6 papers
Reassessing planetary composition: Evidence of rock-dominated envelopes in Uranus and Neptune
Vanesa Ramirez, Yamila Miguel, Saburo Howard
Although Uranus and Neptune are commonly classified as ice giants, their exact compositions remain poorly constrained. Recent studies of outer Solar System bodies challenge the tra…
How Internal Structure Shapes the Metallicity of Giant Exoplanets
Lorenzo Peerani, Saburo Howard, Ravit Helled
The composition and internal structure of gas giant exoplanets encode key information about their formation and evolution. We investigate how different assumed interior structures…
Accurate and thermodynamically consistent hydrogen equation of state for planetary modeling with flow matching
Hao Xie, Saburo Howard, Guglielmo Mazzola
Accurate determination of the equation of state of dense hydrogen is essential for understanding gas giants. Currently, there is still no consensus on methods for calculating its e…
A Denser Hydrogen Inferred from First-Principles Simulations Challenges Jupiter's Interior Models
Cesare Cozza, Kousuke Nakano, Saburo Howard +3
First-principle modeling of dense hydrogen is crucial in materials and planetary sciences. Despite its apparent simplicity, predicting the ionic and electronic structure of hydroge…
The Possibility of Hydrogen-Water Demixing in Uranus, Neptune, K2-18b and TOI-270d
Saburo Howard, Ravit Helled, Armin Bergermann +1
The internal structures of Uranus and Neptune remain unknown. In addition, sub-Neptunes are now thought to be the most common type of exoplanets. Understanding the physical process…
Giant exoplanet composition: Why do the hydrogen-helium equation of state and interior structure matter?
Saburo Howard, Ravit Helled, Simon Müller
Revealing the internal composition and structure of giant planets is fundamental for understanding planetary formation. However, the bulk composition can only be inferred through i…