{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:2AN4LOUW4L6FLP3DQ4XPJZ7GSF","short_pith_number":"pith:2AN4LOUW","canonical_record":{"source":{"id":"1501.06382","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-01-26T13:23:34Z","cross_cats_sorted":[],"title_canon_sha256":"71c67693c1fa7053c309597e07c43c7dab2fd523608316efe85fc12fba82c8a8","abstract_canon_sha256":"afd01a8adba3c995f752b05c583828d5bce061ebaf8d162a96d2d790c84c2d3d"},"schema_version":"1.0"},"canonical_sha256":"d01bc5ba96e2fc55bf63872ef4e7e691702bd92ccb816d4804b24cc39fc60866","source":{"kind":"arxiv","id":"1501.06382","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.06382","created_at":"2026-05-18T01:41:08Z"},{"alias_kind":"arxiv_version","alias_value":"1501.06382v1","created_at":"2026-05-18T01:41:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.06382","created_at":"2026-05-18T01:41:08Z"},{"alias_kind":"pith_short_12","alias_value":"2AN4LOUW4L6F","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"2AN4LOUW4L6FLP3D","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"2AN4LOUW","created_at":"2026-05-18T12:28:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:2AN4LOUW4L6FLP3DQ4XPJZ7GSF","target":"record","payload":{"canonical_record":{"source":{"id":"1501.06382","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-01-26T13:23:34Z","cross_cats_sorted":[],"title_canon_sha256":"71c67693c1fa7053c309597e07c43c7dab2fd523608316efe85fc12fba82c8a8","abstract_canon_sha256":"afd01a8adba3c995f752b05c583828d5bce061ebaf8d162a96d2d790c84c2d3d"},"schema_version":"1.0"},"canonical_sha256":"d01bc5ba96e2fc55bf63872ef4e7e691702bd92ccb816d4804b24cc39fc60866","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:41:08.664511Z","signature_b64":"Onu1SWNuZrzOa17HhY2aDG40JcJQQf7mQVqXeo89TBwizXrwn4/MBCeciZMiu4Fg2A7s6Jpy+0eJWczBIKsLAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d01bc5ba96e2fc55bf63872ef4e7e691702bd92ccb816d4804b24cc39fc60866","last_reissued_at":"2026-05-18T01:41:08.663732Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:41:08.663732Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1501.06382","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":"2026-05-18T01:41:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"97p9aUNAdFcAqe0A9fNnPRir+78GtC+HJLPZYKk0G7ZwwIUO/m1LyLX8SwgbSB4OWSlYOoHRKEuH3Nvn0u73Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T14:15:03.671765Z"},"content_sha256":"8e9b14fee376fbb7e6cc4be4a5f949d6e8242b5e62e871410e19c6af2758e586","schema_version":"1.0","event_id":"sha256:8e9b14fee376fbb7e6cc4be4a5f949d6e8242b5e62e871410e19c6af2758e586"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:2AN4LOUW4L6FLP3DQ4XPJZ7GSF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Three-dimensional radiative transfer simulations of the scattering polarization of the hydrogen Ly$\\alpha$ line in a MHD model of the chromosphere-corona transition region","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Javier Trujillo Bueno, Jiri Stepan, Jorrit Leenaarts, Mats Carlsson","submitted_at":"2015-01-26T13:23:34Z","abstract_excerpt":"Probing the magnetism of the upper solar chromosphere requires measuring and modeling the scattering polarization produced by anisotropic radiation pumping in UV spectral lines. Here we apply PORTA (a novel radiative transfer code) to investigate the hydrogen Ly$\\alpha$ line in a 3D model of the solar atmosphere resulting from a state of the art MHD simulation. At full spatial resolution the linear polarization signals are very significant all over the solar disk, with a large fraction of the field of view showing line-center amplitudes well above the 1% level. Via the Hanle effect the line-ce"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.06382","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":""},"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":"2026-05-18T01:41:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hPUJ67P9gM5RTtnKzsAeD4hWm/qzcTzoqv45ASyVt00qNVCvZWAvrLs2HuBWOlBO6SMJ0ffYk6OGpJckHBTxAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T14:15:03.672142Z"},"content_sha256":"22d599c4e77f091520c814ecab2bf53dc24bce1a19555c3360bb1ff60ebce38d","schema_version":"1.0","event_id":"sha256:22d599c4e77f091520c814ecab2bf53dc24bce1a19555c3360bb1ff60ebce38d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2AN4LOUW4L6FLP3DQ4XPJZ7GSF/bundle.json","