{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:ZGMCB5A6SBXFBYRHVNUQZHWV6S","short_pith_number":"pith:ZGMCB5A6","canonical_record":{"source":{"id":"2204.09377","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-04-20T10:40:18Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"9a466c185ffb8ae363687d52cfc6957d3eeb3000a97428ae924758af6672a4a1","abstract_canon_sha256":"8a0d8474785425bc4600ee85d0db2649aac2aa87679877fc770d72f09881d318"},"schema_version":"1.0"},"canonical_sha256":"c99820f41e906e50e227ab690c9ed5f4969339e03ac484e57db376c5c183a6cc","source":{"kind":"arxiv","id":"2204.09377","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2204.09377","created_at":"2026-07-05T04:25:17Z"},{"alias_kind":"arxiv_version","alias_value":"2204.09377v2","created_at":"2026-07-05T04:25:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2204.09377","created_at":"2026-07-05T04:25:17Z"},{"alias_kind":"pith_short_12","alias_value":"ZGMCB5A6SBXF","created_at":"2026-07-05T04:25:17Z"},{"alias_kind":"pith_short_16","alias_value":"ZGMCB5A6SBXFBYRH","created_at":"2026-07-05T04:25:17Z"},{"alias_kind":"pith_short_8","alias_value":"ZGMCB5A6","created_at":"2026-07-05T04:25:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:ZGMCB5A6SBXFBYRHVNUQZHWV6S","target":"record","payload":{"canonical_record":{"source":{"id":"2204.09377","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-04-20T10:40:18Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"9a466c185ffb8ae363687d52cfc6957d3eeb3000a97428ae924758af6672a4a1","abstract_canon_sha256":"8a0d8474785425bc4600ee85d0db2649aac2aa87679877fc770d72f09881d318"},"schema_version":"1.0"},"canonical_sha256":"c99820f41e906e50e227ab690c9ed5f4969339e03ac484e57db376c5c183a6cc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:25:17.275212Z","signature_b64":"WlUUNvPIe3OZlWGCeVJyCYbeQOPGkJcK6Vx6+zOVmhjluNNafPRpzw3ZqG/PLx4SB6CkaZMZPPVOxZ2IZU0zAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c99820f41e906e50e227ab690c9ed5f4969339e03ac484e57db376c5c183a6cc","last_reissued_at":"2026-07-05T04:25:17.274755Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:25:17.274755Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2204.09377","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T04:25:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"izvZlsC76OoTQzZ1dXnT8bnRVqcs0qIHaR1Kj/EAvx+vPCPdgkd17xdelWcqmGpEWySyaTBV6Dwu4t9qrbqnDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T19:41:37.508488Z"},"content_sha256":"42dffdda2daec1e3dcf2029a99f9fffd0bf2fe0ddf91541fa037505e8646d2c1","schema_version":"1.0","event_id":"sha256:42dffdda2daec1e3dcf2029a99f9fffd0bf2fe0ddf91541fa037505e8646d2c1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:ZGMCB5A6SBXFBYRHVNUQZHWV6S","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Circular Polarimetry of Suspect Wind-accreting Magnetic pre-Polars","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"Axel Schwope, Boris T. G\\\"ansicke, Gavin Ramsay, J.J. Hermes, Pasi Hakala, Steven G. Parsons, Thomas R. Marsh","submitted_at":"2022-04-20T10:40:18Z","abstract_excerpt":"We present results from a circular polarimetric survey of candidate detached magnetic white dwarf - M dwarf binaries obtained using the Nordic Optical Telescope, La Palma. We obtained phase resolved spectropolarimetry and imaging polarimetry of seven systems, five of which show clearly variable circular polarisation. The data indicate that these targets have white dwarfs with magnetic field strengths > 80 MG. Our study reveals that cyclotron emission can dominate the optical luminosity at wavelengths corresponding to the cyclotron emission harmonics, even in systems where the white dwarfs are "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2204.09377","kind":"arxiv","version":2},"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/2204.09377/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":"2026-07-05T04:25:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jG4U1tVwpF7Oz68rA3A4HT62a1bniJeVp6zPT6vIPaWBRR1oiVIXWyk60BJb2+hpKymCouVQS1pghXbS+8YvAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T19:41:37.508975Z"},"content_sha256":"8e0d3e087dacddb9c5d776f90c02f78358f9a77d22ad5d35261ec830d259c785","schema_version":"1.0","event_id":"sha256:8e0d3e087dacddb9c5d776f90c02f78358f9a77d22ad5d35261ec830d259c785"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZGMCB5A6SBXFBYRHVNUQZHWV6S/bundle.json","state_url":"https://pith.science/pith/ZGMCB5A6SBXFBYRHVNUQZHWV6S/