FRB 20190804E

A burst from FRB20190804E

Repeater: FRB20190804E
Event ID: 46439431
Arrival, 400 MHz: 2019-08-04 04:36:41.435 UTC
Right ascension: 261.218°
Declination: 55.011°

How the sub-bursts differ

This burst has 3 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	Sub-burst 3
Arrival time, 400 MHzMJD	58699.19214600732	58699.19214613402	58699.19214623684
Arrival time, infinite frequencyMJD	58699.19203720826	58699.19203733496	58699.19203743778
Width (fitburst)s	0.004033	0.003955	0.000984
Peak frequencyMHz	491.6	451.6	436.2
Lowest frequencyMHz	438.6	406.0	400.2
Highest frequencyMHz	551.1	502.2	477.9
Spectral index	72.64	49.21	47.45
Spectral running	-176.55	-203.77	-275.66

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Localization

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Waterfall

Notes

The pulse emission region was extended during fluence estimation.

Position

ra: 261.218± 0.165degrees
dec: 55.011± 0.034degrees
gl: 82.82degrees
gb: 34.18degrees

Detection and dispersion

bonsai_snr: 33.6
snr_fitb: 101.6
bonsai_dm: 360.7pc cm⁻³
dm_fitb: 362.8273± 0.01505pc cm⁻³
dm_exc_ne2001: 319.5pc cm⁻³
dm_exc_ymw16: 326.4pc cm⁻³

Arrival time

mjd_400Differs between sub-bursts.: 58699.19214623684± 9.30 × 10⁻¹⁰MJD
mjd_infDiffers between sub-bursts.: 58699.19203743778± 4.61 × 10⁻⁹MJD

Burst shape

bc_width: 0.00393s
width_fitbDiffers between sub-bursts.: 0.000984± 0.0000267s
scat_time: 0.001572± 0.0000809s

Flux and spectrum

flux: 0.93± 0.25Jy
fluence: 6.46± 1.52Jy ms
peak_freqDiffers between sub-bursts.: 436.2MHz
low_freqDiffers between sub-bursts.: 400.2MHz
high_freqDiffers between sub-bursts.: 477.9MHz
sp_idxDiffers between sub-bursts.: 47.45± 1.59
sp_runDiffers between sub-bursts.: -275.66± 8.76

Exposure and fluence thresholds

exp_up: 137.10± 70.40hour
exp_low: 0.00± 0.00hour
low_ft_68: 0.0Jy ms
up_ft_68: 2.5Jy ms
low_ft_95: 0.0Jy ms
up_ft_95: 5.4Jy ms

Fit quality

chi_sq: 2072503.383
dof: 2082817
flag_frac: 0.215