{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:RWIG7AA6ADWBXQSXEZSZKRYYPQ","short_pith_number":"pith:RWIG7AA6","canonical_record":{"source":{"id":"1012.0500","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2010-12-02T17:07:29Z","cross_cats_sorted":["astro-ph.EP","astro-ph.SR"],"title_canon_sha256":"783559faf61e623ee77561e9aad116906973b1ee6d39b524e52500a42061c0ba","abstract_canon_sha256":"a9d38bb994f2f2a2a37c6b5cd1fa4b4b55b02f3f1495f7e373b6fa7653017ca1"},"schema_version":"1.0"},"canonical_sha256":"8d906f801e00ec1bc25726659547187c2d6709388c41d43cd4f24ef70e9fe645","source":{"kind":"arxiv","id":"1012.0500","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1012.0500","created_at":"2026-05-18T02:23:16Z"},{"alias_kind":"arxiv_version","alias_value":"1012.0500v1","created_at":"2026-05-18T02:23:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1012.0500","created_at":"2026-05-18T02:23:16Z"},{"alias_kind":"pith_short_12","alias_value":"RWIG7AA6ADWB","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_16","alias_value":"RWIG7AA6ADWBXQSX","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_8","alias_value":"RWIG7AA6","created_at":"2026-05-18T12:26:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:RWIG7AA6ADWBXQSXEZSZKRYYPQ","target":"record","payload":{"canonical_record":{"source":{"id":"1012.0500","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2010-12-02T17:07:29Z","cross_cats_sorted":["astro-ph.EP","astro-ph.SR"],"title_canon_sha256":"783559faf61e623ee77561e9aad116906973b1ee6d39b524e52500a42061c0ba","abstract_canon_sha256":"a9d38bb994f2f2a2a37c6b5cd1fa4b4b55b02f3f1495f7e373b6fa7653017ca1"},"schema_version":"1.0"},"canonical_sha256":"8d906f801e00ec1bc25726659547187c2d6709388c41d43cd4f24ef70e9fe645","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:23:16.645947Z","signature_b64":"0TFzVhMrBNkpHNbExTWwS+ySkVm9xAYdl6VR4iNG+dFlySLnVG2g70qLRALMi7GgAW8BvImWJ9S6FHP11JXUBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8d906f801e00ec1bc25726659547187c2d6709388c41d43cd4f24ef70e9fe645","last_reissued_at":"2026-05-18T02:23:16.645350Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:23:16.645350Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1012.0500","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":"2026-05-18T02:23:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"au0Ar/i9RlvbmXsGQ+MDhSlhrGvIyV50RcgJjEhzauB4duawGXjsXtLvV/R50yUZpySZBmuP7uHQRRJFUTVJCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T09:38:09.800594Z"},"content_sha256":"adf69ee07018025b86708b04b1f156bfb31ab9a4ca68fdacff9253a1713d06fa","schema_version":"1.0","event_id":"sha256:adf69ee07018025b86708b04b1f156bfb31ab9a4ca68fdacff9253a1713d06fa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:RWIG7AA6ADWBXQSXEZSZKRYYPQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Multi-Aperture Imaging of Extrasolar Planetary Systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP","astro-ph.SR"],"primary_cat":"astro-ph.IM","authors_text":"O. Absil","submitted_at":"2010-12-02T17:07:29Z","abstract_excerpt":"In this paper, we review the various ways in which an infrared stellar interferometer can be used to perform direct detection of extrasolar planetary systems. We first review the techniques based on classical stellar interferometry, where (complex) visibilities are measured, and then describe how higher dynamic ranges can be achieved with nulling interferometry. The application of nulling interferometry to the study of exozodiacal discs and extrasolar planets is then discussed and illustrated with a few examples."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1012.0500","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":"2026-05-18T02:23:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OG0vVTvzahJsqP97ZX/Wx9d5wRS9sarV9YZwTX9NpX29fo96SfxGBimP8Ss1nGyrPwHmBH49KBPNRN/mR1xnDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T09:38:09.800957Z"},"content_sha256":"ae939f36bbc5ce5e8db83be705dde6c27de00b6fcf32afbccf9ffa3c56a20e95","schema_version":"1.0","event_id":"sha256:ae939f36bbc5ce5e8db83be705dde6c27de00b6fcf32afbccf9ffa3c56a20e95"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RWIG7AA6ADWBXQSXEZSZKRYYPQ/bundle.json","state_url":"https://