{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:HZ7REZ3WVJPNBB4FE2CI6ATVIQ","short_pith_number":"pith:HZ7REZ3W","canonical_record":{"source":{"id":"1805.11522","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-05-29T14:54:28Z","cross_cats_sorted":[],"title_canon_sha256":"af7217df9d4058cc8943bf2ff5247e7322722aa2838811ea77e2a8bca5ce5b50","abstract_canon_sha256":"98000a5625e3b514ec682b3bdf4d0fac12f97e567d2790ee68fc559641c652ca"},"schema_version":"1.0"},"canonical_sha256":"3e7f126776aa5ed0878526848f027544219352c0b53524dcb0b8a55b375f3f85","source":{"kind":"arxiv","id":"1805.11522","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.11522","created_at":"2026-05-18T00:14:42Z"},{"alias_kind":"arxiv_version","alias_value":"1805.11522v1","created_at":"2026-05-18T00:14:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.11522","created_at":"2026-05-18T00:14:42Z"},{"alias_kind":"pith_short_12","alias_value":"HZ7REZ3WVJPN","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_16","alias_value":"HZ7REZ3WVJPNBB4F","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_8","alias_value":"HZ7REZ3W","created_at":"2026-05-18T12:32:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:HZ7REZ3WVJPNBB4FE2CI6ATVIQ","target":"record","payload":{"canonical_record":{"source":{"id":"1805.11522","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-05-29T14:54:28Z","cross_cats_sorted":[],"title_canon_sha256":"af7217df9d4058cc8943bf2ff5247e7322722aa2838811ea77e2a8bca5ce5b50","abstract_canon_sha256":"98000a5625e3b514ec682b3bdf4d0fac12f97e567d2790ee68fc559641c652ca"},"schema_version":"1.0"},"canonical_sha256":"3e7f126776aa5ed0878526848f027544219352c0b53524dcb0b8a55b375f3f85","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:14:42.216322Z","signature_b64":"lzn7z9lzb1/GHndmkXRgr4qbZVgkVAGZ5dpNsXqEkyOr+skxJRbhXPBATw7Cad+TsKNuDbyOJLgwbshktAf9Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3e7f126776aa5ed0878526848f027544219352c0b53524dcb0b8a55b375f3f85","last_reissued_at":"2026-05-18T00:14:42.215736Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:14:42.215736Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.11522","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":"2026-05-18T00:14:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"B6c3j4ujQ0nFtXqD2SoMsUFr/uHaieXuM2Ua3GBa8WblAjOYegGYQY5jFObdn/NTUq+ciJ6lueFpETgj4rztDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T16:38:29.314008Z"},"content_sha256":"fc440d3198c0833daecea5e46e50ecf40e28273cb093317d5dfd6002d752041a","schema_version":"1.0","event_id":"sha256:fc440d3198c0833daecea5e46e50ecf40e28273cb093317d5dfd6002d752041a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:HZ7REZ3WVJPNBB4FE2CI6ATVIQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ancient Pulsar Wind Nebulae as a natural explanation for unidentified gamma-ray sources","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"O. Tibolla, S. Kaufmann","submitted_at":"2018-05-29T14:54:28Z","abstract_excerpt":"A large part of the Galactic sources emitting very high energy (VHE; > 10^{11} eV) gamma-rays are currently still unidentified. The evolution of Pulsar Wind Nebulae (PWNe) plays a crucial role in interpreting these sources. The time-dependent modeling of PWNe has been tested on a sample of well-known young and intermediate age PWNe; and it is currently applied to the full-sample of unidentified VHE Galactic sources. The consequences of this interpretation go far beyond the interpretation of \"dark sources\" (i.e. VHE gamma-ray sources without lower energies, radio or X-ray, counterparts): e.g. t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.11522","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":"2026-05-18T00:14:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5j1zRE5A2MclGtNQ+YLI/v5s9sZsepOXfYIE1gNoQiZVegvmfmmUVsk7MiY8b6uOAcML2esWFLwFzWYtYwLHCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T16:38:29.314708Z"},"content_sha256":"7274baed4286872e6b24a22e00ac22f0cbcdc217335b3053af290aa5ee31ffd2","schema_version":"1.0","event_id":"sha256:7274baed4286872e6b24a22e00ac22f0cbcdc217335b3053af290aa5ee31ffd2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HZ7REZ3WVJPNBB4FE2CI6ATVIQ/bundle.json","state_url":"https://pith.