{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:ISJPVMDMW5GGMSSBNNXTR5TAFZ","short_pith_number":"pith:ISJPVMDM","canonical_record":{"source":{"id":"2410.12698","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2024-10-16T16:02:19Z","cross_cats_sorted":["astro-ph.IM","astro-ph.SR"],"title_canon_sha256":"b420e036e8472ffa7ebfc6ec1afacac68103de20c750f0130f068bfaf13ada1e","abstract_canon_sha256":"c2441254418242f83ff163045dacfe0492db5d8ffdbb43ceb9736cb451b5170b"},"schema_version":"1.0"},"canonical_sha256":"4492fab06cb74c664a416b6f38f6602e55c7415de0285038e2311a00c50ae5d2","source":{"kind":"arxiv","id":"2410.12698","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2410.12698","created_at":"2026-07-05T09:21:32Z"},{"alias_kind":"arxiv_version","alias_value":"2410.12698v1","created_at":"2026-07-05T09:21:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2410.12698","created_at":"2026-07-05T09:21:32Z"},{"alias_kind":"pith_short_12","alias_value":"ISJPVMDMW5GG","created_at":"2026-07-05T09:21:32Z"},{"alias_kind":"pith_short_16","alias_value":"ISJPVMDMW5GGMSSB","created_at":"2026-07-05T09:21:32Z"},{"alias_kind":"pith_short_8","alias_value":"ISJPVMDM","created_at":"2026-07-05T09:21:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:ISJPVMDMW5GGMSSBNNXTR5TAFZ","target":"record","payload":{"canonical_record":{"source":{"id":"2410.12698","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2024-10-16T16:02:19Z","cross_cats_sorted":["astro-ph.IM","astro-ph.SR"],"title_canon_sha256":"b420e036e8472ffa7ebfc6ec1afacac68103de20c750f0130f068bfaf13ada1e","abstract_canon_sha256":"c2441254418242f83ff163045dacfe0492db5d8ffdbb43ceb9736cb451b5170b"},"schema_version":"1.0"},"canonical_sha256":"4492fab06cb74c664a416b6f38f6602e55c7415de0285038e2311a00c50ae5d2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:21:32.497511Z","signature_b64":"tEt9o8929eCSxVeyLzQr9A3Q6QM7Ub4SSvw59XOHWgAH+s+ilKNHuumTnxlQh/IN/pptA0wYvQS4VSXIvwkVBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4492fab06cb74c664a416b6f38f6602e55c7415de0285038e2311a00c50ae5d2","last_reissued_at":"2026-07-05T09:21:32.497089Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:21:32.497089Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2410.12698","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":"2026-07-05T09:21:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E346LUk53Xe031lbZfpYwtnderzLVc4L6I5UGH+VMfsam0EDNLAUqrpL3TzWoBzD6s2JK0WfY+ao9AVzUFRsCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T15:42:54.524809Z"},"content_sha256":"3605736e96869dd3306655810838bf8df95a7735eb1702d46a48a136f2f069a3","schema_version":"1.0","event_id":"sha256:3605736e96869dd3306655810838bf8df95a7735eb1702d46a48a136f2f069a3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:ISJPVMDMW5GGMSSBNNXTR5TAFZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Gaussian process model for stellar activity in 2-D line profile time-series","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.IM","astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Baptiste Klein, Florian Lienhard, Haochuan Yu, Michael Cretignier, Stephen J. Roberts, Suzanne Aigrain","submitted_at":"2024-10-16T16:02:19Z","abstract_excerpt":"Stellar active regions like spots and faculae can distort the shapes of spectral lines, inducing variations in the radial velocities that are often orders of magnitude larger than the signals from Earth-like planets. Efforts to mitigate these activity signals have hitherto focused on either the time or the velocity (wavelength) domains. We present a physics-driven Gaussian process (GP) framework to model activity signals directly in time series of line profiles or Cross-Correlation Functions (CCFs). Unlike existing methods which correct activity signals in line profile time series, our approac"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2410.12698","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2410.12698/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":"2026-07-05T09:21:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cVDGInhphzJZushMqZTQh6NQ5qqpruWjOdFYQJX9aP+Owg5vYq+h3XFClyCvZvVpLO/FqkRpFaYn/gN7M9RBDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T15:42:54.525457Z"},"content_sha256":"628ffba6bee3c229ba21f538b67b69ebf4f43feac74867c04ebb52247df8f7b2","schema_version":"1.0","event_id":"sha256:628ffba6bee3c229ba21f538b67b69ebf4f43feac74867c04ebb52247df8f7b2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ISJPVMDMW5GGMSSBNNXTR5TAFZ/bundle.json","state_url":"https://pith.science/pith