TY - JOUR
T1 - Secular evolution of galaxies and galaxy clusters in decaying dark matter cosmology
AU - Ferrer, Francesc
AU - Nipoti, Carlo
AU - Ettori, Stefano
PY - 2009/9/24
Y1 - 2009/9/24
N2 - If the dark matter sector in the Universe is composed by metastable particles, galaxies and galaxy clusters are expected to undergo significant secular evolution from high to low redshift. We show that the decay of dark matter, with a lifetime compatible with cosmological constraints, can be at the origin of the observed evolution of the Tully-Fisher relation of disk galaxies and alleviate the problem of the size evolution of elliptical galaxies, while being consistent with the current observational constraints on the gas fraction of clusters of galaxies.
AB - If the dark matter sector in the Universe is composed by metastable particles, galaxies and galaxy clusters are expected to undergo significant secular evolution from high to low redshift. We show that the decay of dark matter, with a lifetime compatible with cosmological constraints, can be at the origin of the observed evolution of the Tully-Fisher relation of disk galaxies and alleviate the problem of the size evolution of elliptical galaxies, while being consistent with the current observational constraints on the gas fraction of clusters of galaxies.
UR - https://www.scopus.com/pages/publications/70349801981
U2 - 10.1103/PhysRevD.80.061303
DO - 10.1103/PhysRevD.80.061303
M3 - Article
AN - SCOPUS:70349801981
SN - 1550-7998
VL - 80
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 6
M1 - 061303
ER -