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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Mixed fermion-boson stars are stable, horizonless, everywhere regularsolutions of the coupled Einstein-(complex, massive) Klein-Gordon-Euler system.While isolated neutron stars and boson stars are uniquely determined by theircentral energy density, mixed configurations conform an extended parameterspace that depends on the combination of the number of fermions and(ultra-light) bosons. The wider possibilities offered by fermion-boson starscould help explain the tension in the measurements of neutron star masses andradii reported in recent multi-messenger observations and nuclear-physicsexperiments. In this work we construct equilibrium configurations of mixedfermion-boson stars with realistic equations of state for the fermioniccomponent and different percentages of bosonic matter. We show that oursolutions are in excellent agreement with multi-messenger data, includinggravitational-wave events GW170817 and GW190814 and X-ray pulsars PSRJ0030+0451 and PSR J0740+6620, as well as with nuclear physics constraints fromthe PREX-2 experiment.

Can fermion-boson stars reconcile multi-messenger observations of compact stars?