{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:EWSQFJPDIAT5WGPNXEJIA3FR5D","short_pith_number":"pith:EWSQFJPD","canonical_record":{"source":{"id":"1708.07287","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-08-24T06:20:14Z","cross_cats_sorted":[],"title_canon_sha256":"f1dff737db74397868d543fc06501634e1c3797e701677e7d8c3fa6695e8560c","abstract_canon_sha256":"efe03985d4ba5b5feea770f19809f5a36b9e9f71eeeb386e15f13970c411d726"},"schema_version":"1.0"},"canonical_sha256":"25a502a5e34027db19edb912806cb1e8e5be27368d7c084bf5fe5e69fa994fdf","source":{"kind":"arxiv","id":"1708.07287","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.07287","created_at":"2026-05-18T00:12:19Z"},{"alias_kind":"arxiv_version","alias_value":"1708.07287v1","created_at":"2026-05-18T00:12:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.07287","created_at":"2026-05-18T00:12:19Z"},{"alias_kind":"pith_short_12","alias_value":"EWSQFJPDIAT5","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"EWSQFJPDIAT5WGPN","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"EWSQFJPD","created_at":"2026-05-18T12:31:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:EWSQFJPDIAT5WGPNXEJIA3FR5D","target":"record","payload":{"canonical_record":{"source":{"id":"1708.07287","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-08-24T06:20:14Z","cross_cats_sorted":[],"title_canon_sha256":"f1dff737db74397868d543fc06501634e1c3797e701677e7d8c3fa6695e8560c","abstract_canon_sha256":"efe03985d4ba5b5feea770f19809f5a36b9e9f71eeeb386e15f13970c411d726"},"schema_version":"1.0"},"canonical_sha256":"25a502a5e34027db19edb912806cb1e8e5be27368d7c084bf5fe5e69fa994fdf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:12:19.416875Z","signature_b64":"N9/GeCT2LooRa7bCRR/bHFq31bU+xStAxsovkzMPk5H57Zggt5Iej1POjcwIAnAi25jwc1ghkJO46VgDL4pMCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"25a502a5e34027db19edb912806cb1e8e5be27368d7c084bf5fe5e69fa994fdf","last_reissued_at":"2026-05-18T00:12:19.416116Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:12:19.416116Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1708.07287","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":"2026-05-18T00:12:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XL5afHQNZF6x/yGDCkFakKToBt9jwz/wacZvkpPpZs7/1G9C7ZBeu3L3Yp7s2eflCogP9d793bsCpL7eEsOfBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T03:02:42.223633Z"},"content_sha256":"ca32d71deeb42f84e9fda669d4d3bfb29fbec13403810b399579b58cfd65faa0","schema_version":"1.0","event_id":"sha256:ca32d71deeb42f84e9fda669d4d3bfb29fbec13403810b399579b58cfd65faa0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:EWSQFJPDIAT5WGPNXEJIA3FR5D","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the Radio Detectability of Circumplanetary Discs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Andrea Isella, Sean M. Andrews, Zhaohuan Zhu","submitted_at":"2017-08-24T06:20:14Z","abstract_excerpt":"Discs around young planets, so-called circumplanetary discs (CPDs), are essential for planet growth, satellite formation, and planet detection. We study the millimetre and centimetre emission from accreting CPDs by using the simple $\\alpha$ disc model. We find that it is easier to detect CPDs at shorter radio wavelengths (e.g. $\\lambda\\lesssim$ 1 mm). For example, if the system is 140 pc away from us, deep observations (e.g. 5 hours) at ALMA Band 7 (0.87 mm) are sensitive to as small as 0.03 lunar mass of dust in CPDs. If the CPD is around a Jupiter mass planet 20 AU away from the host star an"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.07287","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":"2026-05-18T00:12:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9528hjHZIX+MFAZeSxevwUYpaZzDjaISdfsXjSAVHuVHYJSqUP2lMnHyKiqV/DahOZmnMOccvLBfGnrfaH0QAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T03:02:42.223977Z"},"content_sha256":"d292fe70b993cb89235a402b42091523cf99ceb7a37aedd15d3962ac3156d6b9","schema_version":"1.0","event_id":"sha256:d292fe70b993cb89235a402b42091523cf99ceb7a37aedd15d3962ac3156d6b9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EWSQFJPDIAT5WGPNXEJIA3FR5D/bundle.json","state_url":"https://pith