{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:FENFNAAQYUBHFTTILLRWKUEHZI","short_pith_number":"pith:FENFNAAQ","canonical_record":{"source":{"id":"1503.02641","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-03-09T19:41:42Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"cfef6523cf69d70b307bd703613a820ef898ef463e2e3298c40f0c169da46fab","abstract_canon_sha256":"8c20d5a4069520c1b101dd52a3b7a1e4124f7f267352dc392de4439f98aed775"},"schema_version":"1.0"},"canonical_sha256":"291a568010c50272ce685ae3655087ca072754d0bb58a4f56e1021e9b2aa2ce4","source":{"kind":"arxiv","id":"1503.02641","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.02641","created_at":"2026-05-18T01:25:01Z"},{"alias_kind":"arxiv_version","alias_value":"1503.02641v2","created_at":"2026-05-18T01:25:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.02641","created_at":"2026-05-18T01:25:01Z"},{"alias_kind":"pith_short_12","alias_value":"FENFNAAQYUBH","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"FENFNAAQYUBHFTTI","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"FENFNAAQ","created_at":"2026-05-18T12:29:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:FENFNAAQYUBHFTTILLRWKUEHZI","target":"record","payload":{"canonical_record":{"source":{"id":"1503.02641","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-03-09T19:41:42Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"cfef6523cf69d70b307bd703613a820ef898ef463e2e3298c40f0c169da46fab","abstract_canon_sha256":"8c20d5a4069520c1b101dd52a3b7a1e4124f7f267352dc392de4439f98aed775"},"schema_version":"1.0"},"canonical_sha256":"291a568010c50272ce685ae3655087ca072754d0bb58a4f56e1021e9b2aa2ce4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:25:01.580602Z","signature_b64":"rMYc1G6+yfHHmfMvFG5AAf4QyPygpoj8E7zHEmcwzD2VttbcVH5kLryQ08QjgaewsRDvVQF63ZDW3n9v/2VwAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"291a568010c50272ce685ae3655087ca072754d0bb58a4f56e1021e9b2aa2ce4","last_reissued_at":"2026-05-18T01:25:01.579864Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:25:01.579864Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.02641","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":"2026-05-18T01:25:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fUkO4zjlSE+W2K7oNkBDyw7RQkbbHxw2dbTG4rpWNMccjRAaTEaFcbMPOFpsrgvB3zEkzBspsGVHpjRdfkYuCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T06:48:11.392229Z"},"content_sha256":"504bfcf2c51396fadbd253b1af8756dfb20b60ba3452259d6dc5b107bf9154c8","schema_version":"1.0","event_id":"sha256:504bfcf2c51396fadbd253b1af8756dfb20b60ba3452259d6dc5b107bf9154c8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:FENFNAAQYUBHFTTILLRWKUEHZI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Searching for Dark Matter Annihilation from Milky Way Dwarf Spheroidal Galaxies with Six Years of Fermi-LAT Data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"astro-ph.HE","authors_text":"Fermi-LAT Collaboration","submitted_at":"2015-03-09T19:41:42Z","abstract_excerpt":"The dwarf spheroidal satellite galaxies (dSphs) of the Milky Way are some of the most dark matter (DM) dominated objects known. We report on gamma-ray observations of Milky Way dSphs based on 6 years of Fermi Large Area Telescope data processed with the new Pass 8 event-level analysis. None of the dSphs are significantly detected in gamma rays, and we present upper limits on the DM annihilation cross section from a combined analysis of 15 dSphs. These constraints are among the strongest and most robust to date and lie below the canonical thermal relic cross section for DM of mass $\\lesssim$ 10"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.02641","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":"2026-05-18T01:25:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EkXECf8zoV8IzB5dIpcNfZVJBMAf8CJVbyKXdE0uQ0jZ0qpTz+b1RpaJZSeEwsxCOtYxC3xGf4ECod2YcOibCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T06:48:11.392588Z"},"content_sha256":"577840069359a3cdddb498b7981e5fed964dbdea1f3a251c4e979a405f9d671e","schema_version":"1.0","event_id":"sha256:577840069359a3cdddb498b7981e5fed964dbdea1f3a251c4e979a405f9d671e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FENFNAAQYUBHFTTILLRWKUEHZI/bundle.json","state_url":