{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2000:Y3TB4AVSFXFSEW6VOA7HC63LTW","short_pith_number":"pith:Y3TB4AVS","canonical_record":{"source":{"id":"astro-ph/0003308","kind":"arxiv","version":4},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-03-21T22:37:48Z","cross_cats_sorted":[],"title_canon_sha256":"dc730a878efcdd866f096c66f37c06f1d79aa8c79d2387d59e17425a9d343d87","abstract_canon_sha256":"7b4e013a097c0c200a14a092f45ea6bc9d12c9d4005ee1d286f4a11075edb2e6"},"schema_version":"1.0"},"canonical_sha256":"c6e61e02b22dcb225bd5703e717b6b9dab79c77ab0fc054da0a4e199c1e1e030","source":{"kind":"arxiv","id":"astro-ph/0003308","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0003308","created_at":"2026-05-18T04:21:42Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0003308v4","created_at":"2026-05-18T04:21:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0003308","created_at":"2026-05-18T04:21:42Z"},{"alias_kind":"pith_short_12","alias_value":"Y3TB4AVSFXFS","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"Y3TB4AVSFXFSEW6V","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"Y3TB4AVS","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2000:Y3TB4AVSFXFSEW6VOA7HC63LTW","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0003308","kind":"arxiv","version":4},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-03-21T22:37:48Z","cross_cats_sorted":[],"title_canon_sha256":"dc730a878efcdd866f096c66f37c06f1d79aa8c79d2387d59e17425a9d343d87","abstract_canon_sha256":"7b4e013a097c0c200a14a092f45ea6bc9d12c9d4005ee1d286f4a11075edb2e6"},"schema_version":"1.0"},"canonical_sha256":"c6e61e02b22dcb225bd5703e717b6b9dab79c77ab0fc054da0a4e199c1e1e030","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:21:42.716728Z","signature_b64":"saTzMYXrnvYdVABXNJCT/gqVVvdfwTU4lq5z/Sp/h0dwuZKG4DhWulKfeLJieFW6w461zRF4pHTVFicwb8lyDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c6e61e02b22dcb225bd5703e717b6b9dab79c77ab0fc054da0a4e199c1e1e030","last_reissued_at":"2026-05-18T04:21:42.716151Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:21:42.716151Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0003308","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:21:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wz7/uJ1LgTIYDRV4EbOgh4Tr7F9iBiiyYCiAVH4ktnpE1Sts9cV7luoY1G/a/ymd8IsLxzxX6BhNfzRsnOTnBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T17:19:39.073309Z"},"content_sha256":"daece46cc1c877ba27c00cfe2aca307ee0b418a676d9fcdba23827affe2b1e43","schema_version":"1.0","event_id":"sha256:daece46cc1c877ba27c00cfe2aca307ee0b418a676d9fcdba23827affe2b1e43"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2000:Y3TB4AVSFXFSEW6VOA7HC63LTW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fourier power spectra at high frequencies: a way to distinguish a neutron star from a black hole","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"1) ((1)-MPA, 2), Garching bei M\\\"unchen, Germany;(2)-Space Research Institute, Moscow, M.Revnivtsev (2, R.Sunyaev (1, Russia)","submitted_at":"2000-03-21T22:37:48Z","abstract_excerpt":"We analyzed the power density spectra of a sample of 9 neutron star and 9 black hole binaries in the low/hard spectral state. In the power density spectra of accreting neutron stars with a weak magnetic field a significant power is contained at frequencies close to one kHz. At the same time, most Galactic accreting black holes demonstrate a strong decline in the power spectra at the frequencies higher than 10--50 Hz. We propose to use this empirical fact as a method to distinguish the accreting neutron stars from black holes in X-ray transients. The X-ray transients that demonstrate significan"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0003308","kind":"arxiv","version":4},"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":"2026-05-18T04:21:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tSGuVnCywIV3cbuRMnvciXicThCNffCvQIz+XA7FxkNYGgEFcaTWDbnp0H3saiSn7w7y6LCE/FIRomZIqqR9Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T17:19:39.073894Z"},"content_sha256":"cfd114f58d31b720d7c9e33d79e017775e4489d9f8deb9afb354e23a6c73315e","schema_version":"1.0","event_id":"sha256:cfd114f58d31b720d7c9e33d79e017775e4489d9f8deb9afb354e23a6c73315e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Y3TB4AVSFXFSEW6VOA7HC63LTW/bundle.json","state_url