{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:O7YR3JNKUNWRV2EUYMU3IDFO6S","short_pith_number":"pith:O7YR3JNK","canonical_record":{"source":{"id":"1308.5175","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-08-23T16:33:02Z","cross_cats_sorted":[],"title_canon_sha256":"f0f5daf8679c326eefc19483d50161dd339e8028ae3f35e1f7915eb85526e9de","abstract_canon_sha256":"757ecb96438bedfd0aae06384619b1b0d0a0163756b0116f837b112d7d83bfea"},"schema_version":"1.0"},"canonical_sha256":"77f11da5aaa36d1ae894c329b40caef48e05ecbaf029cdc262caa0cd9bfcc466","source":{"kind":"arxiv","id":"1308.5175","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.5175","created_at":"2026-05-18T01:47:59Z"},{"alias_kind":"arxiv_version","alias_value":"1308.5175v1","created_at":"2026-05-18T01:47:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.5175","created_at":"2026-05-18T01:47:59Z"},{"alias_kind":"pith_short_12","alias_value":"O7YR3JNKUNWR","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"O7YR3JNKUNWRV2EU","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"O7YR3JNK","created_at":"2026-05-18T12:27:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:O7YR3JNKUNWRV2EUYMU3IDFO6S","target":"record","payload":{"canonical_record":{"source":{"id":"1308.5175","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-08-23T16:33:02Z","cross_cats_sorted":[],"title_canon_sha256":"f0f5daf8679c326eefc19483d50161dd339e8028ae3f35e1f7915eb85526e9de","abstract_canon_sha256":"757ecb96438bedfd0aae06384619b1b0d0a0163756b0116f837b112d7d83bfea"},"schema_version":"1.0"},"canonical_sha256":"77f11da5aaa36d1ae894c329b40caef48e05ecbaf029cdc262caa0cd9bfcc466","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:47:59.148889Z","signature_b64":"1GbwTAT00NQ3w4eKqSn7hFjF2dpT57SgFl6IRjCONmGo0HRiE3+/5TzvsTt7i6yYTZUZGiMYNzyUnwx/pE6EBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"77f11da5aaa36d1ae894c329b40caef48e05ecbaf029cdc262caa0cd9bfcc466","last_reissued_at":"2026-05-18T01:47:59.148285Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:47:59.148285Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1308.5175","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":"2026-05-18T01:47:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yqUB7M/t2942W5ah+B3at7zfOmtVEarcYFooM1XMi6OOLnFwPDd3sKR+/5DV71A9sTrb2F5UIX3D/vYwITEvDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T02:13:50.714739Z"},"content_sha256":"da861828c428bbf1693d656f5258583d83788d03dc228c42015164467b0ba394","schema_version":"1.0","event_id":"sha256:da861828c428bbf1693d656f5258583d83788d03dc228c42015164467b0ba394"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:O7YR3JNKUNWRV2EUYMU3IDFO6S","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the nature of CP Pup","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Antonio Bianchini, Domitilla de Martino, Elena Mason, Francesco di Mille, Koji Mukai, Marina Orio, Robert E. Williams, Roberto De Propris, Timothy Abbot","submitted_at":"2013-08-23T16:33:02Z","abstract_excerpt":"We present new X-ray and optical spectra of the old nova CP Pup (nova Pup 1942) obtained with Chandra and the CTIO 4m telescope. The X-ray spectrum reveals a multi-temperature optically thin plasma reaching a maximum temperature of 36$^{+19}_{-16}$ keV absorbed by local complex neutral material. The time resolved optical spectroscopy confirms the presence of the $\\sim$1.47 hr period, with cycle-to-cycle amplitude changes, as well as of an additional long term modulation which is suggestive either of a longer period or of non-Keplerian velocities in the emission line regions. These new observat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.5175","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":"2026-05-18T01:47:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6MrQOPsOvOXxZuacTjvezP9rR8DcZPXvjOlZlXJzgiJs89HKbRo3aSBP/qgSBB+zIw+FPi9//6WYL0fOBamZBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T02:13:50.715414Z"},"content_sha256":"639907b68dbfea05f278b2a27fe40cdead058badfd3faa7614282d2da290e1ae","schema_version":"1.0","event_id":"sha256:639907b68dbfea05f278b2a27fe40cdead058badfd3faa7614282d2da290e1ae"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/O7YR3JNKUNWRV2EUYMU3IDFO6S/bundle.json","state_url":"https://pith.science