2.7k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR469 papers
- Université d'OrléansFR412 papers
- Observatoire de ParisFR236 papers
- Max Planck Institute for Radio AstronomyDE174 papers
- University of ManchesterGB160 papers
- Netherlands Institute for Radio AstronomyNL138 papers
- Université Paris Sciences et LettresFR135 papers
- Goddard Space Flight CenterUS121 papers
- Laboratoire d’études spatiales et d’instrumentation en astrophysiqueFR110 papers
- Observatoire Radioastronomique de NançayFR104 papers
- University of California, BerkeleyUS101 papers
- University of AmsterdamNL100 papers
11 papers · 1 filter
Forecasting the sensitivity of Pulsar Timing Arrays to gravitational wave backgrounds
Stanislav Babak, Mikel Falxa, Gabriele Franciolini +1
Pulsar Timing Array (PTA) observations hinted towards the existence of a stochastic gravitational wave background (SGWB) in the nHz frequency band. Still, the nature of the SGWB si…
First upper limits on the 21 cm signal power spectrum from cosmic dawn from one night of observations with NenuFAR
S. Munshi, F. G. Mertens, L. V. E. Koopmans +24
The redshifted 21 cm signal from neutral hydrogen is a direct probe of the physics of the early universe and has been an important science driver of many present and upcoming radio…
Questioning the tension via the look-back time
Salvatore Capozziello, Giuseppe Sarracino, Alessandro D. A. M. Spallicci
The Hubble tension is investigated taking into account the cosmological look-back time. Specifically, considering a single equation, widely used in standard cosmology, it is possib…
Investigating dark energy by electromagnetic frequency shifts II: the Pantheon+ sample
Giuseppe Sarracino, Alessandro D. A. M. Spallicci, Salvatore Capozziello
Following results presented in Spallicci et al. (Eur Phys J Plus 137, 2022) by the same authors, we investigate the observed red shift , working under the hypothesis that it mig…
Investigating dark energy by electromagnetic frequency shifts
Alessandro D. A. M. Spallicci, Giuseppe Sarracino, Salvatore Capozziello
The observed red shift might be composed by the expansion red shift and an additional frequency shift , towards the red or the blue, by considering Exten…
Cosmology and the massive photon frequency shift in the Standard-Model Extension
Alessandro D. A. M. Spallicci, José A. Helayël-Neto, Martin López-Corredoira +1
The total red shift might be recast as a combination of the expansion red shift and a static shift due to the energy-momentum tensor non-conservation of a photon propagating th…
Supernovae and photon frequency shift induced by the Standard-Model Extension
Alessandro D. A. M. Spallicci, Fabio Ragosta, José A. Helayël-Neto +1
We revisit for 714 SNeIa the discrepancy between the red-shift associated to the distance modulus and the spectroscopic red-shift. Previous work has shown that the total red-sh…
European Pulsar Timing Array Limits on Continuous Gravitational Waves from Individual Supermassive Black Hole Binaries
Stanislav Babak, Antoine Petiteau, Alberto Sesana +33
We have searched for continuous gravitational wave (CGW) signals produced by individually resolvable, circular supermassive black hole binaries (SMBHBs) in the latest EPTA dataset,…
European Pulsar Timing Array Limits On An Isotropic Stochastic Gravitational-Wave Background
Lindley Lentati, Stephen R. Taylor, Chiara M. F. Mingarelli +33
We present new limits on an isotropic stochastic gravitational-wave background (GWB) using a six pulsar dataset spanning 18 yr of observations from the 2015 European Pulsar Timing…
First LOFAR observations at very low frequencies of cluster-scale non-thermal emission: the case of Abell 2256
R. J. van Weeren, H. J. A. Rottgering, D. A. Rafferty +79
Abell 2256 is one of the best known examples of a galaxy cluster hosting large-scale diffuse radio emission that is unrelated to individual galaxies. It contains both a giant radio…
Placing limits on the stochastic gravitational-wave background using European Pulsar Timing Array data
R. van Haasteren, Y. Levin, G. H. Janssen +16
Direct detection of low-frequency gravitational waves ( Hz) is the main goal of pulsar timing array (PTA) projects. One of the main targets for the PTAs is to me…