Zobrazeno 1 - 10
of 112
pro vyhledávání: '"Vitagliano, Edoardo"'
Autor:
Telalovic, Bernanda, Fiorillo, Damiano F. G., Martínez-Miravé, Pablo, Vitagliano, Edoardo, Bustamante, Mauricio
Many particles predicted by extensions of the Standard Model feature interactions with neutrinos, e.g., Majoron-like bosons $\phi$. If the mass of $\phi$ is larger than about 10 keV, they can be produced abundantly in the core of the next galactic co
Externí odkaz:
http://arxiv.org/abs/2406.15506
We revisit supernova (SN) bounds on a hidden sector consisting of millicharged particles $\chi$ and a massless dark photon. Unless the self-coupling is fine-tuned to be small, rather than exiting the SN core as a gas, the particles form a relativisti
Externí odkaz:
http://arxiv.org/abs/2404.07714
Autor:
Gouttenoire, Yann, Vitagliano, Edoardo
Domain walls (DWs) are topological defects originating from phase transitions in the early universe. In the presence of an energy imbalance between distinct vacua, enclosed DW cavities shrink until the entire network disappears. By studying the dynam
Externí odkaz:
http://arxiv.org/abs/2311.07670
Autor:
Fiorillo, Damiano F. G., Heinlein, Malte, Janka, Hans-Thomas, Raffelt, Georg, Vitagliano, Edoardo, Bollig, Robert
Publikováno v:
Phys.Rev.D 108 (2023) 8, 083040
We return to interpreting the historical SN~1987A neutrino data from a modern perspective. To this end, we construct a suite of spherically symmetric supernova models with the Prometheus-Vertex code, using four different equations of state and five c
Externí odkaz:
http://arxiv.org/abs/2308.01403
Neutrino-neutrino scattering could have a large secret component that would turn neutrinos within a supernova (SN) core into a self-coupled fluid. Neutrino transport within the SN core, emission from its surface, expansion into space, and the flux sp
Externí odkaz:
http://arxiv.org/abs/2307.15122
When hypothetical neutrino secret interactions ($\nu$SI) are large, they form a fluid in a supernova (SN) core, flow out with sonic speed, and stream away as a fireball. For the first time, we tackle the complete dynamical problem and solve all steps
Externí odkaz:
http://arxiv.org/abs/2307.15115
Autor:
Gouttenoire, Yann, Vitagliano, Edoardo
Recently, Pulsar Timing Array (PTA) collaborations have detected a stochastic gravitational wave background (SGWB) at nano-Hz frequencies, with Domain Wall networks (DWs) proposed as potential sources. To be cosmologically viable, they must annihilat
Externí odkaz:
http://arxiv.org/abs/2306.17841
Autor:
Diamond, Melissa, Fiorillo, Damiano F. G., Marques-Tavares, Gustavo, Tamborra, Irene, Vitagliano, Edoardo
Publikováno v:
Phys.Rev.Lett. 132 (2024) 10, 101004
The metastable hypermassive neutron star produced in the coalescence of two neutron stars can copiously produce axions that radiatively decay into $\mathcal{O}(100)$~MeV photons. These photons can form a fireball with characteristic temperature small
Externí odkaz:
http://arxiv.org/abs/2305.10327
Publikováno v:
JCAP06(2023)055
We propose a new scenario for the formation of asteroid-mass primordial black holes (PBHs). Our mechanism is based on the annihilation of the string-wall network associated with the breaking of a $U(1)$ global symmetry into a discrete $Z_N$ symmetry.
Externí odkaz:
http://arxiv.org/abs/2303.14107
Publikováno v:
Phys.Rev.D 107 (2023) 10, 103029
New feebly interacting particles would emerge from a supernova core with 100-MeV-range energies and produce $\gamma$-rays by subsequent decays. These would contribute to the diffuse cosmic $\gamma$-ray background or would have shown up in the Solar M
Externí odkaz:
http://arxiv.org/abs/2303.11395