{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:UGOJ74UDAAVAZAW7EXG4BNSFDP","short_pith_number":"pith:UGOJ74UD","canonical_record":{"source":{"id":"1506.07213","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-06-23T23:23:54Z","cross_cats_sorted":[],"title_canon_sha256":"320694f36eeb395f0cacb8fcd4d1a64649a2f7ba161bb37773c37a71056b52fe","abstract_canon_sha256":"aa0f1310b06d1be28c2715318a471215f417114a1b8f0be2c37cf991904bb13b"},"schema_version":"1.0"},"canonical_sha256":"a19c9ff283002a0c82df25cdc0b6451bd30667cf76b09aecf1ccec45430a9f77","source":{"kind":"arxiv","id":"1506.07213","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.07213","created_at":"2026-05-18T01:35:46Z"},{"alias_kind":"arxiv_version","alias_value":"1506.07213v1","created_at":"2026-05-18T01:35:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.07213","created_at":"2026-05-18T01:35:46Z"},{"alias_kind":"pith_short_12","alias_value":"UGOJ74UDAAVA","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"UGOJ74UDAAVAZAW7","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"UGOJ74UD","created_at":"2026-05-18T12:29:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:UGOJ74UDAAVAZAW7EXG4BNSFDP","target":"record","payload":{"canonical_record":{"source":{"id":"1506.07213","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-06-23T23:23:54Z","cross_cats_sorted":[],"title_canon_sha256":"320694f36eeb395f0cacb8fcd4d1a64649a2f7ba161bb37773c37a71056b52fe","abstract_canon_sha256":"aa0f1310b06d1be28c2715318a471215f417114a1b8f0be2c37cf991904bb13b"},"schema_version":"1.0"},"canonical_sha256":"a19c9ff283002a0c82df25cdc0b6451bd30667cf76b09aecf1ccec45430a9f77","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:35:46.529634Z","signature_b64":"hgVN74ceSUWi4qR777/PEPMEihIGC8rKFu7nO2gJX6lk1R6s0At7eBvoIU7Oj5AZTVbHSjIfD1orCnFmoCs8Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a19c9ff283002a0c82df25cdc0b6451bd30667cf76b09aecf1ccec45430a9f77","last_reissued_at":"2026-05-18T01:35:46.529229Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:35:46.529229Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1506.07213","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":"2026-05-18T01:35:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0Cw4nm3XB9cc+cAa5XwrPTPwdxnX9iSKAtbt8YrpbIdPWm9MVdRxIvXmL7fzIZAQ7IfePLqmnw7455dJflFhBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T08:17:14.564932Z"},"content_sha256":"c43ddf7ada02f46ee8bf095a85614d38f8271d14e0a7ec1df32860683cfbe666","schema_version":"1.0","event_id":"sha256:c43ddf7ada02f46ee8bf095a85614d38f8271d14e0a7ec1df32860683cfbe666"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:UGOJ74UDAAVAZAW7EXG4BNSFDP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Unambiguous Detection of Reflection in Magnetic Cataclysmic Variables: Joint NuSTAR-XMM-Newton Observations of Three Intermediate Polars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Domitilla de Martino, Federico Bernardini, Koji Mukai, Vikram Rana","submitted_at":"2015-06-23T23:23:54Z","abstract_excerpt":"In magnetic cataclysmic variables (CVs), X-ray emission regions are located close to the white dwarf surface, which is expected to reflect a significant fraction of intrinsic X-rays above 10 keV, producing a Compton reflection hump. However, up to now, a secure detection of this effect in magnetic CVs has largely proved elusive because of the limited sensitivity of non-imaging X-ray detectors. Here we report our analysis of joint NuSTAR/XMM-Newton observations of three magnetic CVs, V709 Cas, NY Lup, and V1223 Sgr. The improved hard X-ray sensitivity of the imaging NuSTAR data has resulted in "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.07213","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":"2026-05-18T01:35:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I+upwt+Ww+/zb82d10ucXpDUdyT7NX6ycPy86nQ7nl9ST0f06A5NRbk72t4jErhZe66EMZP0x6fX+z2bwQihBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T08:17:14.565730Z"},"content_sha256":"39d9b55af0a81234e2c47da837fc76e2ca68af89a6c2e192fbd1641b3ab3be8c","schema_version":"1.0","event_id":"sha256:39d9b55af0a81234e2c47da837fc76e2ca68af89a6c2e192fbd1641b3ab3be8c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UGOJ74UDAAVAZAW7EXG4BNSFDP/bundle.json","state_url":"https://pith.science