249 citations · 1.3k across the 28 of their papers we have counts for
29 papers
The Science of the Einstein Telescope
Adrian Abac, Raul Abramo, Simone Albanesi +485
Einstein Telescope (ET) is the European project for a gravitational-wave (GW) observatory of third-generation. In this paper we present a comprehensive discussion of its science ob…
Low-redshift quasars in the SDSS Stripe 82 -- III MOS observations
D. Bettoni, R. Falomo, S. Paiano +2
We present multi object optical spectroscopy of the galaxies in the environment of 12 low-redshift (z < 0.5) quasars and of 11 inactive massive galaxies chosen to match the propert…
Polarisability and magnetisation of electrically -mouflaged objects: the Born-Infeld ModMax case study
Jose Beltrán Jiménez, Dario Bettoni, Philippe Brax
We consider a family of non-linear theories of electromagnetism that interpolate between Born-Infeld at small distances and ModMax at large distances. These models are duality inva…
GASP XXXVII: The Most Extreme Jellyfish Galaxies Compared to Other Disk Galaxies in Clusters, an HI Study
N. Luber, A. Müller, J. H. van Gorkom +19
We present the results of a VLA HI imaging survey aimed at understanding why some galaxies develop long extraplanar H tails, becoming extreme jellyfish galaxies. The observation…
Cosmology and direct detection of the Dark Axion Portal
Juan Cortabitarte Gutiérrez, Bradley J. Kavanagh, Núria Castelló-Mor +4
The Dark Axion Portal provides a model for Dark Matter (DM) in which both Dark Photons and Axions can contribute to the present day abundance of DM. We study the par…
Hubble-induced phase transitions on the lattice with applications to Ricci reheating
Dario Bettoni, Asier Lopez-Eiguren, Javier Rubio
Using 3+1 classical lattice simulations, we follow the symmetry breaking pattern and subsequent non-linear evolution of a spectator field non-minimally coupled to gravity when the…
Probing elastic interactions in the dark sector and the role of
Jose Beltrán Jiménez, Dario Bettoni, David Figueruelo +2
We place observational constraints on two models within a class of scenarios featuring an elastic interaction between dark energy and dark matter that only produces momentum exchan…
Inhomogeneous Hubble diagram from vector K-mouflage
Jose Beltran Jimenez, Dario Bettoni, Philippe Brax
In this Letter we construct the Hubble diagram for a Universe where dark matter is universally charged under a dark non-linear electromagnetic force which features a screening mech…
J-PAS: Forecasts for dark matter - dark energy elastic couplings
David Figueruelo, Miguel Aparicio Resco, Florencia A. Teppa Pannia +21
We consider a cosmological model where dark matter and dark energy feature a coupling that only affects their momentum transfer in the corresponding Euler equations. We perform a f…
Velocity-dependent interacting dark energy and dark matter with a Lagrangian description of perfect fluids
Jose Beltrán Jiménez, Dario Bettoni, David Figueruelo +2
We consider a cosmological scenario where the dark sector is described by two perfect fluids that interact through a velocity-dependent coupling. This coupling gives rise to an int…
Screening away the tension
Jose Beltran Jimenez, Dario Bettoni, Philippe Brax
This Essay explores consequences of a dark non-linear electromagnetic sector in a Universe with a net dark charge for matter. The cosmological dynamics can be described by a Lemaît…
Chiral gravitational waves and primordial black holes in UV-protected Natural Inflation
Juan P. Beltrán Almeida, Nicolás Bernal, Dario Bettoni +1
We consider an UV-protected Natural Inflation scenario involving Chern-Simons-like interactions between the inflaton and some beyond the Standard Model gauge fields. The accelerate…
On cosmological signatures of baryons-dark energy elastic couplings
Jose Beltrán Jiménez, Dario Bettoni, David Figueruelo +1
We consider a scenario where dark energy and baryons are dynamically coupled without any energy transfer. In this scenario, the background cosmology is unaffected and, at the pertu…
Charged Dark Matter and the tension
Jose Beltrán Jiménez, Dario Bettoni, Philippe Brax
We consider cosmological models where dark matter is charged under a dark Abelian gauge field. This new interaction is repulsive and competes with gravity on large scales and in th…
Hubble-induced phase transitions: Walls are not forever
Dario Bettoni, Javier Rubio
The interplay between non-minimally coupled scalar fields and a kinetic-dominated era following the end of inflation triggers the spontaneous symmetry breaking of internal symmetri…
Measuring gravity at cosmological scales
Luca Amendola, Dario Bettoni, Ana Marta Pinho +1
This paper is a pedagogical introduction to models of gravity and how to constrain them through cosmological observations. We focus on the Horndeski scalar-tensor theory and on the…
Gravitational waves from global cosmic strings in quintessential inflation
Dario Bettoni, Guillem Domènech, Javier Rubio
The combination of non-minimal couplings to gravity with the post-inflationary kinetic-dominated era typically appearing in quintessential inflation scenarios may lead to the spont…
Quintessential Affleck-Dine baryogenesis with non-minimal couplings
Dario Bettoni, Javier Rubio
We present a novel Affleck-Dine scenario for the generation of the observed baryon asymmetry of the Universe based on the non-trivial interplay between quintessential inflationary…
Doppelgänger dark energy: modified gravity with non-universal couplings after GW170817
Luca Amendola, Dario Bettoni, Guillem Domènech +1
Gravitational Wave (GW) astronomy severely narrowed down the theoretical space for scalar-tensor theories. We propose a new class of attractor models for Horndeski action in which…
GASP II. A MUSE view of extreme ram-pressure stripping along the line of sight: kinematics of the jellyfish galaxy JO201
C. Bellhouse, Y. L. Jaffe, G. K. T. Hau +11
This paper presents a spatially-resolved kinematic study of the jellyfish galaxy JO201, one of the most spectacular cases of ram-pressure stripping (RPS) in the GASP (GAs Stripping…
Testing Lorentz invariance of dark matter with satellite galaxies
Dario Bettoni, Adi Nusser, Diego Blas +1
We develop the framework for testing Lorentz invariance in the dark matter sector using galactic dynamics. We consider a Lorentz violating (LV) vector field acting on the dark matt…
Speed of Gravitational Waves and the Fate of Scalar-Tensor Gravity
Dario Bettoni, Jose María Ezquiaga, Kurt Hinterbichler +1
The direct detection of gravitational waves (GWs) is an invaluable new tool to probe gravity and the nature of cosmic acceleration. A large class of scalar-tensor theories predict…
Dynamics of non-minimally coupled perfect fluids
Dario Bettoni, Stefano Liberati
We present a general formulation of the theory for a non-minimally coupled perfect fluid in which both conformal and disformal couplings are present. We discuss how such non-minima…
Shaken, not stirred: kinetic mixing in scalar-tensor theories of gravity
Dario Bettoni, Miguel Zumalacárregui
Kinetic mixing between the metric and scalar degrees of freedom is an essential ingredient in contemporary scalar-tensor theories. This often makes hard to understand their physica…