{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2005:IK4AI6R46S73GKC3F6H6SVBCQN","short_pith_number":"pith:IK4AI6R4","canonical_record":{"source":{"id":"astro-ph/0501072","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-01-05T14:03:14Z","cross_cats_sorted":[],"title_canon_sha256":"8e5e5857d52429accc84975b0321de5ef78ba09663139666b5d8afc9f937a621","abstract_canon_sha256":"08884401d481a035cfc0e9836b6e4fab7169bae855fa7a2f0b5a02bb56ae14c6"},"schema_version":"1.0"},"canonical_sha256":"42b8047a3cf4bfb3285b2f8fe95422835fe0d40331549e89086a213e79fd42c4","source":{"kind":"arxiv","id":"astro-ph/0501072","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0501072","created_at":"2026-07-04T14:14:01Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0501072v1","created_at":"2026-07-04T14:14:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0501072","created_at":"2026-07-04T14:14:01Z"},{"alias_kind":"pith_short_12","alias_value":"IK4AI6R46S73","created_at":"2026-07-04T14:14:01Z"},{"alias_kind":"pith_short_16","alias_value":"IK4AI6R46S73GKC3","created_at":"2026-07-04T14:14:01Z"},{"alias_kind":"pith_short_8","alias_value":"IK4AI6R4","created_at":"2026-07-04T14:14:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2005:IK4AI6R46S73GKC3F6H6SVBCQN","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0501072","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-01-05T14:03:14Z","cross_cats_sorted":[],"title_canon_sha256":"8e5e5857d52429accc84975b0321de5ef78ba09663139666b5d8afc9f937a621","abstract_canon_sha256":"08884401d481a035cfc0e9836b6e4fab7169bae855fa7a2f0b5a02bb56ae14c6"},"schema_version":"1.0"},"canonical_sha256":"42b8047a3cf4bfb3285b2f8fe95422835fe0d40331549e89086a213e79fd42c4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:14:01.912908Z","signature_b64":"RM6tAyLRqkn+FmDwjivPCz7GRwrSxqUg4blqP33CBU5GDZ73L/k1IGwuFTtPDIpkvFkL/+Wu2L6qVSLC5uFRAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"42b8047a3cf4bfb3285b2f8fe95422835fe0d40331549e89086a213e79fd42c4","last_reissued_at":"2026-07-04T14:14:01.912523Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:14:01.912523Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0501072","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":"2026-07-04T14:14:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dFCaLlfXzKRw+8eDafTq4l63SJ/kbUU99bhAV8eiy5FmVKGz7bHAoyVnJqDssBdXiYJaRhOzMM8f7qcCMf1EBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T13:32:42.246174Z"},"content_sha256":"3a3bb7b52b8c04d0b60d1f52246f27be513bb2ba13dc22af00c3166382176430","schema_version":"1.0","event_id":"sha256:3a3bb7b52b8c04d0b60d1f52246f27be513bb2ba13dc22af00c3166382176430"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2005:IK4AI6R46S73GKC3F6H6SVBCQN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modeling CHANDRA Low Energy Transmission Grating Spectrometer Observations of Classical Novae with PHOENIX","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Alexander Petz, Jan-Uwe Ness, Peter H. Hauschildt, Sumner Starrfield","submitted_at":"2005-01-05T14:03:14Z","abstract_excerpt":"We use the PHOENIX code package to model the X-ray spectrum of Nova V4743 Sagittarii observed with the LETGS onboard the Chandra satellite on 19 March 2003. To analyze nova atmospheres and related systems with an underlying nuclear burning envelope at X-ray wavelengths, it was necessary to update the code with new microphysics. We demonstrate that the X-ray emission is dominated by thermal bremsstrahlung and that the hard X-rays are dominated by Fe and N absorption. Preliminary models are calculated assuming solar abundances. It is shown that the models can be used to determine element abundan"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0501072","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/0501072/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":"2026-07-04T14:14:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W3eJkRnnubI/VtTwwMv0GaU3AtpGbxmpOYyu5AzSUFJ/Nib/kyIjs8X2VPIJYJFk9ofCajNOHZwp5uuU61yuDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T13:32:42.246558Z"},"content_sha256":"0e860abca22405cc61535005f1424ee92c221506468ccfe03ddbcbe797569a60","schema_version":"1.0","event_id":"sha256:0e860abca22405cc61535005f1424ee92c221506468ccfe03ddbcbe797569a60"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IK4AI6R46S73GKC3F6H6SVBCQN/bundle.json","state_url":"https://pith.science/pith