/pith/UGOJ74UDAAVAZAW7EXG4BNSFDP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UGOJ74UDAAVAZAW7EXG4BNSFDP/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":"2026-05-31T08:17:14Z","links":{"resolver":"https://pith.science/pith/UGOJ74UDAAVAZAW7EXG4BNSFDP","bundle":"https://pith.science/pith/UGOJ74UDAAVAZAW7EXG4BNSFDP/bundle.json","state":"https://pith.science/pith/UGOJ74UDAAVAZAW7EXG4BNSFDP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UGOJ74UDAAVAZAW7EXG4BNSFDP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:UGOJ74UDAAVAZAW7EXG4BNSFDP","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":"aa0f1310b06d1be28c2715318a471215f417114a1b8f0be2c37cf991904bb13b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-06-23T23:23:54Z","title_canon_sha256":"320694f36eeb395f0cacb8fcd4d1a64649a2f7ba161bb37773c37a71056b52fe"},"schema_version":"1.0","source":{"id":"1506.07213","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.07213","created_at":"2026-05-18T01:35:46Z"},{"alias_kind":"arxiv_version","alias_value":"1506.07213v1","created_at":"2026-05-18T01:35:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.07213","created_at":"2026-05-18T01:35:46Z"},{"alias_kind":"pith_short_12","alias_value":"UGOJ74UDAAVA","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"UGOJ74UDAAVAZAW7","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"UGOJ74UD","created_at":"2026-05-18T12:29:44Z"}],"graph_snapshots":[{"event_id":"sha256:39d9b55af0a81234e2c47da837fc76e2ca68af89a6c2e192fbd1641b3ab3be8c","target":"graph","created_at":"2026-05-18T01:35:46Z","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":"In magnetic cataclysmic variables (CVs), X-ray emission regions are located close to the white dwarf surface, which is expected to reflect a significant fraction of intrinsic X-rays above 10 keV, producing a Compton reflection hump. However, up to now, a secure detection of this effect in magnetic CVs has largely proved elusive because of the limited sensitivity of non-imaging X-ray detectors. Here we report our analysis of joint NuSTAR/XMM-Newton observations of three magnetic CVs, V709 Cas, NY Lup, and V1223 Sgr. The improved hard X-ray sensitivity of the imaging NuSTAR data has resulted in ","authors_text":"Domitilla de Martino, Federico Bernardini, Koji Mukai, Vikram Rana","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-06-23T23:23:54Z","title":"Unambiguous Detection of Reflection in Magnetic Cataclysmic Variables: Joint NuSTAR-XMM-Newton Observations of Three Intermediate Polars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.07213","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:c43ddf7ada02f46ee8bf095a85614d38f8271d14e0a7ec1df32860683cfbe666","target":"record","created_at":"2026-05-18T01:35:46Z","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":"aa0f1310b06d1be28c2715318a471215f417114a1b8f0be2c37cf991904bb13b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-06-23T23:23:54Z","title_canon_sha256":"320694f36eeb395f0cacb8fcd4d1a64649a2f7ba161bb37773c37a71056b52fe"},"schema_version":"1.0","source":{"id":"1506.07213","kind":"arxiv","version":1}},"canonical_sha256":"a19c9ff283002a0c82df25cdc0b6451bd30667cf76b09aecf1ccec45430a9f77","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a19c9ff283002a0c82df25cdc0b6451bd30667cf76b09aecf1ccec45430a9f77","first_computed_at":"2026-05-18T01:35:46.529229Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:35:46.529229Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hgVN74ceSUWi4qR777/PEPMEihIGC8rKFu7nO2gJX6lk1R6s0At7eBvoIU7Oj5AZTVbHSjIfD1orCnFmoCs8Aw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:35:46.529634Z","signed_message":"canonical_sha256_bytes"},"source_id":"1506.07213","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c43ddf7ada02f46ee8bf095a85614d38f8271d14e0a7ec1df32860683cfbe666","sha256:39d9b55af0a81234e2c47da837fc76e2ca68af89a6c2e192fbd1641b3ab3be8c"],"state_sha256":"9c31587241fb2c03669906675cd0d708d235139de5418216dd9cb51d0c0c25be"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h65ve9t4w3oyaeQDki0Rc5JVOus0jsE5LH+EbsWgRdQ59si9q0AvPRYh+RZnlN/bTQmRV2A//xJTrLPF2iSZDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T08:17:14.569723Z","bundle_sha256":"1006d55b69cc04f99aa0e8f71690e583186cb9cb629950a02833aab61e29505b"}}