MAGNETIC DRAG ON HOT JUPITER ATMOSPHERIC WINDS

被引：156

作者：

Perna, Rosalba ^{[1
,2
]}

Menou, Kristen ^{[3
,4
]}

Rauscher, Emily ^{[3
,4
]}

机构：

[1] Univ Colorado, JILA, Boulder, CO 80309 USA

[2] Univ Colorado, Dept Astrophys & Planetary Sci, Boulder, CO 80309 USA

[3] Columbia Univ, Dept Astron, New York, NY 10027 USA

[4] UCSB, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA

来源：

ASTROPHYSICAL JOURNAL | 2010年 / 719卷 / 02期

基金：

美国国家科学基金会;

关键词：

planets and satellites: atmospheres; planets and satellites: individual (HD 209458b); planets and satellites: magnetic fields; GENERAL-CIRCULATION; SIMULATIONS; DYNAMICS; MODEL;

D O I：

10.1088/0004-637X/719/2/1421

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Hot Jupiters, with atmospheric temperatures T greater than or similar to 1000 K, have residual thermal ionization levels sufficient for the interaction of ions with the planetary magnetic field to result in a sizable magnetic drag on the (neutral) atmospheric winds. We evaluate the magnitude of magnetic drag in a representative three-dimensional atmospheric model of the hot Jupiter HD 209458b and find that it is a plausible mechanism to limit wind speeds in this class of atmospheres. Magnetic drag has a strong geometrical dependence, both meridionally and from the dayside to the nightside (in the upper atmosphere), which could have interesting consequences for the atmospheric flow pattern. By extension, close-in eccentric planets with transiently heated atmospheres will experience time-variable levels of magnetic drag. A robust treatment of magnetic drag in circulation models for hot atmospheres may require iterated solutions to the magnetic induction and Saha equations as the hydrodynamic flow is evolved.

引用

页码：1421 / 1426

页数：6

共 50 条

[41] First measurements of Jupiter's zonal winds with visible imaging spectroscopy [J].

Goncalves, Ivan ;

Schmider, F. X. ;

Gaulme, Patrick ;

Morales-Juberias, Raul ;

Guillot, Tristan ;

Rivet, Jean-Pierre ;

Appourchaux, Thierry ;

Boumier, Patrick ;

Jackiewicz, Jason ;

Sato, Bun'ei ;

Ida, Shigeru ;

Ikoma, Masahiro ;

Mekarnia, Djamel ;

Undervvood, Thomas A. ;

Voelz, David .

ICARUS, 2019, 319 :795-811

[42] THE ATMOSPHERIC CIRCULATION OF THE HOT JUPITER WASP-43b: COMPARING THREE-DIMENSIONAL MODELS TO SPECTROPHOTOMETRIC DATA [J].

Kataria, Tiffany ;

Showman, Adam P. ;

Fortney, Jonathan J. ;

Stevenson, Kevin B. ;

Line, Michael R. ;

Kreidberg, Laura ;

Bean, Jacob L. ;

Desert, Jean-Michel .

ASTROPHYSICAL JOURNAL, 2015, 801 (02)

[43] Testing 2D temperature models in Bayesian retrievals of atmospheric properties from hot Jupiter phase curves [J].

Yang, Jingxuan ;

Irwin, Patrick G. J. ;

Barstow, Joanna K. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2023, 525 (04) :5146-5167

[44] Signatures of Nitrogen Chemistry in Hot Jupiter Atmospheres [J].

MacDonald, Ryan J. ;

Madhusudhan, Nikku .

ASTROPHYSICAL JOURNAL LETTERS, 2017, 850 (01)

[45] Spectral signature of atmospheric winds in high-resolution transit observations [J].

Keles, Engin .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2021, 502 (01) :1456-1468

[46] Orbital period modulation in hot Jupiter systems [J].

Lanza, A. F. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2020, 497 (03) :3911-3924

[47] The origin of the eccentricity of the hot Jupiter in CI Tau [J].

Rosotti, G. P. ;

Booth, R. A. ;

Clarke, C. J. ;

Teyssandier, J. ;

Facchini, S. ;

Mustill, A. J. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2017, 464 (01) :L114-L118

[48] Detection of titanium oxide in the atmosphere of a hot Jupiter [J].

Sedaghati, Elyar ;

Boffin, Henri M. J. ;

MacDonald, Ryan J. ;

Gandhi, Siddharth ;

Madhusudhan, Nikku ;

Gibson, Neale P. ;

Oshagh, Mahmoudreza ;

Claret, Antonio ;

Rauer, Heike .

NATURE, 2017, 549 (7671) :238-+

[49] Reduction of mass loss by the hot Jupiter WASP-12b due to its magnetic field [J].

Arakcheev, A. S. ;

Zhilkin, A. G. ;

Kaigorodov, P. V. ;

Bisikalo, D. V. ;

Kosovichev, A. G. .

ASTRONOMY REPORTS, 2017, 61 (11) :932-941

[50] THREE-DIMENSIONAL STRUCTURES OF EQUATORIAL WAVES AND THE RESULTING SUPER-ROTATION IN THE ATMOSPHERE OF A TIDALLY LOCKED HOT JUPITER [J].

Tsai, Shang-Min ;

Dobbs-Dixon, Ian ;

Gu, Pin-Gao .

ASTROPHYSICAL JOURNAL, 2014, 793 (02)

← 1 2 3 4 5 →