{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:PYU6MTX6GO4KUCPSTLAFEHVUUP","short_pith_number":"pith:PYU6MTX6","canonical_record":{"source":{"id":"1308.6278","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-08-28T20:00:00Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"075a17d2883ad0ab39370e93a98df64bf98602609900e895c045a83c90c1530e","abstract_canon_sha256":"78824d4b718938ddec8f4d5835da0c5339f4cebca112e301a8b3d8ce8ae3b34f"},"schema_version":"1.0"},"canonical_sha256":"7e29e64efe33b8aa09f29ac0521eb4a3f037bd0629f38827b106ce7a5af160a5","source":{"kind":"arxiv","id":"1308.6278","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.6278","created_at":"2026-05-18T01:47:57Z"},{"alias_kind":"arxiv_version","alias_value":"1308.6278v2","created_at":"2026-05-18T01:47:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.6278","created_at":"2026-05-18T01:47:57Z"},{"alias_kind":"pith_short_12","alias_value":"PYU6MTX6GO4K","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_16","alias_value":"PYU6MTX6GO4KUCPS","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_8","alias_value":"PYU6MTX6","created_at":"2026-05-18T12:27:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:PYU6MTX6GO4KUCPSTLAFEHVUUP","target":"record","payload":{"canonical_record":{"source":{"id":"1308.6278","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-08-28T20:00:00Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"075a17d2883ad0ab39370e93a98df64bf98602609900e895c045a83c90c1530e","abstract_canon_sha256":"78824d4b718938ddec8f4d5835da0c5339f4cebca112e301a8b3d8ce8ae3b34f"},"schema_version":"1.0"},"canonical_sha256":"7e29e64efe33b8aa09f29ac0521eb4a3f037bd0629f38827b106ce7a5af160a5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:47:57.243868Z","signature_b64":"l4L1/kTbrf9deWhdzxQeeS9d5PSnDqMcoxjNPPuZdJOo2I6pdW6tMH7uDrEBB79KsaFL3DeovNAzF/5vjOQLDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7e29e64efe33b8aa09f29ac0521eb4a3f037bd0629f38827b106ce7a5af160a5","last_reissued_at":"2026-05-18T01:47:57.243258Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:47:57.243258Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1308.6278","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":"2026-05-18T01:47:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p0miUogOJsxpMjMN+e24P+jtcIoxe76FpIOKqlDVDNBQG3RxYtAzdRn7+8F5S01lbNESEhDiZnIzuGRyJakeAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-22T14:11:19.323037Z"},"content_sha256":"96c35ca59d9eb23b3fb51db8c22eb567bb84b2e1303f435e0ea382a42b318204","schema_version":"1.0","event_id":"sha256:96c35ca59d9eb23b3fb51db8c22eb567bb84b2e1303f435e0ea382a42b318204"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:PYU6MTX6GO4KUCPSTLAFEHVUUP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Probing the cosmic-ray content of galaxy clusters by stacking Fermi-LAT count maps","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.HE","authors_text":"A. Manalaysay, B. Huber, C. Farnier, C.Tchernin, D. Eckert, R. Walter, U. Straumann","submitted_at":"2013-08-28T20:00:00Z","abstract_excerpt":"Observations in radio have shown that galaxy clusters are giant reservoirs of cosmic rays (CR). Although a gamma- ray signal from the cluster volume is expected to arise through interactions of CR protons with the ambient plasma, a confirming observation is still missing. We search for a cumulative gamma-ray emission in direction of galaxy clusters by analysing a collection of stacked Fermi-LAT count maps. Additionally, we investigate possible systematic differences in the emission between cool-core and non-cool core cluster populations. Making use of a sample of 53 clusters selected from