Browsing Publications of Astronomical Society of India by Subject "Early universe"

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Collapsing void in an expanding universe

Mandal, D. R; Banerji, S (Astronomical Soceity of India, 1996)

We consider here the model of a spherical void in an expanding Robertson - Walker (RW) universe with flat space sections. The void is taken as a sphere of low density conducting perfect fluid (Region I) surrounded by a ...
Physics of Structure Formation in the Universe

Choudhury, T. R (Astronomical Society of India, 2003)

In recent years, unprecedented progress in observational cosmology has revealed a great deal of information about the formation and evolution of structures in the universe. This, in turn, has raised many challenging issues ...
Search for HI Reionization Epoch in the Early Universe

Swarup, G (Astronomical Society of India, 2003)

One of the most challenging problems in astronomy today is to search for reionization of the neutral hydrogen (HI), which is expected to occur somewhere between redshifts of about 6 to 20. The reionization is likely to ...

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