{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1999:CXTP7TTDLEDS574CU6WRI5RLL7","short_pith_number":"pith:CXTP7TTD","canonical_record":{"source":{"id":"astro-ph/9911335","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1999-11-17T16:03:43Z","cross_cats_sorted":[],"title_canon_sha256":"8b2b6d76b393f8a3e034eca4e037c19a9e39746954effdf8b3cf1497cb5ce4ad","abstract_canon_sha256":"a9d98b183109c14e5cf4be05838a7c566e7dc44e10dc121374572ccc3fba35fa"},"schema_version":"1.0"},"canonical_sha256":"15e6ffce6359072eff82a7ad14762b5fdc8d99721c5f7682098ff5fb74a4dc53","source":{"kind":"arxiv","id":"astro-ph/9911335","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9911335","created_at":"2026-07-04T16:11:54Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9911335v1","created_at":"2026-07-04T16:11:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9911335","created_at":"2026-07-04T16:11:54Z"},{"alias_kind":"pith_short_12","alias_value":"CXTP7TTDLEDS","created_at":"2026-07-04T16:11:54Z"},{"alias_kind":"pith_short_16","alias_value":"CXTP7TTDLEDS574C","created_at":"2026-07-04T16:11:54Z"},{"alias_kind":"pith_short_8","alias_value":"CXTP7TTD","created_at":"2026-07-04T16:11:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1999:CXTP7TTDLEDS574CU6WRI5RLL7","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9911335","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1999-11-17T16:03:43Z","cross_cats_sorted":[],"title_canon_sha256":"8b2b6d76b393f8a3e034eca4e037c19a9e39746954effdf8b3cf1497cb5ce4ad","abstract_canon_sha256":"a9d98b183109c14e5cf4be05838a7c566e7dc44e10dc121374572ccc3fba35fa"},"schema_version":"1.0"},"canonical_sha256":"15e6ffce6359072eff82a7ad14762b5fdc8d99721c5f7682098ff5fb74a4dc53","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:11:54.950603Z","signature_b64":"o78CYu2GtNf2f/Vb3I/MbLxWnK2LWHB0PHmUJrl+luY4naoM45X2sZtluS8Iw6t3WRy/IN+sk1B4RNjBv1JnBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"15e6ffce6359072eff82a7ad14762b5fdc8d99721c5f7682098ff5fb74a4dc53","last_reissued_at":"2026-07-04T16:11:54.950259Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:11:54.950259Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9911335","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":"2026-07-04T16:11:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HW+p+M5Xm5rqoVUGmVzx+4lsDmm1PFrf2WtFV39BoAihMfJhXD/LCIjsHBR6e256BL3dpMs0elnTAKR01k5DAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T18:43:16.410484Z"},"content_sha256":"4f88af0ec34e85b382e2454ef44ef3bd5114598ebaceb6af8aa5e38784afab92","schema_version":"1.0","event_id":"sha256:4f88af0ec34e85b382e2454ef44ef3bd5114598ebaceb6af8aa5e38784afab92"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1999:CXTP7TTDLEDS574CU6WRI5RLL7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Nonthermal Bremsstrahlung and Hard X-ray Emission from Clusters of Galaxies","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Craig L. Sarazin, Joshua C. Kempner","submitted_at":"1999-11-17T16:03:43Z","abstract_excerpt":"We have calculated nonthermal bremsstrahlung (NTB) models for the hard X-ray (HXR) tails recently observed by BeppoSAX in clusters of galaxies. In these models, the HXR emission is due to suprathermal electrons with energies of about 10-200 keV. Under the assumption that the suprathermal electrons form part of a continuous spectrum of electrons including highly relativistic particles, we have calculated the inverse Compton (IC) extreme ultraviolet (EUV), HXR, and radio synchrotron emission by the extensions of the same populations. For accelerating electron models with power-law momentum spect"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9911335","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/9911335/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":"2026-07-04T16:11:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fU6P+vKqFZyy5SR0hWqUSI5P2wznOzIgj7jQzVUQVwsuFXUi59oNTuNNLBPCZ+FBKZ/nA8bXvZHQN6ifxedmBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T18:43:16.410983Z"},"content_sha256":"27b5e23f3d9f75e947603d7beefdf472c42ad24391f086c060fa1f4f90312fd2","schema_version":"1.0","event_id":"sha256:27b5e23f3d9f75e947603d7beefdf472c42ad24391f086c060fa1f4f90312fd2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CXTP7TTDLEDS574CU6WRI5RLL7/bundle.json","state_url":"https://pith.science/