FRB 20200820A
A burst from FRB20200420A
- Repeater
- FRB20200420A
- Event ID
- 118315775
- Arrival, 400 MHz
- 2020-08-20 10:36:00.899 UTC
- Right ascension
- 7.588°
- Declination
- 37.248°
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 | 59081.4416770684 | 59081.441677141236 |
| Arrival time, infinite frequencyMJD | 59081.44147605454 | 59081.44147612738 |
| Width (fitburst)s | 0.000506 | 0.000550 |
| Peak frequencyMHz | 710.5 | 697.7 |
| Lowest frequencyMHz | 613.5 | 587.0 |
| Spectral index | 122.73 | 85.69 |
| Spectral running | -106.90 | -77.09 |
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Notes
- This event should be excluded from parameter inference due to non-nominal telescope operation.
- The pulse emission region was extended during fluence estimation.
- Exposure. Event occurred during a system upgrade (hardware or software) and should be excluded from population studies.
Position
ra- 7.588± 0.012degrees
dec- 37.248± 0.020degrees
gl- 118.29degrees
gb- -25.43degrees
Detection and dispersion
bonsai_snr- 53.3
snr_fitb- 220.0
bonsai_dm- 671.3pc cm⁻³
dm_fitb- 670.3487± 0.00344pc cm⁻³
dm_exc_ne2001- 612.4pc cm⁻³
dm_exc_ymw16- 620.5pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59081.4416770684± 7.01 × 10⁻¹⁰MJD
mjd_infDiffers between sub-bursts.- 59081.44147605454± 1.25 × 10⁻⁹MJD
Burst shape
bc_width- 0.00197s
width_fitbDiffers between sub-bursts.- 0.000506± 0.0000028s
scat_time- 0.000000s
Flux and spectrum
flux- 7.05± 3.17Jy
fluence- 22.38± 9.72Jy ms
peak_freqDiffers between sub-bursts.- 710.5MHz
low_freqDiffers between sub-bursts.- 613.5MHz
high_freq- 800.2MHz
sp_idxDiffers between sub-bursts.- 122.73± 1.73
sp_runDiffers between sub-bursts.- -106.90± 1.50
Exposure and fluence thresholds
exp_up- 78.00± 41.64hour
exp_low- 0.00± 0.00hour
low_ft_68- 0.0Jy ms
up_ft_68- 2.3Jy ms
low_ft_95- 0.0Jy ms
up_ft_95- 5.8Jy ms
Fit quality
chi_sq- 2033952.117
dof- 2082337
flag_frac- 0.215