{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:P4J4GBQP2KTLMYN6DSDJEFF6YN","short_pith_number":"pith:P4J4GBQP","canonical_record":{"source":{"id":"1412.8163","kind":"arxiv","version":7},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-12-28T13:24:59Z","cross_cats_sorted":[],"title_canon_sha256":"bc840d7d80cc138f6de3a30bb44f75c8ebb098d4c84f251a4bcbd93ee5013c77","abstract_canon_sha256":"e65cc5dcdeefddbf53f02c9a8513270b09d9d9e7a1ce66a1678979d56b5579fc"},"schema_version":"1.0"},"canonical_sha256":"7f13c3060fd2a6b661be1c869214bec34566d966d345a166debb10d8cf0da20f","source":{"kind":"arxiv","id":"1412.8163","version":7},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.8163","created_at":"2026-05-18T02:25:27Z"},{"alias_kind":"arxiv_version","alias_value":"1412.8163v7","created_at":"2026-05-18T02:25:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.8163","created_at":"2026-05-18T02:25:27Z"},{"alias_kind":"pith_short_12","alias_value":"P4J4GBQP2KTL","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_16","alias_value":"P4J4GBQP2KTLMYN6","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_8","alias_value":"P4J4GBQP","created_at":"2026-05-18T12:28:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:P4J4GBQP2KTLMYN6DSDJEFF6YN","target":"record","payload":{"canonical_record":{"source":{"id":"1412.8163","kind":"arxiv","version":7},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-12-28T13:24:59Z","cross_cats_sorted":[],"title_canon_sha256":"bc840d7d80cc138f6de3a30bb44f75c8ebb098d4c84f251a4bcbd93ee5013c77","abstract_canon_sha256":"e65cc5dcdeefddbf53f02c9a8513270b09d9d9e7a1ce66a1678979d56b5579fc"},"schema_version":"1.0"},"canonical_sha256":"7f13c3060fd2a6b661be1c869214bec34566d966d345a166debb10d8cf0da20f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:25:27.650468Z","signature_b64":"rt8cVUHIQNYaDqgvEUursyP8MDQfIxO6147SqcCHVi+ToNcF0SwvooLdI2YHLq+EFh0P9US/Gw/6MLPn27ZJDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7f13c3060fd2a6b661be1c869214bec34566d966d345a166debb10d8cf0da20f","last_reissued_at":"2026-05-18T02:25:27.650082Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:25:27.650082Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1412.8163","source_version":7,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:25:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mFrzTxycTPx6p7155LCztPlZBsmtVxqbQKZwrxmWZRjK4Lpaa3RP47mq7Ikc58qYGV4uufX5EqJ8Q+bbcg76AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T22:47:58.162339Z"},"content_sha256":"23af0e9416c9269e9ba4ff6908b6ba4dd5d7659896352f5501eb9c7d3a516af6","schema_version":"1.0","event_id":"sha256:23af0e9416c9269e9ba4ff6908b6ba4dd5d7659896352f5501eb9c7d3a516af6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:P4J4GBQP2KTLMYN6DSDJEFF6YN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The spatial, spectral and polarization properties of solar flare X-ray sources","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Natasha L. S. Jeffrey","submitted_at":"2014-12-28T13:24:59Z","abstract_excerpt":"X-rays are a valuable diagnostic tool for the study of high energy accelerated electrons. Bremsstrahlung X-rays produced by, and directly related to, high energy electrons accelerated during a flare, provide a powerful diagnostic tool for determining both the properties of the accelerated electron distribution, and of the flaring coronal and chromospheric plasmas. This thesis is specifically concerned with the study of spatial, spectral and polarization properties of solar flare X-ray sources via both modelling and X-ray observations using the Ramaty High Energy Solar Spectroscopic Imager (RHE"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.8163","kind":"arxiv","version":7},"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":"2026-05-18T02:25:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ae+01XDjPWEJwsDoqFHCSQ46WZobOUTQwgKdtUkmIB3eOJgqwh7SBPH3+i+v0rtAjYTp7w3yOQ1W3+9ViANzCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T22:47:58.162978Z"},"content_sha256":"b4fee6c2ca0f322faf4ba2b68d215c7dca703dc77f17d0aa44bde007f224cbfb","schema_version":"1.0","event_id":"sha256:b4fee6c2ca0f322faf4ba2b68d215c7dca703dc77f17d0aa44bde007f224cbfb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/P4J4GBQP2KTLMYN6DSDJEFF6YN/bundle.json","state_url":"https://pith.science