{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:D3Y7DCOB2HGNDUUTIDYCOBXO34","short_pith_number":"pith:D3Y7DCOB","canonical_record":{"source":{"id":"1101.3363","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-01-18T01:35:52Z","cross_cats_sorted":[],"title_canon_sha256":"5f3c0329907b8874ef599cbd50203ed078a6988c9fd065e3b7cc8d365479031c","abstract_canon_sha256":"bd871c9d837f5db2e2aaee18919679d72d8b0817ab524672b396f0f990ce2dff"},"schema_version":"1.0"},"canonical_sha256":"1ef1f189c1d1ccd1d29340f02706eedf36714dab913e34b3e6da773af8a1dfd0","source":{"kind":"arxiv","id":"1101.3363","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1101.3363","created_at":"2026-05-18T02:03:26Z"},{"alias_kind":"arxiv_version","alias_value":"1101.3363v2","created_at":"2026-05-18T02:03:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.3363","created_at":"2026-05-18T02:03:26Z"},{"alias_kind":"pith_short_12","alias_value":"D3Y7DCOB2HGN","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_16","alias_value":"D3Y7DCOB2HGNDUUT","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_8","alias_value":"D3Y7DCOB","created_at":"2026-05-18T12:26:26Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:D3Y7DCOB2HGNDUUTIDYCOBXO34","target":"record","payload":{"canonical_record":{"source":{"id":"1101.3363","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-01-18T01:35:52Z","cross_cats_sorted":[],"title_canon_sha256":"5f3c0329907b8874ef599cbd50203ed078a6988c9fd065e3b7cc8d365479031c","abstract_canon_sha256":"bd871c9d837f5db2e2aaee18919679d72d8b0817ab524672b396f0f990ce2dff"},"schema_version":"1.0"},"canonical_sha256":"1ef1f189c1d1ccd1d29340f02706eedf36714dab913e34b3e6da773af8a1dfd0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:27.000217Z","signature_b64":"ma7k405U397VvvNo2Ed2j7/KL30ChZq/xtzDsEEU9SMzGOLCk+M2jTMBG4xKI4DlAcUmg35aVllalRzAIaRZBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1ef1f189c1d1ccd1d29340f02706eedf36714dab913e34b3e6da773af8a1dfd0","last_reissued_at":"2026-05-18T02:03:26.999480Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:26.999480Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1101.3363","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":"2026-05-18T02:03:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BSiF8AVonaX+IPe+YX5MpDlJ/w3L/DKunIXcv7qcrwyXpumL3iqbor4aNAva6KQ6emgNFqH4E/C47G66meYxCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T05:47:30.612903Z"},"content_sha256":"15d4f24210a979016e1df1cee45fa08651f08d762f14bfd93528f0d13867ec5e","schema_version":"1.0","event_id":"sha256:15d4f24210a979016e1df1cee45fa08651f08d762f14bfd93528f0d13867ec5e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:D3Y7DCOB2HGNDUUTIDYCOBXO34","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"XMM-Newton Observations of NGC 247: X-ray Population and a Supersoft Ultraluminous X-ray Source","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Hua Feng, Jing Jin, Philip Kaaret, Shuang-Nan Zhang","submitted_at":"2011-01-18T01:35:52Z","abstract_excerpt":"We report on a new XMM-Newton observation of NGC 247 from December 2009. The galaxy contains a supersoft, ultraluminous X-ray source (ULX) whose spectrum consists of a thermal component with a temperature about 0.1 keV and a power-law tail with a photon index around 2.5. The thermal emission is absolutely the dominant component, contributing 96% of the total luminosity in the 0.3-10 keV band. Variability is detected at timescales of 10^2 s and longer with a \\nu^-1 power spectrum. These properties are consistent with black hole binaries in the thermal state and suggest the presence of an interm"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.3363","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":"2026-05-18T02:03:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8AVarPDApiF0R7YwKd8juvT2RyufHoeLu7RBAdYsbtUsH1BPVnN5l0PMdZ5gQm3tqXUnUwoomoE0Vz5LNSrsCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T05:47:30.613612Z"},"content_sha256":"0ab88368452a3f6ba081d6c816297cb15b1b22c37b92e810dabbc7384f0db51d","schema_version":"1.0","event_id":"sha256:0ab88368452a3f6ba081d6c816297cb15b1b22c37b92e810dabbc7384f0db51d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/D3Y7DCOB2HGNDUUTIDYCOBXO34/bundle.json","state_url":"https://pith.science/