FRB 20210504E
One-off burst
- Event ID
- 170102452
- Arrival, 400 MHz
- 2021-05-04 05:13:04.479 UTC
- Right ascension
- 180.646°
- Declination
- 59.572°
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 | 59338.21741291175 | 59338.21741294665 |
| Arrival time, infinite frequencyMJD | 59338.217196291414 | 59338.21719632632 |
| Width (fitburst)s | 0.000904 | 0.004696 |
| Peak frequencyMHz | 654.1 | 400.2 |
| Lowest frequencyMHz | 462.9 | 400.2 |
| Spectral index | 18.93 | -0.45 |
| Spectral running | -19.27 | -3.25 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 180.646± 0.165degrees
dec- 59.572± 0.163degrees
gl- 134.12degrees
gb- 56.48degrees
Detection and dispersion
bonsai_snr- 30.6
snr_fitb- 41.2
bonsai_dm- 721.8pc cm⁻³
dm_fitb- 722.3938± 0.02255pc cm⁻³
dm_exc_ne2001- 689.7pc cm⁻³
dm_exc_ymw16- 698.6pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59338.21741294665± 5.83 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 59338.21719632632± 8.93 × 10⁻⁹MJD
Burst shape
bc_width- 0.00393s
width_fitbDiffers between sub-bursts.- 0.004696± 0.0003879s
scat_time- 0.000000s
Flux and spectrum
flux- 1.49± 0.32Jy
fluence- 8.02± 1.12Jy ms
peak_freqDiffers between sub-bursts.- 400.2MHz
low_freqDiffers between sub-bursts.- 400.2MHz
high_freq- 800.2MHz
sp_idxDiffers between sub-bursts.- -0.45± 1.06
sp_runDiffers between sub-bursts.- -3.25± 1.92
Exposure and fluence thresholds
exp_up- 173.56± 62.01hour
exp_low- 0.00± 0.00hour
low_ft_68- —
up_ft_68- 2.8Jy ms
low_ft_95- —
up_ft_95- 4.5Jy ms
Fit quality
chi_sq- 2052302.458
dof- 2053987
flag_frac- 0.226