Browsing by Subject "Power spectrum"

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How late can the dark matter form in our universe?

Sarkar, A; Das, Subinoy; Sethi, Shiv K (IOP Publishing, 2015-03)

We put constraints on the epoch of dark matter formation for a class of non-WIMP (Weakly Interacting Massive Particle) dark matter candidates. These models allow a fraction of Cold Dark Matter (CDM) to be formed between ...
On dark matter-dark radiation interaction and cosmic reionization

Das, Subinoy; Mondal, Rajesh; Vikram, R; Srikanth, S (IOP Publishing, 2018-08)

The dark matter sector of our universe can be much richer than the conventional picture of a single weakly interacting cold dark matter particle species. An intriguing possibility is that the dark matter particle interacts ...
On the recurrence of sudden ionospheric disturbances

Shelke, R. N; Pande, M. C (Astronomical Society of India, 1984-09)

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