Search Results - "Desmond, Harry"
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Testing Screened Modified Gravity
Published in Universe (Basel) (01-01-2022)“…Long range scalar fields with a coupling to matter appear to violate known bounds on gravitation in the solar system and the laboratory. This is evaded thanks…”
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2
Marginalised Normal Regression: Unbiased curve fitting in the presence of x-errors
Published in The Astrophysical journal (2023)“…The history of the seemingly simple problem of straight line fitting in the presence of both $x$ and $y$ errors has been fraught with misadventure, with…”
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A statistical investigation of the mass discrepancy–acceleration relation
Published in Monthly notices of the Royal Astronomical Society (01-02-2017)“…We use the mass discrepancy-acceleration relation (the correlation between the ratio of total-to-visible mass and acceleration in galaxies; MDAR) to test the…”
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The scatter, residual correlations and curvature of the sparc baryonic Tully–Fisher relation
Published in Monthly notices of the Royal Astronomical Society. Letters (21-11-2017)“…Abstract In recent work, Lelli et al. argue that the tightness of the baryonic Tully–Fisher relation (BTFR) of the sparc galaxy sample, and the weakness of the…”
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5
The underlying radial acceleration relation
Published in Monthly notices of the Royal Astronomical Society (10-10-2023)“…ABSTRACT The radial acceleration relation (RAR) of late-type galaxies relates their dynamical acceleration, gobs, to that sourced by baryons alone, gbar,…”
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No evidence for anisotropy in galaxy spin directions
Published in Monthly notices of the Royal Astronomical Society (03-10-2024)“…ABSTRACT Modern cosmology rests on the cosmological principle, that on large enough scales the Universe is both homogeneous and isotropic. A corollary is that…”
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On the fundamentality of the radial acceleration relation for late-type galaxy dynamics
Published in Monthly notices of the Royal Astronomical Society (11-09-2023)“…ABSTRACT Galaxies have been observed to exhibit a level of simplicity unexpected in the complex galaxy formation scenario posited by standard cosmology. This…”
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A statistical investigation of the mass discrepancy–acceleration relation
Published in Monthly notices of the Royal Astronomical Society (08-10-2016)“…We use the mass discrepancy–acceleration relation (the correlation between the ratio of total-to-visible mass and acceleration in galaxies; MDAR) to test the…”
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On the incompatibility of the Radial Acceleration Relation and Solar System quadrupole in modified gravity MOND
Published in Monthly notices of the Royal Astronomical Society (2024)“…Modified Newtonian Dynamics (MOND), postulating a breakdown of Newtonian mechanics at low accelerations, has considerable success at explaining galaxy…”
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10
Exhaustive Symbolic Regression
Published in IEEE transactions on evolutionary computation (01-08-2024)“…Symbolic regression (SR) algorithms attempt to learn analytic expressions which fit data accurately and in a highly interpretable manner. Conventional SR…”
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The baryonic Tully–Fisher relation for different velocity definitions and implications for galaxy angular momentum
Published in Monthly notices of the Royal Astronomical Society (11-04-2019)“…ABSTRACT We study the baryonic Tully–Fisher relation (BTFR) at z ≃ 0 using 153 galaxies from the Spitzer Photometry and Accurate Rotation Curve sample. We…”
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12
The Tully–Fisher and mass–size relations from halo abundance matching
Published in Monthly notices of the Royal Astronomical Society (21-11-2015)“…The Tully–Fisher relation (TFR) expresses the connection between rotating galaxies and the dark matter haloes they inhabit, and therefore contains a wealth of…”
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13
On the tension between the radial acceleration relation and Solar system quadrupole in modified gravity MOND
Published in Monthly notices of the Royal Astronomical Society (13-04-2024)“…ABSTRACT Modified Newtonian dynamics (MOND), postulating a breakdown of Newtonian mechanics at low accelerations, has considerable success at explaining galaxy…”
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14
Evaluating the variance of individual halo properties in constrained cosmological simulations
Published in Monthly notices of the Royal Astronomical Society (17-10-2024)“…ABSTRACT Constrained cosmological simulations play an important role in modelling the local Universe, enabling investigation of the dark matter content of…”
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The information on halo properties contained in spectroscopic observations of late-type galaxies
Published in Monthly notices of the Royal Astronomical Society (11-09-2023)“…ABSTRACT Rotation curves are the key observational manifestation of the dark matter distribution around late-type galaxies. In a halo model context, the…”
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Inferring dark matter halo properties for H i-selected galaxies
Published in Monthly notices of the Royal Astronomical Society (20-10-2023)“…ABSTRACT We set constraints on the dark matter halo mass and concentration of ∼22 000 individual galaxies visible both in $\rm{H}\, {\small I}$ (from the…”
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The scatter in the galaxy–halo connection: a machine learning analysis
Published in Monthly notices of the Royal Astronomical Society (28-06-2022)“…ABSTRACT We apply machine learning (ML), a powerful method for uncovering complex correlations in high-dimensional data, to the galaxy–halo connection of…”
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18
The Faber–Jackson relation and Fundamental Plane from halo abundance matching
Published in Monthly notices of the Royal Astronomical Society (11-02-2017)“…The Fundamental Plane (FP) describes the relation between the stellar mass, size, and velocity dispersion of elliptical galaxies; the Faber-Jackson relation…”
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Novel Probes Project: Tests of gravity on astrophysical scales
Published in Reviews of modern physics (10-02-2021)“…The Novel Probes Project, an initiative to advance the field of astrophysical tests of the dark sector by creating a forum that connects observers and…”
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The fifth force in the local cosmic web
Published in Monthly notices of the Royal Astronomical Society (11-02-2019)“…ABSTRACT Extensions of the standard models of particle physics and cosmology often lead to long-range fifth forces with properties dependent on gravitational…”
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