{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:XPTFUYVAJDTRYQIOEYDHAIAR2J","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"2002eaf5299237daa68e20313d20c7ffdd25f962da41268ac75099019923b0d8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-11-29T23:15:15Z","title_canon_sha256":"fbaa70296509e70a69167243967477b6dc81589b563f3796e6723b04c6ff46cd"},"schema_version":"1.0","source":{"id":"1711.11146","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.11146","created_at":"2026-05-18T00:26:23Z"},{"alias_kind":"arxiv_version","alias_value":"1711.11146v1","created_at":"2026-05-18T00:26:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.11146","created_at":"2026-05-18T00:26:23Z"},{"alias_kind":"pith_short_12","alias_value":"XPTFUYVAJDTR","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_16","alias_value":"XPTFUYVAJDTRYQIO","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_8","alias_value":"XPTFUYVA","created_at":"2026-05-18T12:31:56Z"}],"graph_snapshots":[{"event_id":"sha256:486880fce3907cd1331dc133280d94cfd51578781437bc981890dcb9e82ff988","target":"graph","created_at":"2026-05-18T00:26:23Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We present a radio continuum and linear polarization study of the Galactic supernova remnant G57.2+0.8, which may host the recently discovered magnetar SGR1935+2154. The radio SNR shows the typical radio continuum spectrum of a mature supernova remnant with a spectral index of $\\alpha = -0.55 \\pm 0.02$ and moderate polarized intensity. Magnetic field vectors indicate a tangential magnetic field, expected for an evolved SNR, in one part of the SNR and a radial magnetic field in the other. The latter can be explained by an overlapping arc-like feature, perhaps a pulsar wind nebula, emanating fro","authors_text":"B. Gaensler, R. Kothes, W. Reich, X. Sun","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-11-29T23:15:15Z","title":"Radio continuum and polarization study of SNR G57.2+0.8 associated with magnetar SGR1935+2154"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.11146","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:d3f5e145dbdb8da3796224e0412e865c974fa65fa907cf638210ff747b0b0df7","target":"record","created_at":"2026-05-18T00:26:23Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"2002eaf5299237daa68e20313d20c7ffdd25f962da41268ac75099019923b0d8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-11-29T23:15:15Z","title_canon_sha256":"fbaa70296509e70a69167243967477b6dc81589b563f3796e6723b04c6ff46cd"},"schema_version":"1.0","source":{"id":"1711.11146","kind":"arxiv","version":1}},"canonical_sha256":"bbe65a62a048e71c410e2606702011d2714c1175fdcc9cc035a6fcc92d8072d3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bbe65a62a048e71c410e2606702011d2714c1175fdcc9cc035a6fcc92d8072d3","first_computed_at":"2026-05-18T00:26:23.522234Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:26:23.522234Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FStpeWDcS7gQgBam9+OhaeiH8D2/cc/KAXRL+Bmm+iey3Q50W499AbQhuGuefy/H51jyD3Q4xpWzOylsnCp2Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:26:23.522894Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.11146","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d3f5e145dbdb8da3796224e0412e865c974fa65fa907cf638210ff747b0b0df7","sha256:486880fce3907cd1331dc133280d94cfd51578781437bc981890dcb9e82ff988"],"state_sha256":"787974d82aa7b86c9cfad716a3a542d9c9ad7e1760b013d6a0f802c6607bd8ce"}