pith/CXTP7TTDLEDS574CU6WRI5RLL7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CXTP7TTDLEDS574CU6WRI5RLL7/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":"2026-08-09T18:43:16Z","links":{"resolver":"https://pith.science/pith/CXTP7TTDLEDS574CU6WRI5RLL7","bundle":"https://pith.science/pith/CXTP7TTDLEDS574CU6WRI5RLL7/bundle.json","state":"https://pith.science/pith/CXTP7TTDLEDS574CU6WRI5RLL7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CXTP7TTDLEDS574CU6WRI5RLL7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:CXTP7TTDLEDS574CU6WRI5RLL7","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":"a9d98b183109c14e5cf4be05838a7c566e7dc44e10dc121374572ccc3fba35fa","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1999-11-17T16:03:43Z","title_canon_sha256":"8b2b6d76b393f8a3e034eca4e037c19a9e39746954effdf8b3cf1497cb5ce4ad"},"schema_version":"1.0","source":{"id":"astro-ph/9911335","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9911335","created_at":"2026-07-04T16:11:54Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9911335v1","created_at":"2026-07-04T16:11:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9911335","created_at":"2026-07-04T16:11:54Z"},{"alias_kind":"pith_short_12","alias_value":"CXTP7TTDLEDS","created_at":"2026-07-04T16:11:54Z"},{"alias_kind":"pith_short_16","alias_value":"CXTP7TTDLEDS574C","created_at":"2026-07-04T16:11:54Z"},{"alias_kind":"pith_short_8","alias_value":"CXTP7TTD","created_at":"2026-07-04T16:11:54Z"}],"graph_snapshots":[{"event_id":"sha256:27b5e23f3d9f75e947603d7beefdf472c42ad24391f086c060fa1f4f90312fd2","target":"graph","created_at":"2026-07-04T16:11:54Z","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/9911335/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We have calculated nonthermal bremsstrahlung (NTB) models for the hard X-ray (HXR) tails recently observed by BeppoSAX in clusters of galaxies. In these models, the HXR emission is due to suprathermal electrons with energies of about 10-200 keV. Under the assumption that the suprathermal electrons form part of a continuous spectrum of electrons including highly relativistic particles, we have calculated the inverse Compton (IC) extreme ultraviolet (EUV), HXR, and radio synchrotron emission by the extensions of the same populations. For accelerating electron models with power-law momentum spect","authors_text":"Craig L. Sarazin, Joshua C. Kempner","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1999-11-17T16:03:43Z","title":"Nonthermal Bremsstrahlung and Hard X-ray Emission from Clusters of Galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9911335","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":"sha256:4f88af0ec34e85b382e2454ef44ef3bd5114598ebaceb6af8aa5e38784afab92","target":"record","created_at":"2026-07-04T16:11:54Z","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":"a9d98b183109c14e5cf4be05838a7c566e7dc44e10dc121374572ccc3fba35fa","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1999-11-17T16:03:43Z","title_canon_sha256":"8b2b6d76b393f8a3e034eca4e037c19a9e39746954effdf8b3cf1497cb5ce4ad"},"schema_version":"1.0","source":{"id":"astro-ph/9911335","kind":"arxiv","version":1}},"canonical_sha256":"15e6ffce6359072eff82a7ad14762b5fdc8d99721c5f7682098ff5fb74a4dc53","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"15e6ffce6359072eff82a7ad14762b5fdc8d99721c5f7682098ff5fb74a4dc53","first_computed_at":"2026-07-04T16:11:54.950259Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:11:54.950259Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"o78CYu2GtNf2f/Vb3I/MbLxWnK2LWHB0PHmUJrl+luY4naoM45X2sZtluS8Iw6t3WRy/IN+sk1B4RNjBv1JnBA==","signature_status":"signed_v1","signed_at":"2026-07-04T16:11:54.950603Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9911335","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4f88af0ec34e85b382e2454ef44ef3bd5114598ebaceb6af8aa5e38784afab92","sha256:27b5e23f3d9f75e947603d7beefdf472c42ad24391f086c060fa1f4f90312fd2"],"state_sha256":"1eeb85d9cbbcfa340bbdb9111885460c7a30308ef886db3f49715cd56ed71e33"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"guEw/O1xm1lG6TafMTNwhNToWuiGjCa1XaCf3VmleHS35dhnmfho+iiENJrLRcYiZ37ZEygBqmiUjE575oCLDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T18:43:16.414950Z","bundle_sha256":"db9e1d6e48eab5e49d3fcaeb69b8a69fb80eb2c3b1961a5c8e27df52e39e78ee"}}