Evolution of Ohmically Heated Hot Jupiters

@article{Batygin2011EvolutionOO,
  title={Evolution of Ohmically Heated Hot Jupiters},
  author={K. Batygin and D. Stevenson and P. Bodenheimer},
  journal={The Astrophysical Journal},
  year={2011},
  volume={738},
  pages={1}
}
We present calculations of thermal evolution of hot Jupiters with various masses and effective temperatures under ohmic dissipation. The resulting evolutionary sequences show a clear tendency toward inflated radii for effective temperatures that give rise to significant ionization of alkali metals in the atmosphere, compatible with the trend of the data. The degree of inflation shows that ohmic dissipation along with the likely variability in heavy element content can account for all of the… Expand

Figures from this paper

The hottest hot Jupiters may host Atmospheric Dynamos
Hot Jupiters have proven themselves to be a rich class of exoplanets which test our theories of planetary evolution and atmospheric dynamics under extreme conditions. Here, we presentExpand
Ohmic Heating Suspends, Not Reverses, the Cooling Contraction of Hot Jupiters
We study the radius evolution of close-in extra-solar Jupiters under Ohmic heating, a mechanism that was recently proposed to explain the large observed sizes of many of these planets. Planets areExpand
Thermo-resistive Instability of Hot Planetary Atmospheres
The atmospheres of hot Jupiters and other strongly forced exoplanets are susceptible to a thermal instability in the presence of ohmic dissipation, weak magnetic drag, and strong winds. TheExpand
OHMIC DISSIPATION IN THE INTERIORS OF HOT JUPITERS
We present models of ohmic heating in the interiors of hot Jupiters in which we decouple the interior and the wind zone by replacing the wind zone with a boundary temperature T iso and magnetic fieldExpand
Extended Heat Deposition in Hot Jupiters: Application to Ohmic Heating
Many giant exoplanets in close orbits have observed radii which exceed theoretical predictions. One suggested explanation for this discrepancy is heat deposited deep inside the atmospheres of theseExpand
Stellar wind - magnetosphere interactions in hot Jupiters
  • D. Buzasi
  • Physics
  • Proceedings of the International Astronomical Union
  • 2015
Abstract One potential star-planet interaction mechanism for hot Jupiters involves planetary heating via currents set up by interactions between the stellar wind and planetary magnetosphere. EarlyExpand
Structure and Evolution of Internally Heated Hot Jupiters
Hot Jupiters receive strong stellar irradiation, producing equilibrium temperatures of $1000 - 2500 \ \mathrm{Kelvin}$. Incoming irradiation directly heats just their thin outer layer, down toExpand
Re-inflated Warm Jupiters Around Red Giants
Since the discovery of the first transiting hot Jupiters, models have sought to explain the anomalously large radii of highly irradiated gas giants. We now know that the size of hot Jupiter radiusExpand
Magnetic Effects in Hot Jupiter Atmospheres
We present magnetohydrodynamic (MHD) simulations of the atmospheres of hot Jupiters ranging in temperature from 1100-1800K. Magnetic effects are negligible in atmospheres with temperatures $\lesssim$Expand
MAGNETICALLY CONTROLLED CIRCULATION ON HOT EXTRASOLAR PLANETS
Through the process of thermal ionization, intense stellar irradiation renders hot Jupiter atmospheres electrically conductive. Simultaneously, lateral variability in the irradiation drives theExpand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 45 REFERENCES
INFLATING HOT JUPITERS WITH OHMIC DISSIPATION
We present a new, magnetohydrodynamic mechanism for inflation of close-in giant extrasolar planets. The idea behind the mechanism is that current, which is induced through interaction of atmosphericExpand
Hot-Jupiters and hot-Neptunes: A common origin?
We compare evolutionary models for close-in exoplanets coupling irradiation and evaporation due respectively to the thermal and high energy flux of the parent star with observations of recentlyExpand
OHMIC DISSIPATION IN THE INTERIORS OF HOT JUPITERS
We present models of ohmic heating in the interiors of hot Jupiters in which we decouple the interior and the wind zone by replacing the wind zone with a boundary temperature T iso and magnetic fieldExpand
Ohmic Dissipation in the Atmospheres of Hot Jupiters
Hot Jupiter atmospheres exhibit fast, weakly ionized winds. The interaction of these winds with the planetary magnetic field generates drag on the winds and leads to ohmic dissipation of the inducedExpand
On the Radii of Extrasolar Giant Planets
We have computed evolutionary models for extrasolar planets that range in mass from 0.1MJ to 3.0MJ and that range in equilibrium temperature from 113 to 2000 K. We present four sequences of models,Expand
Equatorial superrotation on tidally locked exoplanets
The increasing richness of exoplanet observations has motivated a variety of three-dimensional (3D) atmospheric circulation models of these planets. Under strongly irradiated conditions, models ofExpand
THE MECHANICAL GREENHOUSE: BURIAL OF HEAT BY TURBULENCE IN HOT JUPITER ATMOSPHERES
The intense irradiation received by hot Jupiters suppresses convection in the outer layers of their atmospheres and lowers their cooling rates. “Inflated” hot Jupiters, i.e., those with anomalouslyExpand
The Interior Structure, Composition, and Evolution of Giant Planets
We discuss our current understanding of the interior structure and thermal evolution of giant planets. This includes the gas giants, such as Jupiter and Saturn, that are primarily composed ofExpand
Saturn Forms by Core Accretion in 3.4 Myr
We present two new in situ core accretion simulations of Saturn with planet formation timescales of 3.37 Myr (model S0) and 3.48 Myr (model S1), consistent with observed protostellar disk lifetimes.Expand
Interiors of giant planets inside and outside the solar system.
An understanding of the structure and composition of the giant planets is rapidly evolving because of (i) high-pressure experiments with the ability to study metallic hydrogen and define theExpand
...
1
2
3
4
5
...