{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:NBBLHZPSZL6FM4ZRU5WNKFGX7E","short_pith_number":"pith:NBBLHZPS","canonical_record":{"source":{"id":"1803.06343","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-03-14T18:00:01Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"f6193fca3bd1a4a5e3f7ff79616100c24df301a52f1beed0ba2bf9033a8ea5a2","abstract_canon_sha256":"b6c669f321e3c57efb123a95147b050ea09f07af3b3a26e8ccb1597558ba6487"},"schema_version":"1.0"},"canonical_sha256":"6842b3e5f2cafc567331a76cd514d7f932505b62ec3d9ceddede20ddcb71b276","source":{"kind":"arxiv","id":"1803.06343","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.06343","created_at":"2026-05-17T23:59:53Z"},{"alias_kind":"arxiv_version","alias_value":"1803.06343v2","created_at":"2026-05-17T23:59:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.06343","created_at":"2026-05-17T23:59:53Z"},{"alias_kind":"pith_short_12","alias_value":"NBBLHZPSZL6F","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"NBBLHZPSZL6FM4ZR","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"NBBLHZPS","created_at":"2026-05-18T12:32:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:NBBLHZPSZL6FM4ZRU5WNKFGX7E","target":"record","payload":{"canonical_record":{"source":{"id":"1803.06343","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-03-14T18:00:01Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"f6193fca3bd1a4a5e3f7ff79616100c24df301a52f1beed0ba2bf9033a8ea5a2","abstract_canon_sha256":"b6c669f321e3c57efb123a95147b050ea09f07af3b3a26e8ccb1597558ba6487"},"schema_version":"1.0"},"canonical_sha256":"6842b3e5f2cafc567331a76cd514d7f932505b62ec3d9ceddede20ddcb71b276","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:59:53.068086Z","signature_b64":"gtKVMVozbBd88wl9wFoF8sf4QVjgwFglTXQJLZhgHADeNCPcwS5TP2ermiZNl23Kv/AufnLMqJx3xttQ+PadBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6842b3e5f2cafc567331a76cd514d7f932505b62ec3d9ceddede20ddcb71b276","last_reissued_at":"2026-05-17T23:59:53.067605Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:59:53.067605Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.06343","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":"2026-05-17T23:59:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4vlZsY99ozoJ3rc/IOYM6pES7FODYrl62MP3Fhn7mQDMuXxPpXNIRQGSqOPOesyhIQJFMa3rCgxvuXAj5dpUBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T12:15:09.842084Z"},"content_sha256":"ecb8a2b115919545a60683586bb8b5745bdfbeac9492e4faa0968b94cc7a3403","schema_version":"1.0","event_id":"sha256:ecb8a2b115919545a60683586bb8b5745bdfbeac9492e4faa0968b94cc7a3403"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:NBBLHZPSZL6FM4ZRU5WNKFGX7E","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Forward Modeling of Spectroscopic Galaxy Surveys: Application to SDSS","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Adam Amara, Alexandre Refregier, Andrina Nicola, Chihway Chang, J\\\"org Herbel, Julian Riebartsch, Laurenz Gamper, Luca Tortorelli, Martina Fagioli","submitted_at":"2018-03-14T18:00:01Z","abstract_excerpt":"Galaxy spectra are essential to probe the spatial distribution of galaxies in our Universe. To better interpret current and future spectroscopic galaxy redshift surveys, it is important to be able to simulate these data sets. We describe Uspec, a forward modeling tool to generate galaxy spectra taking into account some intrinsic galaxy properties as well as instrumental responses of a given telescope. The model for the intrinsic properties of the galaxy population, i.e., the luminosity functions, and size and spectral coefficients distribu- tions, was developed in an earlier work for broad-ban"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.06343","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":"2026-05-17T23:59:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ytyEq4ODIzbzJTS+vD0bBzkmvsy/eWGUFSNhICbtzOfCwF3lzUAQxD06Vi4pCfsVQgV/x+/aEs3d27wDIGffDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T12:15:09.842450Z"},"content_sha256":"6c76f94444a692b3456b3ee1873bc57a308662992ad4c4d3f756c142b62f6a4f","schema_version":"1.0","event_id":"sha256:6c76f94444a692b3456b3ee1873bc57a308662992ad4c4d3f756c142b62f6a4f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NBBLHZPSZL6FM4ZRU5WNKFGX7E/bundle.json","state_url":"https://