30 citations · 67 across the 11 of their papers we have counts for
12 papers
Physically-motivated priors in the local distance ladder significantly reduce the Hubble tension
Marcus Högås, Edvard Mörtsell
Determinations of the Hubble constant based on the local distance ladder remain in significant tension with early-Universe inferences from the cosmic microwave background. While th…
Constraining Fifth Forces using the Local Distance Ladder: Implications for the Hubble Tension
Marcus Högås, Edvard Mörtsell, Harry Desmond +1
We revisit the local distance ladder measurement of the Hubble constant in models where gravity is modified by a fifth force, an additional long-range interaction. In many such the…
Reassessing the Cepheid-based distance ladder: implications for the Hubble constant
Marcus Högås, Edvard Mörtsell
The Hubble constant () is a key parameter in cosmology, yet its precise value remains contentious due to discrepancies between early- and late-universe measurement methods, a…
2D BAO vs 3D BAO: solving the Hubble tension with an alternative cosmological model
Sowmaydeep Dwivedi, Marcus Högås
Ordinary 3D Baryon Acoustic Oscillations (BAO) data are model-dependent, requiring the assumption of a cosmological model to calculate comoving distances during data reduction. Thr…
The Hubble tension and fifth forces: a cosmic screenplay
Marcus Högås, Edvard Mörtsell
Fifth forces are ubiquitous in modified theories of gravity. In this paper, we analyze their effect on the Cepheid-calibrated cosmic distance ladder, specifically with respect to t…
Constraints on bimetric gravity from Big Bang nucleosynthesis
Marcus Högås, Edvard Mörtsell
Bimetric gravity is a ghost-free and observationally viable extension of general relativity, exhibiting both a massless and a massive graviton. The observed abundances of light ele…
Observational constraints on bimetric gravity
Marcus Högås, Edvard Mörtsell
Ghost-free bimetric gravity is a theory of two interacting spin-2 fields, one massless and one massive, in addition to the standard matter particles and fields, thereby generalizin…
Analytical constraints on bimetric gravity
Marcus Högås, Edvard Mörtsell
Ghost-free bimetric gravity is an extension of general relativity, featuring a massive spin-2 field coupled to gravity. We parameterize the theory with a set of observables having…
Generalized Vaidya solutions in bimetric gravity
Marcus Högås, Mikica Kocic, Francesco Torsello +1
In general relativity, the endpoint of spherically symmetric gravitational collapse is a Schwarzschild--[(A)dS] black hole. In bimetric gravity, it has been speculated that a stati…
Covariant BSSN formulation in bimetric relativity
Francesco Torsello, Mikica Kocic, Marcus Högås +1
Numerical integration of the field equations in bimetric relativity is necessary to obtain solutions describing realistic systems. Thus, it is crucial to recast the equations as a…
Spacetime symmetries and topology in bimetric relativity
Francesco Torsello, Mikica Kocic, Marcus Högås +1
We explore spacetime symmetries and topologies of the two metric sectors in Hassan-Rosen bimetric theory. We show that, in vacuum, the two sectors can either share or have separate…
Algebraic Properties of Einstein Solutions in Ghost-Free Bimetric Theory
Mikica Kocic, Marcus Högås, Francesco Torsello +1
A known fact is that an Einstein solution in one sector in ghost-free bimetric theory implies an Einstein solution in the other sector. Earlier studies have also shown that some cl…