.science/pith/EWSQFJPDIAT5WGPNXEJIA3FR5D/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EWSQFJPDIAT5WGPNXEJIA3FR5D/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":"2026-05-28T03:02:42Z","links":{"resolver":"https://pith.science/pith/EWSQFJPDIAT5WGPNXEJIA3FR5D","bundle":"https://pith.science/pith/EWSQFJPDIAT5WGPNXEJIA3FR5D/bundle.json","state":"https://pith.science/pith/EWSQFJPDIAT5WGPNXEJIA3FR5D/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EWSQFJPDIAT5WGPNXEJIA3FR5D/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:EWSQFJPDIAT5WGPNXEJIA3FR5D","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":"efe03985d4ba5b5feea770f19809f5a36b9e9f71eeeb386e15f13970c411d726","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-08-24T06:20:14Z","title_canon_sha256":"f1dff737db74397868d543fc06501634e1c3797e701677e7d8c3fa6695e8560c"},"schema_version":"1.0","source":{"id":"1708.07287","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.07287","created_at":"2026-05-18T00:12:19Z"},{"alias_kind":"arxiv_version","alias_value":"1708.07287v1","created_at":"2026-05-18T00:12:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.07287","created_at":"2026-05-18T00:12:19Z"},{"alias_kind":"pith_short_12","alias_value":"EWSQFJPDIAT5","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"EWSQFJPDIAT5WGPN","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"EWSQFJPD","created_at":"2026-05-18T12:31:12Z"}],"graph_snapshots":[{"event_id":"sha256:d292fe70b993cb89235a402b42091523cf99ceb7a37aedd15d3962ac3156d6b9","target":"graph","created_at":"2026-05-18T00:12:19Z","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":"Discs around young planets, so-called circumplanetary discs (CPDs), are essential for planet growth, satellite formation, and planet detection. We study the millimetre and centimetre emission from accreting CPDs by using the simple $\\alpha$ disc model. We find that it is easier to detect CPDs at shorter radio wavelengths (e.g. $\\lambda\\lesssim$ 1 mm). For example, if the system is 140 pc away from us, deep observations (e.g. 5 hours) at ALMA Band 7 (0.87 mm) are sensitive to as small as 0.03 lunar mass of dust in CPDs. If the CPD is around a Jupiter mass planet 20 AU away from the host star an","authors_text":"Andrea Isella, Sean M. Andrews, Zhaohuan Zhu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-08-24T06:20:14Z","title":"On the Radio Detectability of Circumplanetary Discs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.07287","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:ca32d71deeb42f84e9fda669d4d3bfb29fbec13403810b399579b58cfd65faa0","target":"record","created_at":"2026-05-18T00:12:19Z","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":"efe03985d4ba5b5feea770f19809f5a36b9e9f71eeeb386e15f13970c411d726","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-08-24T06:20:14Z","title_canon_sha256":"f1dff737db74397868d543fc06501634e1c3797e701677e7d8c3fa6695e8560c"},"schema_version":"1.0","source":{"id":"1708.07287","kind":"arxiv","version":1}},"canonical_sha256":"25a502a5e34027db19edb912806cb1e8e5be27368d7c084bf5fe5e69fa994fdf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"25a502a5e34027db19edb912806cb1e8e5be27368d7c084bf5fe5e69fa994fdf","first_computed_at":"2026-05-18T00:12:19.416116Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:12:19.416116Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"N9/GeCT2LooRa7bCRR/bHFq31bU+xStAxsovkzMPk5H57Zggt5Iej1POjcwIAnAi25jwc1ghkJO46VgDL4pMCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:12:19.416875Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.07287","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ca32d71deeb42f84e9fda669d4d3bfb29fbec13403810b399579b58cfd65faa0","sha256:d292fe70b993cb89235a402b42091523cf99ceb7a37aedd15d3962ac3156d6b9"],"state_sha256":"543b8cb22c105748004ba8869846e3dd86a50385dac9bc23bb594724684a0978"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wYmLXyvOTBtMKp6lBNK9v6nwfJ069PdK/C6jea5ikwkq2oKhci21V8U8o2zaxZIy5k70ErRZptPq6aCJNre1Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T03:02:42.225964Z","bundle_sha256":"bd8459de189310e5c181d0d64eb926cdf3a064d04ffbb77aaff1ee2213cedef1"}}