Abstract Details

Name: Harikrishna Sripada
Affiliation: Department of Astronomy, Osmania University
Conference ID: ASI2021_611
Title : STUDY OF THE SUDDEN QPO TRANSITION EVENTS IN THE BLACK HOLE SOURCE H1743-322
Authors and Co-Authors : S., Harikrishna(Department of Astronomy, Osmania University), K., Sriram(Department of Astronomy, Osmania University)
Abstract Type : Poster
Abstract Category : Stars, ISM and Galaxy
Abstract : We have analysed five outbursts of a BHXB H1743-332 and found rapid transitions of quasi-periodic oscillations in eight events. Four of them are type-B at ~ 4.5 Hz, one with type-A at 3.5 Hz and the remaining are type-C at ~9.5 Hz. In spectral investigation, it is clear that power law indices are varying though inner disk parameters remain almost stable which indicates either corona or jet might be responsible for the transition. Based on this we have estimated the ejection radii of corona using a plasma ejection model. Quasi-simultaneous study of X-ray and Radio observations indicate that type-B QPOs related to transient/weak jets and type-C QPOs are caused by the base of strong jet structures.