Author

P. J. Kalita

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Preprint Oct 2026

Composition $g$-modes and $f$-modes of neutron stars with gravitationally coupled dark matter: degeneracy with the symmetry energy

Composition gravity ($g$) modes have been proposed as a probe of dark matter in neutron stars, on the basis of one-fluid models in which the dark matter is in chemical equilibrium with the neutrons. We computed in full general relativity the $g$- and $f$-modes of stars in which fermionic dark matter couples to the nucl...

P. J. Kalita, Bharat Kumar, H. Das · 0 citations

Preprint Sep 2026

Quarkyonic matter suppresses neutron-star $g$ modes and reverses their mass trend

Gravity (g) modes are the only neutron-star oscillations that report on the composition of dense matter rather than on its stiffness, and work on hybrid stars has established that a first-order quark transition raises their frequency. Quarkyonic matter does the opposite. Quark-nucleon chemical equilibrium is maintained...

P. J. Kalita, Bharat Kumar · 0 citations