77 citations · 179 across the 11 of their papers we have counts for
11 papers
Lensing the darkness: The matter density profile in cosmic voids from UNIONS
Hunter L. Martin, Michael J. Hudson, Alex Woodfinden +14
We measure the distribution of matter contained within the emptiest regions of the Universe: cosmic voids. We use the large overlap between the Ultraviolet Near-Infrared Optical No…
Alcock-Paczyński effect on void-finding: Implications for void-galaxy cross-correlation modelling
Slađana Radinović, Hans A. Winther, Seshadri Nadathur +5
Under the assumption of statistical isotropy, and in the absence of directional selection effects, a stack of voids is expected to be spherically symmetric, which makes it an excel…
A new method to determine from cosmological energy-density measurements
Alex Krolewski, Will J. Percival, Alex Woodfinden
We introduce a new method for measuring the Hubble parameter from low-redshift large-scale observations that is independent of the comoving sound horizon. The method uses the baryo…
Cosmological measurements from void-galaxy and galaxy-galaxy clustering in the Sloan Digital Sky Survey
Alex Woodfinden, Will J. Percival, Seshadri Nadathur +5
We present the cosmological implications of measurements of void-galaxy and galaxy-galaxy clustering from the Sloan Digital Sky Survey (SDSS) Main Galaxy Sample (MGS), Baryon Oscil…
Euclid: Cosmology forecasts from the void-galaxy cross-correlation function with reconstruction
S. Radinović, S. Nadathur, H. -A. Winther +118
We investigate the cosmological constraints that can be expected from measurement of the cross-correlation of galaxies with cosmic voids identified in the Euclid spectroscopic surv…
Velocity profiles of matter and biased tracers around voids
Elena Massara, Will J. Percival, Neal Dalal +4
The velocity profile of galaxies around voids is a key ingredient for redshift space distortion (RSD) measurements made using the void-galaxy correlation function. In this paper we…
Measurements of cosmic expansion and growth rate of structure from voids in the Sloan Digital Sky Survey between redshift 0.07 and 1.0
Alex Woodfinden, Seshadri Nadathur, Will J. Percival +3
We present measurements of the anisotropic cross-correlation of galaxies and cosmic voids in data from the Sloan Digital Sky Survey Main Galaxy Sample (MGS), Baryon Oscillation Spe…
Helicity in the Large-Scale Galactic Magnetic Field
J. L. West, R. N. Henriksen, K. Ferrière +4
We search for observational signatures of magnetic helicity in data from all-sky radio polarization surveys of the Milky Way Galaxy. Such a detection would help confirm the dynamo…
The completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: geometry and growth from the anisotropic void-galaxy correlation function in the luminous red galaxy sample
Seshadri Nadathur, Alex Woodfinden, Will J. Percival +12
We present an analysis of the anisotropic redshift-space void-galaxy correlation in configuration space using the Sloan Digital Sky Survey extended Baryon Oscillation Spectroscopic…
Evolving Galactic Dynamos and Fits to the Reversing Rotation Measures in the Halo of NGC 4631
Alex Woodfinden, Richard Henriksen, Judith Irwin +1
Rotation measure (RM) synthesis maps of NGC 4631 show remarkable sign reversals with distance from the minor axis in the northern halo of the galaxy on kpc scales. To explain this…
Exact spirally symmetric galactic dynamos
R. N. Henriksen, A. Woodfinden, J. A. Irwin
This paper extends the results of an earlier paper on scale invariant galactic spiral magnetic modes to time dependent, scale invariant, spirals. The examples given are all exact i…