{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:MPCIXUZ2HUVNXUTZX5KPO5VX3M","short_pith_number":"pith:MPCIXUZ2","canonical_record":{"source":{"id":"1109.6443","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-09-29T09:01:16Z","cross_cats_sorted":[],"title_canon_sha256":"e655e36ff3ecb63c1875d12947c48be9a57b35430c34204dbb403de661c3ecd6","abstract_canon_sha256":"d6a6fa3a99263be90e7855267b6c139c4645b9768b762cc1994fdb89bce1c6d6"},"schema_version":"1.0"},"canonical_sha256":"63c48bd33a3d2adbd279bf54f776b7db397aa258f29aee3559d5d9412999d91e","source":{"kind":"arxiv","id":"1109.6443","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.6443","created_at":"2026-05-18T00:24:45Z"},{"alias_kind":"arxiv_version","alias_value":"1109.6443v1","created_at":"2026-05-18T00:24:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.6443","created_at":"2026-05-18T00:24:45Z"},{"alias_kind":"pith_short_12","alias_value":"MPCIXUZ2HUVN","created_at":"2026-05-18T12:26:34Z"},{"alias_kind":"pith_short_16","alias_value":"MPCIXUZ2HUVNXUTZ","created_at":"2026-05-18T12:26:34Z"},{"alias_kind":"pith_short_8","alias_value":"MPCIXUZ2","created_at":"2026-05-18T12:26:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:MPCIXUZ2HUVNXUTZX5KPO5VX3M","target":"record","payload":{"canonical_record":{"source":{"id":"1109.6443","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-09-29T09:01:16Z","cross_cats_sorted":[],"title_canon_sha256":"e655e36ff3ecb63c1875d12947c48be9a57b35430c34204dbb403de661c3ecd6","abstract_canon_sha256":"d6a6fa3a99263be90e7855267b6c139c4645b9768b762cc1994fdb89bce1c6d6"},"schema_version":"1.0"},"canonical_sha256":"63c48bd33a3d2adbd279bf54f776b7db397aa258f29aee3559d5d9412999d91e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:24:45.738645Z","signature_b64":"eHsJOi7jtTxXQjqDDQYjseGnvoxA37Aqo5oPrsZza5w10GJo2Z18vrXafjWFrO1ySyZ7qAbH3Qzyi41EfJw2AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"63c48bd33a3d2adbd279bf54f776b7db397aa258f29aee3559d5d9412999d91e","last_reissued_at":"2026-05-18T00:24:45.737966Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:24:45.737966Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1109.6443","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:24:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GJmF+l0qwS2fGbbnKtugHYsWqv2SNCCkeogjd7MZ7RfwtRDfOrgpQ1qkfU94TnDOgCUmMLhIQLJR9ncEK1v3DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T14:37:41.389660Z"},"content_sha256":"49f116776cf436f8d677a80b8c918c1b6ae0df43b0c74288521dfe9d1139d85e","schema_version":"1.0","event_id":"sha256:49f116776cf436f8d677a80b8c918c1b6ae0df43b0c74288521dfe9d1139d85e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:MPCIXUZ2HUVNXUTZX5KPO5VX3M","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Resolution of the Compact Radio Continuum Sources in Arp220","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Carol J. Lonsdale, Colin J. Lonsdale, Fabien Batejat, John E. Conway, Philip J. Diamond, Rodrigo Parra, Rossa Hurley","submitted_at":"2011-09-29T09:01:16Z","abstract_excerpt":"We present 2 cm and 3.6 cm wavelength very long baseline interferometry images of the compact radio continuum sources in the nearby ultra-luminous infrared galaxy Arp220. Based on their radio spectra and variability properties, we confirm these sources to be a mixture of supernovae (SNe) and supernova remnants (SNRs). Of the 17 detected sources we resolve 7 at both wavelengths. The SNe generally only have upper size limits. In contrast all the SNRs are resolved with diameters {\\geq} 0.27 pc. This size limit is consistent with them having just entered their Sedov phase while embedded in an inte"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.6443","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:24:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aX+J+5Rj6e0oU5oBzGk/OW/pWEqz5KUvCTgsKNu0ctKXiWvURVxMoPaynGaLOSesTy51NI48C9xOS0NUKNKEAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T14:37:41.389998Z"},"content_sha256":"6e37b5b403fedabaf20ea8ae2b64de58687ddf456695f532bd12edd4b124873e","schema_version":"1.0","event_id":"sha256:6e37b5b403fedabaf20ea8ae2b64de58687ddf456695f532bd12edd4b124873e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MPCIXUZ2HUVNXUTZX5KPO5VX3M/bundle.json","state_url":"https://pith.science/pith