FRB 20210331B
A burst from FRB20201124A
- Repeater
- FRB20201124A
- Event ID
- 166462622
- Arrival, 400 MHz
- 2021-03-31 00:37:18.700 UTC
- Right ascension
- 77.079°
- Declination
- 26.183°
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 | 59304.02591088124 | 59304.02591098224 |
| Arrival time, infinite frequencyMJD | 59304.02578619457 | 59304.02578629557 |
| Width (fitburst)s | 0.006648 | 0.007202 |
| Peak frequencyMHz | 729.8 | 586.8 |
| Lowest frequencyMHz | 634.8 | 506.6 |
| Highest frequencyMHz | 800.2 | 679.7 |
| Spectral index | 142.17 | 81.67 |
| Spectral running | -118.30 | -106.69 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 77.079± 0.164degrees
dec- 26.183± 0.182degrees
gl- 177.70degrees
gb- -8.40degrees
Detection and dispersion
bonsai_snr- 21.4
snr_fitb- 31.0
bonsai_dm- 418.9pc cm⁻³
dm_fitb- 415.8099± 0.34254pc cm⁻³
dm_exc_ne2001- 274.8pc cm⁻³
dm_exc_ymw16- 217.7pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59304.02591088124± 7.11 × 10⁻⁸MJD
mjd_infDiffers between sub-bursts.- 59304.02578619457± 1.25 × 10⁻⁷MJD
Burst shape
bc_width- 0.02261s
width_fitbDiffers between sub-bursts.- 0.006648± 0.0004684s
scat_time- 0.000000s
Flux and spectrum
flux- 0.58± 0.22Jy
fluence- 10.15± 2.54Jy ms
peak_freqDiffers between sub-bursts.- 729.8MHz
low_freqDiffers between sub-bursts.- 634.8MHz
high_freqDiffers between sub-bursts.- 800.2MHz
sp_idxDiffers between sub-bursts.- 142.17± 20.33
sp_runDiffers between sub-bursts.- -118.30± 16.84
Exposure and fluence thresholds
exp_up- 98.85± 40.62hour
exp_low- 0.00± 0.00hour
low_ft_68- 0.0Jy ms
up_ft_68- 6.1Jy ms
low_ft_95- 0.0Jy ms
up_ft_95- 14.4Jy ms
Fit quality
chi_sq- 2033758.383
dof- 2034709
flag_frac- 0.233