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Fast simulations of extragalactic microlensing

Abstract: We present a new and very fast method for producing microlensing magnification maps at high optical depths. It is based on the combination of two approaches: (a) the two-dimensional Poisson solver for a deflection potential and (b) inverse polygon mapping. With our method we extremely reduce the computing time for the generation of magnification patterns and avoid the use of highly demanding computer resources. For example, the generation of a magnification map of size 2000?×?2000 pixels, covering a region of 20 Einstein radii, takes a few seconds on a state-of-the-art laptop. The method presented here will facilitate the massive production of magnification maps for extragalactic microlensing studies within the forthcoming surveys without the need for large computer clusters. The modest demand of computer power and a fast execution time allow the code developed here to be placed on a standard server and thus provide the public online access through a web-based interface.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: Astronomy & Astrophysics, 2021, 653, A121

Editorial: EDP Sciences

 Año de publicación: 2021

Nº de páginas: 7

Tipo de publicación: Artículo de Revista

 DOI: https://doi.org/10.1051/0004-6361/202140527

ISSN: 0004-6361,1432-0746

 Proyecto español: AYA2017-89815-P

Url de la publicación: https://doi.org/10.1051/0004-6361/202140527