Investigating the coronal structure by studying time lags in the Atoll source 4U 1705-44 using AstroSat

We performed a detailed timing study of the Atoll source 4U 1705-44 in order to understand the accretion disk geometry. Cross correlation function (CCF) studies were performed between soft (3-5 keV) and hard energy (15-30 keV) bands using the AstroSat LAXPC data. We detected hard as well as soft lag...

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Bibliographic Details
Published in:	Astrophysics and space science 2021-09, Vol.366 (9), Article 87
Main Authors:	Malu, S., Harikrishna, S., Sriram, K., Agrawal, Vivek K.
Format:	Article
Language:	eng
Subjects:	Accretion Accretion disks Astrobiology Astronomy Astrophysics and Astroparticles Atolls Boundary layers Corona Coronal structure Correlation function Cosmology Cross correlation Energy bands Light curve Neutron stars Observations and Techniques Original Article Physics Physics and Astronomy Space Exploration and Astronautics Space Sciences (including Extraterrestrial Physics Stellar oscillations
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Summary:	We performed a detailed timing study of the Atoll source 4U 1705-44 in order to understand the accretion disk geometry. Cross correlation function (CCF) studies were performed between soft (3-5 keV) and hard energy (15-30 keV) bands using the AstroSat LAXPC data. We detected hard as well as soft lags of the order of few ten to hundred seconds. A dynamical CCF study was performed in the same energy bands for one of the light curves and we found smaller lags of few tens of seconds (
ISSN:	0004-640X 1572-946X