{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:6LMWVOXNGOUI7E4WMQVWNQSJBO","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":"fe973b6689c803640b4f4e611ca6220b7f24bfe54dd35912b602c9df766b11cd","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-04-06T20:34:36Z","title_canon_sha256":"c71d4336fb333e99f6da984345bc5233949d7bbea879b5568a470bb1932eda77"},"schema_version":"1.0","source":{"id":"1504.01410","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.01410","created_at":"2026-05-18T01:36:33Z"},{"alias_kind":"arxiv_version","alias_value":"1504.01410v2","created_at":"2026-05-18T01:36:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.01410","created_at":"2026-05-18T01:36:33Z"},{"alias_kind":"pith_short_12","alias_value":"6LMWVOXNGOUI","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"6LMWVOXNGOUI7E4W","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"6LMWVOXN","created_at":"2026-05-18T12:29:07Z"}],"graph_snapshots":[{"event_id":"sha256:6fca7af10964580558d65ac890c9d050b2e58c9ac6388f62d59a0693236a07f2","target":"graph","created_at":"2026-05-18T01:36:33Z","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":"Cosmic strings are expected to form loops. These can act as seeds for accretion of dark matter, leading to the formation of ultracompact minihalos (UCMHs). We perform a detailed study of the accretion of dark matter onto cosmic string loops and compute the resulting mass distribution of UCMHs. We then apply observational limits on the present-day abundance of UCMHs to derive corresponding limits on the cosmic string tension $G\\mu$. The bounds are strongly dependent upon the assumed distribution of loop velocities and their impacts on UCMH formation. Under the assumption that a loop can move up","authors_text":"Madeleine Anthonisen, Pat Scott, Robert Brandenberger","cross_cats":["gr-qc","hep-ph","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-04-06T20:34:36Z","title":"Constraints on cosmic strings from ultracompact minihalos"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.01410","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":"sha256:9dfdf3b8fbbec0b7601db86e718434982d7f8dcc3f5dd1238307fa0528c5f3ea","target":"record","created_at":"2026-05-18T01:36:33Z","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":"fe973b6689c803640b4f4e611ca6220b7f24bfe54dd35912b602c9df766b11cd","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-04-06T20:34:36Z","title_canon_sha256":"c71d4336fb333e99f6da984345bc5233949d7bbea879b5568a470bb1932eda77"},"schema_version":"1.0","source":{"id":"1504.01410","kind":"arxiv","version":2}},"canonical_sha256":"f2d96abaed33a88f9396642b66c2490b908d607580642224786e3ac13807086b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f2d96abaed33a88f9396642b66c2490b908d607580642224786e3ac13807086b","first_computed_at":"2026-05-18T01:36:33.576789Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:36:33.576789Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bJld9LwBmDKk+ufuanYldS1B6EWOB+qe/FJoMOrdzd5UiBldNFEU43EwVmyeuZ9HytVIfD4XTRP3k9+I37dGAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:36:33.577405Z","signed_message":"canonical_sha256_bytes"},"source_id":"1504.01410","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9dfdf3b8fbbec0b7601db86e718434982d7f8dcc3f5dd1238307fa0528c5f3ea","sha256:6fca7af10964580558d65ac890c9d050b2e58c9ac6388f62d59a0693236a07f2"],"state_sha256":"6474124e5052c8a3a6d8715ed94494b337004bc5a279ff8b11b02335f1d8c97e"}