/ISJPVMDMW5GGMSSBNNXTR5TAFZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ISJPVMDMW5GGMSSBNNXTR5TAFZ/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":"2026-07-05T15:42:54Z","links":{"resolver":"https://pith.science/pith/ISJPVMDMW5GGMSSBNNXTR5TAFZ","bundle":"https://pith.science/pith/ISJPVMDMW5GGMSSBNNXTR5TAFZ/bundle.json","state":"https://pith.science/pith/ISJPVMDMW5GGMSSBNNXTR5TAFZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ISJPVMDMW5GGMSSBNNXTR5TAFZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:ISJPVMDMW5GGMSSBNNXTR5TAFZ","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":"c2441254418242f83ff163045dacfe0492db5d8ffdbb43ceb9736cb451b5170b","cross_cats_sorted":["astro-ph.IM","astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2024-10-16T16:02:19Z","title_canon_sha256":"b420e036e8472ffa7ebfc6ec1afacac68103de20c750f0130f068bfaf13ada1e"},"schema_version":"1.0","source":{"id":"2410.12698","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2410.12698","created_at":"2026-07-05T09:21:32Z"},{"alias_kind":"arxiv_version","alias_value":"2410.12698v1","created_at":"2026-07-05T09:21:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2410.12698","created_at":"2026-07-05T09:21:32Z"},{"alias_kind":"pith_short_12","alias_value":"ISJPVMDMW5GG","created_at":"2026-07-05T09:21:32Z"},{"alias_kind":"pith_short_16","alias_value":"ISJPVMDMW5GGMSSB","created_at":"2026-07-05T09:21:32Z"},{"alias_kind":"pith_short_8","alias_value":"ISJPVMDM","created_at":"2026-07-05T09:21:32Z"}],"graph_snapshots":[{"event_id":"sha256:628ffba6bee3c229ba21f538b67b69ebf4f43feac74867c04ebb52247df8f7b2","target":"graph","created_at":"2026-07-05T09:21:32Z","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/2410.12698/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Stellar active regions like spots and faculae can distort the shapes of spectral lines, inducing variations in the radial velocities that are often orders of magnitude larger than the signals from Earth-like planets. Efforts to mitigate these activity signals have hitherto focused on either the time or the velocity (wavelength) domains. We present a physics-driven Gaussian process (GP) framework to model activity signals directly in time series of line profiles or Cross-Correlation Functions (CCFs). Unlike existing methods which correct activity signals in line profile time series, our approac","authors_text":"Baptiste Klein, Florian Lienhard, Haochuan Yu, Michael Cretignier, Stephen J. Roberts, Suzanne Aigrain","cross_cats":["astro-ph.IM","astro-ph.SR"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2024-10-16T16:02:19Z","title":"A Gaussian process model for stellar activity in 2-D line profile time-series"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2410.12698","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":"sha256:3605736e96869dd3306655810838bf8df95a7735eb1702d46a48a136f2f069a3","target":"record","created_at":"2026-07-05T09:21:32Z","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":"c2441254418242f83ff163045dacfe0492db5d8ffdbb43ceb9736cb451b5170b","cross_cats_sorted":["astro-ph.IM","astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2024-10-16T16:02:19Z","title_canon_sha256":"b420e036e8472ffa7ebfc6ec1afacac68103de20c750f0130f068bfaf13ada1e"},"schema_version":"1.0","source":{"id":"2410.12698","kind":"arxiv","version":1}},"canonical_sha256":"4492fab06cb74c664a416b6f38f6602e55c7415de0285038e2311a00c50ae5d2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4492fab06cb74c664a416b6f38f6602e55c7415de0285038e2311a00c50ae5d2","first_computed_at":"2026-07-05T09:21:32.497089Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:21:32.497089Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tEt9o8929eCSxVeyLzQr9A3Q6QM7Ub4SSvw59XOHWgAH+s+ilKNHuumTnxlQh/IN/pptA0wYvQS4VSXIvwkVBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T09:21:32.497511Z","signed_message":"canonical_sha256_bytes"},"source_id":"2410.12698","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3605736e96869dd3306655810838bf8df95a7735eb1702d46a48a136f2f069a3","sha256:628ffba6bee3c229ba21f538b67b69ebf4f43feac74867c04ebb52247df8f7b2"],"state_sha256":"4878f8a10b8fcbf1da4d313c08c45003f9cacc9d5246e73046390ad0decea053"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J3tXMBeuig7Z2Dm1kV964h8/9/Le35re//OJYoEOYrwCkHoSlUIBmWaFWzH6/od5hPb4AHfwhp/hpv92yzI7CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T15:42:54.528611Z","bundle_sha256":"8fa58dd46afd228805b0d7b8875afa5ff755c4fd8df3be4cd3f6a5ca874fdc57"}}