3.6k citations · 7.3k across the 78 of their papers we have counts for
20 papers · 1 filter
Large Dynamical Tide Amplitudes from Small Kicks at Pericenter
Phil Arras, Hang Yu, Nevin N. Weinberg
The effect of dynamical tide ``kicks" on eccentric binary orbits is considered using the orbital mapping method. It is demonstrated that when mode damping is negligible the mode am…
Orbital Decay of Hot Jupiters due to Weakly Nonlinear Tidal Dissipation
Nevin N. Weinberg, Niyousha Davachi, Reed Essick +3
We study tidal dissipation in hot Jupiter host stars due to the nonlinear damping of tidally driven -modes, extending the calculations of Essick & Weinberg (2016) to a wide vari…
Dust Accretion onto Exoplanets
Phil Arras, Megan Wilson, Matthew Pryal +1
Accretion of interplanetary dust onto gas giant exoplanets is considered. Poynting-Robertson drag causes dust particles from distant reservoirs to slowly inspiral toward the star.…
A Novel Solution for Resonant Scattering Using Self-Consistent Boundary Conditions
B. Connor McClellan, Shane Davis, Phil Arras
We present two novel additions to the semi-analytic solution of Lyman (Ly) radiative transfer in spherical geometry: (1) implementation of the correct boundary condition for…
Tidal evolution and diffusive growth during high-eccentricity planet migration: revisiting the eccentricity distribution of hot Jupiters
Hang Yu, Nevin N. Weinberg, Phil Arras
High-eccentricity tidal migration is a potential formation channel for hot Jupiters. During this process, the planetary f-mode may experience a phase of diffusive growth, allowing…
Tides in the high-eccentricity migration of hot Jupiters: Triggering diffusive growth by nonlinear mode interactions
Hang Yu, Nevin N. Weinberg, Phil Arras
High eccentricity migration is a possible formation channel for hot Jupiters. However, in order for it to be consistent with the observed population of planets, tides must circular…
Atmospheric Escape Processes and Planetary Atmospheric Evolution
Guillaume Gronoff, Phil Arras, Suleiman M Baraka +17
The habitability of the surface of any planet is determined by a complex evolution of its interior, surface, and atmosphere. The electromagnetic and particle radiation of stars dri…
A Model of the H and Na Transmission Spectrum of HD 189733b
Chenliang Huang, Phil Arras, Duncan Christie +1
This paper presents a detailed hydrostatic model of the upper atmosphere of HD 189733b, with the goal of constraining its temperature, particle densities, and radiation field over…
Tidal Dissipation in WASP-12
Nevin N. Weinberg, Meng Sun, Phil Arras +1
WASP-12 is a hot Jupiter system with an orbital period of , making it one of the shortest-period giant planets known. Recent transit timing observations by Mac…
A New Model of Roche-lobe Overflow for Short-Period Gaseous Planets and Binary Stars
Brian Jackson, Phil Arras, Kaloyan Penev +2
Some close-in gaseous exoplanets are nearly in Roche-lobe contact, and previous studies show tidal decay can drive hot Jupiters into contact during the main sequence of their host…
Investigation of the environment around close-in transiting exoplanets using CLOUDY
Jake D. Turner, Duncan Christie, Phil Arras +2
It has been suggested that hot stellar wind gas in a bow shock around an exoplanet is sufficiently opaque to absorb stellar photons and give rise to an observable transit depth at…
Tidal Decay and Stable Roche-Lobe Overflow of Short-Period Gaseous Exoplanets
Brian Jackson, Emily Jensen, Sarah Peacock +2
Many gaseous exoplanets in short-period orbits are on the verge or are in the process of Roche-lobe overflow (RLO). Moreover, orbital stability analysis shows tides can drive many…
Axisymmetric Simulations of Hot Jupiter-Stellar Wind Hydrodynamic Interaction
Duncan Christie, Phil Arras, Zhi-Yun Li
Gas giant exoplanets orbiting at close distances to the parent star are subjected to large radiation and stellar wind fluxes. In this paper, hydrodynamic simulations of the planeta…
Magnetohydrodynamic Simulations of Hot Jupiter Upper Atmospheres
George B. Trammell, Zhi-Yun Li, Phil Arras
Two-dimensional simulations of hot Jupiter upper atmospheres including the planet's magnetic field are presented. The goal is to explore magnetic effects on the layer of the atmosp…
Hα Absorption in Transiting Exoplanet Atmospheres
Duncan Christie, Phil Arras, Zhi-Yun Li
Absorption of stellar Hα by the upper atmosphere of the planet HD189733b has recently been detected by Jensen et al. Motivated by this observation, we have developed a model for at…
Hot Jupiter Magnetospheres
George B. Trammell, Phil Arras, Zhi-Yun Li
(Abridged) The upper atmospheres of close-in gas giant exoplanets are subjected to intense heating/tidal forces from their parent stars. Atomic/ionized hydrogen (H) layers are suff…
Response to "Concerning Thermal Tides on Hot Jupiters" (Goodman 2009; arXiv: 0901.3279)
Phil Arras, Aristotle Socrates
Motivated by the comments of Goodman (2009) on our paper concerning thermal tides (Arras and Socrates 2009a), we have studied an idealized problem to understand the global response…
Thermal Tides in Fluid Extrasolar Planets
Phil Arras, Aristotle Socrates
Asynchronous rotation and orbital eccentricity lead to time-dependent irradiation of the close-in gas giant exoplanets -- the hot Jupiters. This time-dependent surface heating give…
Massive Satellites of Close-In Gas Giant Exoplanets
Timothy A. Cassidy, Rolando Mendez, Phil Arras +2
We study the orbits, tidal heating and mass loss from satellites around close-in gas giant exoplanets. The focus is on large satellites which are potentially observable by their tr…
Thermal Tides in Short Period Exoplanets
Phil Arras, Aristotle Socrates
Time-dependent insolation in a planetary atmosphere induces a mass quadrupole upon which the stellar tidal acceleration can exert a force. This "thermal tide" force can give rise t…