98 citations · 693 across the 35 of their papers we have counts for
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astro-ph.GA2013★ 27 cited
Astrophysics of Bertrand Space-times
Dipanjan Dey, Kaushik Bhattacharya, Tapobrata Sarkar
We construct a model for galactic dark matter that arises as a solution of Einstein gravity, and is a Bertrand space-time matched with an external Schwarzschild metric. This model…
astro-ph.GA2013★ 20 cited
Galactic Dark Matter and Bertrand Space-times
Dipanjan Dey, Kaushik Bhattacharya, Tapobrata Sarkar
Bertrand space-times (BSTs) are static, spherically symmetric solutions of Einstein's equations, that admit stable, closed orbits. Starting from the fact that to a good approximati…