Zobrazeno 1 - 10
of 27
pro vyhledávání: '"James Y-K. Cho"'
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 1, p 37 (2024)
We analyze the structure and dynamics of the plasma atmospheres and Coulomb-liquid oceans on neutron stars. Salient dynamical parameters are identified and their values estimated for the governing set of magnetohydrodynamics equations. Neutron star a
Externí odkaz:
https://doaj.org/article/8c31744a2c474c9082d427a2fbdad052
Autor:
Woosok Moon, James y-k. Cho
Publikováno v:
Tellus: Series A, Dynamic Meteorology and Oceanography, Vol 72, Iss 1, Pp 1-12 (2020)
The role of planetary-scale zonally-asymmetric thermal forcing on large-scale atmospheric dynamics is crucial for understanding low-frequency phenomena in the atmosphere. Despite its paramount importance, good theoretical foundation for the understan
Externí odkaz:
https://doaj.org/article/84f760a87e274da2b4e18dfc6d376ad7
Autor:
Billy Edwards, Quentin Changeat, Angelos Tsiaras, Kai Hou Yip, Ahmed F. Al-Refaie, Lara Anisman, Michelle F. Bieger, Amélie Gressier, Sho Shibata, Nour Skaf, Jeroen Bouwman, James Y-K. Cho, Masahiro Ikoma, Olivia Venot, Ingo Waldmann, Pierre-Olivier Lagage, Giovanna Tinetti
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 269, Iss 1, p 31 (2023)
We present analysis of the atmospheres of 70 gaseous extrasolar planets via transit spectroscopy with Hubble’s Wide Field Camera 3 (WFC3). For over half of these, we statistically detect spectral modulation that our retrievals attribute to molecula
Externí odkaz:
https://doaj.org/article/fe3acdb0f3e14c4f80c92c2ab3277da7
Publikováno v:
Journal of Fluid Mechanics. 935
Astrophysical flows are often subject to both rotation and large-scale background magnetic fields. Individually, each is known to two-dimensionalize the flow in the perpendicular plane. In realistic settings, both of these effects are simultaneously
Publikováno v:
The Astrophysical Journal Letters. 913:L32
Observations of hot-Jupiter atmospheres show large variations in the location of the “hot spot” and the amplitude of spectral features. Atmospheric flow simulations using the commonly employed forcing and initialization have generally produced a
Autor:
Woosok Moon, Steven M. Tobias, Heidar Thrastarson, James Y-K. Cho, Tommi Koskinen, Peter L. Read, Jack William Skinner
We review the recent progress in understanding the jet structures on exoplanets as well as on and inside the Sun. The emphasis is on the more robust aspects of observation and numerical modeling that relate directly to jets. For the exoplanets, the p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b40b727d3415a5d18aabc827d1d2b4e1
https://doi.org/10.1017/9781107358225.005
https://doi.org/10.1017/9781107358225.005
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 454:3423-3431
We revisit the issue of sensitivity to initial flow and intrinsic variability in hot-Jupiter atmospheric flow simulations, originally investigated by Cho et al. (2008) and Thrastarson & Cho (2010). The flow in the lower region (~1 to 20 MPa) `dragged
Autor:
Kristen Menou, Sara Seager, Ian J. M. Crossfield, Joseph Harrington, Brad M. S. Hansen, Drake Deming, James Y-K. Cho
Publikováno v:
The Astrophysical Journal. 723:1436-1446
We report the detection of 24 micron variations from the planet-hosting upsilon Andromedae system consistent with the orbital periodicity of the system's innermost planet, upsilon And b. We find a peak-to-valley phase curve amplitude of 0.00130 times
Publikováno v:
The Astrophysical Journal. 722:178-187
Many extrasolar planets orbit close in and are subject to intense ionizing radiation from their host stars. Therefore, we expect them to have strong, and extended, ionospheres. Ionospheres are important because they modulate escape in the upper atmos
Publikováno v:
The Astrophysical Journal. 681:1646-1652
Turbulence is ubiquitous in Solar System planetary atmospheres. In hot Jupiter atmospheres, the combination of moderately slow rotation and thick pressure scale height may result in dynamical weather structures with unusually large, planetary-size sc