pith.science/pith/RWIG7AA6ADWBXQSXEZSZKRYYPQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RWIG7AA6ADWBXQSXEZSZKRYYPQ/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":"2026-06-01T09:38:09Z","links":{"resolver":"https://pith.science/pith/RWIG7AA6ADWBXQSXEZSZKRYYPQ","bundle":"https://pith.science/pith/RWIG7AA6ADWBXQSXEZSZKRYYPQ/bundle.json","state":"https://pith.science/pith/RWIG7AA6ADWBXQSXEZSZKRYYPQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RWIG7AA6ADWBXQSXEZSZKRYYPQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:RWIG7AA6ADWBXQSXEZSZKRYYPQ","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":"a9d38bb994f2f2a2a37c6b5cd1fa4b4b55b02f3f1495f7e373b6fa7653017ca1","cross_cats_sorted":["astro-ph.EP","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2010-12-02T17:07:29Z","title_canon_sha256":"783559faf61e623ee77561e9aad116906973b1ee6d39b524e52500a42061c0ba"},"schema_version":"1.0","source":{"id":"1012.0500","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1012.0500","created_at":"2026-05-18T02:23:16Z"},{"alias_kind":"arxiv_version","alias_value":"1012.0500v1","created_at":"2026-05-18T02:23:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1012.0500","created_at":"2026-05-18T02:23:16Z"},{"alias_kind":"pith_short_12","alias_value":"RWIG7AA6ADWB","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_16","alias_value":"RWIG7AA6ADWBXQSX","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_8","alias_value":"RWIG7AA6","created_at":"2026-05-18T12:26:13Z"}],"graph_snapshots":[{"event_id":"sha256:ae939f36bbc5ce5e8db83be705dde6c27de00b6fcf32afbccf9ffa3c56a20e95","target":"graph","created_at":"2026-05-18T02:23:16Z","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 this paper, we review the various ways in which an infrared stellar interferometer can be used to perform direct detection of extrasolar planetary systems. We first review the techniques based on classical stellar interferometry, where (complex) visibilities are measured, and then describe how higher dynamic ranges can be achieved with nulling interferometry. The application of nulling interferometry to the study of exozodiacal discs and extrasolar planets is then discussed and illustrated with a few examples.","authors_text":"O. Absil","cross_cats":["astro-ph.EP","astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2010-12-02T17:07:29Z","title":"Multi-Aperture Imaging of Extrasolar Planetary Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1012.0500","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:adf69ee07018025b86708b04b1f156bfb31ab9a4ca68fdacff9253a1713d06fa","target":"record","created_at":"2026-05-18T02:23:16Z","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":"a9d38bb994f2f2a2a37c6b5cd1fa4b4b55b02f3f1495f7e373b6fa7653017ca1","cross_cats_sorted":["astro-ph.EP","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2010-12-02T17:07:29Z","title_canon_sha256":"783559faf61e623ee77561e9aad116906973b1ee6d39b524e52500a42061c0ba"},"schema_version":"1.0","source":{"id":"1012.0500","kind":"arxiv","version":1}},"canonical_sha256":"8d906f801e00ec1bc25726659547187c2d6709388c41d43cd4f24ef70e9fe645","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8d906f801e00ec1bc25726659547187c2d6709388c41d43cd4f24ef70e9fe645","first_computed_at":"2026-05-18T02:23:16.645350Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:23:16.645350Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0TFzVhMrBNkpHNbExTWwS+ySkVm9xAYdl6VR4iNG+dFlySLnVG2g70qLRALMi7GgAW8BvImWJ9S6FHP11JXUBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:23:16.645947Z","signed_message":"canonical_sha256_bytes"},"source_id":"1012.0500","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:adf69ee07018025b86708b04b1f156bfb31ab9a4ca68fdacff9253a1713d06fa","sha256:ae939f36bbc5ce5e8db83be705dde6c27de00b6fcf32afbccf9ffa3c56a20e95"],"state_sha256":"ba184ecbaa6d087ddcb3874a0c17d07bba276e44d2f0f55322d8f85dabe22cec"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ay6be/p8slBw4KM6Q1CNxNblFDq3vqoxvnUZff/80jEO/79xUNgP5bNvZqBZ7+ogZncMf/GAzbDJBk4eoKzEDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T09:38:09.802934Z","bundle_sha256":"f3e8a735c2afccfd2a029f4fe15f9285d91bba94a994bdf24c362fb504e48538"}}