Abstract
Several years ago, we designed a particular ray tracing method. Combined with a Hydra parallel code (without baryons), it may compute some CMB anisotropies: weak lensing (WL) and Rees–Sciama (RS) effects. Only dark matter is fully necessary to estimate these effects. For very small angular scales, we made an exhaustive study leading to a lensing contribution slightly—but significantly—greater than previous ones. Afterwards, the same ray tracing procedure was included in a parallel Hydra code with baryons. The resulting code was then tested. This code is being currently applied to the study of the thermal and kinetic Sunyaev–Zel’dovich (SZ) contributions to the CMB anisotropies. We present here our first results.
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References
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Acknowledgements
This work has been supported by the Spanish Ministries of Ciencia e Innovación and Economía y Competitividad, MICINN-FEDER projects FIS2009-07705 and FIS2012-33582. Calculations have been made using the Lluis Vives Computer of UV. We are grateful to the working team of the Servei d’Informàtica de la Universitat de València for their useful help.
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Fullana i Alfonso, M.J., Arnau i Córdoba, J.V., Thacker, R.J., Couchman, H.M.P., Milán, D.P.S. (2014). A New Numerical Approach to Estimate the Sunyaev–Zel’dovich Effect. In: García-Parrado, A., Mena, F., Moura, F., Vaz, E. (eds) Progress in Mathematical Relativity, Gravitation and Cosmology. Springer Proceedings in Mathematics & Statistics, vol 60. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-40157-2_38
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DOI: https://doi.org/10.1007/978-3-642-40157-2_38
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