{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:QHT7B5TZMQBMBJ5TVBWJC4FBLO","short_pith_number":"pith:QHT7B5TZ","canonical_record":{"source":{"id":"2008.02639","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-08-05T10:03:09Z","cross_cats_sorted":[],"title_canon_sha256":"a208e7f485848c644f836f2a457808006faa9472a4630e8ce99ce26f51fb5ace","abstract_canon_sha256":"6d480e889541e72ce9d4dd2dd871782bfdf70c3e47db9fa8ef503ce8a106cefe"},"schema_version":"1.0"},"canonical_sha256":"81e7f0f6796402c0a7b3a86c9170a15ba349ec62fb7c39401515d64605f7a8d6","source":{"kind":"arxiv","id":"2008.02639","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.02639","created_at":"2026-07-05T01:53:54Z"},{"alias_kind":"arxiv_version","alias_value":"2008.02639v1","created_at":"2026-07-05T01:53:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.02639","created_at":"2026-07-05T01:53:54Z"},{"alias_kind":"pith_short_12","alias_value":"QHT7B5TZMQBM","created_at":"2026-07-05T01:53:54Z"},{"alias_kind":"pith_short_16","alias_value":"QHT7B5TZMQBMBJ5T","created_at":"2026-07-05T01:53:54Z"},{"alias_kind":"pith_short_8","alias_value":"QHT7B5TZ","created_at":"2026-07-05T01:53:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:QHT7B5TZMQBMBJ5TVBWJC4FBLO","target":"record","payload":{"canonical_record":{"source":{"id":"2008.02639","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-08-05T10:03:09Z","cross_cats_sorted":[],"title_canon_sha256":"a208e7f485848c644f836f2a457808006faa9472a4630e8ce99ce26f51fb5ace","abstract_canon_sha256":"6d480e889541e72ce9d4dd2dd871782bfdf70c3e47db9fa8ef503ce8a106cefe"},"schema_version":"1.0"},"canonical_sha256":"81e7f0f6796402c0a7b3a86c9170a15ba349ec62fb7c39401515d64605f7a8d6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:53:54.911158Z","signature_b64":"TdK7jBp9iD/UuoV5ZNIhXrlW5UMvjMbNxR8wjdFjZThJvE3bQIVIsUfAHX2zVfN0A0qtU/r5d7/TaQPsWPsdBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"81e7f0f6796402c0a7b3a86c9170a15ba349ec62fb7c39401515d64605f7a8d6","last_reissued_at":"2026-07-05T01:53:54.910729Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:53:54.910729Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2008.02639","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":"2026-07-05T01:53:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bszB4p/fdPI+pxQI4SelZH5zlGS8g/feMApaa2l+unYou7EjhLP+s7RNLBTyihdu0Amh9NYaLgbhw2MekHh+DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-28T04:17:01.610470Z"},"content_sha256":"7ff2983f114bb129d7040565fbbbda504d2afb340408411a62785548f6470c2d","schema_version":"1.0","event_id":"sha256:7ff2983f114bb129d7040565fbbbda504d2afb340408411a62785548f6470c2d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:QHT7B5TZMQBMBJ5TVBWJC4FBLO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Exploring reionisation and high-z galaxy observables with recent multi-redshift MWA upper limits on the 21-cm signal","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Bart Pindor, Bradley Greig, Cathryn M. Trott, J. Stuart B. Wyithe, Nichole Barry, Rachel L. Webster, Simon J. Mutch","submitted_at":"2020-08-05T10:03:09Z","abstract_excerpt":"We use the latest multi-redshift ($z=6.5-8.7$) upper limits on the 21-cm signal from the Murchison Widefield Array (MWA) to explore astrophysical models which are inconsistent with the data. These upper limits are achieved using 298 h of carefully excised data over four observing seasons. To explore these upper limits in the context of reionisation astrophysics, we use 21CMMC. We then connect the disfavoured regions of parameter space to existing observational constraints on reionisation such as high-$z$ galaxy ultra-violet (UV) luminosity functions, background UV photoionisation rate, interga"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.02639","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/2008.02639/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":"2026-07-05T01:53:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H+4eHSvR2yz2QqeknNjx/6NHcmXAxncBIr3gepj3V+e6GmV+Xi49YJkfos0XOm+QA7t08xtPFAH7X8lLB7K+CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-28T04:17:01.610866Z"},"content_sha256":"55a5cf6ad05a2296b59346ec8feb21f8dd01c75999db7d41c5e68be094c82f82","schema_version":"1.0","event_id":"sha256:55a5cf6ad05a2296b59346ec8feb21f8dd01c75999db7d41c5e68be094c82f82"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QHT7B5TZMQBMBJ5TVBWJC4FBLO/bundle.json","state_url":"https://pith