{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:UHCAKVJ2CLT44QKR3M3QQRPRXP","short_pith_number":"pith:UHCAKVJ2","canonical_record":{"source":{"id":"1707.02301","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-07-07T18:00:00Z","cross_cats_sorted":["astro-ph.HE","astro-ph.SR"],"title_canon_sha256":"ac85167f92713c1472be42b3dee2d4b17e0ac582e811f8dbb982571567eb75fc","abstract_canon_sha256":"0f05603dd1cfad4d368b06a0bd2456da6481475c2ecff02b74cb779684d8647f"},"schema_version":"1.0"},"canonical_sha256":"a1c405553a12e7ce4151db370845f1bbeed0b9b9cd8084cf6252423f130a7e36","source":{"kind":"arxiv","id":"1707.02301","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.02301","created_at":"2026-05-18T00:33:49Z"},{"alias_kind":"arxiv_version","alias_value":"1707.02301v1","created_at":"2026-05-18T00:33:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.02301","created_at":"2026-05-18T00:33:49Z"},{"alias_kind":"pith_short_12","alias_value":"UHCAKVJ2CLT4","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_16","alias_value":"UHCAKVJ2CLT44QKR","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_8","alias_value":"UHCAKVJ2","created_at":"2026-05-18T12:31:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:UHCAKVJ2CLT44QKR3M3QQRPRXP","target":"record","payload":{"canonical_record":{"source":{"id":"1707.02301","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-07-07T18:00:00Z","cross_cats_sorted":["astro-ph.HE","astro-ph.SR"],"title_canon_sha256":"ac85167f92713c1472be42b3dee2d4b17e0ac582e811f8dbb982571567eb75fc","abstract_canon_sha256":"0f05603dd1cfad4d368b06a0bd2456da6481475c2ecff02b74cb779684d8647f"},"schema_version":"1.0"},"canonical_sha256":"a1c405553a12e7ce4151db370845f1bbeed0b9b9cd8084cf6252423f130a7e36","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:33:49.210241Z","signature_b64":"UKygjnex9VChTMKHYn3oRW8WZjq2fis2bp2MOEFSDVFbe1ztuXTckgTf05rBdYSC+jWQNIw8KLeUs2j5tyIcAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a1c405553a12e7ce4151db370845f1bbeed0b9b9cd8084cf6252423f130a7e36","last_reissued_at":"2026-05-18T00:33:49.209704Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:33:49.209704Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1707.02301","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":"2026-05-18T00:33:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sCmynZ32RLe7MA8k5WipNUuc8OhSQSVedC7IATIct0EqqZJpB8ImVJ0P9LQ+1UtB0oCMjeyqW0SiTooF4QN9Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:29:06.271026Z"},"content_sha256":"591fe80631d68bf43cc26d66b90469f144d2db32e9c44b2cf0ba9c889232b291","schema_version":"1.0","event_id":"sha256:591fe80631d68bf43cc26d66b90469f144d2db32e9c44b2cf0ba9c889232b291"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:UHCAKVJ2CLT44QKR3M3QQRPRXP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Post-Periapse Evolution of Galactic Center Source G1: The second case of a resolved tidal interaction with a supermassive black hole","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE","astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Andrea M. Ghez, Anna Boehle, Aurelien Hees, Breann. N. Sitarski, Ereic E. Becklin, Greg Martinez, Gunther Witzel, Jessica R. Lu, Keith Matthews, Leo Meyer, Mark R. Morris, Rainer Sch\\\"odel, Samantha Chappell, Smadar Naoz, Sylvana Yelda, Tuan Do","submitted_at":"2017-07-07T18:00:00Z","abstract_excerpt":"We present new Adaptive Optics (AO) imaging and spectroscopic measurements of Galactic Center source G1 from W. M. Keck Observatory. Our goal is to understand its nature and relationship to G2, which is the first example of a spatially-resolved object interacting with the supermassive black hole (SMBH). Both objects have been monitored with AO for the past decade (2003 - 2014) and are comparatively close to the black hole ($a_{\\rm{min}} \\sim$200-300 AU) on very eccentric orbits ($e_{\\rm{G1}}\\sim$0.99; $e_{\\rm{G2}}\\sim$0.96). While G2 has been tracked before and during periapse passage ($T_{0} "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.02301","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":"2026-05-18T00:33:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HMh/tsMnXkmOjjx5NzwnKmp6ewRysJGdqhdUO3oJw5/h6+k78or5mMrrxo3VgYG77mFaHTPIx5COcgZ9PFvABQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:29:06.271539Z"},"content_sha256":"5eb5a259123220837cabb348167cd7b4bb05109a87caa706f4cd5802fcb3b2ff","schema_version":"1.0","event_id":"sha256:5eb5a259123220837cabb348167cd7b4bb05109a87caa706f4cd5802fcb3b2ff"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UHCAKVJ2CLT44QKR3M3QQRPRXP/bundle.json","state_url":"https://pith.science/pith/UHCAKVJ2CLT44QKR3M3QQRPRXP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UHCAKVJ2CLT44QKR3M3QQRPRXP/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":"2026-05-25T18:29:06Z","links":{"resolver":"https://pith.science/pith/UHCAKVJ2CLT44QKR3M3QQRPRXP","bundle":"https://pith.science/pith/UHCAKVJ2CLT44QKR3M3QQRPRXP/bundle.json","state":"https://pith.science/pith/UHCAKVJ2CLT44QKR3M3QQRPRXP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UHCAKVJ2CLT44QKR3M3QQRPRXP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:UHCAKVJ2CLT44QKR3M3QQRPRXP","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":"0f05603dd1cfad4d368b06a0bd2456da6481475c2ecff02b74cb779684d8647f","cross_cats_sorted":["astro-ph.HE","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-07-07T18:00:00Z","title_canon_sha256":"ac85167f92713c1472be42b3dee2d4b17e0ac582e811f8dbb982571567eb75fc"},"schema_version":"1.0","source":{"id":"1707.02301","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.02301","created_at":"2026-05-18T00:33:49Z"},{"alias_kind":"arxiv_version","alias_value":"1707.02301v1","created_at":"2026-05-18T00:33:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.02301","created_at":"2026-05-18T00:33:49Z"},{"alias_kind":"pith_short_12","alias_value":"UHCAKVJ2CLT4","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_16","alias_value":"UHCAKVJ2CLT44QKR","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_8","alias_value":"UHCAKVJ2","created_at":"2026-05-18T12:31:46Z"}],"graph_snapshots":[{"event_id":"sha256:5eb5a259123220837cabb348167cd7b4bb05109a87caa706f4cd5802fcb3b2ff","target":"graph","created_at":"2026-05-18T00:33:49Z","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 Adaptive Optics (AO) imaging and spectroscopic measurements of Galactic Center source G1 from W. M. Keck Observatory. Our goal is to understand its nature and relationship to G2, which is the first example of a spatially-resolved object interacting with the supermassive black hole (SMBH). Both objects have been monitored with AO for the past decade (2003 - 2014) and are comparatively close to the black hole ($a_{\\rm{min}} \\sim$200-300 AU) on very eccentric orbits ($e_{\\rm{G1}}\\sim$0.99; $e_{\\rm{G2}}\\sim$0.96). While G2 has been tracked before and during periapse passage ($T_{0} ","authors_text":"Andrea M. Ghez, Anna Boehle, Aurelien Hees, Breann. N. Sitarski, Ereic E. Becklin, Greg Martinez, Gunther Witzel, Jessica R. Lu, Keith Matthews, Leo Meyer, Mark R. Morris, Rainer Sch\\\"odel, Samantha Chappell, Smadar Naoz, Sylvana Yelda, Tuan Do","cross_cats":["astro-ph.HE","astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-07-07T18:00:00Z","title":"The Post-Periapse Evolution of Galactic Center Source G1: The second case of a resolved tidal interaction with a supermassive black hole"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.02301","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":"sha256:591fe80631d68bf43cc26d66b90469f144d2db32e9c44b2cf0ba9c889232b291","target":"record","created_at":"2026-05-18T00:33:49Z","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":"0f05603dd1cfad4d368b06a0bd2456da6481475c2ecff02b74cb779684d8647f","cross_cats_sorted":["astro-ph.HE","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-07-07T18:00:00Z","title_canon_sha256":"ac85167f92713c1472be42b3dee2d4b17e0ac582e811f8dbb982571567eb75fc"},"schema_version":"1.0","source":{"id":"1707.02301","kind":"arxiv","version":1}},"canonical_sha256":"a1c405553a12e7ce4151db370845f1bbeed0b9b9cd8084cf6252423f130a7e36","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a1c405553a12e7ce4151db370845f1bbeed0b9b9cd8084cf6252423f130a7e36","first_computed_at":"2026-05-18T00:33:49.209704Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:33:49.209704Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UKygjnex9VChTMKHYn3oRW8WZjq2fis2bp2MOEFSDVFbe1ztuXTckgTf05rBdYSC+jWQNIw8KLeUs2j5tyIcAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:33:49.210241Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.02301","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:591fe80631d68bf43cc26d66b90469f144d2db32e9c44b2cf0ba9c889232b291","sha256:5eb5a259123220837cabb348167cd7b4bb05109a87caa706f4cd5802fcb3b2ff"],"state_sha256":"811b5265817d939254a64305020e0dd7f132719948f39773883f1ead08f2e210"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8qAYzGCIe6dmKyYkypnaXK//rwZXvUrqCtKnLDZRfMrUkcSkTrt0g1NzkeDregCK58wnFpzSFSCbpxcE5CV1Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T18:29:06.275263Z","bundle_sha256":"4afab4fceacf8b7ed0189f269b1599e4b3ed83f0adc0ee46ebc61d1d90284e00"}}