Results 1 to 10 of about 4,004,079 (302)
Spherical Harmonics for the 1D Radiative Transfer Equation. I. Reflected Light
The Astrophysical Journal, 2023 A significant challenge in radiative transfer theory for atmospheres of exoplanets and brown dwarfs is the derivation of computationally efficient methods that have adequate fidelity to more precise, numerically demanding solutions.
Caoimhe M. Rooney +2 more
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Optimizing the Resolution of Hydrodynamic Simulations for MCRaT Radiative Transfer Calculations
The Astrophysical Journal, 2023 Despite their discovery about half a century ago, the gamma-ray burst (GRB) prompt emission mechanism is still not well understood. Theoretical modeling of the prompt emission has advanced considerably due to new computational tools and techniques.
Jose Arita-Escalante +2 more
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The Mass Fractionation of Helium in the Escaping Atmosphere of HD 209458b
The Astrophysical Journal, 2023 The absorption signals of metastable He in HD 209458b and several other exoplanets can be explained via an escaping atmosphere model with a subsolar He/H ratio. The low abundance of helium can be a result of planet formation if there is a small amount of
Lei Xing, Dongdong Yan, Jianheng Guo
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Distribution and Kinematics of H i through Raman He ii Spectroscopy of NGC 6302
The Astrophysical Journal, 2023 The young planetary nebula NGC 6302 is known to exhibit Raman-scattered He ii features at 6545 Å and 4851 Å. These features are formed through inelastic scattering of He ii λλ 1025 and 972 with hydrogen atoms in the ground state, for which the cross ...
Seok-Jun Chang +3 more
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Journal of Advances in Modeling Earth Systems, 2020 One‐dimensional radiative transfer solvers are computationally much more efficient than full three‐dimensional radiative transfer solvers but do not account for the horizontal propagation of radiation and thus produce unrealistic surface irradiance ...
M. A. Veerman +4 more
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Remote Sensing, 2023 Developing a machine-learning-based radiative transfer emulator in a weather forecasting model is valuable because it can significantly improve the computational speed of forecasting severe weather events.
Hwan-Jin Song, Soonyoung Roh
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The impact of coupled 3D shortwave radiative transfer on surface radiation and cumulus clouds over land [PDF]
Atmospheric Chemistry and PhysicsRadiative transfer is a 3D process, but most atmospheric models consider radiation only in the vertical direction for computational efficiency. This results in inaccurate surface radiation fields, as the horizontal transport of radiation is neglected ...
M. Tijhuis +2 more
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The Astrophysical Journal, 2023 To understand the mechanism behind high- z Ly α nebulae, we simulate the scattering of Ly α in a H i halo about a central Ly α source. For the first time, we consider both smooth and clumpy distributions of halo gas, as well as a range of outflow speeds,
Seok-Jun Chang +4 more
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A Refined Four-Stream Radiative Transfer Model for Row-Planted Crops
Remote Sensing, 2020 In modeling the canopy reflectance of row-planted crops, neglecting horizontal radiative transfer may lead to an inaccurate representation of vegetation energy balance and further cause uncertainty in the simulation of canopy reflectance at larger ...
Xu Ma, Tiejun Wang, Lei Lu
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CO Mapping of Cygnus-X—Volume Density Distribution
The Astrophysical Journal, 2023 We present CO(2-1) and ^13 CO(2-1) maps of the Cygnus-X molecular cloud complex using the 10 m Heinrich Hertz Submillimeter Telescope. The maps cover the southern portion of the complex, which is strongly impacted by the feedback from the Cygnus OB2 ...
Jonah C. Baade +3 more
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