{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:JWVZI7D7QJC2FMQ3T6Z2Q4YU2J","short_pith_number":"pith:JWVZI7D7","canonical_record":{"source":{"id":"1505.02139","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-05-08T19:11:36Z","cross_cats_sorted":[],"title_canon_sha256":"b64c32294a913d84676b1e5e5422357d65ac3a04fb2fc9bd7a951c944f043db1","abstract_canon_sha256":"0d714558f991b01ac05985fa6391e3709e32ea0ae23b6b7275e090f894263b02"},"schema_version":"1.0"},"canonical_sha256":"4dab947c7f8245a2b21b9fb3a87314d2493f3ed266deb711b24fc0a06a41aab3","source":{"kind":"arxiv","id":"1505.02139","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.02139","created_at":"2026-05-18T01:35:47Z"},{"alias_kind":"arxiv_version","alias_value":"1505.02139v1","created_at":"2026-05-18T01:35:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.02139","created_at":"2026-05-18T01:35:47Z"},{"alias_kind":"pith_short_12","alias_value":"JWVZI7D7QJC2","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"JWVZI7D7QJC2FMQ3","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"JWVZI7D7","created_at":"2026-05-18T12:29:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:JWVZI7D7QJC2FMQ3T6Z2Q4YU2J","target":"record","payload":{"canonical_record":{"source":{"id":"1505.02139","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-05-08T19:11:36Z","cross_cats_sorted":[],"title_canon_sha256":"b64c32294a913d84676b1e5e5422357d65ac3a04fb2fc9bd7a951c944f043db1","abstract_canon_sha256":"0d714558f991b01ac05985fa6391e3709e32ea0ae23b6b7275e090f894263b02"},"schema_version":"1.0"},"canonical_sha256":"4dab947c7f8245a2b21b9fb3a87314d2493f3ed266deb711b24fc0a06a41aab3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:35:47.960474Z","signature_b64":"P+PBQfNgNz4wKcvFf/jk9eCD2gkOiSw/ap008ST/brzIzgAdeIJqyNM6cA6WEkOb0RAnWk2T22aTWaJK/Wh8Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4dab947c7f8245a2b21b9fb3a87314d2493f3ed266deb711b24fc0a06a41aab3","last_reissued_at":"2026-05-18T01:35:47.959735Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:35:47.959735Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1505.02139","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":"2026-05-18T01:35:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xFloE38oMCzWcTdju506S0EE3irYO7p1gojR4xtckvx/unDt4zOhSVTwX+NOLuO17iEP97okclPFPHwewl2BAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T21:37:56.968644Z"},"content_sha256":"6d993c6368892409aecf5ab14c1c7e529ae17d0231bdae0dcb175db080a59092","schema_version":"1.0","event_id":"sha256:6d993c6368892409aecf5ab14c1c7e529ae17d0231bdae0dcb175db080a59092"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:JWVZI7D7QJC2FMQ3T6Z2Q4YU2J","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"First detections of 610 MHz radio emission from hot magnetic stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. David-Uraz, A. ud-Doula, D. H. Cohen, D. Oberoi, G. A. Wade, J. H. Grunhut, J. O. Sundqvist, M. E. Oksala, P. Chandra, V. Petit","submitted_at":"2015-05-08T19:11:36Z","abstract_excerpt":"We have carried out a study of radio emission from a small sample of magnetic O- and B-type stars using the Giant Metrewave Radio Telescope, with the goal of investigating their magnetospheres at low frequencies. These are the lowest frequency radio measurements ever obtained of hot magnetic stars. The observations were taken at random rotational phases in the 1390 and the 610 MHz bands. Out of the 8 stars, we detect five B-type stars in both the 1390 and the 610 MHz bands. The O-type stars were observed only in the 1390 MHz band, and no detections were obtained. We explain this result as a co"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.02139","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":"2026-05-18T01:35:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E9aMPBu5747K6bC/3dBhqzlOnVYhHKcMmxoa7pMa2ePzhxHfFU2Ws2+ypTvhfm96rSaQVhXtY+PKe7+K+hqMBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T21:37:56.969198Z"},"content_sha256":"27ad87222fb223fe61d3a0139690a7679a83ad51da2a003e3f590e073e0cc883","schema_version":"1.0","event_id":"sha256:27ad87222fb223fe61d3a0139690a7679a83ad51da2a003e3f590e073e0cc883"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JWVZI7D7QJC2FMQ3T6Z2Q4YU2J/bundle.json","state_url":"https://pith.science