{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:SI3ZOKOQUN5F7DOOV7LHKQGXSK","short_pith_number":"pith:SI3ZOKOQ","canonical_record":{"source":{"id":"astro-ph/0402568","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-02-24T15:13:07Z","cross_cats_sorted":[],"title_canon_sha256":"b55270a9c2de03e74860173774048921195e5ef8d833ebedda52d256b0255d79","abstract_canon_sha256":"92de48f180f6145cdc4a620b5a13e2093843efa717dbcf62051489804f643e01"},"schema_version":"1.0"},"canonical_sha256":"92379729d0a37a5f8dceafd67540d79297d231215baa25c2b3f2493ab488ba2c","source":{"kind":"arxiv","id":"astro-ph/0402568","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0402568","created_at":"2026-07-04T16:43:06Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0402568v1","created_at":"2026-07-04T16:43:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0402568","created_at":"2026-07-04T16:43:06Z"},{"alias_kind":"pith_short_12","alias_value":"SI3ZOKOQUN5F","created_at":"2026-07-04T16:43:06Z"},{"alias_kind":"pith_short_16","alias_value":"SI3ZOKOQUN5F7DOO","created_at":"2026-07-04T16:43:06Z"},{"alias_kind":"pith_short_8","alias_value":"SI3ZOKOQ","created_at":"2026-07-04T16:43:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:SI3ZOKOQUN5F7DOOV7LHKQGXSK","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0402568","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-02-24T15:13:07Z","cross_cats_sorted":[],"title_canon_sha256":"b55270a9c2de03e74860173774048921195e5ef8d833ebedda52d256b0255d79","abstract_canon_sha256":"92de48f180f6145cdc4a620b5a13e2093843efa717dbcf62051489804f643e01"},"schema_version":"1.0"},"canonical_sha256":"92379729d0a37a5f8dceafd67540d79297d231215baa25c2b3f2493ab488ba2c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:43:06.238573Z","signature_b64":"AVFFIqre6kt8ldkeeWPD0JTKNEuidaUnFVNZVrfU0GieJNZuHmiBg0Hd6F5MvFxpPJF4g2mVdHAW/xpt7URFBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"92379729d0a37a5f8dceafd67540d79297d231215baa25c2b3f2493ab488ba2c","last_reissued_at":"2026-07-04T16:43:06.238205Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:43:06.238205Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0402568","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":"2026-07-04T16:43:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2HeOInaWVlsRT1QpdSRhxKqaHY00veeP9NEZSRQM/0GfYuCD0zkjzt5UheV3NomWGc3Ft89rlXDAmy+36nagDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T20:45:59.949677Z"},"content_sha256":"533edd97962cd40051898a7766a61a1868893b6cf910fb59e49b084f9aa6e72e","schema_version":"1.0","event_id":"sha256:533edd97962cd40051898a7766a61a1868893b6cf910fb59e49b084f9aa6e72e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:SI3ZOKOQUN5F7DOOV7LHKQGXSK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"2-10 keV luminosity of high-mass binaries as a gauge of ongoing star-formation rate","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Franceschini, D. E. Gruber, M. Cappi, M. Persic, R. Della Ceca, V. Braito, Y. Rephaeli","submitted_at":"2004-02-24T15:13:07Z","abstract_excerpt":"Based on recent work on spectral decomposition of the emission of star-forming galaxies, we assess whether the integrated 2-10 keV emission from high-mass X-ray binaries (HMXBs), L_{2-10}^{HMXB}, can be used as a reliable estimator of ongoing star formation rate (SFR). Using a sample of 46 local (z < 0.1) star forming galaxies, and spectral modeling of ASCA, BeppoSAX, and XMM-Newton data, we demonstrate the existence of a linear SFR-L_{2-10}^{HMXB} relation which holds over ~5 decades in X-ray luminosity and SFR. The total 2-10 keV luminosity is not a precise SFR indicator because at low SFR ("},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0402568","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0402568/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T16:43:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VfIAhJpAFEd2Bxqd5JuwwJRzpkyqHTQ065phIFGNsjRNAzmzwel/hpWM2wFD98Hwj6NN5oCORB3mPFZ3aQQ5Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T20:45:59.950187Z"},"content_sha256":"cd7f58c20ce32c673ff574e32a0dfc97b1bd86f7ab6e49a4e61e53da1df7cc43","schema_version":"1.0","event_id":"sha256:cd7f58c20ce32c673ff574e32a0dfc97b1bd86f7ab6e49a4e61e53da1df7cc43"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SI3ZOKOQUN5F7DOOV7LHKQGXSK/bundle.json","state_url":"https://pith.science/pith/SI3ZOKOQUN5F7DOOV7LHKQGXSK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SI3ZOKOQUN5F7DOOV7LHKQGXSK/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":"2026-08-13T20:45:59Z","links":{"resolver":"https://pith.science/pith/SI3ZOKOQUN5F7DOOV7LHKQGXSK","bundle":"https://pith.science/pith/SI3ZOKOQUN5F7DOOV7LHKQGXSK/bundle.json","state":"https://pith.science/pith/SI3ZOKOQUN5F7DOOV7LHKQGXSK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SI3ZOKOQUN5F7DOOV7LHKQGXSK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:SI3ZOKOQUN5F7DOOV7LHKQGXSK","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":"92de48f180f6145cdc4a620b5a13e2093843efa717dbcf62051489804f643e01","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-02-24T15:13:07Z","title_canon_sha256":"b55270a9c2de03e74860173774048921195e5ef8d833ebedda52d256b0255d79"},"schema_version":"1.0","source":{"id":"astro-ph/0402568","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0402568","created_at":"2026-07-04T16:43:06Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0402568v1","created_at":"2026-07-04T16:43:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0402568","created_at":"2026-07-04T16:43:06Z"},{"alias_kind":"pith_short_12","alias_value":"SI3ZOKOQUN5F","created_at":"2026-07-04T16:43:06Z"},{"alias_kind":"pith_short_16","alias_value":"SI3ZOKOQUN5F7DOO","created_at":"2026-07-04T16:43:06Z"},{"alias_kind":"pith_short_8","alias_value":"SI3ZOKOQ","created_at":"2026-07-04T16:43:06Z"}],"graph_snapshots":[{"event_id":"sha256:cd7f58c20ce32c673ff574e32a0dfc97b1bd86f7ab6e49a4e61e53da1df7cc43","target":"graph","created_at":"2026-07-04T16:43:06Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/0402568/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Based on recent work on spectral decomposition of the emission of star-forming galaxies, we assess whether the integrated 2-10 keV emission from high-mass X-ray binaries (HMXBs), L_{2-10}^{HMXB}, can be used as a reliable estimator of ongoing star formation rate (SFR). Using a sample of 46 local (z < 0.1) star forming galaxies, and spectral modeling of ASCA, BeppoSAX, and XMM-Newton data, we demonstrate the existence of a linear SFR-L_{2-10}^{HMXB} relation which holds over ~5 decades in X-ray luminosity and SFR. The total 2-10 keV luminosity is not a precise SFR indicator because at low SFR (","authors_text":"A. Franceschini, D. E. Gruber, M. Cappi, M. Persic, R. Della Ceca, V. Braito, Y. Rephaeli","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-02-24T15:13:07Z","title":"2-10 keV luminosity of high-mass binaries as a gauge of ongoing star-formation rate"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0402568","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":"sha256:533edd97962cd40051898a7766a61a1868893b6cf910fb59e49b084f9aa6e72e","target":"record","created_at":"2026-07-04T16:43:06Z","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":"92de48f180f6145cdc4a620b5a13e2093843efa717dbcf62051489804f643e01","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-02-24T15:13:07Z","title_canon_sha256":"b55270a9c2de03e74860173774048921195e5ef8d833ebedda52d256b0255d79"},"schema_version":"1.0","source":{"id":"astro-ph/0402568","kind":"arxiv","version":1}},"canonical_sha256":"92379729d0a37a5f8dceafd67540d79297d231215baa25c2b3f2493ab488ba2c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"92379729d0a37a5f8dceafd67540d79297d231215baa25c2b3f2493ab488ba2c","first_computed_at":"2026-07-04T16:43:06.238205Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:43:06.238205Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AVFFIqre6kt8ldkeeWPD0JTKNEuidaUnFVNZVrfU0GieJNZuHmiBg0Hd6F5MvFxpPJF4g2mVdHAW/xpt7URFBQ==","signature_status":"signed_v1","signed_at":"2026-07-04T16:43:06.238573Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0402568","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:533edd97962cd40051898a7766a61a1868893b6cf910fb59e49b084f9aa6e72e","sha256:cd7f58c20ce32c673ff574e32a0dfc97b1bd86f7ab6e49a4e61e53da1df7cc43"],"state_sha256":"5d1b52f08561a97e24e575c8ff446299cf5b0ddb50bff9b85dd02066202757ab"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4ThUp8rFjbJSFmTONrJwZNf4hC3JH1CJ4zn2WSvcV0KW3ljiDvOLNMdblLp/7X4dcPeY6n2OQspIwN1wC++KDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T20:45:59.958293Z","bundle_sha256":"ecff345b0c09c37fb5b7a07f9c3391e219893dca1864070f1ed08cb4022d7b19"}}