65 citations · 155 across the 10 of their papers we have counts for
6 papers · 1 filter
What triggers type Ia supernovae: Prompt detonations from primordial black holes or companion stars?
Heinrich Steigerwald
We set up and perform collision rate simulations between dark matter in the form of asteroid-mass primordial black holes (PBHs) and white dwarf stars. These encounters trigger prom…
Revisiting constraints on asymmetric dark matter from collapse in white dwarf stars
Heinrich Steigerwald, Valerio Marra, Stefano Profumo
The runaway collapse phase of a small dark matter cluster inside a white dwarf star encompasses a reversible stage, where heat can be transferred back and forth between nuclear and…
Type Ia Supernova Magnitude Step from the local Dark Matter Environment
Heinrich Steigerwald, Davi Rodrigues, Stefano Profumo +1
Residuals in the Hubble diagram at optical wavelengths and host galaxy stellar mass are observed to correlate in Type Ia supernovae (SNe Ia) (`magnitude step'). Among possible prog…
Probing non-standard gravity with the growth index: a background independent analysis
Heinrich Steigerwald, Julien Bel, Christian Marinoni
Measurements of the growth index provide a clue as to whether Einstein's field equations encompass gravity also on large cosmic scales, those where the expansion of the univ…
Phenomenology of dark energy: exploring the space of theories with future redshift surveys
Federico Piazza, Heinrich Steigerwald, Christian Marinoni
We use the effective field theory of dark energy to explore the space of modified gravity models which are capable of driving the present cosmic acceleration. We identify five univ…
The VIMOS Public Extragalactic Redshift Survey (VIPERS): from the galaxy clustering ratio measured at
J. Bel, C. Marinoni, B. R. Granett +47
We use a sample of about 22,000 galaxies at from the VIPERS PDR-1 catalogue, to constrain the cosmological model through a measurement of the galaxy {\it clustering ra…