{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.topic/1","content_sha256":"cceab632a08cde4ffd423f508941ca0fb8c5e1e14ee5289b2209709786730276","created":"2026-10-03T07:17:50Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":[],"salt":"9d8af13daee7017062a0245a06a8110f043f8a1678cf4b2deceb3ec39c63dbfa","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"topic"},"content":{"external_id":"astro.grb-engines-jets","field":"astro","n":"1","review_cite":"P. Kumar, B. Zhang, The physics of gamma-ray bursts and relativistic jets, Physics Reports, 2015","review_link":"https://arxiv.org/abs/1410.0679","review_verified":"true","summary":"Gamma-ray bursts are the brightest explosions known: beams of matter moving at over $99.99\\,\\text{percent}$ of light speed, launched when a massive star collapses or two neutron stars merge. What powers the beam and what it is made of are unsettled.","title":"Gamma-ray burst central engines and jets","topic_ref":null,"why":"GRBs test relativistic plasma physics and mark the births of black holes and neutron stars across cosmic time."},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"d34ff2cb4f455ed6abcd7339be502ac934cb4f47f2fd2df51ba89febba9c8dd6","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"6a0bdd5d33d7a7db773cb476091e451e1fb8ebcca54834ec43a0491c73b1db8f","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"v-cb4uJM-lRruIIForZmacufFE7DklQqubTKL-acqmHqiBGe9BxTbkditsyqJZ9OcHtsbyLGVmRBczZUFAEWCQ"},"schema":"pubphys.envelope/1"},"record_hash":"d34ff2cb4f455ed6abcd7339be502ac934cb4f47f2fd2df51ba89febba9c8dd6","leaf_index":40}