/pith/P4J4GBQP2KTLMYN6DSDJEFF6YN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/P4J4GBQP2KTLMYN6DSDJEFF6YN/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":"2026-05-29T22:47:58Z","links":{"resolver":"https://pith.science/pith/P4J4GBQP2KTLMYN6DSDJEFF6YN","bundle":"https://pith.science/pith/P4J4GBQP2KTLMYN6DSDJEFF6YN/bundle.json","state":"https://pith.science/pith/P4J4GBQP2KTLMYN6DSDJEFF6YN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/P4J4GBQP2KTLMYN6DSDJEFF6YN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:P4J4GBQP2KTLMYN6DSDJEFF6YN","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":"e65cc5dcdeefddbf53f02c9a8513270b09d9d9e7a1ce66a1678979d56b5579fc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-12-28T13:24:59Z","title_canon_sha256":"bc840d7d80cc138f6de3a30bb44f75c8ebb098d4c84f251a4bcbd93ee5013c77"},"schema_version":"1.0","source":{"id":"1412.8163","kind":"arxiv","version":7}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.8163","created_at":"2026-05-18T02:25:27Z"},{"alias_kind":"arxiv_version","alias_value":"1412.8163v7","created_at":"2026-05-18T02:25:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.8163","created_at":"2026-05-18T02:25:27Z"},{"alias_kind":"pith_short_12","alias_value":"P4J4GBQP2KTL","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_16","alias_value":"P4J4GBQP2KTLMYN6","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_8","alias_value":"P4J4GBQP","created_at":"2026-05-18T12:28:43Z"}],"graph_snapshots":[{"event_id":"sha256:b4fee6c2ca0f322faf4ba2b68d215c7dca703dc77f17d0aa44bde007f224cbfb","target":"graph","created_at":"2026-05-18T02:25:27Z","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":"X-rays are a valuable diagnostic tool for the study of high energy accelerated electrons. Bremsstrahlung X-rays produced by, and directly related to, high energy electrons accelerated during a flare, provide a powerful diagnostic tool for determining both the properties of the accelerated electron distribution, and of the flaring coronal and chromospheric plasmas. This thesis is specifically concerned with the study of spatial, spectral and polarization properties of solar flare X-ray sources via both modelling and X-ray observations using the Ramaty High Energy Solar Spectroscopic Imager (RHE","authors_text":"Natasha L. S. Jeffrey","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-12-28T13:24:59Z","title":"The spatial, spectral and polarization properties of solar flare X-ray sources"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.8163","kind":"arxiv","version":7},"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":"sha256:23af0e9416c9269e9ba4ff6908b6ba4dd5d7659896352f5501eb9c7d3a516af6","target":"record","created_at":"2026-05-18T02:25:27Z","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":"e65cc5dcdeefddbf53f02c9a8513270b09d9d9e7a1ce66a1678979d56b5579fc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-12-28T13:24:59Z","title_canon_sha256":"bc840d7d80cc138f6de3a30bb44f75c8ebb098d4c84f251a4bcbd93ee5013c77"},"schema_version":"1.0","source":{"id":"1412.8163","kind":"arxiv","version":7}},"canonical_sha256":"7f13c3060fd2a6b661be1c869214bec34566d966d345a166debb10d8cf0da20f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7f13c3060fd2a6b661be1c869214bec34566d966d345a166debb10d8cf0da20f","first_computed_at":"2026-05-18T02:25:27.650082Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:25:27.650082Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rt8cVUHIQNYaDqgvEUursyP8MDQfIxO6147SqcCHVi+ToNcF0SwvooLdI2YHLq+EFh0P9US/Gw/6MLPn27ZJDA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:25:27.650468Z","signed_message":"canonical_sha256_bytes"},"source_id":"1412.8163","source_kind":"arxiv","source_version":7}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:23af0e9416c9269e9ba4ff6908b6ba4dd5d7659896352f5501eb9c7d3a516af6","sha256:b4fee6c2ca0f322faf4ba2b68d215c7dca703dc77f17d0aa44bde007f224cbfb"],"state_sha256":"992a6315a562e33cc4993d4cc81d31593d6dc2f7632fd8a43d8f1e18f09b3cb8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8izPxd5NuF+3vxVo34AHAT34IsLxui2oW4nSZqZPit2FMEp2R7MIg1aVi+LdnzcEm54FswqT+vyeZ9b3h0DzAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T22:47:58.166834Z","bundle_sha256":"19427ba672658b19517ba977ac25974bf297b7c8be60db4f5ac48dcb3cd2ea12"}}