{"work":{"id":"c4be8009-c515-47bb-8944-6cf94a13480e","openalex_id":null,"doi":null,"arxiv_id":"1602.03840","raw_key":null,"title":"Properties of the Binary Black Hole Merger GW150914","authors":null,"authors_text":"B","year":2016,"venue":"gr-qc","abstract":"On September 14, 2015, the Laser Interferometer Gravitational-wave Observatory (LIGO) detected a gravitational-wave transient (GW150914); we characterize the properties of the source and its parameters. The data around the time of the event were analyzed coherently across the LIGO network using a suite of accurate waveform models that describe gravitational waves from a compact binary system in general relativity. GW150914 was produced by a nearly equal mass binary black hole of $36^{+5}_{-4} M_\\odot$ and $29^{+4}_{-4} M_\\odot$; for each parameter we report the median value and the range of the 90% credible interval. The dimensionless spin magnitude of the more massive black hole is bound to be $<0.7$ (at 90% probability). The luminosity distance to the source is $410^{+160}_{-180}$ Mpc, corresponding to a redshift $0.09^{+0.03}_{-0.04}$ assuming standard cosmology. The source location is constrained to an annulus section of $610$ deg$^2$, primarily in the southern hemisphere. The binary merges into a black hole of $62^{+4}_{-4} M_\\odot$ and spin $0.67^{+0.05}_{-0.07}$. This black hole is significantly more massive than any other inferred from electromagnetic observations in the stellar-mass regime.","external_url":"https://arxiv.org/abs/1602.03840","cited_by_count":null,"metadata_source":"pith","metadata_fetched_at":"2026-07-04T11:09:47.018685+00:00","pith_arxiv_id":"1602.03840","created_at":"2026-05-10T12:40:23.785693+00:00","updated_at":"2026-07-04T11:09:47.018685+00:00","title_quality_ok":true,"display_title":"Properties of the Binary Black Hole Merger GW150914","render_title":"Properties of the Binary Black Hole Merger GW150914"},"hub":{"state":{"work_id":"c4be8009-c515-47bb-8944-6cf94a13480e","tier":"hub","tier_reason":"10+ Pith inbound or 1,000+ external citations","pith_inbound_count":29,"external_cited_by_count":null,"distinct_field_count":6,"first_pith_cited_at":"2019-05-02T17:35:14+00:00","last_pith_cited_at":"2026-07-01T11:40:09+00:00","author_build_status":"not_needed","summary_status":"needed","contexts_status":"needed","graph_status":"needed","ask_index_status":"not_needed","reader_status":"not_needed","recognition_status":"not_needed","updated_at":"2026-08-21T06:19:37.628628+00:00","tier_text":"hub"},"tier":"hub","role_counts":[{"context_role":"background","n":12}],"polarity_counts":[{"context_polarity":"background","n":12}],"runs":{},"summary":{},"graph":{},"authors":[]}}