540 citations · 2.1k across the 23 of their papers we have counts for
23 papers
Limits of self-interacting neutrinos from the BAO and CMB phase shift
Abbé M. Whitford, Cullan Howlett, Tamara M. Davis +2
Neutrinos with Standard Model interactions free-stream in the early Universe, leaving a distinct phase shift in the pattern of baryon acoustic oscillations (BAO). When isolated, th…
DESIgning concordant distances in the age of precision cosmology: the impact of density fluctuations
David Camarena, Kylar Greene, John Houghteling +1
Discrepancies between distance measurements and CDM predictions reveal notable features in the distance-redshift relation, possibly suggesting the presence of an evolving dark e…
Strong constraints on a simple self-interacting neutrino cosmology
David Camarena, Francis-Yan Cyr-Racine
Some cosmic microwave background (CMB) data allow a cosmological scenario in which the free streaming of neutrinos is delayed until close to matter-radiation equality. Interestingl…
Constraining LLTB models with galaxy cluster counts from next generation surveys
Ziad Sakr, Ana Carvalho, Antonio Da Silva +7
The Universe's assumed homogeneity and isotropy is known as the cosmological principle. It is one of the assumptions that lead to the Friedmann-Lema\^ıtre-Robertson-Walker (FLRW) m…
The two-mode puzzle: Confronting self-interacting neutrinos with the full shape of the galaxy power spectrum
David Camarena, Francis-Yan Cyr-Racine, John Houghteling
A cosmological scenario in which the onset of neutrino free streaming in the early Universe is delayed until close to the epoch of matter-radiation equality has been shown to provi…
The tension in the absolute magnitude of Type Ia supernovae
David Camarena, Valerio Marra
This study aims to elucidate the tension in the Hubble constant (), a key metric in cosmology representing the universe's expansion rate. Conflicting results from independent…
Bayesian analysis of a Unified Dark Matter model with transition: can it alleviate the tension?
Emmanuel Frion, David Camarena, Leonardo Giani +4
We consider cosmological models in which Dark Matter (DM) and Dark Energy (DE) are described by a single component, dubbed Unified Dark Matter (UDM) models, in which the DE-like pa…
Euclid: Testing the Copernican principle with next-generation surveys
D. Camarena, V. Marra, Z. Sakr +112
The Copernican principle, the notion that we are not at a special location in the Universe, is one of the cornerstones of modern cosmology and its violation would invalidate the Fr…
A void in the Hubble tension? The end of the line for the Hubble bubble
David Camarena, Valerio Marra, Ziad Sakr +1
The Universe may feature large-scale inhomogeneities beyond the standard paradigm, implying that statistical homogeneity and isotropy may be reached only on much larger scales than…
Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies
Elcio Abdalla, Guillermo Franco Abellán, Amin Aboubrahim +200
In this paper we will list a few important goals that need to be addressed in the next decade, also taking into account the current discordances between the different cosmological…
The BEHOMO project: LTB -body simulations
V. Marra, T. Castro, D. Camarena +2
Our Universe may feature large-scale inhomogeneities and anisotropies which cannot be explained by the standard model of cosmology, that is, the homogeneous and isotropic FLRW metr…
Euclid: Forecast constraints on consistency tests of the CDM model
S. Nesseris, D. Sapone, M. Martinelli +112
The standard cosmological model is based on the fundamental assumptions of a spatially homogeneous and isotropic universe on large scales. An observational detection of a violation…
Late-transition vs smooth deformation models for the resolution of the Hubble crisis
George Alestas, David Camarena, Eleonora Di Valentino +4
Gravitational transitions at low redshifts () have been recently proposed as a solution to the Hubble and growth tensions. Such transitions would naturally lead to a trans…
The Copernican principle in light of the latest cosmological data
David Camarena, Valerio Marra, Ziad Sakr +1
We pursue a program to confront observations with inhomogeneous extensions of the FLRW metric. The main idea is to test the Copernican principle rather than assuming it a priori. W…
On the use of the local prior on the absolute magnitude of Type Ia supernovae in cosmological inference
David Camarena, Valerio Marra
A dark-energy which behaves as the cosmological constant until a sudden phantom transition at very-low redshift () seems to solve the >4 disagreement between the local an…
Cosmology Intertwined IV: The Age of the Universe and its Curvature
Eleonora Di Valentino, Luis A. Anchordoqui, Ozgur Akarsu +88
A precise measurement of the curvature of the Universe is of primeval importance for cosmology since it could not only confirm the paradigm of primordial inflation but also help in…
Cosmology Intertwined III: and
Eleonora Di Valentino, Luis A. Anchordoqui, Ozgur Akarsu +89
The standard Cold Dark Matter cosmological model provides a wonderful fit to current cosmological data, but a few tensions and anomalies became statistically significant with t…
Cosmology Intertwined II: The Hubble Constant Tension
Eleonora Di Valentino, Luis A. Anchordoqui, Ozgur Akarsu +90
The current cosmological probes have provided a fantastic confirmation of the standard Cold Dark Matter cosmological model, that has been constrained with unprecedented accurac…
Cosmology Intertwined I: Perspectives for the Next Decade
Eleonora Di Valentino, Luis A. Anchordoqui, Ozgur Akarsu +89
The standard Cold Dark Matter cosmological model provides an amazing description of a wide range of astrophysical and astronomical data. However, there are a few big open quest…
A new method to build the (inverse) distance ladder
David Camarena, Valerio Marra
The cosmic distance ladder is the succession of techniques by which it is possible to determine distances to astronomical objects. Here, we present a new method to build the cosmic…
Local determination of the Hubble constant and the deceleration parameter
David Camarena, Valerio Marra
The determination of the Hubble constant from the Cosmic Microwave Background by the Planck Collaboration [Aghanim et al. 2018] is in tension at with respect to the lo…
The impact of the cosmic variance on on cosmological analyses
David Camarena, Valerio Marra
The current tension between local (arXiv:1804.10655) and global (arXiv:1605.02985) measurements of cannot be fully explained by the concordance CDM model. It could…
Cosmological constraints on the radiation released during structure formation
David Camarena, Valerio Marra
During the process of structure formation in the universe matter is converted into radiation through a variety of processes such as light from stars, infrared radiation from cosmic…