{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:4CMY777XXFE7S2RT2EVIT4JHSV","short_pith_number":"pith:4CMY777X","schema_version":"1.0","canonical_sha256":"e0998ffff7b949f96a33d12a89f127957a7423fd4ce9afee633f5f31bfc4c488","source":{"kind":"arxiv","id":"1712.02678","version":1},"attestation_state":"computed","paper":{"title":"Glimpses of the past activity of Sgr A* inferred from X-ray echoes in Sgr C","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Andrea Goldwurm, Dimitri Chuard, Gabriele Ponti, Ma\\\"ica Clavel, Maria Chernyakova, Mark R. Morris, Michael Walls, R\\'egis Terrier, Simona Soldi","submitted_at":"2017-12-07T15:43:33Z","abstract_excerpt":"For a decade now, evidence has accumulated that giant molecular clouds located within the central molecular zone of our Galaxy reflect X-rays coming from past outbursts of the supermassive black hole Sgr A*. However, the number of illuminating events as well as their ages and durations are still unresolved questions. We aim to reconstruct parts of the history of Sgr A* by studying this reflection phenomenon in the molecular complex Sgr C and by determining the line-of-sight positions of its main bright substructures. Using observations made with XMM-Newton and Chandra between 2000 and 2014, we"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1712.02678","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-12-07T15:43:33Z","cross_cats_sorted":[],"title_canon_sha256":"dcd7371fb26c8ebde95e5070cae5128f34dbdb9cbe770763b8cc67f9730dfe7d","abstract_canon_sha256":"cb4ddc0fcbe597ccb0c1795f1d2b49ee6605675f5ef75976e4d79daeb1c7fae8"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:22:23.688021Z","signature_b64":"rysZB8X16l1nGgHexSvCq2zfC70Kw7gubDyJzjmlEpuziK+63eSo0Jix8QRj7y3i5KL28tZZdvXvztYJu0r0Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e0998ffff7b949f96a33d12a89f127957a7423fd4ce9afee633f5f31bfc4c488","last_reissued_at":"2026-05-18T00:22:23.687252Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:22:23.687252Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Glimpses of the past activity of Sgr A* inferred from X-ray echoes in Sgr C","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Andrea Goldwurm, Dimitri Chuard, Gabriele Ponti, Ma\\\"ica Clavel, Maria Chernyakova, Mark R. Morris, Michael Walls, R\\'egis Terrier, Simona Soldi","submitted_at":"2017-12-07T15:43:33Z","abstract_excerpt":"For a decade now, evidence has accumulated that giant molecular clouds located within the central molecular zone of our Galaxy reflect X-rays coming from past outbursts of the supermassive black hole Sgr A*. However, the number of illuminating events as well as their ages and durations are still unresolved questions. We aim to reconstruct parts of the history of Sgr A* by studying this reflection phenomenon in the molecular complex Sgr C and by determining the line-of-sight positions of its main bright substructures. Using observations made with XMM-Newton and Chandra between 2000 and 2014, we"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.02678","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1712.02678","created_at":"2026-05-18T00:22:23.687393+00:00"},{"alias_kind":"arxiv_version","alias_value":"1712.02678v1","created_at":"2026-05-18T00:22:23.687393+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.02678","created_at":"2026-05-18T00:22:23.687393+00:00"},{"alias_kind":"pith_short_12","alias_value":"4CMY777XXFE7","created_at":"2026-05-18T12:30:58.224056+00:00"},{"alias_kind":"pith_short_16","alias_value":"4CMY777XXFE7S2RT","created_at":"2026-05-18T12:30:58.224056+00:00"},{"alias_kind":"pith_short_8","alias_value":"4CMY777X","created_at":"2026-05-18T12:30:58.224056+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/4CMY777XXFE7S2RT2EVIT4JHSV","json":"https://pith.science/pith/4CMY777XXFE7S2RT2EVIT4JHSV.json","graph_json":"https://pith.science/api/pith-number/4CMY777XXFE7S2RT2EVIT4JHSV/graph.json","events_json":"https://pith.science/api/pith-number/4CMY777XXFE7S2RT2EVIT4JHSV/events.json","paper":"https://pith.science/paper/4CMY777X"},"agent_actions":{"view_html":"https://pith.science/pith/4CMY777XXFE7S2RT2EVIT4JHSV","download_json":"https://pith.science/pith/4CMY777XXFE7S2RT2EVIT4JHSV.json","view_paper":"https://pith.science/paper/4CMY777X","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1712.02678&json=true","fetch_graph":"https://pith.science/api/pith-number/4CMY777XXFE7S2RT2EVIT4JHSV/graph.json","fetch_events":"https://pith.science/api/pith-number/4CMY777XXFE7S2RT2EVIT4JHSV/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4CMY777XXFE7S2RT2EVIT4JHSV/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4CMY777XXFE7S2RT2EVIT4JHSV/action/storage_attestation","attest_author":"https://pith.science/pith/4CMY777XXFE7S2RT2EVIT4JHSV/action/author_attestation","sign_citation":"https://pith.science/pith/4CMY777XXFE7S2RT2EVIT4JHSV/action/citation_signature","submit_replication":"https://pith.science/pith/4CMY777XXFE7S2RT2EVIT4JHSV/action/replication_record"}},"created_at":"2026-05-18T00:22:23.687393+00:00","updated_at":"2026-05-18T00:22:23.687393+00:00"}