4th EuCAPT Annual Symposium

Session

Particle Astrophysics

14 May 2024, 14:00

500/1-001 - Main Auditorium (CERN)

Conveners

Particle Astrophysics

• Georg Raffelt (MPI Physik, Munich)

Particle Astrophysics

• Georg Raffelt (MPI Physik, Munich)

133. Supernova 1987 neutrinos: status and prospects

Damiano Fiorillo (Niels Bohr International Academy, Niels Bohr Institute,4 University of Copenhagen, 2100 Copenhagen, Denmark)

14/05/2024, 14:00

particle astrophysics

134. Cosmic-ray propagation

Sarah Recchia (INAF)

14/05/2024, 14:30

135. High-energy emissions from AGN and starburst galaxies

Enrico Peretti (CNRS)

14/05/2024, 15:00

26. Status of Direct Determination of Solar Neutrino Fluxes after Borexino

Joao Paulo Pinheiro (Universitat de Barcelona)

14/05/2024, 16:15

particle astrophysics

We determine the solar neutrino fluxes from the global analysis of the most up-to-date terrestrial and solar neutrino data including the final results of the three phases of Borexino. The analysis are performed in the framework of three-neutrino mixing with and without accounting for the solar luminosity constraint. We discuss the independence of the results on the input from the Gallium...

145. White dwarf cooling through neutrinos and L_mu - L_tau

Jaime Hoefken Zink

14/05/2024, 16:22

particle astrophysics

Hot white dwarfs lose energy mainly in the form of neutrinos through plasmon decay from the inner part of the star. BSM physics can have visible contributions to the cooling of these compact objects. The aim of this study is to show how hot white dwarf cooling could be altered by a dark photon from the L_mu - L_tau model and explore these effects from ultra-light to heavy intermediators. This...

70. Stochastic modelling of cosmic ray sources sped up

Anton Stall (Institute for Theoretical Particle Physics and Cosmology (TTK), RWTH Aachen University)

14/05/2024, 16:29

particle astrophysics

Cosmic rays can be probed via direct detection at the Earth’s position or indirectly through diffuse emissions of gamma-rays and neutrinos produced by the interaction of cosmic rays with the interstellar medium in other parts of the Galaxy. It is commonly assumed in the modelling of galactic cosmic rays that the source density is smooth and steady. However, supernova remnants, the likely...

56. Constraints on the Cosmic Neutrino Background from NGC1068

Jack Franklin

14/05/2024, 16:35

particle astrophysics

We investigate IceCube's ability to constrain the neutrino relic abundance using events from the recently identified neutrino source NGC1068. Since these neutrinos have large energies $\gtrsim$ 1 TeV and have propagated through large distances, they make a great probe for overabundances of the cosmic neutrino background.

The propagation of neutrinos from NGC1068 was simulated by solving a...

28. New bounds on monopole abundance from cosmic magnetic fields

Daniele Perri (SISSA Trieste, Trieste)

14/05/2024, 16:43

particle astrophysics

Magnetic monopoles are intriguing hypothetical particles and inevitable predictions of Theories of Grand Unification. They are produced during phase transitions in the early universe, but mechanisms like the Schwinger effect in strong magnetic fields could also contribute to the monopole number density. I will show how from the detection of intergalactic magnetic fields we can infer additional...

20. Fast particle acceleration in 3D hybrid simulations of quasi-perpendicular shocks

Luca Orusa (Princeton University)

14/05/2024, 16:50

particle astrophysics

Understanding the conditions conducive to particle acceleration at collisionless, non-relativistic shocks is important for the origin of cosmic rays. We use hybrid (kinetic ions—fluid electrons) kinetic simulations to investigate particle acceleration and magnetic field amplification at non-relativistic, weakly magnetized, quasi-perpendicular shocks. So far, no self-consistent kinetic...