- 0.002823± 0.0002861s
Flux and spectrum
flux- 0.08± 0.06Jy
fluence- 0.67± 0.12Jy ms
peak_freqDiffers between sub-bursts.- 435.5MHz
low_freq- 400.2MHz
high_freqDiffers between sub-bursts.- 483.6MHz
sp_idxDiffers between sub-bursts.- 35.52± 7.37
sp_runDiffers between sub-bursts.- -209.91± 41.21
Exposure and fluence thresholds
exp_up- 97.98± 57.17hour
exp_low- 0.00± 0.00hour
low_ft_68- —
up_ft_68- 0.4Jy ms
low_ft_95- —
up_ft_95- 0.7Jy ms
Fit quality
chi_sq- 2155598.335
dof- 2156203
flag_frac- 0.188