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Here we assess implications of the large DM and scattering observed from FRB 20190520B for the host galaxy's plasma properties. A sample of 75 bursts detected with the Five-hundred-meter Aperture Spherical radio Telescope shows scattering on two scales: a mean temporal delay $\\tau(1.41\\ {\\rm GHz})=10.9\\pm1.5$ ms, which is attributed to the host galaxy, and a mean scintillation bandwidth $\\nu_{\\rm d}(1.41\\ {\\rm GHz})=0.21\\pm0.01$ MHz, which is"},"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":"2202.13458","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-02-27T21:31:43Z","cross_cats_sorted":[],"title_canon_sha256":"5e4dc9e9870b3c666406704891ac17114f25091f6a77f2032d637f8e1f8fbaf9","abstract_canon_sha256":"e80bc2e454a13e26f2c12293aa09048afd42befa5095c7621a821db0c5cf6223"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:30:07.632897Z","signature_b64":"b03PhsTs/5uwmMZuiwOrB44D+Bhj0p60zl6YDvMA4Jm9hr/jsSdAkkeRCHJNns0Usw2zsjmqOGa6Mvx40dQLBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5cf52da49530889c85712b41dff0c4a2945cd5d4e41f3cc0f122bfad290885f1","last_reissued_at":"2026-07-05T04:30:07.632453Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:30:07.632453Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Large Dispersion and Scattering of FRB 20190520B are Dominated by the Host Galaxy","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"C.-H. Niu, C.J. Law, C.-W. Tsai, D. Li, J.M. Cordes, J.-M. Yao, J.W. McKee, M. Cruces, R. Anna-Thomas, S. Chatterjee, S.K. Ocker","submitted_at":"2022-02-27T21:31:43Z","abstract_excerpt":"The repeating FRB 20190520B is localized to a galaxy at $z=0.241$, much closer than expected given its dispersion measure $\\rm DM=1205\\pm4\\ pc\\ cm^{-3}$. Here we assess implications of the large DM and scattering observed from FRB 20190520B for the host galaxy's plasma properties. 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