MOND strong-lensing masses in the Bullet Cluster’s three BCG cores lie between lower and upper IGIMF baryonic mass estimates from JWST photometry.
A general class of gravitational theories as alternatives to dark matter where the speed of gravity always equals the speed of light
2 Pith papers cite this work, alongside 64 external citations. Polarity classification is still indexing.
2
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external citations · Pith
abstract
A number of theories of gravity have been proposed as proxies for dark matter in the regime of galaxies and cosmology. The recent observations of gravitational waves (GW170817) from the merger of two neutron stars, followed by an electromagnetic counterpart (GW170817a) have placed stringent constraints on the difference of the speed of gravity to the speed of light, severely restricting the phenomenological viability of such theories. We revisit the impact of these observations on the Tensor-Vector-Scalar (TeVeS) paradigm of relativistic Modified Newtonian Dynamics (MOND) and demonstrate the existence of a previously unknown class of this paradigm where the speed of gravity always equals the speed of light. We show that this holds without altering the usual (bimetric) MOND phenomenology in galaxies.
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astro-ph.GA 2years
2026 2verdicts
CONDITIONAL 2representative citing papers
Vortex reconnections in BEC/superfluid dark-matter cores can transfer at most 0.06–4.5% of the virial energy in 10 Gyr under fiducial assumptions, so they cannot appreciably restructure the core.
citing papers explorer
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Baryonic mass budgets in the central regions of the Bullet Cluster and their consistency with strong lensing in MOND
MOND strong-lensing masses in the Bullet Cluster’s three BCG cores lie between lower and upper IGIMF baryonic mass estimates from JWST photometry.
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Vortex-reconnection energy bounds in Bose-Einstein-condensed and superfluid dark matter halos
Vortex reconnections in BEC/superfluid dark-matter cores can transfer at most 0.06–4.5% of the virial energy in 10 Gyr under fiducial assumptions, so they cannot appreciably restructure the core.