Abstract
SAS 3 observations of the Rapid Burster, MXB 1730-335, in three energy channels between 1.3 and 12 keV are used to examine temporary enhancements of the steady X-ray flux from that source following very energetic (long) Type II X-ray bursts. It is found that the average steady X-ray enhancement apparently reaches a maximum value corresponding to about 40% of the time-averaged burst flux, that no significant change in the shape of the X-ray spectrum of the enhancement is evident from the data, and that a certain minimum time interval is needed to obtain enhanced steady emission. The enhanced steady X-ray emission is shown to amount to an average steady contribution of about 5% of the time-averaged burst flux. It is concluded that the observed correlation of the onset and termination of the enhancement with the occurrence of Type II bursts strongly supports the earlier suggestion that the Type II bursts from the Rapid Burster are caused by instabilities in the accretion of matter onto a compact object.
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