"https://pith.science/pith/FENFNAAQYUBHFTTILLRWKUEHZI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FENFNAAQYUBHFTTILLRWKUEHZI/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":"2026-06-02T06:48:11Z","links":{"resolver":"https://pith.science/pith/FENFNAAQYUBHFTTILLRWKUEHZI","bundle":"https://pith.science/pith/FENFNAAQYUBHFTTILLRWKUEHZI/bundle.json","state":"https://pith.science/pith/FENFNAAQYUBHFTTILLRWKUEHZI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FENFNAAQYUBHFTTILLRWKUEHZI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:FENFNAAQYUBHFTTILLRWKUEHZI","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":"8c20d5a4069520c1b101dd52a3b7a1e4124f7f267352dc392de4439f98aed775","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-03-09T19:41:42Z","title_canon_sha256":"cfef6523cf69d70b307bd703613a820ef898ef463e2e3298c40f0c169da46fab"},"schema_version":"1.0","source":{"id":"1503.02641","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.02641","created_at":"2026-05-18T01:25:01Z"},{"alias_kind":"arxiv_version","alias_value":"1503.02641v2","created_at":"2026-05-18T01:25:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.02641","created_at":"2026-05-18T01:25:01Z"},{"alias_kind":"pith_short_12","alias_value":"FENFNAAQYUBH","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"FENFNAAQYUBHFTTI","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"FENFNAAQ","created_at":"2026-05-18T12:29:19Z"}],"graph_snapshots":[{"event_id":"sha256:577840069359a3cdddb498b7981e5fed964dbdea1f3a251c4e979a405f9d671e","target":"graph","created_at":"2026-05-18T01:25:01Z","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":"The dwarf spheroidal satellite galaxies (dSphs) of the Milky Way are some of the most dark matter (DM) dominated objects known. We report on gamma-ray observations of Milky Way dSphs based on 6 years of Fermi Large Area Telescope data processed with the new Pass 8 event-level analysis. None of the dSphs are significantly detected in gamma rays, and we present upper limits on the DM annihilation cross section from a combined analysis of 15 dSphs. These constraints are among the strongest and most robust to date and lie below the canonical thermal relic cross section for DM of mass $\\lesssim$ 10","authors_text":"Fermi-LAT Collaboration","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-03-09T19:41:42Z","title":"Searching for Dark Matter Annihilation from Milky Way Dwarf Spheroidal Galaxies with Six Years of Fermi-LAT Data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.02641","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":"sha256:504bfcf2c51396fadbd253b1af8756dfb20b60ba3452259d6dc5b107bf9154c8","target":"record","created_at":"2026-05-18T01:25:01Z","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":"8c20d5a4069520c1b101dd52a3b7a1e4124f7f267352dc392de4439f98aed775","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-03-09T19:41:42Z","title_canon_sha256":"cfef6523cf69d70b307bd703613a820ef898ef463e2e3298c40f0c169da46fab"},"schema_version":"1.0","source":{"id":"1503.02641","kind":"arxiv","version":2}},"canonical_sha256":"291a568010c50272ce685ae3655087ca072754d0bb58a4f56e1021e9b2aa2ce4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"291a568010c50272ce685ae3655087ca072754d0bb58a4f56e1021e9b2aa2ce4","first_computed_at":"2026-05-18T01:25:01.579864Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:25:01.579864Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rMYc1G6+yfHHmfMvFG5AAf4QyPygpoj8E7zHEmcwzD2VttbcVH5kLryQ08QjgaewsRDvVQF63ZDW3n9v/2VwAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:25:01.580602Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.02641","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:504bfcf2c51396fadbd253b1af8756dfb20b60ba3452259d6dc5b107bf9154c8","sha256:577840069359a3cdddb498b7981e5fed964dbdea1f3a251c4e979a405f9d671e"],"state_sha256":"77a23a1da507d1047df2ee3223ee7caa640339e49e7fddef36258b150d0091c9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+vRoH29lh7ljkyVIQ8/M+ZOqr19A45T0Tyg/JN0f+tnX3Oq2gbfdLPW2FPQhcG82+9VO53hpsbJqpJNUA2z2AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T06:48:11.394581Z","bundle_sha256":"1a513110a20393b7767ab4785bfdda426e1ab7e9f8f6f2180c11c18fc90fa01f"}}