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  Ray-tracing 3D dust radiative transfer with DART-Ray: code upgrade and public release

Natale, G., Popescu, C. C., Tuffs, R. J., Clarke, A. J., Debattista, V. P., Fischera, J., et al. (2017). Ray-tracing 3D dust radiative transfer with DART-Ray: code upgrade and public release. Astronomy and Astrophysics, 607: A125. doi:10.1051/0004-6361/201731757.

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 Creators:
Natale, Giovanni1, Author           
Popescu, Cristina C.2, Author
Tuffs, Richard J.1, Author           
Clarke, Adam J.2, Author
Debattista, Victor P.2, Author
Fischera, Joerg2, Author
Pasetto, Stefano2, Author
Rushton, Mark2, Author
Thirlwall, Jordan J.2, Author
Affiliations:
1Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society, ou_904550              
2external, ou_persistent22              

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 MPINP: Infrarot-Astrophysik - Abteilung Hofmann
 Abstract: We present an extensively updated version of the purely ray-tracing 3D dust radiation transfer code DART-Ray. The new version includes five major upgrades: 1) a series of optimizations for the ray-angular density and the scattered radiation source function; 2) the implementation of several data and task parallelizations using hybrid MPI + OpenMP schemes; 3) the inclusion of dust self-heating; 4) the ability to produce surface brightness maps for observers within the models in HEALPix format; 5) the possibility to set the expected numerical accuracy already at the start of the calculation. We tested the updated code with benchmark models where the dust self-heating is not negligible. Furthermore, we performed a study of the extent of the source influence volumes, using galaxy models, which are critical in determining the efficiency of the DART-Ray algorithm. The new code is publicly available, documented for both users and developers, and accompanied by several programmes to create input grids for different model geometries and to import the results of N-body and SPH simulations. These programmes can be easily adapted to different input geometries, and for different dust models or stellar emission libraries.

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 Dates: 2017
 Publication Status: Published online
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 Rev. Type: -
 Identifiers: DOI: 10.1051/0004-6361/201731757
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Title: Astronomy and Astrophysics
  Other : Astron. Astrophys.
Source Genre: Journal
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Publ. Info: Berlin : Springer-Verlag
Pages: - Volume / Issue: 607 Sequence Number: A125 Start / End Page: - Identifier: ISSN: 0004-6361
CoNE: https://pure.mpg.de/cone/journals/resource/954922828219_1