Astrophysical: Radiative transfer

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    Multidimensional radiative transfer in stratified atmospheres. IV - Radiative cooling by LTE and non-LTE spectral lines
    The question of efficiency of radiative energy losses in spectral lines is addressed. In a semi-infinite atmosphere with constant temperature, the total...
  • Publication
    Multidimensional radiative transfer in stratified atmospheres. VI - Radiative instabilities
    The possibility that radiative instabilities in stellar atmospheres are driven by transfer of energy processes between stellar gas and the radiation field is...
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    Multidimensional radiative transfer with multilevel atoms. 1: ALI method with preconditioning of the rate equations
    We combine a number of powerful mathematical techniques to produce an effective method for treating multidimensional radiative transfer problems in complex...
  • Publication
    Multidimensional radiative transfer with multilevel atoms. II. The non-linear multigrid method.
    A new iterative method for solving non-LTE multilevel radiative transfer (RT) problems in 1D, 2D or 3D geometries is presented. The scheme obtains the self...
  • Publication
    Multiline Stokes Synthesis of Ellerman Bombs: Obtaining Seamless Information from Photosphere to Chromosphere
    Magnetic reconnection in the lower atmosphere is a critical process in determining the chromospheric dynamics, such as Ellerman bombs and UV bursts. Because the...
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    Nanodiamond Dust and the Far-Ultraviolet Quasar Break
    We explore the possibility that the steepening observed shortward of 1000 Å in the energy distribution of quasars may result from absorption by dust, being...
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    Near optimal angular quadratures for polarised radiative transfer
    In three-dimensional (3D) radiative transfer (RT) problems, the tensor product quadratures are generally not optimal in terms of the number of discrete ray...
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    New ATLAS9 and MARCS Model Atmosphere Grids for the Apache Point Observatory Galactic Evolution Experiment (APOGEE)
    We present a new grid of model photospheres for the SDSS-III/APOGEE survey of stellar populations of the Galaxy, calculated using the ATLAS9 and MARCS codes...
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    New H-band Stellar Spectral Libraries for the SDSS-III/APOGEE Survey
    The Sloan Digital Sky Survey-III (SDSS-III) Apache Point Observatory Galactic Evolution Experiment (APOGEE) has obtained high-resolution (R ∼ 22,500), high...