{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"ce0d573368da21d406a59c7d863ad7079d910809268e860f96f95eeb1b9be07e","created":"2026-10-15T23:43:22Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["c38e12c7a3a7091aafd36dd21b8882f9f0d3a85f50ec6aa3351376bf76e103f5","ce59fb6cd812fc05906d0c60a71c75ea22bc686bcf38e7c3ef7010834d98ee7b"],"salt":"fea819321a238cbdb1a96022ba6a3e256ff22776afc4cef46f039c1059075b0f","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"mechanism","assisted_by":[],"external_id":"astro.high-energy-neutrino-sources.seyfert-coronae","kind":"phenomenon","literature_status":"open","n":"2","parents":[],"plain":"The nearby active galaxy NGC 1068 emits far more energy in neutrinos than in gamma rays, which suggests the particles are made in a dense, hot region next to its black hole that absorbs the gamma rays.","posed_since":"2022","precise":"For NGC 1068 (neutrino luminosity $\\sim 3 \\times 10^{42}\\ \\mathrm{erg}/\\mathrm{s}$ at 1.5-15 TeV, with a GeV-TeV gamma-ray flux far lower), determine where and how protons are accelerated to $\\sim 10^{14}\\ \\mathrm{eV}$ within $\\sim 10\\ \\text{to}\\ 100$ gravitational radii of the black hole (turbulent acceleration, magnetic reconnection, accretion shocks), and whether the model predicts how neutrino luminosity scales with intrinsic X-ray luminosity across Seyferts. Answer: a model giving $L_{\\nu}/L_{X}$ and the spectral shape, tested against the Seyfert sample.","problem_ref":"c38e12c7a3a7091aafd36dd21b8882f9f0d3a85f50ec6aa3351376bf76e103f5","references":"","settled_by":"Detection of neutrinos from several further Seyferts with fluxes matching the predicted $L_{\\nu}/L_{\\mathrm{X}}$ scaling, and MeV gamma-ray observations of the cascaded emission.","status_note":"","title":"How do Seyfert coronae make neutrinos while hiding gamma rays?","topic_ref":null},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"c030e34f00bbe7a6cedcdae859f2b8c4147db2af6d8265734ab9e5e3cb455c61","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"d37f1de1e9d063afea3c7a033c5aeff734c57b283d7907e757ca8a7673f140e4","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"UVm-Svt8hHmv_ZjoO4zziXUHYPbJzfbO5i8zWPaNmS1r4snejWv0WgaTFd3x_w-wOAAnDqUafonGYJ7ASoUiBA"},"schema":"pubphys.envelope/1"},"record_hash":"c030e34f00bbe7a6cedcdae859f2b8c4147db2af6d8265734ab9e5e3cb455c61","leaf_index":2376}