{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:Q2KKB5IHURIYTJZCJVOBVWJ2MI","short_pith_number":"pith:Q2KKB5IH","canonical_record":{"source":{"id":"1703.01299","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-03-03T19:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"05d8df45e529995e24218a584c439626f6096424fc05616780d111d8a02e904f","abstract_canon_sha256":"89e36d9c42f588f3c6c7c25d6337424e6e1e361f43f76cbce36c13e170c61a80"},"schema_version":"1.0"},"canonical_sha256":"8694a0f507a45189a7224d5c1ad93a623ff6366e6eb0f436479e2c819d290d6b","source":{"kind":"arxiv","id":"1703.01299","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.01299","created_at":"2026-05-18T00:42:01Z"},{"alias_kind":"arxiv_version","alias_value":"1703.01299v2","created_at":"2026-05-18T00:42:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.01299","created_at":"2026-05-18T00:42:01Z"},{"alias_kind":"pith_short_12","alias_value":"Q2KKB5IHURIY","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"Q2KKB5IHURIYTJZC","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"Q2KKB5IH","created_at":"2026-05-18T12:31:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:Q2KKB5IHURIYTJZCJVOBVWJ2MI","target":"record","payload":{"canonical_record":{"source":{"id":"1703.01299","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-03-03T19:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"05d8df45e529995e24218a584c439626f6096424fc05616780d111d8a02e904f","abstract_canon_sha256":"89e36d9c42f588f3c6c7c25d6337424e6e1e361f43f76cbce36c13e170c61a80"},"schema_version":"1.0"},"canonical_sha256":"8694a0f507a45189a7224d5c1ad93a623ff6366e6eb0f436479e2c819d290d6b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:42:01.655541Z","signature_b64":"WXPxQ024biYtFhK/k9x8YChs2ugNNAncIJeKemdrjVqBEr7YHOeGBJspM5+y785PO6KMTvsncRX/OR931wX1CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8694a0f507a45189a7224d5c1ad93a623ff6366e6eb0f436479e2c819d290d6b","last_reissued_at":"2026-05-18T00:42:01.654927Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:42:01.654927Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1703.01299","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":"2026-05-18T00:42:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DO9Apr42pSPT0Eh+G6lK8AZ2V2DvusY4Sw1v3nKJ3kN/NNMWqYMx+s1EgM9m3Zrze8nUDPK562gk4K028gqhCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T15:00:32.844015Z"},"content_sha256":"da826d2671cd0a7aa2e3be4d334ecb5e052b893d9634de2cb3c38dfdd5bacea2","schema_version":"1.0","event_id":"sha256:da826d2671cd0a7aa2e3be4d334ecb5e052b893d9634de2cb3c38dfdd5bacea2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:Q2KKB5IHURIYTJZCJVOBVWJ2MI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Revisiting optical tidal disruption events with iPTF16axa","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Horesh, C. Fremling, C. McCully, I. Arcavi, Lin Yan, N. Blagorodnova, N. Roth, P. E. Nugent, P. Wozniak, R. Lunnan, S.B. Cenko, S. Gezari, S. R. Kulkarni, T. Hung, Y. Cao","submitted_at":"2017-03-03T19:00:00Z","abstract_excerpt":"We report the discovery by the intermediate Palomar Transient Factory (iPTF) of a candidate tidal disruption event (TDE) iPTF16axa at $z=0.108$, and present its broadband photometric and spectroscopic evolution from 3 months of follow-up observations with ground-based telescopes and Swift. The light curve is well fitted with a $t^{-5/3}$ decay, and we constrain the rise-time to peak to be $<$49 rest-frame days after disruption, which is roughly consistent with the fallback timescale expected for the $\\sim 5\\times$10$^{6}$ $M_\\odot$ black hole inferred from the stellar velocity dispersion of th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.01299","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":"2026-05-18T00:42:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/xVBG6j4bls+wQCEbe2PYYdO92U0Ux0oFXeLAwynggwAv8lqXUSqnwpzFJUA5ajZV9yD7ws9AYWelwkQ6+m5DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T15:00:32.844395Z"},"content_sha256":"3fa5bc62e4bfb58dbb0d644673423a6e9984c53366dde4adb1be567176c583c9","schema_version":"1.0","event_id":"sha256:3fa5bc62e4bfb58dbb0d644673423a6e9984c53366dde4adb1be567176c583c9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Q2KKB5IHURIYTJZCJVOBVWJ2MI/bundle.json","state_url":"https://