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astro-ph2002
State transition between high-soft and low-soft states observed in GRS 1915+105
S. Naik, A. R. Rao, Sandip K. Chakrabarti
We present the results of a detailed analysis of RXTE observations which show an unusual state transition between high-soft and low-soft states in the microquasar GRS 1915+105. The…
astro-ph2000
X-ray spectral components in the hard state of GRS 1915+105: origin of the 0.5 - 10 Hz QPO
A. R. Rao, S. Naik, S. V. Vadawale +1
We investigate the origin of the ubiquitous 0.5 - 10 Hz QPO in the Galactic microquasar GRS 1915+105. Using the archival X-ray data from RXTE, we make a wide band X-ray spectral fi…
astro-ph1999
Shift of Spectral Lines due to Dynamic Multiple Scattering and Screening Effect: Implications for Discordant Redshifts
Sisir Roy, Menas Kafatos, Suman Datta
The frequency shift of spectral lines from astronomical objects is most often explained by the Doppler Effect arising in relative motion and the broadening of a particular line is…