A differential DM method using same-sky localized FRBs removes Milky Way contributions without Galactic models and produces a different constraint on Γ ≡ Ω_b H_0 f_d from current data compared to conventional approaches.
M., Connor, L., Semenov, V
7 Pith papers cite this work. Polarity classification is still indexing.
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FRB DMs correlate at 2.6-5 sigma with galaxies, weak lensing, CIB, CMB lensing, tSZ, X-ray clusters, SXRB and radio continuum, consistent with moderate feedback models while ruling out weak feedback at 3.5 sigma via SXRB-DM.
FRB dispersion measures directly constrain suppression of the matter power spectrum due to feedback at k ~ 0.1-3 h/Mpc, reduce posterior variance by a factor of ~8 at k~1 h/Mpc, and exclude extreme large-scale feedback scenarios at ~2 sigma.
FRB dispersion measures reveal a large-scale excess of ionized gas in the northern sky spatially aligned with the Ursa Major supercluster.
Fast radio burst dispersion measures exhibit scaling consistent with two-dimensional Kolmogorov turbulence in the intergalactic medium, constraining the outer scale to several megaparsecs.
CASM-256 is a new 256-antenna radio array at Owens Valley that uses real-time digital beamforming to search for fast radio bursts and galactic transients over a huge sky area.
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The 256-antenna Coherent All-Sky Monitor
CASM-256 is a new 256-antenna radio array at Owens Valley that uses real-time digital beamforming to search for fast radio bursts and galactic transients over a huge sky area.