Browsing by Author "Chokshi, A"

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Epoch of Galaxy Formation

Chokshi, A (Indian Academy of Sciences, 1997-12)

A preferred epoch for forming galaxies argues strongly in favour of a standard Big Bang cosmology with a single epoch of creation. In this paper I present a model in which there is a causal connection between AGN activity ...
Short-Term Optical Variability in Broad Absorption Line QSOs

Anupama, G. C; Chokshi, A (The American Astronomical Society, 1998-02)

We present the first results from a pilot program to monitor the short-term optical variability in broad absorption line system QSOs. Intranight optical variations of 5% were detected on timescales of 1 hr in QSOs 0846+156 ...
Young Stars and Nonstellar Emission in the Aligned Radio Galaxy 3C 256

Simpson, C; Eisenhardt, P; Armus, L; Chokshi, A; Dickinson, M; Djorgovski, S. G; Elston, R; Jannuzi, B. T; McCarthy, P. J; Pahre, M. A; Soifer, B. T (The American Astronomical Society, 1999-11)

We present ground-based images of the z=1.824 radio galaxy 3C 256 in the standard BVRIJHK filters and an interference filter centered at 8800 Å, a Hubble Space Telescope image in a filter dominated by Lyα emission (F336W), ...

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