Abstract Details
| Name: Aneesha U Affiliation: IIST, Thiruvananthapuram Conference ID: ASI2019_260 Title : Study of long term evolution of accretion dynamics of GX 339-4 Authors and Co-Authors : Aneesha U, Dr Samir Mandal, Sreehari H Abstract Type : Oral Abstract Category : Stars, ISM and Galaxy Abstract : We study the dynamical behaviour of the outbursting black hole source GX 339-4 during 2002-2011 outbursts using XMM-Newton, SWIFT, and RXTE archive data. As this source has undergone frequent outbursts and passed through all the four spectral states, it becomes an ideal source to study accretion dynamics. We have considered four complete outbursts (2002/03, 2004/05, 2006/07, 2010/11) during the period 2002-2011, studied the spectral evolution of the source using these data and discuss the similarities/differences between outbursts. The dynamical evolution of accretion parameters has been studied by modelling the individual observed spectrum with two component accretion disc model which is an established physical model. Also, a generic mathematical model has been proposed to understand the evolution of accretion parameters for sources with longer rising time like GX 339-4. |