SIMBAD references

2013MNRAS.432.2773J - Mon. Not. R. Astron. Soc., 432, 2773-2778 (2013/July-2)

X-ray bursts as a probe of the Corona: the case of XRB 4U 1636-536.

JI L., ZHANG S., CHEN Y., ZHANG S.-N., TORRES D.F., KRETSCHMAR P., CHERNYAKOVA M., LI J. and WANG J.-M.

Abstract (from CDS):

To investigate the possible cooling of the corona by soft X-rays bursts, we have studied 114 bursts embedded in the known X-ray evolution of 4U 1636-536. We have grouped these bursts according to the ratio of the flux in the 1.5-12 keV band with respect to that in the 15-50 keV band, as monitored by Rossi X-ray Timing Explorer/All Sky Monitor and Swift/Burst Alert Telescope, respectively. We have detected a shortage at hard X-rays while bursting. This provides hints for a corona cooling process driven by soft X-rays fed by the bursts that occurred on the surface of neutron star. The flux shortage at 30-50 keV has a time lag of 2.4±1.5 s with respect to that at 2-10 keV, which is comparable to that of 0.7±0.5 s reported in bursts of IGR 17473-2721. We comment on the possible origin of these phenomena and on the implications for the models on the location of the corona.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): stars: coronae - stars: neutron - X-rays: binaries - X-rays: individual: 4U 1636-536

Simbad objects: 6

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2023.02.01-00:15:41

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