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 Tools annual

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 monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

The next generation gravitational waves (GW) detectors are most sensitive toGW emitted by compact (neutron star/black hole) binary mergers. If one of thoseis a neutron star the merger will also emit electromagnetic radiation via threepossible channels: Gamma-ray bursts and their (possibly orphan) afterglows(Eichler et al. 1989), Li-Paczynski Macronovae (Li & Paczynski 1998) and radioflares (Nakar & Piran 2011). This accompanying electromagnetic radiation isvitally important in confirming the GW detections (Kochanek & Piran 1993). Itcould also reveal a wealth of information regarding the merger and will open awindow towards multi-messenger astronomy. Identifying and characterizing thesecounterparts is therefore of utmost importance. In this work we explore latetime radio flares emitted by the dynamically ejected outflows. We build uponprevious work and consider the effect of the outflow's non-trivial geometry.Using an approximate method we estimate the radio light-curves for severalejected matter distributions obtained in numerical simulations. Our methodprovides an upper limit to the effect of non-sphericity. Together with thespherical estimates the resulting light curves bound the actual signal. We findthat while non-spherical geometries can in principle lead to an enhancedemission, in most cases they result in an increase in the timescale comparedwith a corresponding spherical configuration. This would weaken somewhat thesesignals and might decrease the detection prospects.

Radio Flares of Compact Binary Mergers: the Effect of Non-Trivial Outflow Geometry