Reconciling M/L Ratios Across Cosmic Time: a Concordance IMF for Massive Galaxies
P van Dokkum, C Conroy - The Astrophysical Journal Letters, 2024 - iopscience.iop.org
The stellar initial mass function (IMF) is thought to be bottom heavy in the cores of the most
massive galaxies, with an excess of low-mass stars compared to the Milky Way. However …
massive galaxies, with an excess of low-mass stars compared to the Milky Way. However …
The Galaxy–Galaxy Strong Lensing Cross Section and the Internal Distribution of Matter in ΛCDM Substructure
Strong gravitational lensing offers a powerful probe of the detailed distribution of matter in
lenses, while magnifying and bringing faint background sources into view. Observed strong …
lenses, while magnifying and bringing faint background sources into view. Observed strong …
J1721+ 8842: The first Einstein zig-zag lens
We report the discovery of the first example of an Einstein zig-zag lens, an extremely rare
lensing configuration. In this system, J1721+ 8842, six images of the same background …
lensing configuration. In this system, J1721+ 8842, six images of the same background …
The MAGPI survey: evidence against the bulge–halo conspiracy
C Derkenne, RM McDermid, G Santucci… - Monthly Notices of …, 2024 - academic.oup.com
Studies of the internal mass structure of galaxies have observed a 'conspiracy'between the
dark matter and stellar components, with total (stars dark) density profiles showing …
dark matter and stellar components, with total (stars dark) density profiles showing …
[HTML][HTML] A Survey of Dynamical and Gravitational Lensing Tests in Scale Invariance: The Fall of Dark Matter?
A Maeder, F Courbin - Symmetry, 2024 - mdpi.com
We first briefly review the adventure of scale invariance in physics, from Galileo Galilei,
Weyl, Einstein, and Feynman to the revival by Dirac (1973) and Canuto et al.(1977). In the …
Weyl, Einstein, and Feynman to the revival by Dirac (1973) and Canuto et al.(1977). In the …
Galaxy Mass Modelling from Multi-Wavelength JWST Strong Lens Analysis: Dark Matter Substructure, Angular Mass Complexity, or Both?
SC Lange, A Amvrosiadis, JW Nightingale… - arxiv preprint arxiv …, 2024 - arxiv.org
We analyze two galaxy-scale strong gravitational lenses, SPT0418-47 and SPT2147-50,
using JWST NIRCam imaging across multiple filters. To account for angular complexity in …
using JWST NIRCam imaging across multiple filters. To account for angular complexity in …
[HTML][HTML] Gravitomagnetism and Gravitational Lens
S Le Corre - Open Access Library Journal, 2024 - scirp.org
In [1], we presented a solution to explain dark matter (DM) in the framework of linearized
general relativity (GRL) without exotic matter. GRL adds a second component to the …
general relativity (GRL) without exotic matter. GRL adds a second component to the …