102 citations · 335 across the 7 of their papers we have counts for
5 papers · 1 filter
Eternal Inflation, past and future
Anthony Aguirre
Cosmological inflation, if it occurred, radically alters the picture of the `big bang', which would merely point to reheating at the end of inflation. Moreover, this reheating may…
Towards observable signatures of other bubble universes II: Exact solutions for thin-wall bubble collisions
Anthony Aguirre, Matthew C Johnson
We assess the effects of a collision between two vacuum bubbles in the thin-wall limit. After describing the outcome of a generic collision possessing the expected hyperbolic symme…
Metallicity of the intergalactic medium using pixel statistics: IV. Oxygen
Anthony Aguirre, Corey Dow-Hygelund, Joop Schaye +1
We have studied the abundance of oxygen in the IGM by analyzing OVI, CIV, SiIV, and HI pixel optical depths derived from a set of high-quality VLT and Keck spectra of 17 QSOs at 2.…
Towards observable signatures of other bubble universes
Anthony Aguirre, Matthew C Johnson, Assaf Shomer
We evaluate the possibility of observable effects arising from collisions between vacuum bubbles in a universe undergoing false-vacuum eternal inflation. Contrary to conventional w…
The missing metals problem. III How many metals are expelled from galaxies?
Nicolas Bouche, Matthew D. Lehnert, Anthony Aguirre +2
[Abridged] We revisit the metal budget at z~2. In the first two papers of this series, we already showed that ~30% (to <60% if extrapolating the LF) of the metals are observed in a…