{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:KXKSI37MRCTM2SS4H5AWYDEDGS","short_pith_number":"pith:KXKSI37M","canonical_record":{"source":{"id":"1803.05952","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-03-15T19:01:11Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"bae47b75849824f9a562cb3fa1ac6bd7744a790efe27eec0d3e7e440ad2afd05","abstract_canon_sha256":"75df52ac07ebf1e126a1fa282bf27bbdb7cd962eb920e9211223c5507243d5a2"},"schema_version":"1.0"},"canonical_sha256":"55d5246fec88a6cd4a5c3f416c0c8334b5178a351afdcb257313b60d08654bd7","source":{"kind":"arxiv","id":"1803.05952","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.05952","created_at":"2026-07-05T06:21:43Z"},{"alias_kind":"arxiv_version","alias_value":"1803.05952v2","created_at":"2026-07-05T06:21:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.05952","created_at":"2026-07-05T06:21:43Z"},{"alias_kind":"pith_short_12","alias_value":"KXKSI37MRCTM","created_at":"2026-07-05T06:21:43Z"},{"alias_kind":"pith_short_16","alias_value":"KXKSI37MRCTM2SS4","created_at":"2026-07-05T06:21:43Z"},{"alias_kind":"pith_short_8","alias_value":"KXKSI37M","created_at":"2026-07-05T06:21:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:KXKSI37MRCTM2SS4H5AWYDEDGS","target":"record","payload":{"canonical_record":{"source":{"id":"1803.05952","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-03-15T19:01:11Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"bae47b75849824f9a562cb3fa1ac6bd7744a790efe27eec0d3e7e440ad2afd05","abstract_canon_sha256":"75df52ac07ebf1e126a1fa282bf27bbdb7cd962eb920e9211223c5507243d5a2"},"schema_version":"1.0"},"canonical_sha256":"55d5246fec88a6cd4a5c3f416c0c8334b5178a351afdcb257313b60d08654bd7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:21:43.148198Z","signature_b64":"HCW5DZwqIpMCxajb0ZLk5stZR+JufjKMnCgKZJ+tDvE+PHRYuFJzQmoav6Uo3AwgOGqyNiyH2ODIdfT1hnwyDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"55d5246fec88a6cd4a5c3f416c0c8334b5178a351afdcb257313b60d08654bd7","last_reissued_at":"2026-07-05T06:21:43.147719Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:21:43.147719Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.05952","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":"2026-07-05T06:21:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+YN2LJowt+fo/5P1awrK+TLOFT8ZoMebWSla7P+4mCm+CiIk97QZHeo/QsLmpzgnQf2KyA8MdafFziLxEKllBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T06:01:32.504262Z"},"content_sha256":"1aa33802cac8741a25a608625a1f589ac5fe2ad314f98706d5d413333aa05319","schema_version":"1.0","event_id":"sha256:1aa33802cac8741a25a608625a1f589ac5fe2ad314f98706d5d413333aa05319"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:KXKSI37MRCTM2SS4H5AWYDEDGS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Probing sub-galactic mass structure with the power spectrum of surface-brightness anomalies in high-resolution observations of galaxy-galaxy strong gravitational lenses. II.Observational constraints on the sub-galactic matter power spectrum","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"C. D. Fassnacht, D. Bayer, J. P. McKean, K. Glazebrook, L. V. E. Koopmans, S. Chatterjee, S. Vegetti, T. Treu","submitted_at":"2018-03-15T19:01:11Z","abstract_excerpt":"Stringent observational constraints on the sub-galactic matter power spectrum would allow one to distinguish between the concordance $\\Lambda$CDM and the various alternative dark-matter models that predict significantly different properties of mass structure in galactic haloes. Galaxy-galaxy strong gravitational lensing provides a unique opportunity to probe the sub-galactic mass structure in lens galaxies beyond the Local Group. Here, we demonstrate the first application of a novel methodology to observationally constrain the sub-galactic matter power spectrum in the inner regions of massive "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.05952","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1803.05952/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":"2026-07-05T06:21:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5f53r5dg7Eu/of10xH0cGRULLKUMhg83Jx0CO27tat39HvsfjnLZq6EZZyqMaxWS8CKskLpplECh290mcx1oDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T06:01:32.505393Z"},"content_sha256":"02c377ca71d295a18e3776acc4656950f22e8095dbabd85bb3deff6e58996281","schema_version":"1.0","event_id":"sha256:02c377ca71d295a18e3776acc4656950f22e8095dbabd85bb3deff6e58996281"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KXKSI37MRCTM2SS4H5AWYDEDGS/bundle.json","state_url":"https://pith.