{ "id": "2109.14759", "version": "v2", "published": "2021-09-29T23:22:24.000Z", "updated": "2021-11-05T12:27:45.000Z", "title": "GW200115: a non-spinning black hole -- neutron star merger", "authors": [ "Ilya Mandel", "Rory J. E. Smith" ], "comment": "Minor updates to the version accepted to ApJ Letters", "doi": "10.3847/2041-8213/ac35dd", "categories": [ "astro-ph.HE", "astro-ph.SR", "gr-qc" ], "abstract": "GW200115 was the second merger of a black hole and a neutron star confidently detected through gravitational waves. Inference on the signal allows for a large black hole spin misaligned with the orbital angular momentum, but shows little support for aligned spin values. We show that this is a natural consequence of measuring the parameters of a black hole -- neutron star binary with non-spinning components while assuming the priors used in the LIGO-Virgo-KAGRA analysis. We suggest that, a priori, a non-spinning binary is more consistent with current astrophysical understanding.", "revisions": [ { "version": "v2", "updated": "2021-11-05T12:27:45.000Z" } ], "analyses": { "keywords": [ "neutron star merger", "non-spinning black hole", "large black hole spin", "neutron star binary", "orbital angular momentum" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }