Thermonuclear X-ray bursts in rapid succession in 4U 1636-536 with AstroSat-LAXPC. (arXiv:1811.10030v1 [astro-ph.HE])
<a href="http://arxiv.org/find/astro-ph/1/au:+Beri_A/0/1/0/all/0/1">Aru Beri</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Paul_B/0/1/0/all/0/1">Biswajit Paul</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Yadav_J/0/1/0/all/0/1">J S Yadav</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Antia_H/0/1/0/all/0/1">H M Antia</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Agrawal_P/0/1/0/all/0/1">P C Agrawal</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Manchanda_R/0/1/0/all/0/1">R. K Manchanda</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Dedhia_D/0/1/0/all/0/1">Dhiraj Dedhia</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Chauhan_J/0/1/0/all/0/1">Jai Verdhan Chauhan</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Pahari_M/0/1/0/all/0/1">Mayukh Pahari</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Misra_R/0/1/0/all/0/1">Ranjeev Misra</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Katoch_T/0/1/0/all/0/1">Tilak Katoch</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Madhwani_P/0/1/0/all/0/1">P. Madhwani</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Shah_P/0/1/0/all/0/1">Parag Shah</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Varun/0/1/0/all/0/1">Varun</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Mate_S/0/1/0/all/0/1">Sujay Mate</a>
We present results from an observation of the Low Mass X-ray Binary 4U
1636-536 obtained with the LAXPC instrument aboard AstroSat. The observations
of 4U 1636-536 made during the performance verification phase of AstroSat
showed seven thermonuclear X-ray bursts in a total exposure of ~ 65 ks over a
period of about two consecutive days. Moreover, the light curve of 4U 1636-536
revealed the presence of a rare triplet of X-ray bursts, having a wait time of
about 5.5 minutes between second and the third bursts. We also present results
from time-resolved spectroscopy performed during these seven X-ray bursts. In
addition, we have also detected a transient Quasi-periodic oscillation (QPO) at
~ 5 Hz. However, we did not find any evidence of kilo-hertz QPOs and/or X-ray
burst oscillations, perhaps due to the hard spectral state of the source during
this observation.
We present results from an observation of the Low Mass X-ray Binary 4U
1636-536 obtained with the LAXPC instrument aboard AstroSat. The observations
of 4U 1636-536 made during the performance verification phase of AstroSat
showed seven thermonuclear X-ray bursts in a total exposure of ~ 65 ks over a
period of about two consecutive days. Moreover, the light curve of 4U 1636-536
revealed the presence of a rare triplet of X-ray bursts, having a wait time of
about 5.5 minutes between second and the third bursts. We also present results
from time-resolved spectroscopy performed during these seven X-ray bursts. In
addition, we have also detected a transient Quasi-periodic oscillation (QPO) at
~ 5 Hz. However, we did not find any evidence of kilo-hertz QPOs and/or X-ray
burst oscillations, perhaps due to the hard spectral state of the source during
this observation.
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