{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:YHTOGHLZHEJFTM7GSDPE6DCRY2","short_pith_number":"pith:YHTOGHLZ","canonical_record":{"source":{"id":"1707.09787","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-07-31T09:56:34Z","cross_cats_sorted":[],"title_canon_sha256":"0e3ac9a5211758ddba0f805a90e3a5c53694d47bd58af510eee771392b0471d2","abstract_canon_sha256":"a7a97b283603f06450af2d50c433e6b43eaacb479d76c146a2b6095c31a5fd79"},"schema_version":"1.0"},"canonical_sha256":"c1e6e31d79391259b3e690de4f0c51c6aaf50a12753d316ab597062654b39909","source":{"kind":"arxiv","id":"1707.09787","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.09787","created_at":"2026-05-18T00:32:50Z"},{"alias_kind":"arxiv_version","alias_value":"1707.09787v4","created_at":"2026-05-18T00:32:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.09787","created_at":"2026-05-18T00:32:50Z"},{"alias_kind":"pith_short_12","alias_value":"YHTOGHLZHEJF","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_16","alias_value":"YHTOGHLZHEJFTM7G","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_8","alias_value":"YHTOGHLZ","created_at":"2026-05-18T12:31:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:YHTOGHLZHEJFTM7GSDPE6DCRY2","target":"record","payload":{"canonical_record":{"source":{"id":"1707.09787","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-07-31T09:56:34Z","cross_cats_sorted":[],"title_canon_sha256":"0e3ac9a5211758ddba0f805a90e3a5c53694d47bd58af510eee771392b0471d2","abstract_canon_sha256":"a7a97b283603f06450af2d50c433e6b43eaacb479d76c146a2b6095c31a5fd79"},"schema_version":"1.0"},"canonical_sha256":"c1e6e31d79391259b3e690de4f0c51c6aaf50a12753d316ab597062654b39909","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:32:50.317103Z","signature_b64":"sHK9dRS3YBxA2uVZjXd+1++2sR1BGczxZ9YKTnDTWUlI0xIHkXHeHv6nGxw2DKgi7qIvYyzKCCpWlSpDkn98Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c1e6e31d79391259b3e690de4f0c51c6aaf50a12753d316ab597062654b39909","last_reissued_at":"2026-05-18T00:32:50.316491Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:32:50.316491Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1707.09787","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:32:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RSubpHWeZsK7vpPN1attfevTYvWr2FQBqVIaqq17Fd0ohUOSERzw4Onb6CNzNAakcnyjIJGlsA5Goc8R8n6cDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T00:50:55.704997Z"},"content_sha256":"b7058a9a3d4eb8033863f9a9457a4070b0b864ad5cdfb6b776dc20428e4b04a2","schema_version":"1.0","event_id":"sha256:b7058a9a3d4eb8033863f9a9457a4070b0b864ad5cdfb6b776dc20428e4b04a2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:YHTOGHLZHEJFTM7GSDPE6DCRY2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Multi-frequency analysis of possible Dark Matter Contributions to M31 Gamma-Ray Emissions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Geoff Beck, Sergio Colafrancesco","submitted_at":"2017-07-31T09:56:34Z","abstract_excerpt":"We examine the possibility of a dark matter (DM) contribution to the recently observed gamma-ray spectrum seen in the M31 galaxy. In particular, we apply limits on Weakly Interacting Massive Particle DM annihilation cross-sections derived from the Coma galaxy cluster and the Reticulum II dwarf galaxy to determine the maximal flux contribution by DM annihilation to both the M31 gamma-ray spectrum and that of the Milky-Way galactic centre. We limit the energy range between 1 and 12 GeV in M31 and galactic centre spectra due to the limited range of former's data, as well as to encompass the high-"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.09787","kind":"arxiv","version":4},"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":"2026-05-18T00:32:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IhDej2vlWEz+wPltP8kMx9R+K9D1LlAhzHjl/5jTzZwVN2PlYW+p2R7o19cehRMmPRLCXXy+64WkJUp2NwN4DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T00:50:55.705708Z"},"content_sha256":"449580102e15ff9a2ce3ed1fdfe43142c8a1c11154ea2c1f58b13447fbd3a4f1","schema_version":"1.0","event_id":"sha256:449580102e15ff9a2ce3ed1fdfe43142c8a1c11154ea2c1f58b13447fbd3a4f1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YHTOGHLZHEJFTM7GSDPE6DCRY2/bundle.json","state_url":"https://pith.science/pith