122 citations · 425 across the 14 of their papers we have counts for
14 papers
Pressure induced electride phase formation in calcium: A key to its strange high-pressure behavior
P. Modak, Ashok K. Verma, Peter M. Oppeneer
Elemental calcium (Ca), a simple metal at ambient conditions, has attracted huge interest because of its unusual high-pressure behavior in structural, electrical, and melting prope…
Prediction of an unusual trigonal phase of superconducting LaH stable from 250 to 425 GPa pressure
Ashok K. Verma, P. Modak, Fabian Schrodi +2
Based on evolutionary crystal structure searches in combination with ab initio calculations, we predict an unusual structural phase of the superconducting LaH that is stable…
Phonon-mode specific contributions to room-temperature superconductivity in atomic hydrogen at high pressures
Ashok K. Verma, P. Modak, Fabian Schrodi +2
We investigate the role of specific phonon mode symmetries for the room temperature superconductivity in atomic hydrogen under large pressure. Using anisotropic Migdal-Eliashberg t…
Expected Precision of Europa Clipper Gravity Measurements
Ashok K. Verma, Jean-Luc Margot
The primary gravity science objective of NASA's Clipper mission to Europa is to confirm the presence or absence of a global subsurface ocean beneath Europa's Icy crust. Gravity fie…
Prospects of dynamical determination of General Relativity parameter beta and solar quadrupole moment J2 with asteroid radar astronomy
Ashok K. Verma, Jean-Luc Margot, Adam H. Greenberg
We evaluated the prospects of quantifying the parameterized post-Newtonian parameter beta and solar quadrupole moment J2 with observations of near-Earth asteroids with large orbita…
Yarkovsky Drift Detections for 247 Near-Earth Asteroids
Adam H. Greenberg, Jean-Luc Margot, Ashok K. Verma +2
The Yarkovsky effect is a thermal process acting upon the orbits of small celestial bodies, which can cause these orbits to slowly expand or contract with time. The effect is subtl…