170 citations · 614 across the 20 of their papers we have counts for
21 papers
Primordial gravitational waves from spontaneous Lorentz symmetry breaking
Mohsen Khodadi, Gaetano Lambiase, Leonardo Mastrototaro +1
We study the effect of Spontaneous Lorentz Symmetry Breaking (SLSB) on Primordial Gravitational Waves (PGWs) generated during inflation. The SLSB is induced by a time-like Bumblebe…
In-flight positron annihilation as a probe of feebly interacting particles
Shyam Balaji, Pierluca Carenza, Pedro De la Torre Luque +2
Core-collapse supernovae (SNe) provide a unique environment to study Feebly Interacting Particles (FIPs) such as Axion-Like Particles (ALPs), sterile neutrinos, and Dark Photons (D…
rays from in-flight positron annihilation as a probe of new physics
Pedro De la Torre Luque, Shyam Balaji, Pierluca Carenza +1
The ray emission originating from in-flight annihilation (IA) of positrons is a powerful observable for constraining high-energy positron production from exotic sources. By com…
Imprints of Barrow-Tsallis Cosmology in Primordial Gravitational Waves
Petr Jizba, Gaetano Lambiase, Giuseppe Gaetano Luciano +1
Both the Barrow and Tsallis entropies are one-parameter generalizations of the black-hole entropy, with the same microcanonical functional form. The ensuing deformation is quan…
Comprehensive constraints on heavy sterile neutrinos from core-collapse supernovae
Pierluca Carenza, Giuseppe Lucente, Leonardo Mastrototaro +2
Sterile neutrinos with masses up to MeV can be copiously produced in a supernova (SN) core, through the mixing with active neutrinos. In this regard the SN 1987…
Astrophysical neutrino oscillations after pulsar timing array analyses
Gaetano Lambiase, Leonardo Mastrototaro, Luca Visinelli
The pattern of neutrino flavor oscillations could be altered by the influence of noisy perturbations such as those arising from a gravitational wave background (GWB). A stochastic…
Spontaneous Lorentz symmetry breaking effects on GRBs jets arising from neutrino pair annihilation process near a black hole
Mohsen Khodadi, Gaetano Lambiase, Leonardo Mastrototaro
The study of neutrino pair annihilation into electron-positron pairs () is astrophysically well-motivated because it is a possible powering mechanism for the g…
Shadow, lensing, quasinormal modes, greybody bounds and neutrino propagation by dyonic ModMax black holes
Reggie C. Pantig, Leonardo Mastrototaro, Gaetano Lambiase +1
Motivated by recent work on the Modified Maxwell (ModMax) black holes [Phys.Lett.B 10.1016/j.physletb.2020.136011], which are invariant in duality rotations and conformal transform…
Gravitational waves and neutrino oscillations in Chern-Simons axion gravity
Gaetano Lambiase, Leonardo Mastrototaro, Luca Visinelli
We investigate the modifications in the neutrino flavor oscillations under the influence of a stochastic gravitational wave background (SGWB), in a scenario in which General Relati…
Energy Extraction via Magnetic Reconnection in Lorentz breaking Kerr-Sen and Kiselev Black Holes
Amodio Carleo, Gaetano Lambiase, Leonardo Mastrototaro
Black holes can accumulate a large amount of energy, responsible for highly energetic astrophysical phenomena Recently, fast magnetic reconnection (MR) of the magnetic field was pr…
Constraining axion-like particles with the diffuse gamma-ray flux measured by the Large High Altitude Air Shower Observatory
Leonardo Mastrototaro, Pierluca Carenza, Marco Chianese +4
The detection of very high-energy neutrinos by IceCube experiment supports the existence of a comparable gamma-ray counterpart from the same cosmic accelerators. Under the likely a…
Axion signatures from supernova explosions through the nucleon electric-dipole portal
Giuseppe Lucente, Leonardo Mastrototaro, Pierluca Carenza +3
We consider axions coupled to nucleons and photons only through the nucleon electric-dipole moment (EDM) portal. This coupling is a model-independent feature of QCD axions, which s…
Cosmological constraints on heavy sterile neutrinos
L. Mastrototaro
We consider heavy sterile neutrinos , with mass in the range 10 MeV MeV, thermally produced in the early universe and freezing out after t…
511 keV line constraints on feebly interacting particles from supernovae
Francesca Calore, Pierluca Carenza, Maurizio Giannotti +4
Feebly interacting particles with masses with O(10-100) MeV can be copiously produced by core-collapse supernovae (SNe). In this paper we consider the case of MeV-ish sterile neutr…
Testing extended theories of gravity with GRBs
L. Mastrototaro, G. Lambiase
We present our studies on the neutrino pairs annihilation into electron-positron pairs () near the surface of a neutron star in the framework of extended theor…
Neutrino spin oscillations in conformally gravity coupling models and quintessence surrounding a black hole
Leonardo Mastrototaro, Gaetano Lambiase
In this paper, we study the spin transitions of neutrinos caused by the interaction with a gravitational field. We consider a model with a scalar field (describing screening effect…
Massive sterile neutrinos in the early universe: From thermal decoupling to cosmological constraints
Leonardo Mastrototaro, Pasquale Dario Serpico, Alessandro Mirizzi +1
We consider relatively heavy neutrinos , mostly contributing to a sterile state , with mass in the range 10 MeV MeV, which are therma…
Neutrino pair annihilation () in the presence of quintessence surrounding a black hole
G. Lambiase, L. Mastrototaro
Quintessence fields, introduced to explain the speed-up of the Universe, might affect the geometry of spacetime surrounding black holes, as compared to the standard Schwarzschild a…
Einstein, Planck and Vera Rubin: relevant encounters between the Cosmological and the Quantum Worlds
Paolo Salucci, Giampiero Esposito, Gaetano Lambiase +38
In Cosmology and in Fundamental Physics there is a crucial question like: where the elusive substance that we call Dark Matter is hidden in the Universe and what is it made of?, th…
Effects of modified theories of gravity on neutrino pair annihilation energy deposition near neutron stars
Gaetano Lambiase, Leonardo Mastrototaro
We study the neutrino pairs annihilation into electron-positron pairs () near the surface of a neutron star. The analysis is performed in the framework of…
Heavy sterile neutrino emission in core-collapse supernovae: Constraints and signatures
Leonardo Mastrototaro, Alessandro Mirizzi, Pasquale Dario Serpico +1
Heavy sterile neutrinos with masses MeV mixing with active neutrinos can be produced in the core of a collapsing supernova (SN). In order to avoid an excessive…