pith.science/pith/NBBLHZPSZL6FM4ZRU5WNKFGX7E/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NBBLHZPSZL6FM4ZRU5WNKFGX7E/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":"2026-06-01T12:15:09Z","links":{"resolver":"https://pith.science/pith/NBBLHZPSZL6FM4ZRU5WNKFGX7E","bundle":"https://pith.science/pith/NBBLHZPSZL6FM4ZRU5WNKFGX7E/bundle.json","state":"https://pith.science/pith/NBBLHZPSZL6FM4ZRU5WNKFGX7E/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NBBLHZPSZL6FM4ZRU5WNKFGX7E/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:NBBLHZPSZL6FM4ZRU5WNKFGX7E","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":"b6c669f321e3c57efb123a95147b050ea09f07af3b3a26e8ccb1597558ba6487","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-03-14T18:00:01Z","title_canon_sha256":"f6193fca3bd1a4a5e3f7ff79616100c24df301a52f1beed0ba2bf9033a8ea5a2"},"schema_version":"1.0","source":{"id":"1803.06343","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.06343","created_at":"2026-05-17T23:59:53Z"},{"alias_kind":"arxiv_version","alias_value":"1803.06343v2","created_at":"2026-05-17T23:59:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.06343","created_at":"2026-05-17T23:59:53Z"},{"alias_kind":"pith_short_12","alias_value":"NBBLHZPSZL6F","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"NBBLHZPSZL6FM4ZR","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"NBBLHZPS","created_at":"2026-05-18T12:32:40Z"}],"graph_snapshots":[{"event_id":"sha256:6c76f94444a692b3456b3ee1873bc57a308662992ad4c4d3f756c142b62f6a4f","target":"graph","created_at":"2026-05-17T23:59:53Z","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":"Galaxy spectra are essential to probe the spatial distribution of galaxies in our Universe. To better interpret current and future spectroscopic galaxy redshift surveys, it is important to be able to simulate these data sets. We describe Uspec, a forward modeling tool to generate galaxy spectra taking into account some intrinsic galaxy properties as well as instrumental responses of a given telescope. The model for the intrinsic properties of the galaxy population, i.e., the luminosity functions, and size and spectral coefficients distribu- tions, was developed in an earlier work for broad-ban","authors_text":"Adam Amara, Alexandre Refregier, Andrina Nicola, Chihway Chang, J\\\"org Herbel, Julian Riebartsch, Laurenz Gamper, Luca Tortorelli, Martina Fagioli","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-03-14T18:00:01Z","title":"Forward Modeling of Spectroscopic Galaxy Surveys: Application to SDSS"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.06343","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:ecb8a2b115919545a60683586bb8b5745bdfbeac9492e4faa0968b94cc7a3403","target":"record","created_at":"2026-05-17T23:59:53Z","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":"b6c669f321e3c57efb123a95147b050ea09f07af3b3a26e8ccb1597558ba6487","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-03-14T18:00:01Z","title_canon_sha256":"f6193fca3bd1a4a5e3f7ff79616100c24df301a52f1beed0ba2bf9033a8ea5a2"},"schema_version":"1.0","source":{"id":"1803.06343","kind":"arxiv","version":2}},"canonical_sha256":"6842b3e5f2cafc567331a76cd514d7f932505b62ec3d9ceddede20ddcb71b276","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6842b3e5f2cafc567331a76cd514d7f932505b62ec3d9ceddede20ddcb71b276","first_computed_at":"2026-05-17T23:59:53.067605Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:59:53.067605Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gtKVMVozbBd88wl9wFoF8sf4QVjgwFglTXQJLZhgHADeNCPcwS5TP2ermiZNl23Kv/AufnLMqJx3xttQ+PadBg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:59:53.068086Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.06343","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ecb8a2b115919545a60683586bb8b5745bdfbeac9492e4faa0968b94cc7a3403","sha256:6c76f94444a692b3456b3ee1873bc57a308662992ad4c4d3f756c142b62f6a4f"],"state_sha256":"bf4098ec40cc5d4138b76e665742aa31398215ac6d87c99cda9c4b5925db674b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Q6lLkuwuJFuWvIb1eWTID1qt07iFXB3wUL2rlZ/i5HeUWleYtsci/dmNEumnGrg2BRr6stxEUmnbhWJQxH8fCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T12:15:09.844368Z","bundle_sha256":"335fc42dc37c478bfd4f3700ef8c0ac592efb41ebb01c1c1e33b35975a1f3327"}}