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We apply a method developed recently by us (Li et al. 2019) to these five localized FRBs to give a cosmology-insensitive estimate of the fraction of baryon mass in the IGM, $f_{\\rm IGM}$. Using the measured dispersion measure (DM) and luminosity distance $d_{\\rm L}$ data (inferred from the FRB redshifts and $d_{\\rm L}$ of type Ia supernovae at the same redshifts) of the five FRBs, we const"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2004.08393","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-04-17T18:00:00Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"6cc80a76c6209526d59216b432c58125dadaed1424f50b480c65e1ffa5a5bf1a","abstract_canon_sha256":"97cd974ff42a338ef01eb99241947bf11ed98c716260d43cabc9a9a9774a7569"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:05:47.669210Z","signature_b64":"yalZJUagr/kV1Opriql+CcwDHRBA8Ni+3KxqOfjluUeyeYdV8t0LH3pvd+xZUJEdmuK6WdQmhtS0ECITcnmbCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c910a20b82049a30748aa50d65f4ac1f312a7029d42f684d3ff25dede75e97bd","last_reissued_at":"2026-07-05T01:05:47.668737Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:05:47.668737Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Cosmology-insensitive estimate of IGM baryon mass fraction from five localized fast radio bursts","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"Bing Zhang, He Gao, Jun-Jie Wei, Yuan-Pei Yang, Zhengxiang Li, Zong-Hong Zhu","submitted_at":"2020-04-17T18:00:00Z","abstract_excerpt":"Five fast radio bursts (FRBs), including three apparently non-repeating ones FRB 180924, FRB 181112, and FRB 190523, and two repeaters, FRB 121102 and FRB 180916.J0158+65, have already been localized so far. 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