{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:BY2PYWSIMXUYOF5IYQ757KSZY4","short_pith_number":"pith:BY2PYWSI","schema_version":"1.0","canonical_sha256":"0e34fc5a4865e98717a8c43fdfaa59c703dc844b55634ff734497d6bb5622086","source":{"kind":"arxiv","id":"1805.10447","version":2},"attestation_state":"computed","paper":{"title":"Expansion of a mildly relativistic hot pair cloud into an electron-proton plasma","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A Alejo, G Sarri, ME Dieckmann","submitted_at":"2018-05-26T08:34:55Z","abstract_excerpt":"The expansion of a charge-neutral cloud of electrons and positrons with the temperature 1 MeV into an unmagnetized ambient plasma is examined with a 2D particle-in-cell (PIC) simulation. The pair outflow drives solitary waves in the ambient protons. Their bipolar electric fields attract electrons of the outflowing pair cloud and repel positrons. These fields can reflect some of the protons thereby accelerating them to almost an MeV. Ion acoustic solitary waves are thus an efficient means to couple energy from the pair cloud to protons. The scattering of the electrons and positrons by the elect"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1805.10447","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-05-26T08:34:55Z","cross_cats_sorted":[],"title_canon_sha256":"2c57acf21a8e3e50ec8eece26a81155a8ea9c5dac206226bffb76fd345a06a78","abstract_canon_sha256":"594107d2c6b3b19b920f0c4ac97f04d8572ee2b611f324429fe71c05446ad564"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:09:24.645632Z","signature_b64":"FdoymmhCVQ3ZYc4wr5+sLjW0kwhrO/D1CDMmsP+VXYY180Cgx3M+fRlxhrNG8oPfo0VTlYVDYfdbh+VVrP88BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0e34fc5a4865e98717a8c43fdfaa59c703dc844b55634ff734497d6bb5622086","last_reissued_at":"2026-05-18T00:09:24.645154Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:09:24.645154Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Expansion of a mildly relativistic hot pair cloud into an electron-proton plasma","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A Alejo, G Sarri, ME Dieckmann","submitted_at":"2018-05-26T08:34:55Z","abstract_excerpt":"The expansion of a charge-neutral cloud of electrons and positrons with the temperature 1 MeV into an unmagnetized ambient plasma is examined with a 2D particle-in-cell (PIC) simulation. The pair outflow drives solitary waves in the ambient protons. Their bipolar electric fields attract electrons of the outflowing pair cloud and repel positrons. These fields can reflect some of the protons thereby accelerating them to almost an MeV. Ion acoustic solitary waves are thus an efficient means to couple energy from the pair cloud to protons. The scattering of the electrons and positrons by the elect"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.10447","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1805.10447","created_at":"2026-05-18T00:09:24.645223+00:00"},{"alias_kind":"arxiv_version","alias_value":"1805.10447v2","created_at":"2026-05-18T00:09:24.645223+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.10447","created_at":"2026-05-18T00:09:24.645223+00:00"},{"alias_kind":"pith_short_12","alias_value":"BY2PYWSIMXUY","created_at":"2026-05-18T12:32:16.446611+00:00"},{"alias_kind":"pith_short_16","alias_value":"BY2PYWSIMXUYOF5I","created_at":"2026-05-18T12:32:16.446611+00:00"},{"alias_kind":"pith_short_8","alias_value":"BY2PYWSI","created_at":"2026-05-18T12:32:16.446611+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/BY2PYWSIMXUYOF5IYQ757KSZY4","json":"https://pith.science/pith/BY2PYWSIMXUYOF5IYQ757KSZY4.json","graph_json":"https://pith.science/api/pith-number/BY2PYWSIMXUYOF5IYQ757KSZY4/graph.json","events_json":"https://pith.science/api/pith-number/BY2PYWSIMXUYOF5IYQ757KSZY4/events.json","paper":"https://pith.science/paper/BY2PYWSI"},"agent_actions":{"view_html":"https://pith.science/pith/BY2PYWSIMXUYOF5IYQ757KSZY4","download_json":"https://pith.science/pith/BY2PYWSIMXUYOF5IYQ757KSZY4.json","view_paper":"https://pith.science/paper/BY2PYWSI","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1805.10447&json=true","fetch_graph":"https://pith.science/api/pith-number/BY2PYWSIMXUYOF5IYQ757KSZY4/graph.json","fetch_events":"https://pith.science/api/pith-number/BY2PYWSIMXUYOF5IYQ757KSZY4/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/BY2PYWSIMXUYOF5IYQ757KSZY4/action/timestamp_anchor","attest_storage":"https://pith.science/pith/BY2PYWSIMXUYOF5IYQ757KSZY4/action/storage_attestation","attest_author":"https://pith.science/pith/BY2PYWSIMXUYOF5IYQ757KSZY4/action/author_attestation","sign_citation":"https://pith.science/pith/BY2PYWSIMXUYOF5IYQ757KSZY4/action/citation_signature","submit_replication":"https://pith.science/pith/BY2PYWSIMXUYOF5IYQ757KSZY4/action/replication_record"}},"created_at":"2026-05-18T00:09:24.645223+00:00","updated_at":"2026-05-18T00:09:24.645223+00:00"}