":"https://pith.science/pith/Y3TB4AVSFXFSEW6VOA7HC63LTW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Y3TB4AVSFXFSEW6VOA7HC63LTW/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":"2026-06-07T17:19:39Z","links":{"resolver":"https://pith.science/pith/Y3TB4AVSFXFSEW6VOA7HC63LTW","bundle":"https://pith.science/pith/Y3TB4AVSFXFSEW6VOA7HC63LTW/bundle.json","state":"https://pith.science/pith/Y3TB4AVSFXFSEW6VOA7HC63LTW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Y3TB4AVSFXFSEW6VOA7HC63LTW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:Y3TB4AVSFXFSEW6VOA7HC63LTW","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":"7b4e013a097c0c200a14a092f45ea6bc9d12c9d4005ee1d286f4a11075edb2e6","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-03-21T22:37:48Z","title_canon_sha256":"dc730a878efcdd866f096c66f37c06f1d79aa8c79d2387d59e17425a9d343d87"},"schema_version":"1.0","source":{"id":"astro-ph/0003308","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0003308","created_at":"2026-05-18T04:21:42Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0003308v4","created_at":"2026-05-18T04:21:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0003308","created_at":"2026-05-18T04:21:42Z"},{"alias_kind":"pith_short_12","alias_value":"Y3TB4AVSFXFS","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"Y3TB4AVSFXFSEW6V","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"Y3TB4AVS","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:cfd114f58d31b720d7c9e33d79e017775e4489d9f8deb9afb354e23a6c73315e","target":"graph","created_at":"2026-05-18T04:21:42Z","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 analyzed the power density spectra of a sample of 9 neutron star and 9 black hole binaries in the low/hard spectral state. In the power density spectra of accreting neutron stars with a weak magnetic field a significant power is contained at frequencies close to one kHz. At the same time, most Galactic accreting black holes demonstrate a strong decline in the power spectra at the frequencies higher than 10--50 Hz. We propose to use this empirical fact as a method to distinguish the accreting neutron stars from black holes in X-ray transients. The X-ray transients that demonstrate significan","authors_text":"1) ((1)-MPA, 2), Garching bei M\\\"unchen, Germany;(2)-Space Research Institute, Moscow, M.Revnivtsev (2, R.Sunyaev (1, Russia)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2000-03-21T22:37:48Z","title":"Fourier power spectra at high frequencies: a way to distinguish a neutron star from a black hole"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0003308","kind":"arxiv","version":4},"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:daece46cc1c877ba27c00cfe2aca307ee0b418a676d9fcdba23827affe2b1e43","target":"record","created_at":"2026-05-18T04:21:42Z","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":"7b4e013a097c0c200a14a092f45ea6bc9d12c9d4005ee1d286f4a11075edb2e6","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-03-21T22:37:48Z","title_canon_sha256":"dc730a878efcdd866f096c66f37c06f1d79aa8c79d2387d59e17425a9d343d87"},"schema_version":"1.0","source":{"id":"astro-ph/0003308","kind":"arxiv","version":4}},"canonical_sha256":"c6e61e02b22dcb225bd5703e717b6b9dab79c77ab0fc054da0a4e199c1e1e030","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c6e61e02b22dcb225bd5703e717b6b9dab79c77ab0fc054da0a4e199c1e1e030","first_computed_at":"2026-05-18T04:21:42.716151Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:21:42.716151Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"saTzMYXrnvYdVABXNJCT/gqVVvdfwTU4lq5z/Sp/h0dwuZKG4DhWulKfeLJieFW6w461zRF4pHTVFicwb8lyDA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:21:42.716728Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0003308","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:daece46cc1c877ba27c00cfe2aca307ee0b418a676d9fcdba23827affe2b1e43","sha256:cfd114f58d31b720d7c9e33d79e017775e4489d9f8deb9afb354e23a6c73315e"],"state_sha256":"c5d31b95119d3c1cfe2fd3b2516616d1f102358eb03028f77d531ef32d8fa0d0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H2gTSwvBQK4tgulyC1hslYpPQ+tE6qua1X4K01/qfE2Jz4DO8M+dH88Y03UTyAPd4pxSHX7MwWB7++HDy8h6Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T17:19:39.076926Z","bundle_sha256":"c68044662a499ef46b27804574872dd97a1ad49e5c727e95ec85fbd443a66013"}}