{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:ZJRYHYBZ424OKBENXYK7WS6JI2","short_pith_number":"pith:ZJRYHYBZ","canonical_record":{"source":{"id":"1102.4592","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-02-22T19:41:38Z","cross_cats_sorted":[],"title_canon_sha256":"d5dfde136ea5efac115ea9b37f546969932a5565a1ae9e7827caef23ca50c6d4","abstract_canon_sha256":"9b2d32b6edf56d7d237d2e51f492aa26fd1e6acb89ccfccaec96c55384e38476"},"schema_version":"1.0"},"canonical_sha256":"ca6383e039e6b8e5048dbe15fb4bc946bf681cc8e0a5694a3b87718dbe6cb105","source":{"kind":"arxiv","id":"1102.4592","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1102.4592","created_at":"2026-05-18T02:03:06Z"},{"alias_kind":"arxiv_version","alias_value":"1102.4592v1","created_at":"2026-05-18T02:03:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.4592","created_at":"2026-05-18T02:03:06Z"},{"alias_kind":"pith_short_12","alias_value":"ZJRYHYBZ424O","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"ZJRYHYBZ424OKBEN","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"ZJRYHYBZ","created_at":"2026-05-18T12:26:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:ZJRYHYBZ424OKBENXYK7WS6JI2","target":"record","payload":{"canonical_record":{"source":{"id":"1102.4592","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-02-22T19:41:38Z","cross_cats_sorted":[],"title_canon_sha256":"d5dfde136ea5efac115ea9b37f546969932a5565a1ae9e7827caef23ca50c6d4","abstract_canon_sha256":"9b2d32b6edf56d7d237d2e51f492aa26fd1e6acb89ccfccaec96c55384e38476"},"schema_version":"1.0"},"canonical_sha256":"ca6383e039e6b8e5048dbe15fb4bc946bf681cc8e0a5694a3b87718dbe6cb105","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:06.364456Z","signature_b64":"phvcTdJuI1zk+9bU1UnRnPX4+jpjA4ybisPU9RQlwBK2SVmqIWQrwIE1KECM2uF8nfuVZVwbONOmNfNiGDF3DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ca6383e039e6b8e5048dbe15fb4bc946bf681cc8e0a5694a3b87718dbe6cb105","last_reissued_at":"2026-05-18T02:03:06.363872Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:06.363872Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1102.4592","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":"2026-05-18T02:03:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ePYB6/vuRUrJkN+aCzXDfbr4YDpKqe9L2w8oCfCJM6PI9YKB5LSFF1LOZIBVyErL4lXROmIfAk7jXbhnM4d/Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:19:46.186936Z"},"content_sha256":"f17cd1b939f6a457b1d2526060d4e4276224bfc72a6fa25277a0e89653b836ce","schema_version":"1.0","event_id":"sha256:f17cd1b939f6a457b1d2526060d4e4276224bfc72a6fa25277a0e89653b836ce"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:ZJRYHYBZ424OKBENXYK7WS6JI2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"NGC 2207/IC 2163: A Grazing Encounter with Large Scale Shocks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Bruce G. Elmegreen, Curtis Struck, Debra M. Elmegreen, Dirk Grupe, Elias Brinks, Michele Kaufman","submitted_at":"2011-02-22T19:41:38Z","abstract_excerpt":"Radio continuum, Spitzer infrared, optical and XMM-Newton X-ray and UVM2 observations are used to study large-scale shock fronts, young star complexes, and the galactic nuclei in the interacting galaxies NGC 2207/IC 2163. There are two types of large-scale shock fronts in this galaxy pair. The shock front along the rim of the ocular oval in IC 2163 has produced vigorous star formation in a dusty environment. In the outer part of the companion side of NGC 2207, a large-scale front attributed to disk or halo scraping is particularly bright in the radio continuum but not in any tracers of recent "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.4592","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":"2026-05-18T02:03:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"u69cUbz6wGG5kT7ZPc28TJjBRQact0jJVN7w1yl8GKVYnjQDW4hFYi1n/O9rq3I45TdinFFfeRFsXum/WDpbCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:19:46.187653Z"},"content_sha256":"2e286a28f843d923cbf9abdcd5c622f3f96f185349357d95053e82092f0155a4","schema_version":"1.0","event_id":"sha256:2e286a28f843d923cbf9abdcd5c622f3f96f185349357d95053e82092f0155a4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZJRYHYBZ424OKBENXYK7WS6JI2/bundle.json","state_url":"https://pith.science/