Origins of Extragalactic Cosmic Ray Nuclei by Contracting Alignment Patterns induced in the Galactic Magnetic Field
arXiv:1807.08734 · doi:10.1016/j.astropartphys.2018.11.004
Abstract
We present a novel approach to search for origins of ultra-high energy cosmic rays. These particles are likely nuclei that initiate extensive air showers in the Earth's atmosphere. In large-area observatories, the particle arrival directions are measured together with their energies and the atmospheric depth at which their showers maximize. The depths provide rough measures of the nuclear charges. In a simultaneous fit to all observed cosmic rays we use the galactic magnetic field as a mass spectrometer and adapt the nuclear charges such that their extragalactic arrival directions are concentrated in as few directions as possible. Using different simulated examples we show that, with the measurements on Earth, reconstruction of extragalactic source directions is possible. In particular, we show in an astrophysical scenario that source directions can be reconstructed even within a substantial isotropic background.
arXiv comment14 pages, 15 figures
References in corpus (33)
- TensorFlow: Large-Scale Machine Learning on Heterogeneous Distributed Systems
- The Pierre Auger Cosmic Ray Observatory
- Cosmological Magnetic Fields: Their Generation, Evolution and Observation
- A New Model of the Galactic Magnetic Field
- Measurement of the energy spectrum of cosmic rays above 10^18 eV using the Pierre Auger Observatory
- Observation of a Large-scale Anisotropy in the Arrival Directions of Cosmic Rays above eV
- The surface detector array of the Telescope Array experiment
- Depth of Maximum of Air-Shower Profiles at the Pierre Auger Observatory: Measurements at Energies above 10^17.8 eV
- Indications of Intermediate-Scale Anisotropy of Cosmic Rays with Energy Greater Than 57 EeV in the Northern Sky Measured with the Surface Detector of the Telescope Array Experiment
- The Galactic Magnetic Field
- Depth of Maximum of Air-Shower Profiles at the Pierre Auger Observatory: Composition Implications
- Deriving global structure of the Galactic Magnetic Field from Faraday Rotation Measures of extragalactic sources
- Indication of anisotropy in arrival directions of ultra-high-energy cosmic rays through comparison to the flux pattern of extragalactic gamma-ray sources
- Ultra high energy cosmic rays and the large scale structure of the galactic magnetic field
- Mapping deflections of extragalactic Ultra-High Energy Cosmic Rays in magnetohydrodynamic simulations of the Local Universe
- Lensing of ultra-high energy cosmic rays in turbulent magnetic fields
- CMB Constraints on a Stochastic Background of Primordial Magnetic Fields
- New constraints on modelling the random magnetic field of the MW
- Propagation of Ultra High Energy Cosmic Rays in Extragalactic Magnetic Fields: A view from cosmological simulations
- Signatures of galactic magnetic lensing upon ultra high energy cosmic rays
- Ultrahigh Energy Nuclei in the Turbulent Galactic Magnetic Field
- Mapping UHECRs deflections through the turbulent galactic magnetic field with the latest RM data
- Reinterpreting the development of extensive air showers initiated by nuclei and photons
- An upper limit on the strength of the extragalactic magnetic field from ultra-high-energy cosmic-ray anisotropy
- Search for signatures of magnetically-induced alignment in the arrival directions measured by the Pierre Auger Observatory
- PARSEC: A Parametrized Simulation Engine for Ultra-High Energy Cosmic Ray Protons
- The Galactic Magnetic Field and Ultrahigh-Energy Cosmic Ray Deflections
- Source position reconstruction and constraints on the galactic magnetic field from ultra-high energy cosmic rays
- Ultrahigh Energy Nuclei in the Galactic Magnetic Field
- Magnetic Deflections of Ultra-High Energy Cosmic Rays from Centaurus A
- The Nuclear Window to the Extragalactic Universe
- Searching for signals of magnetic lensing in ultra-high energy cosmic rays
- Investigation of the Galactic Magnetic Field with Ultra-High Energy Cosmic Rays
Cited by in corpus (4)
- Ultra-High-Energy Cosmic Rays: The Intersection of the Cosmic and Energy Frontiers
- UHECR mass composition at highest energies from anisotropy of their arrival directions
- Identification of Patterns in Cosmic-Ray Arrival Directions using Dynamic Graph Convolutional Neural Networks
- Towards extracting cosmic magnetic field structures from cosmic-ray arrival directions