Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 432, Issue 4, Pages 2773-2778Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stt625
Keywords
stars: coronae; stars: neutron; X-rays: binaries; X-rays: individual: 4U 1636-536
Categories
Funding
- 973 programme [2009CB824800]
- National Natural Science Foundation of China [NSFC 11073021, 11133002, 11103020, XDA04060604]
- Alexander von Humboldt Foundation
- [AYA2009-07391]
- [AYA2012-39303]
- [SGR2009-811]
- [iLINK2011-0303]
- ICREA Funding Source: Custom
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available