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

This paper shows that accretion of positronium plasma between 0.01s-14s afterthe Big Bang could have created small black holes contributing at least 1% ofpresent-day dark matter, with uncertainties ranging from 10% or more. Generalrelativistic magnetohydrodynamic (GRMHD) simulations newly adapted to the earlyUniverse confirm that accretion is due to magneto-rotational instability (MRI)in a rotating plasma. By contrast with Bondi accretion producing primordialmasses above solar, MRI could produce masses 10^15-18g observable by theirHawking radiation contributing to background gamma rays.

Accreting Primordial Black Holes: Dark Matter Constituents