/YHTOGHLZHEJFTM7GSDPE6DCRY2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YHTOGHLZHEJFTM7GSDPE6DCRY2/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":"2026-05-26T00:50:55Z","links":{"resolver":"https://pith.science/pith/YHTOGHLZHEJFTM7GSDPE6DCRY2","bundle":"https://pith.science/pith/YHTOGHLZHEJFTM7GSDPE6DCRY2/bundle.json","state":"https://pith.science/pith/YHTOGHLZHEJFTM7GSDPE6DCRY2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YHTOGHLZHEJFTM7GSDPE6DCRY2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:YHTOGHLZHEJFTM7GSDPE6DCRY2","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":"a7a97b283603f06450af2d50c433e6b43eaacb479d76c146a2b6095c31a5fd79","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-07-31T09:56:34Z","title_canon_sha256":"0e3ac9a5211758ddba0f805a90e3a5c53694d47bd58af510eee771392b0471d2"},"schema_version":"1.0","source":{"id":"1707.09787","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.09787","created_at":"2026-05-18T00:32:50Z"},{"alias_kind":"arxiv_version","alias_value":"1707.09787v4","created_at":"2026-05-18T00:32:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.09787","created_at":"2026-05-18T00:32:50Z"},{"alias_kind":"pith_short_12","alias_value":"YHTOGHLZHEJF","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_16","alias_value":"YHTOGHLZHEJFTM7G","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_8","alias_value":"YHTOGHLZ","created_at":"2026-05-18T12:31:56Z"}],"graph_snapshots":[{"event_id":"sha256:449580102e15ff9a2ce3ed1fdfe43142c8a1c11154ea2c1f58b13447fbd3a4f1","target":"graph","created_at":"2026-05-18T00:32:50Z","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":"We examine the possibility of a dark matter (DM) contribution to the recently observed gamma-ray spectrum seen in the M31 galaxy. In particular, we apply limits on Weakly Interacting Massive Particle DM annihilation cross-sections derived from the Coma galaxy cluster and the Reticulum II dwarf galaxy to determine the maximal flux contribution by DM annihilation to both the M31 gamma-ray spectrum and that of the Milky-Way galactic centre. We limit the energy range between 1 and 12 GeV in M31 and galactic centre spectra due to the limited range of former's data, as well as to encompass the high-","authors_text":"Geoff Beck, Sergio Colafrancesco","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-07-31T09:56:34Z","title":"A Multi-frequency analysis of possible Dark Matter Contributions to M31 Gamma-Ray Emissions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.09787","kind":"arxiv","version":4},"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:b7058a9a3d4eb8033863f9a9457a4070b0b864ad5cdfb6b776dc20428e4b04a2","target":"record","created_at":"2026-05-18T00:32:50Z","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":"a7a97b283603f06450af2d50c433e6b43eaacb479d76c146a2b6095c31a5fd79","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-07-31T09:56:34Z","title_canon_sha256":"0e3ac9a5211758ddba0f805a90e3a5c53694d47bd58af510eee771392b0471d2"},"schema_version":"1.0","source":{"id":"1707.09787","kind":"arxiv","version":4}},"canonical_sha256":"c1e6e31d79391259b3e690de4f0c51c6aaf50a12753d316ab597062654b39909","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c1e6e31d79391259b3e690de4f0c51c6aaf50a12753d316ab597062654b39909","first_computed_at":"2026-05-18T00:32:50.316491Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:32:50.316491Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sHK9dRS3YBxA2uVZjXd+1++2sR1BGczxZ9YKTnDTWUlI0xIHkXHeHv6nGxw2DKgi7qIvYyzKCCpWlSpDkn98Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T00:32:50.317103Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.09787","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b7058a9a3d4eb8033863f9a9457a4070b0b864ad5cdfb6b776dc20428e4b04a2","sha256:449580102e15ff9a2ce3ed1fdfe43142c8a1c11154ea2c1f58b13447fbd3a4f1"],"state_sha256":"e8f5de26721f54ccee450e932d6d4bc876821e1d2bcc7d57d197e2d4584a4a68"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h/tJNm4XNTVziIxZmzxd7QYmP2gH2YWeijdvajbBAlKlmHMEULKTRGbrRly1zw3U5MJKVZf/L7CEElSCiCXnCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T00:50:55.709387Z","bundle_sha256":"82fe0cc0fcf6d282c232a25da19919d52c82a56fd0abe79a4ba8e8433a63d75f"}}