Dec 11 – 15, 2023
Tsung-Dao Lee Institute
Asia/Shanghai timezone

High-soft to low-hard state transition in black hole X-ray binaries

Dec 15, 2023, 12:15 PM
Hall # 10

Hall # 10

Contributed talk in mini symposium Accretion Processes


Indu Kalpa Dihingia (TDLI-SJTU)


To understand the decaying phase of outbursts in BH-XRBs, we performed very long GRMHD simulations of a geometrically thin accretion disk around a Kerr BH with slowly rotating matter injected from outside. Due to the interaction between the thin disk and injected matter, the accretion flow near the BH goes through different phases. The sequence of phases is: soft state $\rightarrow$ soft-intermediate state $\rightarrow$ hard-intermediate state $\rightarrow$ hard state $\rightarrow$ quiescent state. The talk will discuss the process of transition in detail. We also observed low-frequency QPOs ($\sim 10$Hz) and high-frequency QPOs ($\sim 200$Hz) throughout the evolution.

Primary author

Presentation materials