Conveners
Particle astrophysics
- Clancy James (University of Erlangen-Nuernberg)
Particle astrophysics
- Roland Crocker (Australian National University)
Particle astrophysics
- Mercedes Paniccia (Universite de Geneve (CH))
We present a detailed discussion on neutrinoless double beta decay within
a class of left-right symmetric models where neutrino mass originates by natural type II
seesaw dominance. The spontaneous symmetry breaking is implemented with doublets,
triplets and bidoublet scalars. The fermion sector is extended with an extra sterile neutrino
per generation that helps in implementing the seesaw...
ORCA (Oscillations Research with Cosmics in the Abyss) is the low-energy branch of KM3NeT, the next generation underwater Cherenkov neutrino detector in the Mediterranean. Its primary goal is to resolve the long-standing unsolved question of whether the neutrino mass ordering is normal or inverted by measuring matter oscillation effects with atmospheric neutrinos. The ORCA design foresees a...
The ANTARES experiment has been running in its final configuration since 2008. It is the largest neutrino telescope in the Northern hemisphere. A major goal of neutrino telescopes is the search for astrophysical neutrinos in the TeV-PeV range coming from resolved Galactic and extra Galactic sources or due to a diffuse cosmic neutrino flux.
In this kind of searches, a special role is played...
Understanding the properties of the astrophysical neutrino flux measured by IceCube relies upon the ability to reconstruct the energies of the muon events observed in the detector. In this talk, I will describe a maximum likelihood method that interprets the full pattern of reconstructed energy losses from each muon track to obtain a best estimate of the muon energy as the event entered the detector.
IceCube has detected many astrophysical neutrinos, but their ultimate origin is as-yet unknown. This talk will focus on starburst galaxies as a potential source of these neutrinos, and will discuss the prospects for finding correlations of these sources with the existing neutrino events.
Abstract
Axion stars, gravitationally bound states of low-energy axions, described by a field theory with potential energy $f^2 m^2(1-Cos (A/f))$ have
a maximum mass allowed by gravitational stability. Weakly bound states
obtaining this maximum mass have sufficiently large radii such that they are
dilute, and as a result, they are well described by a leading-order expansion
of the axion...
It has been proposed that the long-standing soft X-ray excess in galaxy clusters could be explained by conversion of a 200eV cosmic ALP background into photons in the cluster magnetic field. However, for an isotropic Gaussian model of the magnetic field in the Coma cluster, the excess is typically under-produced in the central region when compared to observations. In this talk I will explore...
The Alpha Magnetic Spectrometer, AMS, is a general purpose high energy particle physics detector. It was installed on the International Space Station, ISS, on 19 May 2011 to conduct a unique long duration mission of fundamental physics research in space.
In this contribution, precision measurements by AMS of the primary cosmic ray positron flux, electron flux and antiproton flux are...
The exact behavior of the nuclei fluxes with rigidity and how they relate to each other is important for understanding the production, acceleration and propagation mechanisms of charged cosmic rays. Precise measurements with the Alpha Magnetic Spectrometer on the International Space Station of the light nuclei fluxes and their ratios in primary cosmic rays with rigidities from GV to TV range...
Conventional gamma-ray point-source searches involve looking for sources that are individually detectable with a predetermined statistical significance. A shortcoming of this approach is that a population of sources that are each below this statistical threshold cannot be found. Nevertheless such a population will modify the statistics of the dataset away from a Poisson distribution and can be...
Gamma-ray astronomy may offer answers to a long-standing question of high energy astrophysics: Where do cosmic rays come from? The gamma-ray emission seen from some supernova remnants is now known to be from distant populations of cosmic-rays (probably accelerated locally) interacting with gas, but there is still much work to be done in accounting for the Galactic cosmic-ray flux. The Mopra...
