{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:YT2V3QVTEY6S2VDHQZAIB3O44A","short_pith_number":"pith:YT2V3QVT","canonical_record":{"source":{"id":"1610.08503","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-10-26T20:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"c5481a9e98da3d921a350156ba3c32c6d6b833e76fb11b61eb352815e0df11fe","abstract_canon_sha256":"f694fd9c108da48f9ab03c99b815a91d14930b2a103364f45a0724b4be1ea753"},"schema_version":"1.0"},"canonical_sha256":"c4f55dc2b3263d2d5467864080eddce010d2f48394cc8a9c7e1e5e4b9e967c81","source":{"kind":"arxiv","id":"1610.08503","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.08503","created_at":"2026-05-18T00:34:52Z"},{"alias_kind":"arxiv_version","alias_value":"1610.08503v2","created_at":"2026-05-18T00:34:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.08503","created_at":"2026-05-18T00:34:52Z"},{"alias_kind":"pith_short_12","alias_value":"YT2V3QVTEY6S","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_16","alias_value":"YT2V3QVTEY6S2VDH","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_8","alias_value":"YT2V3QVT","created_at":"2026-05-18T12:30:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:YT2V3QVTEY6S2VDHQZAIB3O44A","target":"record","payload":{"canonical_record":{"source":{"id":"1610.08503","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-10-26T20:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"c5481a9e98da3d921a350156ba3c32c6d6b833e76fb11b61eb352815e0df11fe","abstract_canon_sha256":"f694fd9c108da48f9ab03c99b815a91d14930b2a103364f45a0724b4be1ea753"},"schema_version":"1.0"},"canonical_sha256":"c4f55dc2b3263d2d5467864080eddce010d2f48394cc8a9c7e1e5e4b9e967c81","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:34:52.527122Z","signature_b64":"sLLc1SGqmPXuFv6d5HLkt0oxFH5csjYvAMsZv1uXjcGC8cZ25888t2DlT8zak6n79DXasMYrUqLMmJ1YtwAAAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c4f55dc2b3263d2d5467864080eddce010d2f48394cc8a9c7e1e5e4b9e967c81","last_reissued_at":"2026-05-18T00:34:52.526474Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:34:52.526474Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1610.08503","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":"2026-05-18T00:34:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CXhl2whnyHRXur8nE89WP2RuqXp7kJ6JrONLGeqeCdmN1HntOfwopKHxAcwUPbLC5OanIQJjW/OEHlNGDCcYAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T15:49:05.639073Z"},"content_sha256":"a82deccc768b448692cdf9d4869bb1fac6237e6945b5ff8ec800f45943ce2af7","schema_version":"1.0","event_id":"sha256:a82deccc768b448692cdf9d4869bb1fac6237e6945b5ff8ec800f45943ce2af7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:YT2V3QVTEY6S2VDHQZAIB3O44A","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Characterizing Intra-cluster light in the Hubble Frontier Fields","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"2), (2) Tohoku University, (3) AIP, (4) University of Melbourne), Benedetta Vulcani (4), Kasper B. Schmidt (3), Louis E. Abramson (1), Takahiro Morishita (1, Tommaso Treu (1), Xin Wang (1) ((1) UCLA","submitted_at":"2016-10-26T20:00:00Z","abstract_excerpt":"We investigate the intra-cluster light (ICL) in the 6 Hubble Frontier Field clusters at $0.3<z<0.6$. We employ a new method, which is free from any functional form of the ICL profile, and exploit the unprecedented depth of this Hubble Space Telescope imaging to map the ICL's diffuse light out to clustrocentric radii $R\\sim300$kpc ($\\mu_{\\rm ICL}\\sim27$mag arcsec$^{-2}$). From these maps, we construct radial color and stellar mass profiles via SED fitting and find clear negative color gradients in all systems with increasing distance from the Brightest Cluster Galaxy (BCG). While this implies