409 citations · 861 across the 11 of their papers we have counts for
11 papers
Signatures of Atmospheric Mass Loss and Planet Migration in the Time Evolution of Short-Period Transiting Exoplanets
Rachel B. Fernandes, Galen J. Bergsten, Gijs D. Mulders +19
Comparative studies of young and old exoplanet populations offer a glimpse into how planets may form and evolve with time. We present an occurrence rate study of short-period (1…
The miscibility of hydrogen and water in planetary atmospheres and interiors
Akash Gupta, Lars Stixrude, Hilke E. Schlichting
Many planets in the solar system and across the galaxy have hydrogen-rich atmospheres overlying more heavy element-rich interiors with which they interact for billions of years. At…
Properties of the radius valley around low mass stars: Predictions from the core-powered mass-loss mechanism
Akash Gupta, Lorraine Nicholson, Hilke E. Schlichting
In recent years, analyzing the bimodality in the size distribution of small planets, i.e., the `radius valley', has given us unprecedented insight into the planet formation process…
The fundamentals of Lyman-alpha exoplanet transits
James E. Owen, Ruth A. Murray-Clay, Ethan Schreyer +7
Lyman- transits have been detected from several nearby exoplanets and are one of our best insights into the atmospheric escape process. However, due to ISM absorption, we typica…
Photoevaporation vs. core-powered mass-loss: model comparison with the 3D radius gap
James G. Rogers, Akash Gupta, James E. Owen +1
The EUV/X-ray photoevaporation and core-powered mass-loss models are both capable of reproducing the bimodality in the sizes of small, close-in exoplanets observed by the \textit{K…
Caught in the Act: Core-powered Mass-loss Predictions for Observing Atmospheric Escape
Akash Gupta, Hilke E. Schlichting
Past studies have demonstrated that atmospheric escape by the core-powered mass-loss mechanism can explain a multitude of observations associated with the radius valley that separa…
Electrical conductivity of strongly magnetized dense quark matter -- possibility of quantum hall effect
Jayanta Dey, Aritra Bandyopadhyay, Akash Gupta +2
We have pointed out the possibility of quantum Hall effect or quantum patterns of transportation in a degenerate strongly magnetized quark matter, which might be expected inside a…
The evolutionary track of H/He envelope in the observed population of sub-Neptunes and Super-Earths planets
Raissa Estrela, Mark Swain, Akash Gupta +2
The observational detection of a localized reduction in the small planet occurrence rate, sometimes termed a 'gap', is an exciting discovery because of the implications for planet…
Signatures of the Core-Powered Mass-Loss Mechanism in the Exoplanet Population: Dependence on Stellar Properties and Observational Predictions
Akash Gupta, Hilke E. Schlichting
Recent studies have shown that atmospheric mass-loss powered by the cooling luminosity of a planet's core can explain the observed radius valley separating super-Earths and sub-Nep…
Sculpting the Valley in the Radius Distribution of Small Exoplanets as a by-product of Planet Formation: The Core-Powered Mass-Loss Mechanism
Akash Gupta, Hilke E. Schlichting
Recent observations revealed a bimodal radius distribution of small, short-period exoplanets with a paucity in their occurrence, a radius `valley', around . In…
Rings of non-spherical, axisymmetric bodies
Akash Gupta, Sharvari Nadkarni-Ghosh, Ishan Sharma
We investigate the dynamical behavior of rings around bodies whose shapes depart considerably from that of a sphere. To this end, we have developed a new self-gravitating discrete…