{ "id": "1610.01419", "version": "v1", "published": "2016-10-05T13:52:32.000Z", "updated": "2016-10-05T13:52:32.000Z", "title": "Low-Γ jets from Compact Binary Mergers as Candidate Electromagnetic Counterparts to Gravitational Wave Sources", "authors": [ "Gavin P Lamb", "Shiho Kobayashi" ], "comment": "4 pages, 2 figures. Submitted to Proceedings of IAU Symposium 324 (New Frontiers in Black Hole Astrophysics)", "categories": [ "astro-ph.HE" ], "abstract": "Compact binary mergers, with neutron stars or neutron star and black-hole components, are thought to produce various electromagnetic counterparts: short gamma-ray bursts (GRBs) from ultra-relativistic jets followed by broadband afterglow; semi-isotropic kilonova from radioactive decay of r-process elements; and late time radio flares; etc. If the jets from such mergers follow a similar power-law distribution of Lorentz factors as other astrophysical jets then the population of merger jets will be dominated by low-{\\Gamma} values. The prompt gamma-rays associated with short GRBs would be suppressed for a low-{\\Gamma} jet and the jet energy will be released as X-ray/optical/radio transients when a shock forms in the ambient medium. Using Monte Carlo simulations, we study the properties of such transients as candidate electromagnetic counterparts to gravitational wave sources detectable by LIGO/Virgo. Approximately 78% of merger-jets result in failed GRB with optical peaks 14-22 magnitude and an all-sky rate of 2-3 per year.", "revisions": [ { "version": "v1", "updated": "2016-10-05T13:52:32.000Z" } ], "analyses": { "keywords": [ "candidate electromagnetic counterparts", "gravitational wave sources", "compact binary mergers", "late time radio flares", "neutron star" ], "note": { "typesetting": "TeX", "pages": 4, "language": "en", "license": "arXiv", "status": "editable" } } }