FRB 20200221A
A burst from FRB20180916B
- Repeater
- FRB20180916B
- Event ID
- 73909400
- Arrival, 400 MHz
- 2020-02-21 00:09:48.708 UTC
- Right ascension
- 33.435°
- Declination
- 65.604°
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 | 58900.006813700005 | 58900.0068137539 |
| Arrival time, infinite frequencyMJD | 58900.006708921705 | 58900.006708975605 |
| Width (fitburst)s | 0.002848 | 0.002988 |
| Peak frequencyMHz | 463.5 | 414.7 |
| Lowest frequencyMHz | 426.3 | 400.2 |
| Highest frequencyMHz | 504.0 | 440.3 |
| Spectral index | 96.66 | 45.38 |
| Spectral running | -328.96 | -639.28 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 33.435± 0.011degrees
dec- 65.604± 0.015degrees
gl- 131.30degrees
gb- 4.08degrees
Detection and dispersion
bonsai_snr- 24.7
snr_fitb- 40.6
bonsai_dm- 342.9pc cm⁻³
dm_fitb- 349.4187± 0.10724pc cm⁻³
dm_exc_ne2001- 156.7pc cm⁻³
dm_exc_ymw16- 37.2pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 58900.0068137539± 3.07 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 58900.006708975605± 3.23 × 10⁻⁸MJD
Burst shape
bc_width- 0.00885s
width_fitbDiffers between sub-bursts.- 0.002988± 0.0002885s
scat_time- 0.000000s
Flux and spectrum
flux- 0.58± 0.25Jy
fluence- 4.80± 1.77Jy ms
peak_freqDiffers between sub-bursts.- 414.7MHz
low_freqDiffers between sub-bursts.- 400.2MHz
high_freqDiffers between sub-bursts.- 440.3MHz
sp_idxDiffers between sub-bursts.- 45.38± 8.02
sp_runDiffers between sub-bursts.- -639.28± 96.56
Exposure and fluence thresholds
exp_up- 219.02± 89.44hour
exp_low- 0.00± 0.00hour
low_ft_68- 0.0Jy ms
up_ft_68- 4.5Jy ms
low_ft_95- 0.0Jy ms
up_ft_95- 10.0Jy ms
Fit quality
chi_sq- 1979448.886
dof- 1981087
flag_frac- 0.254