299 citations · 823 across the 34 of their papers we have counts for
10 papers · 1 filter
Post-Newtonian Global Conservation Laws in the Presence of Sensitive Bodies
Timothy Clifton, Asta Heinesen, Oliver Pitt
The parameterized post-Newtonian (PPN) approach is the state of the art formalism for performing theory independent tests of weak-field gravity, and for constraining possible devia…
Observational Quantities in Quasi-Newtonian Descriptions of Cosmological Space-Times
Asta Heinesen, Davide Fontana, Timothy Clifton
We investigate measures of distance and redshift in cosmological space-times that admit a shear-free foliation, which we henceforth refer to as `quasi-Newtonian'. Space expands iso…
Differential age observations and their constraining power in cosmology
Asta Heinesen
We derive the differential age signal valid for cosmic chronometers (passively evolving galaxies) in any space-time that satisfies the following assumptions: (i) The space-time has…
Splitting the spacetime: A systematic analysis of foliation dependence in cosmic averaging
Pierre Mourier, Asta Heinesen
It is a fundamental unsolved question in general relativity how to unambiguously characterize the effective collective dynamics of an ensemble of fluid elements sourcing the local…
Reconciling a decelerating Universe with cosmological observations
Asta Heinesen
Can modern cosmological observations be reconciled with a general-relativistic Universe without an anti-gravitating energy source? Usually, the answer to this question by cosmologi…
The averaging problem on the past null cone in inhomogeneous dust cosmologies
Thomas Buchert, Henk van Elst, Asta Heinesen
Cosmological models typically neglect the complicated nature of the spacetime manifold at small scales in order to hypothesize idealized general relativistic solutions for describi…
Redshift drift as a model independent probe of dark energy
Asta Heinesen
It is well known that positive values of redshift drift is a signature of dark energy within the conventionally studied Friedmann-Lema\^ıtre-Robertson-Walker (FLRW) universe models…
Multipole decomposition of redshift drift -- model independent mapping of the expansion history of the Universe
Asta Heinesen
We consider redshift drift in a general space-time as expressed in terms of physically interpretable multipole series. An important realisation from the derived results is that red…
Solving the curvature and Hubble parameter inconsistencies through structure formation-induced curvature
Asta Heinesen, Thomas Buchert
Recently it has been noted by Di Valentino, Melchiorri and Silk (2019) that the enhanced lensing signal relative to that expected in the spatially flat CDM model poses a possibl…
On the covariance of scalar averaging and backreaction in relativistic inhomogeneous cosmology
Asta Heinesen, Pierre Mourier, Thomas Buchert
We introduce a generalization of the 4-dimensional averaging window function of Gasperini, Marozzi and Veneziano (2010) that may prove useful for a number of applications. The cova…