science/pith/KXKSI37MRCTM2SS4H5AWYDEDGS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KXKSI37MRCTM2SS4H5AWYDEDGS/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":"2026-08-15T06:01:32Z","links":{"resolver":"https://pith.science/pith/KXKSI37MRCTM2SS4H5AWYDEDGS","bundle":"https://pith.science/pith/KXKSI37MRCTM2SS4H5AWYDEDGS/bundle.json","state":"https://pith.science/pith/KXKSI37MRCTM2SS4H5AWYDEDGS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KXKSI37MRCTM2SS4H5AWYDEDGS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:KXKSI37MRCTM2SS4H5AWYDEDGS","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":"75df52ac07ebf1e126a1fa282bf27bbdb7cd962eb920e9211223c5507243d5a2","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-03-15T19:01:11Z","title_canon_sha256":"bae47b75849824f9a562cb3fa1ac6bd7744a790efe27eec0d3e7e440ad2afd05"},"schema_version":"1.0","source":{"id":"1803.05952","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.05952","created_at":"2026-07-05T06:21:43Z"},{"alias_kind":"arxiv_version","alias_value":"1803.05952v2","created_at":"2026-07-05T06:21:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.05952","created_at":"2026-07-05T06:21:43Z"},{"alias_kind":"pith_short_12","alias_value":"KXKSI37MRCTM","created_at":"2026-07-05T06:21:43Z"},{"alias_kind":"pith_short_16","alias_value":"KXKSI37MRCTM2SS4","created_at":"2026-07-05T06:21:43Z"},{"alias_kind":"pith_short_8","alias_value":"KXKSI37M","created_at":"2026-07-05T06:21:43Z"}],"graph_snapshots":[{"event_id":"sha256:02c377ca71d295a18e3776acc4656950f22e8095dbabd85bb3deff6e58996281","target":"graph","created_at":"2026-07-05T06:21:43Z","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/1803.05952/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Stringent observational constraints on the sub-galactic matter power spectrum would allow one to distinguish between the concordance $\\Lambda$CDM and the various alternative dark-matter models that predict significantly different properties of mass structure in galactic haloes. Galaxy-galaxy strong gravitational lensing provides a unique opportunity to probe the sub-galactic mass structure in lens galaxies beyond the Local Group. Here, we demonstrate the first application of a novel methodology to observationally constrain the sub-galactic matter power spectrum in the inner regions of massive ","authors_text":"C. D. Fassnacht, D. Bayer, J. P. McKean, K. Glazebrook, L. V. E. Koopmans, S. Chatterjee, S. Vegetti, T. Treu","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-03-15T19:01:11Z","title":"Probing sub-galactic mass structure with the power spectrum of surface-brightness anomalies in high-resolution observations of galaxy-galaxy strong gravitational lenses. II.Observational constraints on the sub-galactic matter power spectrum"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.05952","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":"sha256:1aa33802cac8741a25a608625a1f589ac5fe2ad314f98706d5d413333aa05319","target":"record","created_at":"2026-07-05T06:21:43Z","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":"75df52ac07ebf1e126a1fa282bf27bbdb7cd962eb920e9211223c5507243d5a2","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-03-15T19:01:11Z","title_canon_sha256":"bae47b75849824f9a562cb3fa1ac6bd7744a790efe27eec0d3e7e440ad2afd05"},"schema_version":"1.0","source":{"id":"1803.05952","kind":"arxiv","version":2}},"canonical_sha256":"55d5246fec88a6cd4a5c3f416c0c8334b5178a351afdcb257313b60d08654bd7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"55d5246fec88a6cd4a5c3f416c0c8334b5178a351afdcb257313b60d08654bd7","first_computed_at":"2026-07-05T06:21:43.147719Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:21:43.147719Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HCW5DZwqIpMCxajb0ZLk5stZR+JufjKMnCgKZJ+tDvE+PHRYuFJzQmoav6Uo3AwgOGqyNiyH2ODIdfT1hnwyDA==","signature_status":"signed_v1","signed_at":"2026-07-05T06:21:43.148198Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.05952","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1aa33802cac8741a25a608625a1f589ac5fe2ad314f98706d5d413333aa05319","sha256:02c377ca71d295a18e3776acc4656950f22e8095dbabd85bb3deff6e58996281"],"state_sha256":"fb512e35ed56524985398f934fc941cced5dac35fd9eee57aa953e357377c6f0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G3N+FjvBftJJaZy64R5ZlVgPwjq14kOVVcAg52iFWkeJbpqw5Qm9NvkNqSXE8zMsMw4ZI+n+Y9PbWlaISf9tAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T06:01:32.514422Z","bundle_sha256":"d9d200af470f522647ec330b3851d9895a59d6cd9e7d5ec10ac2da12bbeb84f2"}}