{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:H6AOW6YPKLRRVX3BD3TT72UGSC","short_pith_number":"pith:H6AOW6YP","canonical_record":{"source":{"id":"1708.09203","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-08-30T10:18:06Z","cross_cats_sorted":[],"title_canon_sha256":"902a819663f28b0a3bb919026df3ce89e0613281ce261dbbe05bc73039c4c21c","abstract_canon_sha256":"3f52662bf8cd861ca3647667e68f77d9bc755a845f4ab0df69dc2d0815f10b0b"},"schema_version":"1.0"},"canonical_sha256":"3f80eb7b0f52e31adf611ee73fea8690b99d128a36ad24a63cc46935ef8e028f","source":{"kind":"arxiv","id":"1708.09203","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.09203","created_at":"2026-05-18T00:26:54Z"},{"alias_kind":"arxiv_version","alias_value":"1708.09203v2","created_at":"2026-05-18T00:26:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.09203","created_at":"2026-05-18T00:26:54Z"},{"alias_kind":"pith_short_12","alias_value":"H6AOW6YPKLRR","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_16","alias_value":"H6AOW6YPKLRRVX3B","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_8","alias_value":"H6AOW6YP","created_at":"2026-05-18T12:31:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:H6AOW6YPKLRRVX3BD3TT72UGSC","target":"record","payload":{"canonical_record":{"source":{"id":"1708.09203","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-08-30T10:18:06Z","cross_cats_sorted":[],"title_canon_sha256":"902a819663f28b0a3bb919026df3ce89e0613281ce261dbbe05bc73039c4c21c","abstract_canon_sha256":"3f52662bf8cd861ca3647667e68f77d9bc755a845f4ab0df69dc2d0815f10b0b"},"schema_version":"1.0"},"canonical_sha256":"3f80eb7b0f52e31adf611ee73fea8690b99d128a36ad24a63cc46935ef8e028f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:26:54.348362Z","signature_b64":"gmYJncRUL/mSO4EKAw0EhhaxU7Itwd3Z3zsZrXCXY7uDBwk+PJgh/g41f70r8xWF26ie+DD3MfJE4MfLe7PMCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3f80eb7b0f52e31adf611ee73fea8690b99d128a36ad24a63cc46935ef8e028f","last_reissued_at":"2026-05-18T00:26:54.347746Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:26:54.347746Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1708.09203","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:26:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kFghJqQ46p6mWMF7XukicPt6Cvdw90MmQ9X34MxbBV8XL/yXYgRsqB0zuj7onXjFkVHHuKt7vPhvNnaasc2sCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T21:46:33.020680Z"},"content_sha256":"9e1bb7c1bdba9bf171ceaf2da26908364a2ecda603185a3665f7cd31e8a3c1bb","schema_version":"1.0","event_id":"sha256:9e1bb7c1bdba9bf171ceaf2da26908364a2ecda603185a3665f7cd31e8a3c1bb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:H6AOW6YPKLRRVX3BD3TT72UGSC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Correcting the extended-source calibration for the Herschel-SPIRE Fourier-Transform Spectrometer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. Papageorgiou, B. Schulz, C. Benson, C. North, C. Pearson, D. A. Naylor, E.T. Polehampton, G. Bendo, G. Makiwa, Ivan Valtchanov, J. Scott, L. Conversi, L.D. Spencer, M.H.D. van der Wiel, M.J. Griffin, N. Lu, N. Marchili, R.A. Meyer, R. Hopwood, R. Wu, T. Fulton, T. Joubaud, T. Lim","submitted_at":"2017-08-30T10:18:06Z","abstract_excerpt":"We describe an update to the Herschel-SPIRE Fourier-Transform Spectrometer (FTS) calibration for extended sources, which incorporates a correction for the frequency-dependent far-field feedhorn efficiency, $\\eta_\\mathrm{FF}$. This significant correction affects all FTS extended-source calibrated spectra in sparse or mapping mode, regardless of the spectral resolution. Line fluxes and continuum levels are underestimated by factors of 1.3-2 in the Spectrometer Long-Wavelength band (SLW, 447-1018 GHz; 671-294 $\\mu$m) and 1.4-1.5 in the Spectrometer Short-Wavelength band (SSW, 944-1568 GHz; 318-19"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.09203","kind":"arxiv","version":2},"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":"2026-05-18T00:26:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6+5UYEdEs/dpA4BCm3GCXNUhpxnhE34z7OmLLTEbdLbGzADdYhYU9ItIu8Lu3D58VfVTfeLA7uEh6r7EfHRBDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T21:46:33.021032Z"},"content_sha256":"8c5efb558902d607c0a7931cb0dd1583988b8d56696557dfd7c3846ed40ff82e","schema_version":"1.0","event_id":"sha256:8c5efb558902d607c0a7931cb0dd1583988b8d56696557dfd7c3846ed40ff82e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H6AOW6YPKLRRVX3BD3TT72UGSC/bundle.json","state_url":"https://pith.science