o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.08503","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":"2026-05-18T00:34:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/D6SkA8lSxkxvOPyyZHa9c2SxOnu9ZVvpAB26x7I7axXWEVTF6CfYa7SVnEz5a4xYr21/JruRWZlXuO5Pm9nDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T15:49:05.639791Z"},"content_sha256":"0eca0295841e8af8910c73ed8bcf9b0809a694d5ad53884d77341210702b7942","schema_version":"1.0","event_id":"sha256:0eca0295841e8af8910c73ed8bcf9b0809a694d5ad53884d77341210702b7942"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YT2V3QVTEY6S2VDHQZAIB3O44A/bundle.json","state_url":"https://pith.science/pith/YT2V3QVTEY6S2VDHQZAIB3O44A/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YT2V3QVTEY6S2VDHQZAIB3O44A/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":"2026-06-06T15:49:05Z","links":{"resolver":"https://pith.science/pith/YT2V3QVTEY6S2VDHQZAIB3O44A","bundle":"https://pith.science/pith/YT2V3QVTEY6S2VDHQZAIB3O44A/bundle.json","state":"https://pith.science/pith/YT2V3QVTEY6S2VDHQZAIB3O44A/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YT2V3QVTEY6S2VDHQZAIB3O44A/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:YT2V3QVTEY6S2VDHQZAIB3O44A","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":"f694fd9c108da48f9ab03c99b815a91d14930b2a103364f45a0724b4be1ea753","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-10-26T20:00:00Z","title_canon_sha256":"c5481a9e98da3d921a350156ba3c32c6d6b833e76fb11b61eb352815e0df11fe"},"schema_version":"1.0","source":{"id":"1610.08503","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.08503","created_at":"2026-05-18T00:34:52Z"},{"alias_kind":"arxiv_version","alias_value":"1610.08503v2","created_at":"2026-05-18T00:34:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.08503","created_at":"2026-05-18T00:34:52Z"},{"alias_kind":"pith_short_12","alias_value":"YT2V3QVTEY6S","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_16","alias_value":"YT2V3QVTEY6S2VDH","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_8","alias_value":"YT2V3QVT","created_at":"2026-05-18T12:30:53Z"}],"graph_snapshots":[{"event_id":"sha256:0eca0295841e8af8910c73ed8bcf9b0809a694d5ad53884d77341210702b7942","target":"graph","created_at":"2026-05-18T00:34:52Z","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 investigate the intra-cluster light (ICL) in the 6 Hubble Frontier Field clusters at $0.3<z<0.6$. We employ a new method, which is free from any functional form of the ICL profile, and exploit the unprecedented depth of this Hubble Space Telescope imaging to map the ICL's diffuse light out to clustrocentric radii $R\\sim300$kpc ($\\mu_{\\rm ICL}\\sim27$mag arcsec$^{-2}$). From these maps, we construct radial color and stellar mass profiles via SED fitting and find clear negative color gradients in all systems with increasing distance from the Brightest Cluster Galaxy (BCG). While this implies o","authors_text":"2), (2) Tohoku University, (3) AIP, (4) University of Melbourne), Benedetta Vulcani (4), Kasper B. Schmidt (3), Louis E. Abramson (1), Takahiro Morishita (1, Tommaso Treu (1), Xin Wang (1) ((1) UCLA","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-10-26T20:00:00Z","title":"Characterizing Intra-cluster light in the Hubble Frontier Fields"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.08503","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:a82deccc768b448692cdf9d4869bb1fac6237e6945b5ff8ec800f45943ce2af7","target":"record","created_at":"2026-05-18T00:34:52Z","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":"f694fd9c108da48f9ab03c99b815a91d14930b2a103364f45a0724b4be1ea753","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-10-26T20:00:00Z","title_canon_sha256":"c5481a9e98da3d921a350156ba3c32c6d6b833e76fb11b61eb352815e0df11fe"},"schema_version":"1.0","source":{"id":"1610.08503","kind":"arxiv","version":2}},"canonical_sha256":"c4f55dc2b3263d2d5467864080eddce010d2f48394cc8a9c7e1e5e4b9e967c81","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c4f55dc2b3263d2d5467864080eddce010d2f48394cc8a9c7e1e5e4b9e967c81","first_computed_at":"2026-05-18T00:34:52.526474Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:34:52.526474Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sLLc1SGqmPXuFv6d5HLkt0oxFH5csjYvAMsZv1uXjcGC8cZ25888t2DlT8zak6n79DXasMYrUqLMmJ1YtwAAAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:34:52.527122Z","signed_message":"canonical_sha256_bytes"},"source_id":"1610.08503","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a82deccc768b448692cdf9d4869bb1fac6237e6945b5ff8ec800f45943ce2af7","sha256:0eca0295841e8af8910c73ed8bcf9b0809a694d5ad53884d77341210702b7942"],"state_sha256":"eeade365d1d02e1941bb73fdca48932a64e835e36bdeefa4e2823a4b76181618"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bTmT1OuBzxKWiuc75BnOCmGnuPFttC1L5sthyytUaqi/d5ZhG/MVjHyhxHRhhm+Eey/EXmUjG/V7HyxrAgdBDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T15:49:05.643480Z","bundle_sha256":"0f2241f1593dd984708153e61b510bc93f4c238d9044f8b74386663f3091fd69"}}