{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:JWJSHI2ZLTJJOG2RV56PLI5WTQ","short_pith_number":"pith:JWJSHI2Z","canonical_record":{"source":{"id":"0905.2564","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-05-15T15:33:37Z","cross_cats_sorted":[],"title_canon_sha256":"0a401c6c9a54e5ba6fc556f98526799f8d437de908f88d3e8c4be0cf222ba96c","abstract_canon_sha256":"78b03e169bff3795ae1a240e9f99547ac5689e35b8fd29f7479c94fe73b6fa8f"},"schema_version":"1.0"},"canonical_sha256":"4d9323a3595cd2971b51af7cf5a3b69c0d112c58211809223e0eaa32cc5c06fd","source":{"kind":"arxiv","id":"0905.2564","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0905.2564","created_at":"2026-05-18T02:13:39Z"},{"alias_kind":"arxiv_version","alias_value":"0905.2564v2","created_at":"2026-05-18T02:13:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0905.2564","created_at":"2026-05-18T02:13:39Z"},{"alias_kind":"pith_short_12","alias_value":"JWJSHI2ZLTJJ","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"JWJSHI2ZLTJJOG2R","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"JWJSHI2Z","created_at":"2026-05-18T12:26:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:JWJSHI2ZLTJJOG2RV56PLI5WTQ","target":"record","payload":{"canonical_record":{"source":{"id":"0905.2564","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-05-15T15:33:37Z","cross_cats_sorted":[],"title_canon_sha256":"0a401c6c9a54e5ba6fc556f98526799f8d437de908f88d3e8c4be0cf222ba96c","abstract_canon_sha256":"78b03e169bff3795ae1a240e9f99547ac5689e35b8fd29f7479c94fe73b6fa8f"},"schema_version":"1.0"},"canonical_sha256":"4d9323a3595cd2971b51af7cf5a3b69c0d112c58211809223e0eaa32cc5c06fd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:13:39.207819Z","signature_b64":"7BoAmPXnGu92RLTS3Qid46bh4NUmHhh0I3po1P1+PPt228POCQ7iacRxNY0H/Z8r7Du2GAk9y2mlXEqK2EfoDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4d9323a3595cd2971b51af7cf5a3b69c0d112c58211809223e0eaa32cc5c06fd","last_reissued_at":"2026-05-18T02:13:39.207453Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:13:39.207453Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0905.2564","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:13:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vUmKr9FCJpr1dO2Z1QmtubO+PTJmUaUbYrFrbuWFfLahkjwUj/ODv0o7NVs66BwLYUzuT6n+uprcY+1rZoWyDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:18:27.061731Z"},"content_sha256":"e64cf31400968c1427071f38f0e32d0426d1f9f61d9babc701f3c5116ef0c3ea","schema_version":"1.0","event_id":"sha256:e64cf31400968c1427071f38f0e32d0426d1f9f61d9babc701f3c5116ef0c3ea"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:JWJSHI2ZLTJJOG2RV56PLI5WTQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Accounting for the Foreground Contribution to the Dust Emission towards Kepler's Supernova Remnant","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"B. Sibthorpe, E. M. Reynoso, H. L. Gomez, K. Isaak, L. Dunne, M. A. Thompson, R. Ivison, S. A. Eales, S. Maddox, T. M. DeLaney","submitted_at":"2009-05-15T15:33:37Z","abstract_excerpt":"Whether or not supernovae contribute significantly to the overall dust budget is a controversial subject. Submillimetre (submm) observations, sensitive to cold dust, have shown an excess at 450 and 850 microns in young remnants Cassiopeia A (Cas A) and Kepler. Some of the submm emission from Cas A has been shown to be contaminated by unrelated material along the line of sight. In this paper we explore the emission from material towards Kepler using submm continuum imaging and spectroscopic observations of atomic and molecular gas, via HI, 12CO (J=2-1) and 13CO (J=2-1). We detect weak CO emissi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0905.2564","kind":"arxiv","version":2},"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":"2026-05-18T02:13:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rcSXcXQbm4nXvo1JbNE6bj4JLUlkCoTqBzVj8JPy3rWjt2wgmDghFvHojAiLQ81ZbW/SVZkSDtJS2x9dsdqnCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:18:27.062388Z"},"content_sha256":"71afc661350de21b15c9570e088b8e0598582589f69fe441e7178ebd3a4a1e32","schema_version":"1.0","event_id":"sha256:71afc661350de21b15c9570e088b8e0598582589f69fe441e7178ebd3a4a1e32"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JWJSHI2ZLTJJOG2RV56PLI5WTQ/bundle.json","state_url":"https://pith.science/pith