/MPCIXUZ2HUVNXUTZX5KPO5VX3M/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MPCIXUZ2HUVNXUTZX5KPO5VX3M/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-01T14:37:41Z","links":{"resolver":"https://pith.science/pith/MPCIXUZ2HUVNXUTZX5KPO5VX3M","bundle":"https://pith.science/pith/MPCIXUZ2HUVNXUTZX5KPO5VX3M/bundle.json","state":"https://pith.science/pith/MPCIXUZ2HUVNXUTZX5KPO5VX3M/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MPCIXUZ2HUVNXUTZX5KPO5VX3M/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:MPCIXUZ2HUVNXUTZX5KPO5VX3M","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":"d6a6fa3a99263be90e7855267b6c139c4645b9768b762cc1994fdb89bce1c6d6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-09-29T09:01:16Z","title_canon_sha256":"e655e36ff3ecb63c1875d12947c48be9a57b35430c34204dbb403de661c3ecd6"},"schema_version":"1.0","source":{"id":"1109.6443","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.6443","created_at":"2026-05-18T00:24:45Z"},{"alias_kind":"arxiv_version","alias_value":"1109.6443v1","created_at":"2026-05-18T00:24:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.6443","created_at":"2026-05-18T00:24:45Z"},{"alias_kind":"pith_short_12","alias_value":"MPCIXUZ2HUVN","created_at":"2026-05-18T12:26:34Z"},{"alias_kind":"pith_short_16","alias_value":"MPCIXUZ2HUVNXUTZ","created_at":"2026-05-18T12:26:34Z"},{"alias_kind":"pith_short_8","alias_value":"MPCIXUZ2","created_at":"2026-05-18T12:26:34Z"}],"graph_snapshots":[{"event_id":"sha256:6e37b5b403fedabaf20ea8ae2b64de58687ddf456695f532bd12edd4b124873e","target":"graph","created_at":"2026-05-18T00:24:45Z","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 2 cm and 3.6 cm wavelength very long baseline interferometry images of the compact radio continuum sources in the nearby ultra-luminous infrared galaxy Arp220. Based on their radio spectra and variability properties, we confirm these sources to be a mixture of supernovae (SNe) and supernova remnants (SNRs). Of the 17 detected sources we resolve 7 at both wavelengths. The SNe generally only have upper size limits. In contrast all the SNRs are resolved with diameters {\\geq} 0.27 pc. This size limit is consistent with them having just entered their Sedov phase while embedded in an inte","authors_text":"Carol J. Lonsdale, Colin J. Lonsdale, Fabien Batejat, John E. Conway, Philip J. Diamond, Rodrigo Parra, Rossa Hurley","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-09-29T09:01:16Z","title":"Resolution of the Compact Radio Continuum Sources in Arp220"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.6443","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":"sha256:49f116776cf436f8d677a80b8c918c1b6ae0df43b0c74288521dfe9d1139d85e","target":"record","created_at":"2026-05-18T00:24:45Z","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":"d6a6fa3a99263be90e7855267b6c139c4645b9768b762cc1994fdb89bce1c6d6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-09-29T09:01:16Z","title_canon_sha256":"e655e36ff3ecb63c1875d12947c48be9a57b35430c34204dbb403de661c3ecd6"},"schema_version":"1.0","source":{"id":"1109.6443","kind":"arxiv","version":1}},"canonical_sha256":"63c48bd33a3d2adbd279bf54f776b7db397aa258f29aee3559d5d9412999d91e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"63c48bd33a3d2adbd279bf54f776b7db397aa258f29aee3559d5d9412999d91e","first_computed_at":"2026-05-18T00:24:45.737966Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:24:45.737966Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eHsJOi7jtTxXQjqDDQYjseGnvoxA37Aqo5oPrsZza5w10GJo2Z18vrXafjWFrO1ySyZ7qAbH3Qzyi41EfJw2AA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:24:45.738645Z","signed_message":"canonical_sha256_bytes"},"source_id":"1109.6443","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:49f116776cf436f8d677a80b8c918c1b6ae0df43b0c74288521dfe9d1139d85e","sha256:6e37b5b403fedabaf20ea8ae2b64de58687ddf456695f532bd12edd4b124873e"],"state_sha256":"b4db65975fcddd084e3b99dc3508d95a7ed4730f7faff85525ac1a240db97c6d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nsaoei6SoBBJaNnCw3QqAzhzaGyc2q+kdgv1Hx10nNBznQYlTwEOi1lXvi/GPCgL/Eb5cAi+vTq4+KdDAAY2Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T14:37:41.391870Z","bundle_sha256":"15d46bb839259f13388b195f1d0329d5c0cb46d1303c9fb01c998a4767b93bcf"}}