Conveners
Particle astrophysics
- Clancy James (University of Erlangen-Nuernberg)
Particle astrophysics
- Roland Crocker (Australian National University)
Particle astrophysics
- Mercedes Paniccia (Universite de Geneve (CH))
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Shao-Feng Ge (MPIK)28/11/2016, 14:00
With the 1-3 mixing angle measured at reator neutrino experiments Daya Bay and RENO, there are still three unknown oscillation variables: the neutrino mass hierarchy, the octant of the atmospheric mixing angle, and the leptonic CP phase. Of these three, the CP phase is the most difficult to be measured precisely and important for distinguishing flavor symmetries. I will first review the status...
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Prativa Pritimita (Siksha O Anusandhan University, Bhubaneswar, India)28/11/2016, 14:20
We present a detailed discussion on neutrinoless double beta decay within
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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... -
Antoine David Kouchner (Universite de Paris VII (FR))28/11/2016, 14:40
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...
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Annarita Margiotta (Universita e INFN, Bologna (IT))28/11/2016, 15:00
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...
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Sally Robertson (University of Adelaide)28/11/2016, 15:20
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.
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Alex Kyriacou (University of Adelaide)28/11/2016, 16:10
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.
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Rohana Wijewardhana (University of Cincinnati)28/11/2016, 16:30
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
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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... -
Stephen Angus (IBS Center for Theoretical Physics of the Universe)28/11/2016, 16:50
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...
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Zhili Weng (Massachusetts Inst. of Technology (US))29/11/2016, 16:10
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...
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Valerio Formato (Universita e INFN, Perugia (IT))29/11/2016, 16:30
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...
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Simon Ellis (AAO)29/11/2016, 16:50
The annihilation of electrons and positrons in the Galactic centre has been observed since the 1970s, yet the origin of the positrons is still unknown. Models of high energy astrophysical sources, such as supernovae and low mass X-ray binaries, must be able to explain the very high bulge-to-disc ratio of the annihilation emission, either via the distribution of the sources or via the...
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Nicholas Rodd (Massachusetts Institute of Technology)29/11/2016, 17:10
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...
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Nigel Maxted (The University of New South Wales)29/11/2016, 17:30
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...
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