pith/D3Y7DCOB2HGNDUUTIDYCOBXO34/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/D3Y7DCOB2HGNDUUTIDYCOBXO34/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":"2026-06-09T05:47:30Z","links":{"resolver":"https://pith.science/pith/D3Y7DCOB2HGNDUUTIDYCOBXO34","bundle":"https://pith.science/pith/D3Y7DCOB2HGNDUUTIDYCOBXO34/bundle.json","state":"https://pith.science/pith/D3Y7DCOB2HGNDUUTIDYCOBXO34/state.json","well_known_bundle":"https://pith.science/.well-known/pith/D3Y7DCOB2HGNDUUTIDYCOBXO34/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:D3Y7DCOB2HGNDUUTIDYCOBXO34","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":"bd871c9d837f5db2e2aaee18919679d72d8b0817ab524672b396f0f990ce2dff","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-01-18T01:35:52Z","title_canon_sha256":"5f3c0329907b8874ef599cbd50203ed078a6988c9fd065e3b7cc8d365479031c"},"schema_version":"1.0","source":{"id":"1101.3363","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1101.3363","created_at":"2026-05-18T02:03:26Z"},{"alias_kind":"arxiv_version","alias_value":"1101.3363v2","created_at":"2026-05-18T02:03:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.3363","created_at":"2026-05-18T02:03:26Z"},{"alias_kind":"pith_short_12","alias_value":"D3Y7DCOB2HGN","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_16","alias_value":"D3Y7DCOB2HGNDUUT","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_8","alias_value":"D3Y7DCOB","created_at":"2026-05-18T12:26:26Z"}],"graph_snapshots":[{"event_id":"sha256:0ab88368452a3f6ba081d6c816297cb15b1b22c37b92e810dabbc7384f0db51d","target":"graph","created_at":"2026-05-18T02:03:26Z","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 report on a new XMM-Newton observation of NGC 247 from December 2009. The galaxy contains a supersoft, ultraluminous X-ray source (ULX) whose spectrum consists of a thermal component with a temperature about 0.1 keV and a power-law tail with a photon index around 2.5. The thermal emission is absolutely the dominant component, contributing 96% of the total luminosity in the 0.3-10 keV band. Variability is detected at timescales of 10^2 s and longer with a \\nu^-1 power spectrum. These properties are consistent with black hole binaries in the thermal state and suggest the presence of an interm","authors_text":"Hua Feng, Jing Jin, Philip Kaaret, Shuang-Nan Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-01-18T01:35:52Z","title":"XMM-Newton Observations of NGC 247: X-ray Population and a Supersoft Ultraluminous X-ray Source"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.3363","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":"sha256:15d4f24210a979016e1df1cee45fa08651f08d762f14bfd93528f0d13867ec5e","target":"record","created_at":"2026-05-18T02:03:26Z","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":"bd871c9d837f5db2e2aaee18919679d72d8b0817ab524672b396f0f990ce2dff","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-01-18T01:35:52Z","title_canon_sha256":"5f3c0329907b8874ef599cbd50203ed078a6988c9fd065e3b7cc8d365479031c"},"schema_version":"1.0","source":{"id":"1101.3363","kind":"arxiv","version":2}},"canonical_sha256":"1ef1f189c1d1ccd1d29340f02706eedf36714dab913e34b3e6da773af8a1dfd0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1ef1f189c1d1ccd1d29340f02706eedf36714dab913e34b3e6da773af8a1dfd0","first_computed_at":"2026-05-18T02:03:26.999480Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:26.999480Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ma7k405U397VvvNo2Ed2j7/KL30ChZq/xtzDsEEU9SMzGOLCk+M2jTMBG4xKI4DlAcUmg35aVllalRzAIaRZBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:27.000217Z","signed_message":"canonical_sha256_bytes"},"source_id":"1101.3363","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:15d4f24210a979016e1df1cee45fa08651f08d762f14bfd93528f0d13867ec5e","sha256:0ab88368452a3f6ba081d6c816297cb15b1b22c37b92e810dabbc7384f0db51d"],"state_sha256":"831880f721b88c5b338abb1032f6d81d1e001e3345c52bfce26aa457577a511f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tu3jam1kcLlbEsBwJ3zlguWVpsd8dLViyoDfQZoCuwaZDwpj1B6qQkUs9iJ7I+XQieeYER6AffRPwpzsQ+6uBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T05:47:30.618053Z","bundle_sha256":"01050c140197733cdfabad114ca341fcdc0203ba74f8c923581ce3cc0bab7ecd"}}