The discovery of the accelerating universe in the late 1990s was a watershed moment in
modern cosmology, as it indicated the presence of a fundamentally new, dominant …

The accelerating expansion of the universe is the most surprising cosmological discovery in
many decades, implying that the universe is dominated by some form of “dark energy” with …

There is almost universal agreement among astronomers that most of the mass in the
Universe and most of the mass in the Galactic halo is dark. Many lines of reasoning suggest …

We present here the final results of the Hubble Space Telescope (HST) Key Project to
measure the Hubble constant. We summarize our method, the results, and the uncertainties …

This authoritative volume shows how modern dynamical systems theory can help us in
understanding the evolution of cosmological models. It also compares this approach with …

The Sunyaev–Zel'dovich effect causes a change in the apparent brightness of the cosmic
microwave background radiation towards a cluster of galaxies or any other reservoir of hot …

We explore the cosmological implications of an ultralight pseudo Nambu-Goldstone boson.
With global spontaneous symmetry breaking scale f≃ 10 18 GeV and explicit breaking scale …

The authors review the relation between the inflationary potential and the spectra of density
waves (scalar perturbations) and gravitational waves (tensor perturbations) produced, with …

Abstract The ACS Virgo Cluster Survey consists of HST ACS imaging for 100 early-type
galaxies in the Virgo Cluster, observed in the F475W (≈ SDSS g) and F850LP (≈ SDSS z) …

OBSERVATIONS are providing progressively tighter constraints on cosmological models
advanced to explain the formation of large-scale structure in the Universe. These include …