Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of Naples Federico IIIT4k papers
- Centre National de la Recherche ScientifiqueFR3.7k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma IIT3.4k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR3.3k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di GenovaIT3.1k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR3.1k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PisaIT3k papers
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiIT2.9k papers
- Rutherford Appleton LaboratoryGB2.8k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT2.8k papers
- Sapienza University of RomeIT2.7k papers
- The Ohio State UniversityUS2.7k papers
18 papers · 2 filters
On exact solutions for quintessential (inflationary) cosmological models with exponential potentials
Ester Piedipalumbo, Paolo Scudellaro, Giampiero Esposito +1
We first study dark energy models with a minimally-coupled scalar field and exponential potentials, admitting exact solutions for the cosmological equations: actually, it turns out…
On the Number of Cosmic Strings
Rosa Consiglio, Olga Sazhina, Giuseppe Longo +2
The number of cosmic strings in the observable universe is relevant in determining the probability of detecting such cosmic defects through their gravitational signatures. In parti…
Future constraints on neutrino isocurvature perturbations in the curvaton scenario
Eleonora Di Valentino, Massimiliano Lattanzi, Gianpiero Mangano +2
In the curvaton scenario, residual isocurvature perturbations can be imprinted in the cosmic neutrino component after the decay of the curvaton field, implying in turn a non-zero c…
Directional limits on persistent gravitational waves using LIGO S5 science data
J. Abadie, B. P. Abbott, R. Abbott +712
The gravitational-wave (GW) sky may include nearby pointlike sources as well as astrophysical and cosmological stochastic backgrounds. Since the relative strength and angular distr…
Coarse-Grained Cosmological Perturbation Theory
Massimo Pietroni, Gianpiero Mangano, Ninetta Saviano +1
Semi-analytical methods, based on Eulerian perturbation theory, are a promising tool to follow the time evolution of cosmological perturbations at small redshifts and at mildly non…
Cosmography in f(T)-gravity
S. Capozziello, V. F. Cardone, H. Farajollahi +1
Being based on the only assumption that the universe is homogenous and isotropic on large scales, cosmography is an ideal tool to investigate the cosmic expansion history in a almo…
Recovering MOND from extended metric theories of gravity
T. Bernal, S. Capozziello, J. C. Hidalgo +1
We show that the Modified Newtonian Dynamics (MOND) regime can be fully recovered as the weak-field limit of a particular theory of gravity formulated in the metric approach. This…
Noether symmetry for Gauss-Bonnet dilatonic gravity
Abhik Kumar Sanyal, Claudio Rubano, Ester Piedipalumbo
Noether symmetry for Gauss-Bonnet-Dilatonic interaction exists for a constant dilatonic scalar potential and a linear functional dependence of the coupling parameter on the scalar…
Systematics in the Gamma Ray Bursts Hubble diagram
V. F. Cardone, M. Perillo, S. Capozziello
Thanks to their enormous energy release which allows to detect them up to very high redshift, Gamma Rays Bursts (GRBs) have recently attracted a lot of interest to probe the Hubble…
Standardizing the GRBs with the Amati Ep,i - Eiso relation: the updated Hubble diagram and implications for cosmography
Marek Demianski, Ester Piedipalumbo
The correlation between the peak photon energy of the internal spectrum Ep,i and isotropic equivalent radiated energy Eiso (the Amati relation) is explored in a scalar field model…
Testing feasibility of scalar-tensor gravity by scale dependent mass and coupling to matter
D. F. Mota, V. Salzano, S. Capozziello
We investigate whether there are any cosmological evidences for a scalar field with a mass and coupling to matter which change accordingly to the properties of the astrophysical sy…
Comprehensive cosmographic analysis by Markov Chain Method
Salvatore Capozziello, Ruth Lazkoz, Vincenzo Salzano
We study the possibility to extract model independent information about the dynamics of the universe by using Cosmography. We intend to explore it systematically, to learn about it…
A matter-dominated cosmological model with variable and . Confrontation of theoretical predictions with observational data
Ester Piedipalumbo, Paolo Scudellaro, Giampiero Esposito +1
In the framework of renormalization-group improved cosmologies, we analyze both theoretically and observationally the exact and general solution of the matter-dominated cosmologica…
A robust upper limit on N_eff from BBN, circa 2011
Gianpiero Mangano, Pasquale D. Serpico
We derive here a robust bound on the effective number of neutrinos from constraints on primordial nucleosynthesis yields of deuterium and helium. In particular, our results are bas…
The Luminosity Function of the NoSOCS Galaxy Cluster Sample
E. De Filippis, M. Paolillo, G. Longo +3
We present the analysis of the luminosity function of a large sample of galaxy clusters from the Northern Sky Optical Cluster Survey, using latest data from the Sloan Digital Sky S…
Nonlinear electrodynamics and CMB polarization
H. J. Mosquera Cuesta, G. Lambiase
Recently WMAP and BOOMERanG experiments have set stringent constraints on the polarization angle of photons propagating in an expanding universe: . The po…
I. Flux and color variations of the quadruply imaged quasar HE 0435-1223
D. Ricci, J. Poels, A. Elyiv +32
aims: We present VRi photometric observations of the quadruply imaged quasar HE 0435-1223, carried out with the Danish 1.54m telescope at the La Silla Observatory. Our aim was to m…
Systematic biases on galaxy haloes parameters from Yukawa-like gravitational potentials
V. F. Cardone, S. Capozziello
A viable alternative to the dark energy as a solution of the cosmic speed up problem is represented by Extended Theories of Gravity. Should this be indeed the case, there will be a…