{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"9903d6f0daaf2544aa8ee1976fafb98fea49427b60860fc61d988018ec0ef9dd","created":"2026-10-03T07:18:02Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"c6ec49ef5cd4dcee7f98c458eb12b0e600a2d0623a0ff4f39e4a2f8767d14492","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"identification","assisted_by":[],"external_id":"cosmo.cmb-anomalies.matter-dipole","kind":"phenomenon","literature_status":"contested","n":"1","parents":[],"plain":"Because the Earth moves relative to the cosmic microwave background, distant galaxies should look slightly more numerous in the direction of motion. Several catalogs show about twice the expected effect.","posed_since":"1984","precise":"The CMB dipole implies a velocity of about $3.7e7\\,\\mathrm{cm/s}$, which predicts a kinematic number-count dipole (Ellis-Baldwin test) for distant sources. CatWISE2020 quasars and NVSS radio galaxies give amplitudes about twice the prediction, reported at about $5\\sigma$ in joint analyses. Determine whether this signals a non-kinematic, intrinsic anisotropy incompatible with FLRW cosmology, or catalog systematics and clustering contributions.","problem_ref":null,"references":"","settled_by":"Number-count dipoles from independent deep surveys (Euclid, Rubin, SKA) with characterized selection functions, consistent or inconsistent with the kinematic value.","status_note":"2025 to 2026 reanalyses including clustering and higher multipoles disagree on the significance.","title":"Why is the distant-source count dipole larger than our motion predicts?","topic_ref":"803af421679c0e0814e18e65c97707fa962470e07595871c548569ba9a62aa1d"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"ff76c7bd6b2a5bac70e8ef4379ed718555e1ade8976756957638853fdf795be0","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"f3a172b1b2732010aa4618a394ad3062b6089bcb3e3b1c55994c30c27435e3f1","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"Yi5fKOEFTYsJm5Z4F7mPErvEU4P_CPoPdfNLv94EiE5QeKvSsNCokdDyMH7S9EtoD-WP4nZMpYIEcq_31Q5yCA"},"schema":"pubphys.envelope/1"},"record_hash":"ff76c7bd6b2a5bac70e8ef4379ed718555e1ade8976756957638853fdf795be0","leaf_index":1226}