{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:C4LVBAYKWDIU2UMIGMOG2XI67P","short_pith_number":"pith:C4LVBAYK","schema_version":"1.0","canonical_sha256":"171750830ab0d14d5188331c6d5d1efbdcbdd1d4c9eb7df867c15d2f8f90a560","source":{"kind":"arxiv","id":"1711.09067","version":1},"attestation_state":"computed","paper":{"title":"Proper Motion of the High-Velocity Pulsar in SNR MSH 15-56","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Christopher Kolb, Daniel Castro, Joseph Gelfand, Patrick Slane, Paul P. Plucinsky, Tea Temim","submitted_at":"2017-11-24T18:20:57Z","abstract_excerpt":"We present a measurement of the proper motion of the presumed pulsar in the evolved composite supernova remnant (SNR) MSH 15-56 whose pulsar wind nebula (PWN) has been disrupted by the supernova (SN) reverse shock. Using Chandra X-ray observations acquired over a baseline of 15 years, we measure a pulsar velocity of 720 (+290/-215) km/s and a direction of motion of 14 +/- 22 degrees west of south. We use this measurement to constrain a hydrodynamical model for the evolution of this system and find that its morphology is well-described by an SNR expanding in an ambient density gradient that inc"},"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":"1711.09067","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-11-24T18:20:57Z","cross_cats_sorted":[],"title_canon_sha256":"280e5f5c4c8f8989a205ea946be373b1ad1456d5367b2258c32a3d409368076b","abstract_canon_sha256":"72d65088abe070e5219f8a9859d38395e082040e82dc7de411a82a2f96b42821"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:27:17.643976Z","signature_b64":"HsVMsB7T4u8IBun0xIfRMvACQWWbltChB2oIpyBSUVTfp4Y2JSX85PkT/q+Ofegvk2JgvGmaKYody7k7SRJBAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"171750830ab0d14d5188331c6d5d1efbdcbdd1d4c9eb7df867c15d2f8f90a560","last_reissued_at":"2026-05-18T00:27:17.643584Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:27:17.643584Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Proper Motion of the High-Velocity Pulsar in SNR MSH 15-56","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Christopher Kolb, Daniel Castro, Joseph Gelfand, Patrick Slane, Paul P. Plucinsky, Tea Temim","submitted_at":"2017-11-24T18:20:57Z","abstract_excerpt":"We present a measurement of the proper motion of the presumed pulsar in the evolved composite supernova remnant (SNR) MSH 15-56 whose pulsar wind nebula (PWN) has been disrupted by the supernova (SN) reverse shock. Using Chandra X-ray observations acquired over a baseline of 15 years, we measure a pulsar velocity of 720 (+290/-215) km/s and a direction of motion of 14 +/- 22 degrees west of south. We use this measurement to constrain a hydrodynamical model for the evolution of this system and find that its morphology is well-described by an SNR expanding in an ambient density gradient that inc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.09067","kind":"arxiv","version":1},"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":"1711.09067","created_at":"2026-05-18T00:27:17.643649+00:00"},{"alias_kind":"arxiv_version","alias_value":"1711.09067v1","created_at":"2026-05-18T00:27:17.643649+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.09067","created_at":"2026-05-18T00:27:17.643649+00:00"},{"alias_kind":"pith_short_12","alias_value":"C4LVBAYKWDIU","created_at":"2026-05-18T12:31:08.081275+00:00"},{"alias_kind":"pith_short_16","alias_value":"C4LVBAYKWDIU2UMI","created_at":"2026-05-18T12:31:08.081275+00:00"},{"alias_kind":"pith_short_8","alias_value":"C4LVBAYK","created_at":"2026-05-18T12:31:08.081275+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/C4LVBAYKWDIU2UMIGMOG2XI67P","json":"https://pith.science/pith/C4LVBAYKWDIU2UMIGMOG2XI67P.json","graph_json":"https://pith.science/api/pith-number/C4LVBAYKWDIU2UMIGMOG2XI67P/graph.json","events_json":"https://pith.science/api/pith-number/C4LVBAYKWDIU2UMIGMOG2XI67P/events.json","paper":"https://pith.science/paper/C4LVBAYK"},"agent_actions":{"view_html":"https://pith.science/pith/C4LVBAYKWDIU2UMIGMOG2XI67P","download_json":"https://pith.science/pith/C4LVBAYKWDIU2UMIGMOG2XI67P.json","view_paper":"https://pith.science/paper/C4LVBAYK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1711.09067&json=true","fetch_graph":"https://pith.science/api/pith-number/C4LVBAYKWDIU2UMIGMOG2XI67P/graph.json","fetch_events":"https://pith.science/api/pith-number/C4LVBAYKWDIU2UMIGMOG2XI67P/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/C4LVBAYKWDIU2UMIGMOG2XI67P/action/timestamp_anchor","attest_storage":"https://pith.science/pith/C4LVBAYKWDIU2UMIGMOG2XI67P/action/storage_attestation","attest_author":"https://pith.science/pith/C4LVBAYKWDIU2UMIGMOG2XI67P/action/author_attestation","sign_citation":"https://pith.science/pith/C4LVBAYKWDIU2UMIGMOG2XI67P/action/citation_signature","submit_replication":"https://pith.science/pith/C4LVBAYKWDIU2UMIGMOG2XI67P/action/replication_record"}},"created_at":"2026-05-18T00:27:17.643649+00:00","updated_at":"2026-05-18T00:27:17.643649+00:00"}