Where shadows lie: reconstruction of anisotropies in the neutrino sky
Cosmology predicts the existence of a Cosmic Neutrino Background (CNB), consisting of primordial neutrinos that decoupled 1s after the Big Bang. Detecting the CNB is extremely challenging, but would provide a wealth of information about the very early properties of our Universe. Like the Cosmic Microwave Background (CMB), the CNB carries both primordial and secondary […]
Virgo-I: The Milky Way’s plane of satellites is consistent with ΛCDM
Till Sawala, Marius Cautun, Carlos Frenk, John Helly, Jens Jasche, Adrian Jenkins, Peter Johansson, Guilhem Lavaux , Stuart McAlpine, Matthieu Schaller Nature Astronomy, in press, 2022NatAs.tmp.273S (arXiv.2205.02860) In the 1970s, the great Cambridge astronomer, the late Professor Donald Lynden-Bell, noted that the 11 bright satellites orbiting the Milky Way seem to be arranged in […]
SIBELIUS-DARK: a galaxy catalogue of the Local Volume from a constrained realisation simulation
Stuart McAlpine, John Helly, Matthieu Schaller, Till Sawala, Guilhem Lavaux, Jens Jasche, Carlos Frenk, Adrian Jenkins, John Lucey and Peter Johansson Monthly Notices of the Royal Astronomical Society, 2022, tmp.348M Over the past thirty years cosmologists have developed a standard model of cosmology — Lambda Cold Dark Matter (LCDM) which explains a plethora of astronomical […]
The Milky Way total mass profile as inferred from GAIA DR2
Virgo Consortium
Consortium A new model of black hole growth and AGN feedback: an analytic model that explains the phenomenology seen in the EAGLE simulations as well as the observed colour bimodality in the galaxy population. In galaxies less massive than 3×1010 M☉, young stars and supernovae drive a high entropy outflow. Above a halo mass of 1012 M☉ the outflow […]
The universal structure of dark matter halos over a mass range of 10^20
Cosmological models in which the dark matter consists of cold elementary particles predict that the population of dark matter haloes in the Universe should extend to masses comparable to the Earth’s, many orders of magnitude below those where galaxies can form. Using a novel multi-zoom technique, we carried out a consistent cosmological simulation of the […]