science/pith/HZ7REZ3WVJPNBB4FE2CI6ATVIQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HZ7REZ3WVJPNBB4FE2CI6ATVIQ/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":"2026-05-25T16:38:29Z","links":{"resolver":"https://pith.science/pith/HZ7REZ3WVJPNBB4FE2CI6ATVIQ","bundle":"https://pith.science/pith/HZ7REZ3WVJPNBB4FE2CI6ATVIQ/bundle.json","state":"https://pith.science/pith/HZ7REZ3WVJPNBB4FE2CI6ATVIQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HZ7REZ3WVJPNBB4FE2CI6ATVIQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:HZ7REZ3WVJPNBB4FE2CI6ATVIQ","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":"98000a5625e3b514ec682b3bdf4d0fac12f97e567d2790ee68fc559641c652ca","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-05-29T14:54:28Z","title_canon_sha256":"af7217df9d4058cc8943bf2ff5247e7322722aa2838811ea77e2a8bca5ce5b50"},"schema_version":"1.0","source":{"id":"1805.11522","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.11522","created_at":"2026-05-18T00:14:42Z"},{"alias_kind":"arxiv_version","alias_value":"1805.11522v1","created_at":"2026-05-18T00:14:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.11522","created_at":"2026-05-18T00:14:42Z"},{"alias_kind":"pith_short_12","alias_value":"HZ7REZ3WVJPN","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_16","alias_value":"HZ7REZ3WVJPNBB4F","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_8","alias_value":"HZ7REZ3W","created_at":"2026-05-18T12:32:28Z"}],"graph_snapshots":[{"event_id":"sha256:7274baed4286872e6b24a22e00ac22f0cbcdc217335b3053af290aa5ee31ffd2","target":"graph","created_at":"2026-05-18T00:14:42Z","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":"A large part of the Galactic sources emitting very high energy (VHE; > 10^{11} eV) gamma-rays are currently still unidentified. The evolution of Pulsar Wind Nebulae (PWNe) plays a crucial role in interpreting these sources. The time-dependent modeling of PWNe has been tested on a sample of well-known young and intermediate age PWNe; and it is currently applied to the full-sample of unidentified VHE Galactic sources. The consequences of this interpretation go far beyond the interpretation of \"dark sources\" (i.e. VHE gamma-ray sources without lower energies, radio or X-ray, counterparts): e.g. t","authors_text":"O. Tibolla, S. Kaufmann","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-05-29T14:54:28Z","title":"Ancient Pulsar Wind Nebulae as a natural explanation for unidentified gamma-ray sources"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.11522","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:fc440d3198c0833daecea5e46e50ecf40e28273cb093317d5dfd6002d752041a","target":"record","created_at":"2026-05-18T00:14:42Z","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":"98000a5625e3b514ec682b3bdf4d0fac12f97e567d2790ee68fc559641c652ca","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-05-29T14:54:28Z","title_canon_sha256":"af7217df9d4058cc8943bf2ff5247e7322722aa2838811ea77e2a8bca5ce5b50"},"schema_version":"1.0","source":{"id":"1805.11522","kind":"arxiv","version":1}},"canonical_sha256":"3e7f126776aa5ed0878526848f027544219352c0b53524dcb0b8a55b375f3f85","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3e7f126776aa5ed0878526848f027544219352c0b53524dcb0b8a55b375f3f85","first_computed_at":"2026-05-18T00:14:42.215736Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:14:42.215736Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lzn7z9lzb1/GHndmkXRgr4qbZVgkVAGZ5dpNsXqEkyOr+skxJRbhXPBATw7Cad+TsKNuDbyOJLgwbshktAf9Aw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:14:42.216322Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.11522","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fc440d3198c0833daecea5e46e50ecf40e28273cb093317d5dfd6002d752041a","sha256:7274baed4286872e6b24a22e00ac22f0cbcdc217335b3053af290aa5ee31ffd2"],"state_sha256":"a15f57c1c9b5a2292f1757f59a23f06ae37a5f5415c41df2d68405d437d5adc4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PbsO4Vk2G0d75WC/iIYLJKBHjz1+mRhSQxH5v/fztkjGQ6/wG6C5D+g4Jnz+MsA9DuazGU16JlViInzUewHoDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T16:38:29.318947Z","bundle_sha256":"9e270ab43ce3ed5406ca81bae961dcd8c2e2cbcc13f51d483b24541c844689e6"}}