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4U 1820-30 1997 May

This profile forms part of the sample assembled for the paper "Thermonuclear burst observations for model comparisons: a reference catalogue" by Galloway, Goodwin & Keek (2017), to be submitted to PASA

This profile is from MINBAR burst #2289 (#1 in Galloway et al. 2008, ApJS 179, 360), of 4U 1820-303, observed on MJD 50570.73110 by the Rossi X-ray Timing Explorer (RXTE).

Recurrence time 2.681±0.007 hr

This event precedes the pair of bursts #1648 & 1649 observed by BeppoSAX; the recurrence time is derived from a linear fit to the times of these 3 events. The assumed cycle count is [0,19,20]

Click here to download the data file

The figure shows the results of time-resolved spectroscopic analysis. The estimated bolometric flux is plotted as green symbols & line, in units of 10-9 erg cm-2 s-1 (inner left-hand y-scale). The blackbody temperature kT is shown as purple symbols & line (right-hand y-axis, units of keV) and the normalisation as the aqua symbols & line (outermost left-hand y-scale, units of R2/d2, where R is the emitting radius in km, and d the distance to the source in units of 10 kpc).

This version of the data now includes deadtime correction (see and has the updated effective area of the v11.7 responses (see

All uncertainties are at 1-sigma (68%) confidence. Note that the time value specifies the BEGINNING of the time bin

For full details of the source sample see the MINBAR home page

back to the reference burst table

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Page last modified on December 19, 2016, at 11:28 PM