FRB 20210523C
One-off burst
- Event ID
- 171808929
- Arrival, 400 MHz
- 2021-05-23 07:47:33.142 UTC
- Right ascension
- 238.369°
- Declination
- 74.184°
How the sub-bursts differ
This burst has 7 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 | Sub-burst 5 | Sub-burst 6 | Sub-burst 7 |
|---|---|---|---|---|---|---|---|
| Arrival time, 400 MHzMJD | 59357.32468914597 | 59357.324689228226 | 59357.32468930792 | 59357.32468939809 | 59357.32468954386 | 59357.32468960947 | 59357.3246897076 |
| Arrival time, infinite frequencyMJD | 59357.32452961959 | 59357.324529701844 | 59357.32452978153 | 59357.32452987171 | 59357.32453001747 | 59357.32453008308 | 59357.32453018121 |
| Width (fitburst)s | 0.002022 | 0.002319 | 0.001095 | 0.003406 | 0.001095 | 0.000996 | 0.002747 |
| Peak frequencyMHz | 540.7 | 538.6 | 527.2 | 509.2 | 482.9 | 471.8 | 443.9 |
| Lowest frequencyMHz | 486.7 | 482.6 | 474.2 | 455.1 | 435.5 | 431.0 | 400.2 |
| Highest frequencyMHz | 600.6 | 601.1 | 586.0 | 569.7 | 535.4 | 516.5 | 494.1 |
| Spectral index | 125.34 | 113.46 | 113.08 | 87.91 | 81.00 | 92.52 | 41.45 |
| Spectral running | -208.32 | -191.01 | -205.21 | -182.49 | -215.67 | -281.09 | -200.10 |
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Notes
- The pulse emission region was extended during fluence estimation.
- Flux and fluence. Flux/fluence could not be determined due to an unspecified computational failure in the fluence pipeline.
- Fitburst. Fitburst was run with an older version that used the upper edge of the frequency channel and the start of the time integration rather than the channel and integration centers used in the current version.
Position
ra- 238.369± 0.179degrees
dec- 74.184± 0.196degrees
gl- 108.75degrees
gb- 37.50degrees
Detection and dispersion
bonsai_snr- 25.4
snr_fitb- 61.9
bonsai_dm- 536.2pc cm⁻³
dm_fitb- 531.9947± 0.05699pc cm⁻³
dm_exc_ne2001- 490.7pc cm⁻³
dm_exc_ymw16- 497.1pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59357.32468914597± 8.87 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 59357.32452961959± 1.93 × 10⁻⁸MJD
Burst shape
bc_width- 0.05898s
width_fitbDiffers between sub-bursts.- 0.002022± 0.0003019s
scat_time- 0.005294± 0.0008178s
Flux and spectrum
flux- —
fluence- —
peak_freqDiffers between sub-bursts.- 540.7MHz
low_freqDiffers between sub-bursts.- 486.7MHz
high_freqDiffers between sub-bursts.- 600.6MHz
sp_idxDiffers between sub-bursts.- 125.34± 19.11
sp_runDiffers between sub-bursts.- -208.32± 31.42
Exposure and fluence thresholds
exp_up- 288.98± 135.94hour
exp_low- 158.22± 123.11hour
low_ft_68- —
up_ft_68- —
low_ft_95- —
up_ft_95- —
Fit quality
chi_sq- 1864495.250
dof- 1867985
flag_frac- 0.296