/pith/JWVZI7D7QJC2FMQ3T6Z2Q4YU2J/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JWVZI7D7QJC2FMQ3T6Z2Q4YU2J/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":"2026-05-26T21:37:56Z","links":{"resolver":"https://pith.science/pith/JWVZI7D7QJC2FMQ3T6Z2Q4YU2J","bundle":"https://pith.science/pith/JWVZI7D7QJC2FMQ3T6Z2Q4YU2J/bundle.json","state":"https://pith.science/pith/JWVZI7D7QJC2FMQ3T6Z2Q4YU2J/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JWVZI7D7QJC2FMQ3T6Z2Q4YU2J/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:JWVZI7D7QJC2FMQ3T6Z2Q4YU2J","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":"0d714558f991b01ac05985fa6391e3709e32ea0ae23b6b7275e090f894263b02","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-05-08T19:11:36Z","title_canon_sha256":"b64c32294a913d84676b1e5e5422357d65ac3a04fb2fc9bd7a951c944f043db1"},"schema_version":"1.0","source":{"id":"1505.02139","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.02139","created_at":"2026-05-18T01:35:47Z"},{"alias_kind":"arxiv_version","alias_value":"1505.02139v1","created_at":"2026-05-18T01:35:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.02139","created_at":"2026-05-18T01:35:47Z"},{"alias_kind":"pith_short_12","alias_value":"JWVZI7D7QJC2","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"JWVZI7D7QJC2FMQ3","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"JWVZI7D7","created_at":"2026-05-18T12:29:27Z"}],"graph_snapshots":[{"event_id":"sha256:27ad87222fb223fe61d3a0139690a7679a83ad51da2a003e3f590e073e0cc883","target":"graph","created_at":"2026-05-18T01:35:47Z","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 have carried out a study of radio emission from a small sample of magnetic O- and B-type stars using the Giant Metrewave Radio Telescope, with the goal of investigating their magnetospheres at low frequencies. These are the lowest frequency radio measurements ever obtained of hot magnetic stars. The observations were taken at random rotational phases in the 1390 and the 610 MHz bands. Out of the 8 stars, we detect five B-type stars in both the 1390 and the 610 MHz bands. The O-type stars were observed only in the 1390 MHz band, and no detections were obtained. We explain this result as a co","authors_text":"A. David-Uraz, A. ud-Doula, D. H. Cohen, D. Oberoi, G. A. Wade, J. H. Grunhut, J. O. Sundqvist, M. E. Oksala, P. Chandra, V. Petit","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-05-08T19:11:36Z","title":"First detections of 610 MHz radio emission from hot magnetic stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.02139","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":"sha256:6d993c6368892409aecf5ab14c1c7e529ae17d0231bdae0dcb175db080a59092","target":"record","created_at":"2026-05-18T01:35:47Z","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":"0d714558f991b01ac05985fa6391e3709e32ea0ae23b6b7275e090f894263b02","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-05-08T19:11:36Z","title_canon_sha256":"b64c32294a913d84676b1e5e5422357d65ac3a04fb2fc9bd7a951c944f043db1"},"schema_version":"1.0","source":{"id":"1505.02139","kind":"arxiv","version":1}},"canonical_sha256":"4dab947c7f8245a2b21b9fb3a87314d2493f3ed266deb711b24fc0a06a41aab3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4dab947c7f8245a2b21b9fb3a87314d2493f3ed266deb711b24fc0a06a41aab3","first_computed_at":"2026-05-18T01:35:47.959735Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:35:47.959735Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"P+PBQfNgNz4wKcvFf/jk9eCD2gkOiSw/ap008ST/brzIzgAdeIJqyNM6cA6WEkOb0RAnWk2T22aTWaJK/Wh8Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:35:47.960474Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.02139","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6d993c6368892409aecf5ab14c1c7e529ae17d0231bdae0dcb175db080a59092","sha256:27ad87222fb223fe61d3a0139690a7679a83ad51da2a003e3f590e073e0cc883"],"state_sha256":"f83a4d8d74f641ebf6eed5a5d98ae7dad0911020c934bccf957c0fa451819c27"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Qo81MCWxT+znAtc5BCGR+erL29/HauCAbHjvYk+o0UXIapueH1f0ke2yVAGrp70ha5irWeZPllCpjlSA9j7uBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T21:37:56.972439Z","bundle_sha256":"6363229ae01ec8808ad4ab369e0598deac4a67a4256748defb50fa152e008a2b"}}