/JWJSHI2ZLTJJOG2RV56PLI5WTQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JWJSHI2ZLTJJOG2RV56PLI5WTQ/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":"2026-05-25T21:18:27Z","links":{"resolver":"https://pith.science/pith/JWJSHI2ZLTJJOG2RV56PLI5WTQ","bundle":"https://pith.science/pith/JWJSHI2ZLTJJOG2RV56PLI5WTQ/bundle.json","state":"https://pith.science/pith/JWJSHI2ZLTJJOG2RV56PLI5WTQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JWJSHI2ZLTJJOG2RV56PLI5WTQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:JWJSHI2ZLTJJOG2RV56PLI5WTQ","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":"78b03e169bff3795ae1a240e9f99547ac5689e35b8fd29f7479c94fe73b6fa8f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-05-15T15:33:37Z","title_canon_sha256":"0a401c6c9a54e5ba6fc556f98526799f8d437de908f88d3e8c4be0cf222ba96c"},"schema_version":"1.0","source":{"id":"0905.2564","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0905.2564","created_at":"2026-05-18T02:13:39Z"},{"alias_kind":"arxiv_version","alias_value":"0905.2564v2","created_at":"2026-05-18T02:13:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0905.2564","created_at":"2026-05-18T02:13:39Z"},{"alias_kind":"pith_short_12","alias_value":"JWJSHI2ZLTJJ","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"JWJSHI2ZLTJJOG2R","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"JWJSHI2Z","created_at":"2026-05-18T12:26:00Z"}],"graph_snapshots":[{"event_id":"sha256:71afc661350de21b15c9570e088b8e0598582589f69fe441e7178ebd3a4a1e32","target":"graph","created_at":"2026-05-18T02:13:39Z","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":"Whether or not supernovae contribute significantly to the overall dust budget is a controversial subject. Submillimetre (submm) observations, sensitive to cold dust, have shown an excess at 450 and 850 microns in young remnants Cassiopeia A (Cas A) and Kepler. Some of the submm emission from Cas A has been shown to be contaminated by unrelated material along the line of sight. In this paper we explore the emission from material towards Kepler using submm continuum imaging and spectroscopic observations of atomic and molecular gas, via HI, 12CO (J=2-1) and 13CO (J=2-1). We detect weak CO emissi","authors_text":"B. Sibthorpe, E. M. Reynoso, H. L. Gomez, K. Isaak, L. Dunne, M. A. Thompson, R. Ivison, S. A. Eales, S. Maddox, T. M. DeLaney","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-05-15T15:33:37Z","title":"Accounting for the Foreground Contribution to the Dust Emission towards Kepler's Supernova Remnant"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0905.2564","kind":"arxiv","version":2},"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:e64cf31400968c1427071f38f0e32d0426d1f9f61d9babc701f3c5116ef0c3ea","target":"record","created_at":"2026-05-18T02:13:39Z","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":"78b03e169bff3795ae1a240e9f99547ac5689e35b8fd29f7479c94fe73b6fa8f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-05-15T15:33:37Z","title_canon_sha256":"0a401c6c9a54e5ba6fc556f98526799f8d437de908f88d3e8c4be0cf222ba96c"},"schema_version":"1.0","source":{"id":"0905.2564","kind":"arxiv","version":2}},"canonical_sha256":"4d9323a3595cd2971b51af7cf5a3b69c0d112c58211809223e0eaa32cc5c06fd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4d9323a3595cd2971b51af7cf5a3b69c0d112c58211809223e0eaa32cc5c06fd","first_computed_at":"2026-05-18T02:13:39.207453Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:13:39.207453Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7BoAmPXnGu92RLTS3Qid46bh4NUmHhh0I3po1P1+PPt228POCQ7iacRxNY0H/Z8r7Du2GAk9y2mlXEqK2EfoDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:13:39.207819Z","signed_message":"canonical_sha256_bytes"},"source_id":"0905.2564","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e64cf31400968c1427071f38f0e32d0426d1f9f61d9babc701f3c5116ef0c3ea","sha256:71afc661350de21b15c9570e088b8e0598582589f69fe441e7178ebd3a4a1e32"],"state_sha256":"c85bcd2ca37874f0a6cb46328da43b5e636a96449cd2ee8e2b970a7472d77422"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ep18TP/QG4rR9FJADKqe1iRqKx+UxclS9wsYeIiXHSKJJcD0Irv5BGdVTcPYzPQdTCprQ74B1Gu0ZiiXcna2Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T21:18:27.066128Z","bundle_sha256":"3870327e25f952397746d0fce29c605be6ade8b040df90943b55c6af3f67e67b"}}