Detection of the thermonuclear X-ray bursts and dips from the X-ray binary 4U 1323-62 with AstroSat/LAXPC.

The results are obtained with the LAXPCs instrument on-board AstroSat satellite
by observing the Low Mass X-ray Binary neutron star 4U 1323-62. The observations of
4U 1323-62 observed during the performance verification phase of AstroSat showed six
thermonuclear X-ray bursts in a total effective exposure of ∼ 49.5 ks over a period of
about two consecutive days. Recurrence time of the detected thermonuclear bursts is
in accordance with the orbital period of the source ∼ 9400 seconds. Moreover, the light
curve of 4U 1323-62 revealed the presence of two dips. We analyzing the individual
burst data of AstroSat/LAXPC from the neutron star LMXB 4U 1323-62 in the soft
state and present the results from time-resolved spectroscopy performed during all of
the six X-ray bursts. In addition, an already known Quasi-periodic oscillation (QPO)
at ∼ 1 Hz has been detected. However, any evidence of kilohertz QPO was not found.
We have shown the burst profile at different energy ranges. Assuming a distance of 10
kpc, we observed a mean flux ∼ 1.8 × 10 −9 erg cm 2 s −1 . The radius of the blackbody
is found to be highly consistent with the blackbody temperature and the blackbody
flux of the bursts