{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:QV4UQ6YJD3IEM55KEDXTYR3LTP","short_pith_number":"pith:QV4UQ6YJ","canonical_record":{"source":{"id":"1904.02949","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-04-05T09:17:38Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"90464c14ce1264f0928111be11412b40fefd23aa6498d93263010401284a4f58","abstract_canon_sha256":"856dbd40385f38014c7dfd941f360913a7a1256a6bb2d2398265cce6a437753c"},"schema_version":"1.0"},"canonical_sha256":"8579487b091ed04677aa20ef3c476b9bf633e5c7571e346ea64c4ecb95d52ab4","source":{"kind":"arxiv","id":"1904.02949","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.02949","created_at":"2026-05-17T23:48:29Z"},{"alias_kind":"arxiv_version","alias_value":"1904.02949v1","created_at":"2026-05-17T23:48:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.02949","created_at":"2026-05-17T23:48:29Z"},{"alias_kind":"pith_short_12","alias_value":"QV4UQ6YJD3IE","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_16","alias_value":"QV4UQ6YJD3IEM55K","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_8","alias_value":"QV4UQ6YJ","created_at":"2026-05-18T12:33:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:QV4UQ6YJD3IEM55KEDXTYR3LTP","target":"record","payload":{"canonical_record":{"source":{"id":"1904.02949","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-04-05T09:17:38Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"90464c14ce1264f0928111be11412b40fefd23aa6498d93263010401284a4f58","abstract_canon_sha256":"856dbd40385f38014c7dfd941f360913a7a1256a6bb2d2398265cce6a437753c"},"schema_version":"1.0"},"canonical_sha256":"8579487b091ed04677aa20ef3c476b9bf633e5c7571e346ea64c4ecb95d52ab4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:48:29.535127Z","signature_b64":"0E3XV2WQiRYTCQ/tW6i/qQf9UeEttsbt8K5aJ5H6fK3zv1WDFpDfMGqFxWfFFU1niWrfkcljHESVNbzdjGwQCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8579487b091ed04677aa20ef3c476b9bf633e5c7571e346ea64c4ecb95d52ab4","last_reissued_at":"2026-05-17T23:48:29.534424Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:48:29.534424Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1904.02949","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":"2026-05-17T23:48:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xQZbytmC5U5/jpQlqz32ZULBrNfV0GtDJS0n1/xuVpaY6+uBRnGLZhf20HeH8k9K9OlnJ379OYY4JaFk4ZdRAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T03:48:10.619775Z"},"content_sha256":"09a33727955a165058873a73e7905d924ae0e4449c7b5131ef1398807769ae56","schema_version":"1.0","event_id":"sha256:09a33727955a165058873a73e7905d924ae0e4449c7b5131ef1398807769ae56"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:QV4UQ6YJD3IEM55KEDXTYR3LTP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"TESS observations of the asynchronous polar CD Ind: mapping the changing accretion geometry","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"Andrew Beardmore, David A.H. Buckley, Gavin Ramsay, Graham Wynn, Pasi Hakala, Stephen B. Potter","submitted_at":"2019-04-05T09:17:38Z","abstract_excerpt":"We present the results of near continuous TESS optical observations of the asynchronous polar CD Ind (RX J2115-5840). The 27.9 d long light curve, with 2 min resolution, reveals remarkable changes in the magnetic accretion geometry of the system over the 7.3 d beat period. We have modelled the changes in the optical spin period pulse shape using a cyclotron emission mapping technique. The resulting cyclotron emission maps of the magnetic white dwarf reveal how the accretion geometry changes from single to two pole accretion and back over the beat cycle. Finally, we present the results from par"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.02949","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":"2026-05-17T23:48:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E/LAscE3EXvP5/iD5SBwJBpk9KjoX2XE7VEDFSDYELVdYj/NW9SxTYkG+KM2FIFFkO+tPO3r8KMRZtiJC/tVDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T03:48:10.620336Z"},"content_sha256":"bcba599ab9c9d3cae12c953fbf28df22a3bb79013b035285b581b135aaef5793","schema_version":"1.0","event_id":"sha256:bcba599ab9c9d3cae12c953fbf28df22a3bb79013b035285b581b135aaef5793"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QV4UQ6YJD3IEM55KEDXTYR3LTP/bundle.json","state_url":"https://