{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"9a358030b618a70df294110a29b27135da3b735f23d010f8393ab52999180da7","created":"2026-10-03T07:17:55Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"e5dc958457466087ae018740cb49cb6c8079dbdf3372be6e5c116dcadbb42979","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"yes-no","assisted_by":[],"external_id":"astro.neutron-star-interiors.crust-entrainment","kind":"well-posed","literature_status":"contested","n":"1","parents":[],"plain":"Glitches need a reservoir of superfluid holding at least about 1.6 percent of the star's spin inertia. Calculations suggest the crust lattice drags on the superfluid neutrons (entrainment), which may leave the crust too small a reservoir.","posed_since":"2012","precise":"Vela's glitch activity requires a pinned superfluid with fractional moment of inertia $I_s/I$ of at least approximately 0.016. Bragg scattering of dripped neutrons off the inner-crust lattice increases the neutron effective mass ($m*/m$ up to about 15 in some layers in band-structure calculations without pairing), which raises the required $I_s/I$ above what the crust provides for typical masses. Compute entrainment with pairing included and decide whether crustal superfluid suffices or core superfluid must participate.","problem_ref":null,"references":"","settled_by":"A band-structure calculation of inner-crust entrainment including neutron pairing, combined with crust thickness from a constrained equation of state.","status_note":"Calculations including pairing have argued that entrainment is weaker than earlier band-structure estimates, reopening the crust-only picture.","title":"Is the crust superfluid enough to power glitches with entrainment included?","topic_ref":"afd1feb0d7ec84994296c83f9c2ecba96e22fc9ddf5d5fa7c0562e1f6f4eb1d4"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"11c9c8145349e7eef8203e660371125d85db0a4a079b8484cba9e64fa89d4aaf","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"bb0a17c856490159aa4e404eb8437000fb8d3b15f0a8a0dad116b47fb4c3c803","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"O_TX_iGWjcEntokMbfFeG7gckrq-dErevrPrRfMwwwb1mpwYzXA4imOD8TUlcNiUqK4_GFGucK--ClGfUrlyDg"},"schema":"pubphys.envelope/1"},"record_hash":"11c9c8145349e7eef8203e660371125d85db0a4a079b8484cba9e64fa89d4aaf","leaf_index":571}