/pith/O7YR3JNKUNWRV2EUYMU3IDFO6S/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/O7YR3JNKUNWRV2EUYMU3IDFO6S/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":"2026-05-27T02:13:50Z","links":{"resolver":"https://pith.science/pith/O7YR3JNKUNWRV2EUYMU3IDFO6S","bundle":"https://pith.science/pith/O7YR3JNKUNWRV2EUYMU3IDFO6S/bundle.json","state":"https://pith.science/pith/O7YR3JNKUNWRV2EUYMU3IDFO6S/state.json","well_known_bundle":"https://pith.science/.well-known/pith/O7YR3JNKUNWRV2EUYMU3IDFO6S/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:O7YR3JNKUNWRV2EUYMU3IDFO6S","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":"757ecb96438bedfd0aae06384619b1b0d0a0163756b0116f837b112d7d83bfea","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-08-23T16:33:02Z","title_canon_sha256":"f0f5daf8679c326eefc19483d50161dd339e8028ae3f35e1f7915eb85526e9de"},"schema_version":"1.0","source":{"id":"1308.5175","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.5175","created_at":"2026-05-18T01:47:59Z"},{"alias_kind":"arxiv_version","alias_value":"1308.5175v1","created_at":"2026-05-18T01:47:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.5175","created_at":"2026-05-18T01:47:59Z"},{"alias_kind":"pith_short_12","alias_value":"O7YR3JNKUNWR","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"O7YR3JNKUNWRV2EU","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"O7YR3JNK","created_at":"2026-05-18T12:27:54Z"}],"graph_snapshots":[{"event_id":"sha256:639907b68dbfea05f278b2a27fe40cdead058badfd3faa7614282d2da290e1ae","target":"graph","created_at":"2026-05-18T01:47:59Z","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 new X-ray and optical spectra of the old nova CP Pup (nova Pup 1942) obtained with Chandra and the CTIO 4m telescope. The X-ray spectrum reveals a multi-temperature optically thin plasma reaching a maximum temperature of 36$^{+19}_{-16}$ keV absorbed by local complex neutral material. The time resolved optical spectroscopy confirms the presence of the $\\sim$1.47 hr period, with cycle-to-cycle amplitude changes, as well as of an additional long term modulation which is suggestive either of a longer period or of non-Keplerian velocities in the emission line regions. These new observat","authors_text":"Antonio Bianchini, Domitilla de Martino, Elena Mason, Francesco di Mille, Koji Mukai, Marina Orio, Robert E. Williams, Roberto De Propris, Timothy Abbot","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-08-23T16:33:02Z","title":"On the nature of CP Pup"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.5175","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:da861828c428bbf1693d656f5258583d83788d03dc228c42015164467b0ba394","target":"record","created_at":"2026-05-18T01:47:59Z","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":"757ecb96438bedfd0aae06384619b1b0d0a0163756b0116f837b112d7d83bfea","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-08-23T16:33:02Z","title_canon_sha256":"f0f5daf8679c326eefc19483d50161dd339e8028ae3f35e1f7915eb85526e9de"},"schema_version":"1.0","source":{"id":"1308.5175","kind":"arxiv","version":1}},"canonical_sha256":"77f11da5aaa36d1ae894c329b40caef48e05ecbaf029cdc262caa0cd9bfcc466","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"77f11da5aaa36d1ae894c329b40caef48e05ecbaf029cdc262caa0cd9bfcc466","first_computed_at":"2026-05-18T01:47:59.148285Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:47:59.148285Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1GbwTAT00NQ3w4eKqSn7hFjF2dpT57SgFl6IRjCONmGo0HRiE3+/5TzvsTt7i6yYTZUZGiMYNzyUnwx/pE6EBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:47:59.148889Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.5175","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:da861828c428bbf1693d656f5258583d83788d03dc228c42015164467b0ba394","sha256:639907b68dbfea05f278b2a27fe40cdead058badfd3faa7614282d2da290e1ae"],"state_sha256":"629f4ff7564c94848f4e1623a01bbc1f16c1a457aff140871acb2e88f1d2a4f9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eAKQa1Oyz9Jk+aTHNKMsTly8NIjAY+BKxinaEzBU5y3834gh95gdkU7xFx5Tm1/Rv2lIy2ZpQ+HhhMpEqWsxBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T02:13:50.717816Z","bundle_sha256":"4698afb5d8c521ce464e2ac27a793f7282f29af499de7ec6495fac76b5fb341e"}}