pith.science/pith/QV4UQ6YJD3IEM55KEDXTYR3LTP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QV4UQ6YJD3IEM55KEDXTYR3LTP/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":"2026-06-04T03:48:10Z","links":{"resolver":"https://pith.science/pith/QV4UQ6YJD3IEM55KEDXTYR3LTP","bundle":"https://pith.science/pith/QV4UQ6YJD3IEM55KEDXTYR3LTP/bundle.json","state":"https://pith.science/pith/QV4UQ6YJD3IEM55KEDXTYR3LTP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QV4UQ6YJD3IEM55KEDXTYR3LTP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:QV4UQ6YJD3IEM55KEDXTYR3LTP","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":"856dbd40385f38014c7dfd941f360913a7a1256a6bb2d2398265cce6a437753c","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-04-05T09:17:38Z","title_canon_sha256":"90464c14ce1264f0928111be11412b40fefd23aa6498d93263010401284a4f58"},"schema_version":"1.0","source":{"id":"1904.02949","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.02949","created_at":"2026-05-17T23:48:29Z"},{"alias_kind":"arxiv_version","alias_value":"1904.02949v1","created_at":"2026-05-17T23:48:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.02949","created_at":"2026-05-17T23:48:29Z"},{"alias_kind":"pith_short_12","alias_value":"QV4UQ6YJD3IE","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_16","alias_value":"QV4UQ6YJD3IEM55K","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_8","alias_value":"QV4UQ6YJ","created_at":"2026-05-18T12:33:27Z"}],"graph_snapshots":[{"event_id":"sha256:bcba599ab9c9d3cae12c953fbf28df22a3bb79013b035285b581b135aaef5793","target":"graph","created_at":"2026-05-17T23:48:29Z","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":"We present the results of near continuous TESS optical observations of the asynchronous polar CD Ind (RX J2115-5840). The 27.9 d long light curve, with 2 min resolution, reveals remarkable changes in the magnetic accretion geometry of the system over the 7.3 d beat period. We have modelled the changes in the optical spin period pulse shape using a cyclotron emission mapping technique. The resulting cyclotron emission maps of the magnetic white dwarf reveal how the accretion geometry changes from single to two pole accretion and back over the beat cycle. Finally, we present the results from par","authors_text":"Andrew Beardmore, David A.H. Buckley, Gavin Ramsay, Graham Wynn, Pasi Hakala, Stephen B. Potter","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-04-05T09:17:38Z","title":"TESS observations of the asynchronous polar CD Ind: mapping the changing accretion geometry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.02949","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":"sha256:09a33727955a165058873a73e7905d924ae0e4449c7b5131ef1398807769ae56","target":"record","created_at":"2026-05-17T23:48:29Z","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":"856dbd40385f38014c7dfd941f360913a7a1256a6bb2d2398265cce6a437753c","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-04-05T09:17:38Z","title_canon_sha256":"90464c14ce1264f0928111be11412b40fefd23aa6498d93263010401284a4f58"},"schema_version":"1.0","source":{"id":"1904.02949","kind":"arxiv","version":1}},"canonical_sha256":"8579487b091ed04677aa20ef3c476b9bf633e5c7571e346ea64c4ecb95d52ab4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8579487b091ed04677aa20ef3c476b9bf633e5c7571e346ea64c4ecb95d52ab4","first_computed_at":"2026-05-17T23:48:29.534424Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:48:29.534424Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0E3XV2WQiRYTCQ/tW6i/qQf9UeEttsbt8K5aJ5H6fK3zv1WDFpDfMGqFxWfFFU1niWrfkcljHESVNbzdjGwQCQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:48:29.535127Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.02949","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:09a33727955a165058873a73e7905d924ae0e4449c7b5131ef1398807769ae56","sha256:bcba599ab9c9d3cae12c953fbf28df22a3bb79013b035285b581b135aaef5793"],"state_sha256":"782166c1a84fb99dc5fa4a51a33a431a7c6d4ef0c42ee7b141755e6226491cc0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fgCH9MtjGgbO6su1IDYrZZz5xEoimvR6cTFXtRNuV0FlKQ7pMSFmEAhL26B1g3p6K9beFDs26iS5kiLGqztNAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T03:48:10.623210Z","bundle_sha256":"82809f084c74d6af57868259621ceb70ad6e2a84723a09288ba643be71e68ec2"}}