no code implementations • 7 Jul 2020 • Francesco Capozzi, Georg Raffelt
The brightness of the tip of the red-giant branch (TRGB) allows one to constrain novel energy losses that would lead to a larger core mass at helium ignition and thus to a brighter TRGB than expected by standard stellar models.
Solar and Stellar Astrophysics Astrophysics of Galaxies High Energy Physics - Phenomenology
no code implementations • 25 Oct 2019 • Edoardo Vitagliano, Irene Tamborra, Georg Raffelt
We briefly review the dominant neutrino fluxes at Earth from different sources and present the Grand Unified Neutrino Spectrum ranging from meV to PeV energies.
High Energy Astrophysical Phenomena High Energy Physics - Experiment High Energy Physics - Phenomenology Nuclear Theory
1 code implementation • 3 May 2019 • Lena Funcke, Georg Raffelt, Edoardo Vitagliano
Neutrinos may acquire small Dirac or Majorana masses by new low-energy physics in terms of the chiral gravitational anomaly, as proposed by Dvali and Funcke (2016).
High Energy Physics - Phenomenology
no code implementations • 18 Jul 2008 • Paolo Gondolo, Georg Raffelt
The all-flavor solar neutrino flux measured by the Sudbury Neutrino Observatory (SNO) constrains nonstandard energy losses to less than about 10% of the Sun's photon luminosity, superseding a helioseismological argument and providing new limits on the interaction strength of low-mass particles.
