$f(R)$ Gravity and Crossing the Phantom Divide Barrier

$f(R)$ gravity theories in the Palatini Formalism constrained from strong lensing

$f(R)$-Cosmolgy from Early Universe Upto Future Cosmic Collapse and its Avoidance

$f(T)$ models with phantom divide line crossing

$H(z)$ diagnostics on the nature of dark energy

$H_2^{+}$ molecular ion in a strong magnetic field: ground state

$H_3^{++}$ molecular ions can exist in strong magnetic fields

$JHK'$ Imaging Photometry of Seyfert 1 AGNs and Quasars II: Observation of Long-Term Variability

$JHK'$ Imaging Photometry of Seyfert 1 AGNs and Quasars III: Variability of Radio Quiet and Radio Loud AGNs

$m=1$ Ideal Internal Kink Modes in a Line-tied Screw Pinch

$N$-body Simulation of Planetesimal Formation Through Gravitational Instability of a Dust Layer

$N+1$ formalism in Einstein-Gauss-Bonnet gravity

$Om$ Diagnostic for Dilaton Dark Energy

$p$-Process simulations with a modified reaction library

$R + R^2$ Gravity as $R +$ Backreaction

$R^2$ corrections to the cosmological dynamics of inflation in the Palatini formulation

$uvby-H_β$ CCD photometry and membership segregation of the open cluster NGC2682 (M67)

$uvby-β$ photoelectric photometry of the open clusters NGC 6811 and NGC 6830

$w$-cosmological singularities

$w$-singularities in cosmological models