pith/ZJRYHYBZ424OKBENXYK7WS6JI2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZJRYHYBZ424OKBENXYK7WS6JI2/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":"2026-05-25T21:19:46Z","links":{"resolver":"https://pith.science/pith/ZJRYHYBZ424OKBENXYK7WS6JI2","bundle":"https://pith.science/pith/ZJRYHYBZ424OKBENXYK7WS6JI2/bundle.json","state":"https://pith.science/pith/ZJRYHYBZ424OKBENXYK7WS6JI2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZJRYHYBZ424OKBENXYK7WS6JI2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:ZJRYHYBZ424OKBENXYK7WS6JI2","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":"9b2d32b6edf56d7d237d2e51f492aa26fd1e6acb89ccfccaec96c55384e38476","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-02-22T19:41:38Z","title_canon_sha256":"d5dfde136ea5efac115ea9b37f546969932a5565a1ae9e7827caef23ca50c6d4"},"schema_version":"1.0","source":{"id":"1102.4592","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1102.4592","created_at":"2026-05-18T02:03:06Z"},{"alias_kind":"arxiv_version","alias_value":"1102.4592v1","created_at":"2026-05-18T02:03:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.4592","created_at":"2026-05-18T02:03:06Z"},{"alias_kind":"pith_short_12","alias_value":"ZJRYHYBZ424O","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"ZJRYHYBZ424OKBEN","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"ZJRYHYBZ","created_at":"2026-05-18T12:26:47Z"}],"graph_snapshots":[{"event_id":"sha256:2e286a28f843d923cbf9abdcd5c622f3f96f185349357d95053e82092f0155a4","target":"graph","created_at":"2026-05-18T02:03:06Z","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":"Radio continuum, Spitzer infrared, optical and XMM-Newton X-ray and UVM2 observations are used to study large-scale shock fronts, young star complexes, and the galactic nuclei in the interacting galaxies NGC 2207/IC 2163. There are two types of large-scale shock fronts in this galaxy pair. The shock front along the rim of the ocular oval in IC 2163 has produced vigorous star formation in a dusty environment. In the outer part of the companion side of NGC 2207, a large-scale front attributed to disk or halo scraping is particularly bright in the radio continuum but not in any tracers of recent ","authors_text":"Bruce G. Elmegreen, Curtis Struck, Debra M. Elmegreen, Dirk Grupe, Elias Brinks, Michele Kaufman","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-02-22T19:41:38Z","title":"NGC 2207/IC 2163: A Grazing Encounter with Large Scale Shocks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.4592","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:f17cd1b939f6a457b1d2526060d4e4276224bfc72a6fa25277a0e89653b836ce","target":"record","created_at":"2026-05-18T02:03:06Z","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":"9b2d32b6edf56d7d237d2e51f492aa26fd1e6acb89ccfccaec96c55384e38476","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-02-22T19:41:38Z","title_canon_sha256":"d5dfde136ea5efac115ea9b37f546969932a5565a1ae9e7827caef23ca50c6d4"},"schema_version":"1.0","source":{"id":"1102.4592","kind":"arxiv","version":1}},"canonical_sha256":"ca6383e039e6b8e5048dbe15fb4bc946bf681cc8e0a5694a3b87718dbe6cb105","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ca6383e039e6b8e5048dbe15fb4bc946bf681cc8e0a5694a3b87718dbe6cb105","first_computed_at":"2026-05-18T02:03:06.363872Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:06.363872Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"phvcTdJuI1zk+9bU1UnRnPX4+jpjA4ybisPU9RQlwBK2SVmqIWQrwIE1KECM2uF8nfuVZVwbONOmNfNiGDF3DA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:06.364456Z","signed_message":"canonical_sha256_bytes"},"source_id":"1102.4592","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f17cd1b939f6a457b1d2526060d4e4276224bfc72a6fa25277a0e89653b836ce","sha256:2e286a28f843d923cbf9abdcd5c622f3f96f185349357d95053e82092f0155a4"],"state_sha256":"a28d9e42942f367673530572e8e8accbe01d38c7e0ea85dc74c9674c7ed9e401"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K+5M9XPyxmJMkXMZzLYQ+SEzrrkbPEA/VOdNmGFT4lvFgKXuJiIa3y2l+oebc+EYDufR2i7qcVEMT2bkkuWSDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T21:19:46.191674Z","bundle_sha256":"21c22cc0f3622cd5619bb70056fbd7a6b62f120135cb0d5d367d2c0eaaf894a7"}}