the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.6278","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":"2026-05-18T01:47:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ble9ia9Z8+mCxHgO1ZARIVI7qD3cVPpfUe9v3prZyT4q8jrvVucKVtkPKhU79GaRb6TO7k7IBxyBCe3laM49BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-22T14:11:19.323403Z"},"content_sha256":"da945fbaa0594d25d1b7b6ed68ff5116e6bb8471de0966f42c81cc4a6b57980f","schema_version":"1.0","event_id":"sha256:da945fbaa0594d25d1b7b6ed68ff5116e6bb8471de0966f42c81cc4a6b57980f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PYU6MTX6GO4KUCPSTLAFEHVUUP/bundle.json","state_url":"https://pith.science/pith/PYU6MTX6GO4KUCPSTLAFEHVUUP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PYU6MTX6GO4KUCPSTLAFEHVUUP/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":"2026-07-22T14:11:19Z","links":{"resolver":"https://pith.science/pith/PYU6MTX6GO4KUCPSTLAFEHVUUP","bundle":"https://pith.science/pith/PYU6MTX6GO4KUCPSTLAFEHVUUP/bundle.json","state":"https://pith.science/pith/PYU6MTX6GO4KUCPSTLAFEHVUUP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PYU6MTX6GO4KUCPSTLAFEHVUUP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:PYU6MTX6GO4KUCPSTLAFEHVUUP","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":"78824d4b718938ddec8f4d5835da0c5339f4cebca112e301a8b3d8ce8ae3b34f","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-08-28T20:00:00Z","title_canon_sha256":"075a17d2883ad0ab39370e93a98df64bf98602609900e895c045a83c90c1530e"},"schema_version":"1.0","source":{"id":"1308.6278","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.6278","created_at":"2026-05-18T01:47:57Z"},{"alias_kind":"arxiv_version","alias_value":"1308.6278v2","created_at":"2026-05-18T01:47:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.6278","created_at":"2026-05-18T01:47:57Z"},{"alias_kind":"pith_short_12","alias_value":"PYU6MTX6GO4K","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_16","alias_value":"PYU6MTX6GO4KUCPS","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_8","alias_value":"PYU6MTX6","created_at":"2026-05-18T12:27:57Z"}],"graph_snapshots":[{"event_id":"sha256:da945fbaa0594d25d1b7b6ed68ff5116e6bb8471de0966f42c81cc4a6b57980f","target":"graph","created_at":"2026-05-18T01:47:57Z","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":"Observations in radio have shown that galaxy clusters are giant reservoirs of cosmic rays (CR). Although a gamma- ray signal from the cluster volume is expected to arise through interactions of CR protons with the ambient plasma, a confirming observation is still missing. We search for a cumulative gamma-ray emission in direction of galaxy clusters by analysing a collection of stacked Fermi-LAT count maps. Additionally, we investigate possible systematic differences in the emission between cool-core and non-cool core cluster populations. Making use of a sample of 53 clusters selected from the ","authors_text":"A. Manalaysay, B. Huber, C. Farnier, C.Tchernin, D. Eckert, R. Walter, U. Straumann","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-08-28T20:00:00Z","title":"Probing the cosmic-ray content of galaxy clusters by stacking Fermi-LAT count maps"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.6278","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":"sha256:96c35ca59d9eb23b3fb51db8c22eb567bb84b2e1303f435e0ea382a42b318204","target":"record","created_at":"2026-05-18T01:47:57Z","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":"78824d4b718938ddec8f4d5835da0c5339f4cebca112e301a8b3d8ce8ae3b34f","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-08-28T20:00:00Z","title_canon_sha256":"075a17d2883ad0ab39370e93a98df64bf98602609900e895c045a83c90c1530e"},"schema_version":"1.0","source":{"id":"1308.6278","kind":"arxiv","version":2}},"canonical_sha256":"7e29e64efe33b8aa09f29ac0521eb4a3f037bd0629f38827b106ce7a5af160a5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7e29e64efe33b8aa09f29ac0521eb4a3f037bd0629f38827b106ce7a5af160a5","first_computed_at":"2026-05-18T01:47:57.243258Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:47:57.243258Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"l4L1/kTbrf9deWhdzxQeeS9d5PSnDqMcoxjNPPuZdJOo2I6pdW6tMH7uDrEBB79KsaFL3DeovNAzF/5vjOQLDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:47:57.243868Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.6278","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:96c35ca59d9eb23b3fb51db8c22eb567bb84b2e1303f435e0ea382a42b318204","sha256:da945fbaa0594d25d1b7b6ed68ff5116e6bb8471de0966f42c81cc4a6b57980f"],"state_sha256":"01b42c9f226b9b04c34b7423b694a0f491f290e6b767957694dccb1d1fe66016"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QeudacM88xq4N/TBvv6paqzBTDwtz9FmBbnvz+8MVMXmqifnQLFiPs4drr28Vi8JARc2wdPaGLJNdwgDXgpvBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-22T14:11:19.325451Z","bundle_sha256":"51d79e4262c346e2c26dbe83c1d4c03b25fd19c4a57a7534fd69e18a80d3c597"}}