Bibcode
Cuesta, Antonio J.; Betancort-Rijo, J. E.; Gottlöber, Stefan; Patiri, Santiago G.; Yepes, Gustavo; Prada, Francisco
Referencia bibliográfica
Monthly Notices of the Royal Astronomical Society, Volume 385, Issue 2, pp. 867-874.
Fecha de publicación:
4
2008
Número de citas
33
Número de citas referidas
29
Descripción
Using the high-resolution cosmological N-body simulation MareNostrum
universe we study the orientation of shape and angular momentum of
galaxy-size dark matter haloes around large voids. We find that haloes
located on the shells of the largest cosmic voids have angular momenta
that tend to be preferentially perpendicular to the direction that joins
the centre of the halo and the centre of the void. This alignment has
been found in spiral galaxies around voids using galaxy redshift
surveys. We measure for the first time the strength of this alignment,
showing how it falls off with increasing distance to the centre of the
void. We also confirm the correlation between the intensity of this
alignment and the halo mass. The analysis of the orientation of the halo
main axes confirms the results of previous works. Moreover, we find a
similar alignment for the baryonic matter inside dark matter haloes,
which is much stronger in their inner parts.