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Catastrophic Cooling in Superwinds. III. Non-equilibrium Photoionization
A. Danehkar, M. S. Oey, W. J. Gray
Observations of some starburst-driven galactic superwinds suggest that strong radiative cooling could play a key role in the nature of feedback and the formation of stars and molec…
Covariant Evolution of Gravitoelectromagnetism
A. Danehkar
The long-range gravitational terms associated with tidal forces, frame-dragging effects, and gravitational waves are described by the Weyl conformal tensor, the traceless part of t…
Physical Conditions and Chemical Abundances of the Variable Planetary Nebula IC 4997
A. Danehkar, M. Parthasarathy
The planetary nebula (PN) IC 4997 is one of a few rapidly evolving objects with variable brightness and nebular emission around a hydrogen-deficient star. In this study, we have de…
Morphologies of Wolf-Rayet Planetary Nebulae based on IFU Observations
A. Danehkar
Integral field unit (IFU) spectroscopy of planetary nebulae (PNe) provides a plethora of information about their morphologies and ionization structures. An IFU survey of a sample o…