English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The Cosmic Neutrino Background (CNB) encodes a wealth of information, but hasnot yet been observed directly. To determine the prospects of detection and tostudy its information content, we reconstruct the phase-space distribution oflocal relic neutrinos from the three-dimensional distribution of matter within200 Mpc/h of the Milky Way. Our analysis relies on constrained realizationsimulations and forward modelling of the 2M++ galaxy catalogue. We find thatthe angular distribution of neutrinos is anti-correlated with the projectedmatter density, due to the capture and deflection of neutrinos by massivestructures along the line of sight. Of relevance to tritium captureexperiments, we find that the gravitational clustering effect of thelarge-scale structure on the local number density of neutrinos is moreimportant than that of the Milky Way for neutrino masses less than 0.1 eV.Nevertheless, we predict that the density of relic neutrinos is close to thecosmic average, with a suppression or enhancement over the mean of (-0.3%, +7%,+27%) for masses of (0.01, 0.05, 0.1) eV. This implies no more than a marginalincrease in the event rate for tritium capture experiments like PTOLEMY. Wealso predict that the CNB and CMB rest frames coincide for 0.01 eV neutrinos,but that neutrino velocities are significantly perturbed for masses larger than0.05 eV. Regardless of mass, we find that the angle between the neutrino dipoleand the ecliptic plane is small, implying a near-maximal annual modulation inthe bulk velocity. Along with this paper, we publicly release our simulationdata, comprising more than 100 simulations for six different neutrino masses.

Where shadows lie: reconstruction of anisotropies in the neutrino sky