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZGMCB5A6SBXFBYRHVNUQZHWV6S/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":"2026-08-11T19:41:37Z","links":{"resolver":"https://pith.science/pith/ZGMCB5A6SBXFBYRHVNUQZHWV6S","bundle":"https://pith.science/pith/ZGMCB5A6SBXFBYRHVNUQZHWV6S/bundle.json","state":"https://pith.science/pith/ZGMCB5A6SBXFBYRHVNUQZHWV6S/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZGMCB5A6SBXFBYRHVNUQZHWV6S/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:ZGMCB5A6SBXFBYRHVNUQZHWV6S","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":"8a0d8474785425bc4600ee85d0db2649aac2aa87679877fc770d72f09881d318","cross_cats_sorted":["astro-ph.HE"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-04-20T10:40:18Z","title_canon_sha256":"9a466c185ffb8ae363687d52cfc6957d3eeb3000a97428ae924758af6672a4a1"},"schema_version":"1.0","source":{"id":"2204.09377","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2204.09377","created_at":"2026-07-05T04:25:17Z"},{"alias_kind":"arxiv_version","alias_value":"2204.09377v2","created_at":"2026-07-05T04:25:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2204.09377","created_at":"2026-07-05T04:25:17Z"},{"alias_kind":"pith_short_12","alias_value":"ZGMCB5A6SBXF","created_at":"2026-07-05T04:25:17Z"},{"alias_kind":"pith_short_16","alias_value":"ZGMCB5A6SBXFBYRH","created_at":"2026-07-05T04:25:17Z"},{"alias_kind":"pith_short_8","alias_value":"ZGMCB5A6","created_at":"2026-07-05T04:25:17Z"}],"graph_snapshots":[{"event_id":"sha256:8e0d3e087dacddb9c5d776f90c02f78358f9a77d22ad5d35261ec830d259c785","target":"graph","created_at":"2026-07-05T04:25:17Z","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/2204.09377/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present results from a circular polarimetric survey of candidate detached magnetic white dwarf - M dwarf binaries obtained using the Nordic Optical Telescope, La Palma. We obtained phase resolved spectropolarimetry and imaging polarimetry of seven systems, five of which show clearly variable circular polarisation. The data indicate that these targets have white dwarfs with magnetic field strengths > 80 MG. Our study reveals that cyclotron emission can dominate the optical luminosity at wavelengths corresponding to the cyclotron emission harmonics, even in systems where the white dwarfs are ","authors_text":"Axel Schwope, Boris T. G\\\"ansicke, Gavin Ramsay, J.J. Hermes, Pasi Hakala, Steven G. Parsons, Thomas R. Marsh","cross_cats":["astro-ph.HE"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-04-20T10:40:18Z","title":"Circular Polarimetry of Suspect Wind-accreting Magnetic pre-Polars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2204.09377","kind":"arxiv","version":2},"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":"sha256:42dffdda2daec1e3dcf2029a99f9fffd0bf2fe0ddf91541fa037505e8646d2c1","target":"record","created_at":"2026-07-05T04:25:17Z","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":"8a0d8474785425bc4600ee85d0db2649aac2aa87679877fc770d72f09881d318","cross_cats_sorted":["astro-ph.HE"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-04-20T10:40:18Z","title_canon_sha256":"9a466c185ffb8ae363687d52cfc6957d3eeb3000a97428ae924758af6672a4a1"},"schema_version":"1.0","source":{"id":"2204.09377","kind":"arxiv","version":2}},"canonical_sha256":"c99820f41e906e50e227ab690c9ed5f4969339e03ac484e57db376c5c183a6cc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c99820f41e906e50e227ab690c9ed5f4969339e03ac484e57db376c5c183a6cc","first_computed_at":"2026-07-05T04:25:17.274755Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:25:17.274755Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WlUUNvPIe3OZlWGCeVJyCYbeQOPGkJcK6Vx6+zOVmhjluNNafPRpzw3ZqG/PLx4SB6CkaZMZPPVOxZ2IZU0zAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T04:25:17.275212Z","signed_message":"canonical_sha256_bytes"},"source_id":"2204.09377","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:42dffdda2daec1e3dcf2029a99f9fffd0bf2fe0ddf91541fa037505e8646d2c1","sha256:8e0d3e087dacddb9c5d776f90c02f78358f9a77d22ad5d35261ec830d259c785"],"state_sha256":"c2ca4ce314631f43c011970933f39b5d050e19b8979b5ade48582d7346ec96d1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2nhcj57wmE02T1mtLY8SrnyS3Q8EJu7vpby4AyUTudmVKGWY4QkA+fCwhze5OgGFuK/ROSZdZstd08J+tulZCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T19:41:37.512162Z","bundle_sha256":"f7c7493838a70356a2eb902a97420d8f3ea1308f93a4f74b42b8df3ff1922976"}}