13 citations · 35 across the 5 of their papers we have counts for
5 papers
Coupled HBO and NBO variations in the Z source GX 5-1: inner accretion disk as the location of QPOs
K. Sriram, A. R. Rao, C. S. Choi
The simultaneous and coupled evolution of horizontal branch oscillation (HBO) and normal branch oscillation (NBO) in Z-type sources suggests that the production of HBO is connected…
XMM-Newton confirmation of a new intermediate polar: XMMU J185330.7-012815
C. Y. Hui, K. Sriram, C. -S. Choi
We report the results from a detailed spectro-imaging and temporal analysis of an archival XMM-Newton observation of a new intermediate polar XMMU J185330.7-012815. Its X-ray spect…
A Detection of an Anti-correlated Hard X-ray Lag in AM Herculis
K. Sriram, C. S. Choi, A. R. Rao
Context {Earlier cross-correlation studies for AM Her were performed in various energy range from optical to X-ray and suggested that it mostly shows a high level of correlation bu…
Anti-correlated Soft Lags in the Intermediate State of Black Hole Source GX 339-4
K. Sriram, A. R. Rao, C. S. Choi
We report the few hundred second anti-correlated soft lags between soft and hard energy bands in the source GX 339-4 using RXTE observations. In one observation, anti-correlated so…
Subsonic propellers in a strong wind as anomalous X-ray pulsars
N. R. Ikhsanov, C. -S. Choi
The appearance of subsonic propellers situated in a strong wind is discussed. We show that it is similar to the appearance of anomalous X-ray pulsars (AXPs) provided the mass and t…