/pith/H6AOW6YPKLRRVX3BD3TT72UGSC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H6AOW6YPKLRRVX3BD3TT72UGSC/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":"2026-06-03T21:46:33Z","links":{"resolver":"https://pith.science/pith/H6AOW6YPKLRRVX3BD3TT72UGSC","bundle":"https://pith.science/pith/H6AOW6YPKLRRVX3BD3TT72UGSC/bundle.json","state":"https://pith.science/pith/H6AOW6YPKLRRVX3BD3TT72UGSC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H6AOW6YPKLRRVX3BD3TT72UGSC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:H6AOW6YPKLRRVX3BD3TT72UGSC","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":"3f52662bf8cd861ca3647667e68f77d9bc755a845f4ab0df69dc2d0815f10b0b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-08-30T10:18:06Z","title_canon_sha256":"902a819663f28b0a3bb919026df3ce89e0613281ce261dbbe05bc73039c4c21c"},"schema_version":"1.0","source":{"id":"1708.09203","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.09203","created_at":"2026-05-18T00:26:54Z"},{"alias_kind":"arxiv_version","alias_value":"1708.09203v2","created_at":"2026-05-18T00:26:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.09203","created_at":"2026-05-18T00:26:54Z"},{"alias_kind":"pith_short_12","alias_value":"H6AOW6YPKLRR","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_16","alias_value":"H6AOW6YPKLRRVX3B","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_8","alias_value":"H6AOW6YP","created_at":"2026-05-18T12:31:18Z"}],"graph_snapshots":[{"event_id":"sha256:8c5efb558902d607c0a7931cb0dd1583988b8d56696557dfd7c3846ed40ff82e","target":"graph","created_at":"2026-05-18T00:26:54Z","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 describe an update to the Herschel-SPIRE Fourier-Transform Spectrometer (FTS) calibration for extended sources, which incorporates a correction for the frequency-dependent far-field feedhorn efficiency, $\\eta_\\mathrm{FF}$. This significant correction affects all FTS extended-source calibrated spectra in sparse or mapping mode, regardless of the spectral resolution. Line fluxes and continuum levels are underestimated by factors of 1.3-2 in the Spectrometer Long-Wavelength band (SLW, 447-1018 GHz; 671-294 $\\mu$m) and 1.4-1.5 in the Spectrometer Short-Wavelength band (SSW, 944-1568 GHz; 318-19","authors_text":"A. Papageorgiou, B. Schulz, C. Benson, C. North, C. Pearson, D. A. Naylor, E.T. Polehampton, G. Bendo, G. Makiwa, Ivan Valtchanov, J. Scott, L. Conversi, L.D. Spencer, M.H.D. van der Wiel, M.J. Griffin, N. Lu, N. Marchili, R.A. Meyer, R. Hopwood, R. Wu, T. Fulton, T. Joubaud, T. Lim","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-08-30T10:18:06Z","title":"Correcting the extended-source calibration for the Herschel-SPIRE Fourier-Transform Spectrometer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.09203","kind":"arxiv","version":2},"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":"sha256:9e1bb7c1bdba9bf171ceaf2da26908364a2ecda603185a3665f7cd31e8a3c1bb","target":"record","created_at":"2026-05-18T00:26:54Z","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":"3f52662bf8cd861ca3647667e68f77d9bc755a845f4ab0df69dc2d0815f10b0b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-08-30T10:18:06Z","title_canon_sha256":"902a819663f28b0a3bb919026df3ce89e0613281ce261dbbe05bc73039c4c21c"},"schema_version":"1.0","source":{"id":"1708.09203","kind":"arxiv","version":2}},"canonical_sha256":"3f80eb7b0f52e31adf611ee73fea8690b99d128a36ad24a63cc46935ef8e028f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3f80eb7b0f52e31adf611ee73fea8690b99d128a36ad24a63cc46935ef8e028f","first_computed_at":"2026-05-18T00:26:54.347746Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:26:54.347746Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gmYJncRUL/mSO4EKAw0EhhaxU7Itwd3Z3zsZrXCXY7uDBwk+PJgh/g41f70r8xWF26ie+DD3MfJE4MfLe7PMCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:26:54.348362Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.09203","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9e1bb7c1bdba9bf171ceaf2da26908364a2ecda603185a3665f7cd31e8a3c1bb","sha256:8c5efb558902d607c0a7931cb0dd1583988b8d56696557dfd7c3846ed40ff82e"],"state_sha256":"995797d9fb4c5e037f6b58cecf1879623a597e9a94b3ebe9bb7b312b525f2b25"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yj9r5Qh8fTjljdqsoWgKKcPZIIT4tk7KKrzYzDhlzkfupdKnPYU3RibhKNRJIGLQuvb0ilSgexKoM4492FzVAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T21:46:33.023171Z","bundle_sha256":"a7075908ef34b8d494e99327e60d9bb941d9bcfb68ecc1358d5a253cd129c38a"}}