state_url":"https://pith.science/pith/2AN4LOUW4L6FLP3DQ4XPJZ7GSF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2AN4LOUW4L6FLP3DQ4XPJZ7GSF/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":"2026-05-28T14:15:03Z","links":{"resolver":"https://pith.science/pith/2AN4LOUW4L6FLP3DQ4XPJZ7GSF","bundle":"https://pith.science/pith/2AN4LOUW4L6FLP3DQ4XPJZ7GSF/bundle.json","state":"https://pith.science/pith/2AN4LOUW4L6FLP3DQ4XPJZ7GSF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2AN4LOUW4L6FLP3DQ4XPJZ7GSF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:2AN4LOUW4L6FLP3DQ4XPJZ7GSF","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":"afd01a8adba3c995f752b05c583828d5bce061ebaf8d162a96d2d790c84c2d3d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-01-26T13:23:34Z","title_canon_sha256":"71c67693c1fa7053c309597e07c43c7dab2fd523608316efe85fc12fba82c8a8"},"schema_version":"1.0","source":{"id":"1501.06382","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.06382","created_at":"2026-05-18T01:41:08Z"},{"alias_kind":"arxiv_version","alias_value":"1501.06382v1","created_at":"2026-05-18T01:41:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.06382","created_at":"2026-05-18T01:41:08Z"},{"alias_kind":"pith_short_12","alias_value":"2AN4LOUW4L6F","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"2AN4LOUW4L6FLP3D","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"2AN4LOUW","created_at":"2026-05-18T12:28:59Z"}],"graph_snapshots":[{"event_id":"sha256:22d599c4e77f091520c814ecab2bf53dc24bce1a19555c3360bb1ff60ebce38d","target":"graph","created_at":"2026-05-18T01:41:08Z","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":"Probing the magnetism of the upper solar chromosphere requires measuring and modeling the scattering polarization produced by anisotropic radiation pumping in UV spectral lines. Here we apply PORTA (a novel radiative transfer code) to investigate the hydrogen Ly$\\alpha$ line in a 3D model of the solar atmosphere resulting from a state of the art MHD simulation. At full spatial resolution the linear polarization signals are very significant all over the solar disk, with a large fraction of the field of view showing line-center amplitudes well above the 1% level. Via the Hanle effect the line-ce","authors_text":"Javier Trujillo Bueno, Jiri Stepan, Jorrit Leenaarts, Mats Carlsson","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-01-26T13:23:34Z","title":"Three-dimensional radiative transfer simulations of the scattering polarization of the hydrogen Ly$\\alpha$ line in a MHD model of the chromosphere-corona transition region"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.06382","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":"sha256:8e9b14fee376fbb7e6cc4be4a5f949d6e8242b5e62e871410e19c6af2758e586","target":"record","created_at":"2026-05-18T01:41:08Z","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":"afd01a8adba3c995f752b05c583828d5bce061ebaf8d162a96d2d790c84c2d3d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-01-26T13:23:34Z","title_canon_sha256":"71c67693c1fa7053c309597e07c43c7dab2fd523608316efe85fc12fba82c8a8"},"schema_version":"1.0","source":{"id":"1501.06382","kind":"arxiv","version":1}},"canonical_sha256":"d01bc5ba96e2fc55bf63872ef4e7e691702bd92ccb816d4804b24cc39fc60866","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d01bc5ba96e2fc55bf63872ef4e7e691702bd92ccb816d4804b24cc39fc60866","first_computed_at":"2026-05-18T01:41:08.663732Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:41:08.663732Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Onu1SWNuZrzOa17HhY2aDG40JcJQQf7mQVqXeo89TBwizXrwn4/MBCeciZMiu4Fg2A7s6Jpy+0eJWczBIKsLAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:41:08.664511Z","signed_message":"canonical_sha256_bytes"},"source_id":"1501.06382","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8e9b14fee376fbb7e6cc4be4a5f949d6e8242b5e62e871410e19c6af2758e586","sha256:22d599c4e77f091520c814ecab2bf53dc24bce1a19555c3360bb1ff60ebce38d"],"state_sha256":"5955eaef77e25a95eee2b787d35464ed60aca7f5252c4f13b34d3f5f788837c9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/OTAtMjMlwst/Dpeojr6P/6qpmJcIPcd2Q8JYgObVjxUzos4Ql44+IvHtHxLa16wGe7vJN0j32Ef53N6tLl2DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T14:15:03.674131Z","bundle_sha256":"cb29b02162b35286def9a15c4d258daeb320f8cb8099228954a696c62f237923"}}