{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:3NNBIPQXIY53JWJ3KJBNN2PWJ7","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":"bfa0a144fe5c8ddff72ea25b78ec741015c04e0cfb6251326b0d8812dc5071f1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-03-06T17:10:37Z","title_canon_sha256":"a32281ad966d9a2fe44ef375e69a9ba212c531404ca125ea522d988b5f2c3b75"},"schema_version":"1.0","source":{"id":"1903.02496","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.02496","created_at":"2026-05-17T23:51:55Z"},{"alias_kind":"arxiv_version","alias_value":"1903.02496v1","created_at":"2026-05-17T23:51:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.02496","created_at":"2026-05-17T23:51:55Z"},{"alias_kind":"pith_short_12","alias_value":"3NNBIPQXIY53","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"3NNBIPQXIY53JWJ3","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"3NNBIPQX","created_at":"2026-05-18T12:33:07Z"}],"graph_snapshots":[{"event_id":"sha256:44efca8f3582aabd34bdc8428ebba791e4cf4f1aaccd80ac0e993ef5fc2034b0","target":"graph","created_at":"2026-05-17T23:51:55Z","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":"Binary systems formed by early-type stars with strong winds are known to display variable non-thermal radio emission, thermal X-rays, and, at least in one case (Eta Carina), $\\gamma$ rays. Some of these systems are quite eccentric and the conditions for efficient particle acceleration and $\\gamma$-ray production might manifest only occasionally. In this paper I briefly review the physics of colliding wind binaries with emphasis on the observational signatures of non-thermal particle acceleration. I discuss, in particular, the case of the system HD 93129A which is made up by an O2 If* star (the","authors_text":"Gustavo E. Romero","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-03-06T17:10:37Z","title":"Gamma Rays from colliding winds in massive binaries. Status and prospects"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.02496","kind":"arxiv","version":1},"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":"sha256:6faf0c54b494c6ca1bc7131e689ff5dbb2b534a8906223adcb151ec79a8cadd3","target":"record","created_at":"2026-05-17T23:51:55Z","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":"bfa0a144fe5c8ddff72ea25b78ec741015c04e0cfb6251326b0d8812dc5071f1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-03-06T17:10:37Z","title_canon_sha256":"a32281ad966d9a2fe44ef375e69a9ba212c531404ca125ea522d988b5f2c3b75"},"schema_version":"1.0","source":{"id":"1903.02496","kind":"arxiv","version":1}},"canonical_sha256":"db5a143e17463bb4d93b5242d6e9f64fce1a22d1846da453d263d441432f2cea","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"db5a143e17463bb4d93b5242d6e9f64fce1a22d1846da453d263d441432f2cea","first_computed_at":"2026-05-17T23:51:55.227512Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:51:55.227512Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XoVGyhCSPXAYouHj3yo67NmAcUg84PltWH6Xejl1nowehmRbyCbbV75mcVu5ApJQL3SEga4I4AIv51PlTYhVDQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:51:55.227968Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.02496","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6faf0c54b494c6ca1bc7131e689ff5dbb2b534a8906223adcb151ec79a8cadd3","sha256:44efca8f3582aabd34bdc8428ebba791e4cf4f1aaccd80ac0e993ef5fc2034b0"],"state_sha256":"dd36560784748f042661fabd3cac0d09d79673941a308fd551f8609e32330308"}