Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Mastrototaro, Leonardo"'
The $\gamma$ ray emission originating from in-flight annihilation (IA) of positrons is a powerful observable for constraining high-energy positron production from exotic sources. By comparing diffuse $\gamma$ ray observations of INTEGRAL, COMPTEL and
Externí odkaz:
http://arxiv.org/abs/2405.08482
Publikováno v:
Eur. Phys. J. C 84, 1076 (2024)
Both the Barrow and Tsallis $\delta$ entropies are one-parameter generalizations of the black-hole entropy, with the same microcanonical functional form. The ensuing deformation is quantified by a dimensionless parameter $\Delta$, which in the case o
Externí odkaz:
http://arxiv.org/abs/2403.09797
Autor:
Carenza, Pierluca, Lucente, Giuseppe, Mastrototaro, Leonardo, Mirizzi, Alessandro, Serpico, Pasquale Dario
Sterile neutrinos with masses up to $\mathcal{O} (100)$ MeV can be copiously produced in a supernova (SN) core, through the mixing with active neutrinos. In this regard the SN 1987A detection of neutrino events has been used to put constraints on act
Externí odkaz:
http://arxiv.org/abs/2311.00033
Publikováno v:
Phys. Rev. D 108, 123028 (2023)
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 process that is consistent with a GWB has been recently reported by th
Externí odkaz:
http://arxiv.org/abs/2306.16977
Publikováno v:
Eur.Phys.J.C (2023) 83:239
The study of neutrino pair annihilation into electron-positron pairs ($\nu{\bar \nu}\to e^-e^+$) is astrophysically well-motivated because it is a possible powering mechanism for the gamma-ray bursts (GRBs). In this paper, we estimate the gamma-ray e
Externí odkaz:
http://arxiv.org/abs/2302.14200
Publikováno v:
Eur. Phys. J. C (2022) 82:1155
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 transformations founded in [ Phys.Rev.D 10.1103/PhysRevD.102.121703], we probe
Externí odkaz:
http://arxiv.org/abs/2208.06664
Publikováno v:
JCAP 2301, 011 (2023)
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 Relativity is modified by an additional Chern-Simons (CS) term. Assuming tha
Externí odkaz:
http://arxiv.org/abs/2207.08067
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 proposed as a new way to extract energy and in this paper, we investigat
Externí odkaz:
http://arxiv.org/abs/2206.12988
Autor:
Mastrototaro, Leonardo, Carenza, Pierluca, Chianese, Marco, Fiorillo, Damiano F. G., Miele, Gennaro, Mirizzi, Alessandro, Montanino, Daniele
Publikováno v:
Eur. Phys. J. C (2022) 82:1012
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 assumption that the sources of these particles are of extragalactic ori
Externí odkaz:
http://arxiv.org/abs/2206.08945
Autor:
Lucente, Giuseppe, Mastrototaro, Leonardo, Carenza, Pierluca, Di Luzio, Luca, Giannotti, Maurizio, Mirizzi, Alessandro
Publikováno v:
Phys. Rev. D 105, 123020 (2022)
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 solve the strong CP problem, and might arise as well in more general ax
Externí odkaz:
http://arxiv.org/abs/2203.15812