PEACC is a drone-deployed dual-source Gaussian noise emitter synchronized by GPS clocks that enables coherent calibration for 21 cm intensity mapping arrays, with tests showing the correlated channel outperforming auto-correlation across SNR regimes.
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Canadian Long Range Plan for Astronomy and Astrophysics White Papers , year = 2019, volume =
12 Pith papers cite this work. Polarity classification is still indexing.
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Stacking 3455 CHIME/FRB sightlines on 1288 SDSS voids shows a 3.2 sigma DM deficit toward centers, implying 60 percent baryon underdensity consistent with galaxy underdensity and hydrodynamical simulations.
3D kinetic simulations of pre-merger binary neutron star magnetospheres predict nonthermal gamma-ray signals at ~16 MeV and fast radio burst-like radio transients from reconnecting current sheets.
New method maps 21cm cosmological structures to ~100m reflection scales for HERA-like and EDGES-like instruments, showing near-field beam calibration is required.
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.
CHIME/FRB has now cataloged 80 repeating FRB sources whose burst rates and upper limits are consistent with a power-law distribution implying 50-100% of all FRBs repeat.
Forecasts indicate 10-sigma detection for squeezed triangles and 100-sigma for combined shapes in the 21cm-galaxy cross-bispectrum with 100 hours of SKA-Mid interferometric observations on scales 0.2 to 0.9 per Mpc.
Six new Galactic radio transients found and classified into two types, proposed to originate from wide-orbit white dwarf binaries.
The primary beam of the Tianlai array is shown to be factorizable into independent E-W and N-S components, with E-W profiles measured from the Sun and N-S obtained via sky model fitting.
Matching FRB QPOs to crustal modes constrains the neutron star mass to 1.00-1.76 solar masses, radius to ~13 km, and nuclear symmetry energy slope L to 59.5-96.8 MeV.
citing papers explorer
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PEACC -- Precision Emitter for 21 cm Array Coherent Calibration
PEACC is a drone-deployed dual-source Gaussian noise emitter synchronized by GPS clocks that enables coherent calibration for 21 cm intensity mapping arrays, with tests showing the correlated channel outperforming auto-correlation across SNR regimes.
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Baryons in the Darkest Sites of the Universe
Stacking 3455 CHIME/FRB sightlines on 1288 SDSS voids shows a 3.2 sigma DM deficit toward centers, implying 60 percent baryon underdensity consistent with galaxy underdensity and hydrodynamical simulations.
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Electromagnetic Precursors to Binary Neutron Star Mergers: Kinetic Simulations of Magnetospheric Flaring
3D kinetic simulations of pre-merger binary neutron star magnetospheres predict nonthermal gamma-ray signals at ~16 MeV and fast radio burst-like radio transients from reconnecting current sheets.
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Mapping Cosmological Signal Scales to Beam Calibration Requirements in 21cm Experiments and Implications for Near-Field Measurement
New method maps 21cm cosmological structures to ~100m reflection scales for HERA-like and EDGES-like instruments, showing near-field beam calibration is required.
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Backlighting the Cosmic Web with Fast Radio Bursts: An Anthology of Dispersion Measure Cross-Correlations with Large-Scale Structure and Baryon Tracers
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.
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Signatures of Suppressed Matter Clustering revealed by Fast Radio Bursts
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.
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Great Walls of Cosmic Baryons in the Northern Sky
FRB dispersion measures reveal a large-scale excess of ionized gas in the northern sky spatially aligned with the Ursa Major supercluster.
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Discovery of 30 Repeating Fast Radio Burst Sources and Uniform Population Statistics of 80 Repeating Sources from CHIME/FRB
CHIME/FRB has now cataloged 80 repeating FRB sources whose burst rates and upper limits are consistent with a power-law distribution implying 50-100% of all FRBs repeat.
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Probing the large-scale structure with 21cm-galaxy cross-bispectrum: Estimates from simulations and forecasts for upcoming cosmological surveys
Forecasts indicate 10-sigma detection for squeezed triangles and 100-sigma for combined shapes in the 21cm-galaxy cross-bispectrum with 100 hours of SKA-Mid interferometric observations on scales 0.2 to 0.9 per Mpc.
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A sample of short-lived Galactic radio transients from ASKAP VAST
Six new Galactic radio transients found and classified into two types, proposed to originate from wide-orbit white dwarf binaries.
-
Measuring Tianlai's primary beam using sky model
The primary beam of the Tianlai array is shown to be factorizable into independent E-W and N-S components, with E-W profiles measured from the Sun and N-S obtained via sky model fitting.
-
Estimation of neutron star mass and radius of FRB 20240114A by identification of crustal oscillations
Matching FRB QPOs to crustal modes constrains the neutron star mass to 1.00-1.76 solar masses, radius to ~13 km, and nuclear symmetry energy slope L to 59.5-96.8 MeV.