Monash X-ray burst wiki | Kepler / Mean a227

This page presents lightcurves for Mean a227 produced using the KEPLER simulation code, and analysed following Lampe, Heger & Galloway (2015).

The curve presented here is as measured in the neutron star's Newtonian rest frame. To compare this to an observation it is necessary to apply redshift corrections. Instructions for doing this are provided in the companion paper and a summary is provided here

This averaged lightcurve comes from a train of 10 bursts that can be viewed here

Lightcurve

The mean luminosity (green line, left-hand y-axis), is plotted with the lighter green band giving the 1-sigma error calculated from the variation in the lightcurves included in the average. The radius is shown in blue (right-hand y-axis)

Parameters

The following table presents the initial conditions for the model and if a burst occurred, the average burst parameters.

Name	Value	Unit	Description
model	a227	--	Model ID
num	10	--	Number of simulated bursts
z	10.0	%	Metallicity mass fraction
h	48.4	%	Hydrogen mass fraction
lAcc	4.1	--	Accretion luminosity (1)
burstLength	52.5 ± 0.9	s	Burst duration
peakLum	6.47 ± 0.33	10+30W	Peak lumonisity
persLum	49.0 ± 4.25	10+28W	Persistent luminsoity
fluence	1.06 ± 0.05	10+32W	Fluence
tau	16.3 ± 0.3	s	Equivalent burst duration (tau)
tDel	0.02 ± 0.0	h	Recurrence time
conv	6.1 ± 1.53	%	Convexity
r1090	7.825 ± 0.6	s	10% rise time
r2590	6.416 ± 0.403	s	25% rise time
singAlpha	1.56 ± 0.12	--	Power law decay index
singDecay	9.6 ± 0.51	s	Exponential decay timescale
alpha	68.6 ± 2.9	--	Fluence ratio (alpha)
flag	16	--	Analysis quality flag (2)

(1) The accretion rate is in terms of the Eddington accretion rate $(1.75 \times 10^{-8} \, \mathrm{M}_\odot \, \mathrm{yr}^{-1})$

(2) Guide To Analyis Flags

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