.science/pith/QHT7B5TZMQBMBJ5TVBWJC4FBLO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QHT7B5TZMQBMBJ5TVBWJC4FBLO/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":"2026-07-28T04:17:01Z","links":{"resolver":"https://pith.science/pith/QHT7B5TZMQBMBJ5TVBWJC4FBLO","bundle":"https://pith.science/pith/QHT7B5TZMQBMBJ5TVBWJC4FBLO/bundle.json","state":"https://pith.science/pith/QHT7B5TZMQBMBJ5TVBWJC4FBLO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QHT7B5TZMQBMBJ5TVBWJC4FBLO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:QHT7B5TZMQBMBJ5TVBWJC4FBLO","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":"6d480e889541e72ce9d4dd2dd871782bfdf70c3e47db9fa8ef503ce8a106cefe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-08-05T10:03:09Z","title_canon_sha256":"a208e7f485848c644f836f2a457808006faa9472a4630e8ce99ce26f51fb5ace"},"schema_version":"1.0","source":{"id":"2008.02639","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.02639","created_at":"2026-07-05T01:53:54Z"},{"alias_kind":"arxiv_version","alias_value":"2008.02639v1","created_at":"2026-07-05T01:53:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.02639","created_at":"2026-07-05T01:53:54Z"},{"alias_kind":"pith_short_12","alias_value":"QHT7B5TZMQBM","created_at":"2026-07-05T01:53:54Z"},{"alias_kind":"pith_short_16","alias_value":"QHT7B5TZMQBMBJ5T","created_at":"2026-07-05T01:53:54Z"},{"alias_kind":"pith_short_8","alias_value":"QHT7B5TZ","created_at":"2026-07-05T01:53:54Z"}],"graph_snapshots":[{"event_id":"sha256:55a5cf6ad05a2296b59346ec8feb21f8dd01c75999db7d41c5e68be094c82f82","target":"graph","created_at":"2026-07-05T01:53:54Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2008.02639/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We use the latest multi-redshift ($z=6.5-8.7$) upper limits on the 21-cm signal from the Murchison Widefield Array (MWA) to explore astrophysical models which are inconsistent with the data. These upper limits are achieved using 298 h of carefully excised data over four observing seasons. To explore these upper limits in the context of reionisation astrophysics, we use 21CMMC. We then connect the disfavoured regions of parameter space to existing observational constraints on reionisation such as high-$z$ galaxy ultra-violet (UV) luminosity functions, background UV photoionisation rate, interga","authors_text":"Bart Pindor, Bradley Greig, Cathryn M. Trott, J. Stuart B. Wyithe, Nichole Barry, Rachel L. Webster, Simon J. Mutch","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-08-05T10:03:09Z","title":"Exploring reionisation and high-z galaxy observables with recent multi-redshift MWA upper limits on the 21-cm signal"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.02639","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":"sha256:7ff2983f114bb129d7040565fbbbda504d2afb340408411a62785548f6470c2d","target":"record","created_at":"2026-07-05T01:53:54Z","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":"6d480e889541e72ce9d4dd2dd871782bfdf70c3e47db9fa8ef503ce8a106cefe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-08-05T10:03:09Z","title_canon_sha256":"a208e7f485848c644f836f2a457808006faa9472a4630e8ce99ce26f51fb5ace"},"schema_version":"1.0","source":{"id":"2008.02639","kind":"arxiv","version":1}},"canonical_sha256":"81e7f0f6796402c0a7b3a86c9170a15ba349ec62fb7c39401515d64605f7a8d6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"81e7f0f6796402c0a7b3a86c9170a15ba349ec62fb7c39401515d64605f7a8d6","first_computed_at":"2026-07-05T01:53:54.910729Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:53:54.910729Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TdK7jBp9iD/UuoV5ZNIhXrlW5UMvjMbNxR8wjdFjZThJvE3bQIVIsUfAHX2zVfN0A0qtU/r5d7/TaQPsWPsdBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:53:54.911158Z","signed_message":"canonical_sha256_bytes"},"source_id":"2008.02639","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7ff2983f114bb129d7040565fbbbda504d2afb340408411a62785548f6470c2d","sha256:55a5cf6ad05a2296b59346ec8feb21f8dd01c75999db7d41c5e68be094c82f82"],"state_sha256":"e5b6a458debddbf4392b34d3877e9a849625d7f408776ee83c36068b5fb6f48f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"daiMifro1Ey2ZtBd7QZtGMet4rc2jVBGij1BF5r/FVVBnS7jqqPrgISek8zqOcpymH+VrSyDUuifo9xRTwBSCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-28T04:17:01.613447Z","bundle_sha256":"237c814540352815aed2f907075d9ba0df683eb92d05968322a229bb7a9e8cfc"}}