FRB 20220621D
One-off burst
- Event ID
- 231744341
- Arrival, 400 MHz
- 2022-06-21 21:31:44.866 UTC
- Right ascension
- 111.043°
- Declination
- 74.589°
How the sub-bursts differ
This burst has 2 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 |
|---|---|---|
| Arrival time, 400 MHzMJD | 59751.897046862934 | 59751.897047056336 |
| Arrival time, infinite frequencyMJD | 59751.89683665639 | 59751.89683684979 |
| Width (fitburst)s | 0.004673 | 0.005283 |
| Peak frequencyMHz | 497.3 | 440.8 |
| Lowest frequencyMHz | 442.9 | 400.2 |
| Highest frequencyMHz | 558.4 | 494.1 |
| Spectral index | 74.47 | 34.19 |
| Spectral running | -171.43 | -176.88 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 111.043± 0.202degrees
dec- 74.589± 0.222degrees
gl- 140.30degrees
gb- 28.25degrees
Detection and dispersion
bonsai_snr- 16.7
snr_fitb- 25.5
bonsai_dm- 700.4pc cm⁻³
dm_fitb- 701.0048± 0.17213pc cm⁻³
dm_exc_ne2001- 645.8pc cm⁻³
dm_exc_ymw16- 648.3pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59751.897047056336± 1.01 × 10⁻⁸MJD
mjd_infDiffers between sub-bursts.- 59751.89683684979± 5.26 × 10⁻⁸MJD
Burst shape
bc_width- 0.02851s
width_fitbDiffers between sub-bursts.- 0.005283± 0.0003990s
scat_time- 0.000000s
Flux and spectrum
flux- 0.52± 0.33Jy
fluence- 8.53± 3.03Jy ms
peak_freqDiffers between sub-bursts.- 440.8MHz
low_freqDiffers between sub-bursts.- 400.2MHz
high_freqDiffers between sub-bursts.- 494.1MHz
sp_idxDiffers between sub-bursts.- 34.19± 5.06
sp_runDiffers between sub-bursts.- -176.88± 25.01
Exposure and fluence thresholds
exp_up- 286.72± 157.27hour
exp_low- 228.04± 122.61hour
low_ft_68- 31.9Jy ms
up_ft_68- 4.5Jy ms
low_ft_95- 54.5Jy ms
up_ft_95- 8.3Jy ms
Fit quality
chi_sq- 1665842.432
dof- 1666483
flag_frac- 0.372