FRB 20200225A
One-off burst
- Event ID
- 74565857
- Arrival, 400 MHz
- 2020-02-25 12:47:21.677 UTC
- Right ascension
- 228.262°
- Declination
- 71.241°
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 | 58904.532889686154 | 58904.53288978307 |
| Arrival time, infinite frequencyMJD | 58904.53274498025 | 58904.53274507716 |
| Width (fitburst)s | 0.000556 | 0.002607 |
| Peak frequencyMHz | 637.2 | 444.2 |
| Lowest frequencyMHz | 501.2 | 400.2 |
| Spectral index | 37.16 | 1.10 |
| Spectral running | -39.94 | -5.27 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 228.262± 0.058degrees
dec- 71.241± 0.130degrees
gl- 108.49degrees
gb- 41.69degrees
Detection and dispersion
bonsai_snr- 53.1
snr_fitb- 77.5
bonsai_dm- 485.2pc cm⁻³
dm_fitb- 482.5708± 0.02547pc cm⁻³
dm_exc_ne2001- 444.3pc cm⁻³
dm_exc_ymw16- 451.2pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 58904.53288978307± 4.61 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 58904.53274507716± 8.92 × 10⁻⁹MJD
Burst shape
bc_width- 0.02458s
width_fitbDiffers between sub-bursts.- 0.002607± 0.0001703s
scat_time- 0.032041± 0.0015165s
Flux and spectrum
flux- 1.54± 0.66Jy
fluence- 26.19± 10.03Jy ms
peak_freqDiffers between sub-bursts.- 444.2MHz
low_freqDiffers between sub-bursts.- 400.2MHz
high_freq- 800.2MHz
sp_idxDiffers between sub-bursts.- 1.10± 0.35
sp_runDiffers between sub-bursts.- -5.27± 0.49
Exposure and fluence thresholds
exp_up- 310.88± 47.70hour
exp_low- 113.96± 96.93hour
low_ft_68- 22.2Jy ms
up_ft_68- 2.0Jy ms
low_ft_95- 39.7Jy ms
up_ft_95- 3.6Jy ms
Fit quality
chi_sq- 1558637.298
dof- 1564638
flag_frac- 0.217