pith.science/pith/Q2KKB5IHURIYTJZCJVOBVWJ2MI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Q2KKB5IHURIYTJZCJVOBVWJ2MI/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":"2026-05-29T15:00:32Z","links":{"resolver":"https://pith.science/pith/Q2KKB5IHURIYTJZCJVOBVWJ2MI","bundle":"https://pith.science/pith/Q2KKB5IHURIYTJZCJVOBVWJ2MI/bundle.json","state":"https://pith.science/pith/Q2KKB5IHURIYTJZCJVOBVWJ2MI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Q2KKB5IHURIYTJZCJVOBVWJ2MI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:Q2KKB5IHURIYTJZCJVOBVWJ2MI","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":"89e36d9c42f588f3c6c7c25d6337424e6e1e361f43f76cbce36c13e170c61a80","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-03-03T19:00:00Z","title_canon_sha256":"05d8df45e529995e24218a584c439626f6096424fc05616780d111d8a02e904f"},"schema_version":"1.0","source":{"id":"1703.01299","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.01299","created_at":"2026-05-18T00:42:01Z"},{"alias_kind":"arxiv_version","alias_value":"1703.01299v2","created_at":"2026-05-18T00:42:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.01299","created_at":"2026-05-18T00:42:01Z"},{"alias_kind":"pith_short_12","alias_value":"Q2KKB5IHURIY","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"Q2KKB5IHURIYTJZC","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"Q2KKB5IH","created_at":"2026-05-18T12:31:37Z"}],"graph_snapshots":[{"event_id":"sha256:3fa5bc62e4bfb58dbb0d644673423a6e9984c53366dde4adb1be567176c583c9","target":"graph","created_at":"2026-05-18T00:42:01Z","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 the discovery by the intermediate Palomar Transient Factory (iPTF) of a candidate tidal disruption event (TDE) iPTF16axa at $z=0.108$, and present its broadband photometric and spectroscopic evolution from 3 months of follow-up observations with ground-based telescopes and Swift. The light curve is well fitted with a $t^{-5/3}$ decay, and we constrain the rise-time to peak to be $<$49 rest-frame days after disruption, which is roughly consistent with the fallback timescale expected for the $\\sim 5\\times$10$^{6}$ $M_\\odot$ black hole inferred from the stellar velocity dispersion of th","authors_text":"A. Horesh, C. Fremling, C. McCully, I. Arcavi, Lin Yan, N. Blagorodnova, N. Roth, P. E. Nugent, P. Wozniak, R. Lunnan, S.B. Cenko, S. Gezari, S. R. Kulkarni, T. Hung, Y. Cao","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-03-03T19:00:00Z","title":"Revisiting optical tidal disruption events with iPTF16axa"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.01299","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:da826d2671cd0a7aa2e3be4d334ecb5e052b893d9634de2cb3c38dfdd5bacea2","target":"record","created_at":"2026-05-18T00:42:01Z","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":"89e36d9c42f588f3c6c7c25d6337424e6e1e361f43f76cbce36c13e170c61a80","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-03-03T19:00:00Z","title_canon_sha256":"05d8df45e529995e24218a584c439626f6096424fc05616780d111d8a02e904f"},"schema_version":"1.0","source":{"id":"1703.01299","kind":"arxiv","version":2}},"canonical_sha256":"8694a0f507a45189a7224d5c1ad93a623ff6366e6eb0f436479e2c819d290d6b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8694a0f507a45189a7224d5c1ad93a623ff6366e6eb0f436479e2c819d290d6b","first_computed_at":"2026-05-18T00:42:01.654927Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:42:01.654927Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WXPxQ024biYtFhK/k9x8YChs2ugNNAncIJeKemdrjVqBEr7YHOeGBJspM5+y785PO6KMTvsncRX/OR931wX1CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:42:01.655541Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.01299","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:da826d2671cd0a7aa2e3be4d334ecb5e052b893d9634de2cb3c38dfdd5bacea2","sha256:3fa5bc62e4bfb58dbb0d644673423a6e9984c53366dde4adb1be567176c583c9"],"state_sha256":"2a6eddbfe5209c2860ed52810078ce3dcc64ec228011232aab21174d6bfc3d2a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N4+RBkNX/jH3ovs+rdSv0iWPgvQV/tzhXJDT7mvfpzUToBV4/2omRzPSYTHZTp6QsDjvVsPfS0UmzOkJiGe/AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T15:00:32.846462Z","bundle_sha256":"a4eef9cfdc93ddece48f3eb4c22fcdeb5f21ce67dfd42c3dcdcf646262efc982"}}