/IK4AI6R46S73GKC3F6H6SVBCQN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IK4AI6R46S73GKC3F6H6SVBCQN/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":"2026-07-07T13:32:42Z","links":{"resolver":"https://pith.science/pith/IK4AI6R46S73GKC3F6H6SVBCQN","bundle":"https://pith.science/pith/IK4AI6R46S73GKC3F6H6SVBCQN/bundle.json","state":"https://pith.science/pith/IK4AI6R46S73GKC3F6H6SVBCQN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IK4AI6R46S73GKC3F6H6SVBCQN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:IK4AI6R46S73GKC3F6H6SVBCQN","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":"08884401d481a035cfc0e9836b6e4fab7169bae855fa7a2f0b5a02bb56ae14c6","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-01-05T14:03:14Z","title_canon_sha256":"8e5e5857d52429accc84975b0321de5ef78ba09663139666b5d8afc9f937a621"},"schema_version":"1.0","source":{"id":"astro-ph/0501072","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0501072","created_at":"2026-07-04T14:14:01Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0501072v1","created_at":"2026-07-04T14:14:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0501072","created_at":"2026-07-04T14:14:01Z"},{"alias_kind":"pith_short_12","alias_value":"IK4AI6R46S73","created_at":"2026-07-04T14:14:01Z"},{"alias_kind":"pith_short_16","alias_value":"IK4AI6R46S73GKC3","created_at":"2026-07-04T14:14:01Z"},{"alias_kind":"pith_short_8","alias_value":"IK4AI6R4","created_at":"2026-07-04T14:14:01Z"}],"graph_snapshots":[{"event_id":"sha256:0e860abca22405cc61535005f1424ee92c221506468ccfe03ddbcbe797569a60","target":"graph","created_at":"2026-07-04T14:14:01Z","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/0501072/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We use the PHOENIX code package to model the X-ray spectrum of Nova V4743 Sagittarii observed with the LETGS onboard the Chandra satellite on 19 March 2003. To analyze nova atmospheres and related systems with an underlying nuclear burning envelope at X-ray wavelengths, it was necessary to update the code with new microphysics. We demonstrate that the X-ray emission is dominated by thermal bremsstrahlung and that the hard X-rays are dominated by Fe and N absorption. Preliminary models are calculated assuming solar abundances. It is shown that the models can be used to determine element abundan","authors_text":"Alexander Petz, Jan-Uwe Ness, Peter H. Hauschildt, Sumner Starrfield","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2005-01-05T14:03:14Z","title":"Modeling CHANDRA Low Energy Transmission Grating Spectrometer Observations of Classical Novae with PHOENIX"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0501072","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":"sha256:3a3bb7b52b8c04d0b60d1f52246f27be513bb2ba13dc22af00c3166382176430","target":"record","created_at":"2026-07-04T14:14:01Z","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":"08884401d481a035cfc0e9836b6e4fab7169bae855fa7a2f0b5a02bb56ae14c6","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-01-05T14:03:14Z","title_canon_sha256":"8e5e5857d52429accc84975b0321de5ef78ba09663139666b5d8afc9f937a621"},"schema_version":"1.0","source":{"id":"astro-ph/0501072","kind":"arxiv","version":1}},"canonical_sha256":"42b8047a3cf4bfb3285b2f8fe95422835fe0d40331549e89086a213e79fd42c4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"42b8047a3cf4bfb3285b2f8fe95422835fe0d40331549e89086a213e79fd42c4","first_computed_at":"2026-07-04T14:14:01.912523Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:14:01.912523Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RM6tAyLRqkn+FmDwjivPCz7GRwrSxqUg4blqP33CBU5GDZ73L/k1IGwuFTtPDIpkvFkL/+Wu2L6qVSLC5uFRAA==","signature_status":"signed_v1","signed_at":"2026-07-04T14:14:01.912908Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0501072","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3a3bb7b52b8c04d0b60d1f52246f27be513bb2ba13dc22af00c3166382176430","sha256:0e860abca22405cc61535005f1424ee92c221506468ccfe03ddbcbe797569a60"],"state_sha256":"bb0dcb879888dc5f5119d86e79aaeee1453f33f7be5252e057596a3d9791ad80"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Kr9uhSIX2CsN17N/H+PIDMlfcZdNcajvBQUSZaB5T6ZcyEgvKvsvT9kniD2WkrmDHW0kg8MfZy4Pn9tkn7pwAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T13:32:42.248572Z","bundle_sha256":"30cadf68e0cd798e49834f233fe43cd7666d70d21de48db62154adcb30007656"}}