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The radio-emitting CSM requires high mass-loading rates, M_dot ~10^{-4}--10^{-3} M_sun yr^{-1}, but modest total CSM masses, M_CSM ~10^{-4}--10^{-2} M_sun.","weakest_assumption":"The circumstellar material follows a broken power-law density profile whose break radius and indices are chosen to match the observed radio light-curve shapes, with radio emission arising solely from forward-shock synchrotron radiation subject only to synchrotron self-absorption and external free-free absorption (abstract, paragraphs describing the model framework)."}},"verdict_id":"51fe41f2-b100-446c-a526-eafc34448982"}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:a0c8676c390070bf97ee88e42eee63f6aa999fc0c1ea3ce7caf1c46e836a8d53","target":"record","created_at":"2026-05-20T00:03:49Z","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":"1306eaee9e9b386153d568999d60efbe5dc7abef6734ea8fc5ec5e09288d0192","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-05-17T06:25:44Z","title_canon_sha256":"ff01e83d344ac3035723b8c0134ee790d38b12f73b2cdfa8e5ae094e99cd1d2f"},"schema_version":"1.0","source":{"id":"2605.17280","kind":"arxiv","version":1}},"canonical_sha256":"874c11d0725655bf1acdd1a5d1523901f29c750b4674d9ba2de47210ff844103","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"874c11d0725655bf1acdd1a5d1523901f29c750b4674d9ba2de47210ff844103","first_computed_at":"2026-05-20T00:03:49.517012Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-20T00:03:49.517012Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NrNLtE8Vui53Q77q7pQ00h1GLJyz9kVZA6+nsrJw2CA0vMlFiI3AjQndu32fCyMB+bq33xc6Pc6x/MUAnWzBAg==","signature_status":"signed_v1","signed_at":"2026-05-20T00:03:49.517842Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.17280","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a0c8676c390070bf97ee88e42eee63f6aa999fc0c1ea3ce7caf1c46e836a8d53","sha256:31a065dd2d10bda5cfd0fc9ce72c94a5ae841e921d3b7756c74eb308c9ac9de9"],"state_sha256":"745b0f71c248839c2c2e6d8f82a02c14c2e4c976276731d4d48a084ce6387311"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YsyZpyJcBj31MlEragELP6f5t11uQDgu6yBFStaXVB7ClfsX63uSZz74bpFxg9pmK9zyV+LNXbP2viovW/OIBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T15:09:26.071428Z","bundle_sha256":"d486b5dcd55fbb621c57eb2fa4d532ae0c6d5f78ed59b94c156e2191cd5df01b"}}