90 citations · 551 across the 13 of their papers we have counts for
4 papers · 1 filter
Numerical simulations of the metallicity distribution in dwarf spheroidal galaxies
E. Ripamonti, E. Tolstoy, A. Helmi +2
Recent observations show that the number of stars with very low metallicities in the dwarf spheroidal satellites of the Milky Way is low, despite the low average metallicities of s…
A metal rich molecular cloud surrounds GRB 050904 at redshift 6.3
S. Campana, D. Lazzati, E. Ripamonti +7
GRB050904 is the gamma-ray burst with the highest measured redshift. We performed time resolved X-ray spectroscopy of the late GRB and early afterglow emission. We find robust evid…
The impact of dark matter decays and annihilations on the formation of the first structures
E. Ripamonti, M. Mapelli, A. Ferrara
We derive the effects of DM decays and annihilations on structure formation. We consider moderately massive DM particles (sterile neutrinos and light DM), as they are expected to g…
Intergalactic medium heating by dark matter
E. Ripamonti, M. Mapelli, A. Ferrara
We derive the evolution of the energy deposition in the intergalactic medium (IGM) by dark matter (DM) decays/annihilations for both sterile neutrinos and light dark matter (LDM) p…