Excesses of Cosmic Ray Spectra from A Single Nearby Source

Abstract

Growing evidence reveals universal hardening on various cosmic ray spectra, e.g. proton, positron, as well as antiproton fraction. Such universality may indicate they have a common origin. In this paper, we argue that these widespread excesses can be accounted for by a nearby supernova remnant surrounded by a giant molecular cloud. Secondary cosmic rays ($\mathrm{p}$, ${\mathrm{e}}^{+}$) are produced through the collisions between the primary cosmic ray nuclei from this supernova remnant and the molecular gas. Different from the background, which is produced by the ensemble of large amount of sources in the Milky Way, the local injected spectrum can be harder. The time-dependent transport of particles would make the propagated spectrum even harder. Under this scenario, the anomalies of both primary ($\mathrm{p}$, ${\mathrm{e}}^{-}$) and secondary (${\mathrm{e}}^{+}$, $\bar{\mathrm{p}}/p$) cosmic rays can be properly interpreted. We further show that the TeV to sub-PeV anisotropy of proton is consistent with the observations if the local source is relatively young and lying at the anti-Galactic center direction.

arXiv comment10 pages, 6 figures

References in corpus (64)

• Observation of an anomalous positron abundance in the cosmic radiation
• Cosmic-ray propagation and interactions in the Galaxy
• Measurement of the Cosmic Ray e+ plus e- spectrum from 20 GeV to 1 TeV with the Fermi Large Area Telescope
• PAMELA Measurements of Cosmic-ray Proton and Helium Spectra
• Radioactive 26Al and massive stars in the Galaxy
• Fermi-LAT Observations of the Diffuse Gamma-Ray Emission: Implications for Cosmic Rays and the Interstellar Medium
• Model-independent implications of the e+, e-, anti-proton cosmic ray spectra on properties of Dark Matter
• Pulsars as the Sources of High Energy Cosmic Ray Positrons
• Discrepant hardening observed in cosmic-ray elemental spectra
• Energy Spectra of Abundant Nuclei of Primary Cosmic Rays from the Data of ATIC-2 Experiment: Final Results
• TeV Gamma Rays from Geminga and the Origin of the GeV Positron Excess
• Cosmic-Ray Proton and Helium Spectra from the First CREAM Flight
• Constraints on cosmic-ray propagation models from a global Bayesian analysis
• Cosmic-Ray Nuclei, Antiprotons and Gamma-rays in the Galaxy: a New Diffusion Model
• Cosmic-ray positron fraction measurement from 1 to 30 GeV with AMS-01
• The origin of the positron excess in cosmic rays
• New Positron Spectral Features from Supersymmetric Dark Matter - a Way to Explain the PAMELA Data?
• Spectral breaks as a signature of cosmic ray induced turbulence in the Galaxy
• The Most Likely Sources of High Energy Cosmic-Ray Electrons in Supernova Remnants
• New Measurement of the Cosmic-Ray Positron Fraction from 5 to 15 GeV
• PAMELA data and leptonically decaying dark matter
• Origin of the Cosmic Ray Spectral Hardening
• Diffusive propagation of cosmic rays from supernova remnants in the Galaxy. II: anisotropy
• Dark matter interpretation of recent electron and positron data
• Testing the Origin of High-Energy Cosmic Rays
• Diffusive propagation of cosmic rays from supernova remnants in the Galaxy. I: spectrum and chemical composition
• Astrophysical models for the origin of the positron "excess"
• PAMELA and dark matter
• Evolution of the cosmic ray anisotropy above 10^{14} eV
• Dissecting cosmic-ray electron-positron data with Occam's Razor: the role of known Pulsars
• Large-Scale Sidereal Anisotropy of Galactic Cosmic-Ray Intensity Observed by the Tibet Air Shower Array
• TeV Gamma-Rays from Old Supernova Remnants
• The History and Future of the Local and Loop I Bubbles
• AMS-02 antiprotons, at last! Secondary astrophysical component and immediate implications for Dark Matter
• Is the PAMELA anomaly caused by the supernova explosions near the Earth?
• The origin of the young stellar population in the solar neighborhood - a link to the formation of the Local Bubble?
• $e^{\pm }$ Excesses in the Cosmic Ray Spectrum and Possible Interpretations
• Quantitative study of the AMS-02 electron/positron spectra: implications for the pulsar and dark matter properties
• Indirect Searches for Dark Matter: a status review
• Searches for Cosmic-Ray Electron Anisotropies with the Fermi Large Area Telescope
• Discriminating different scenarios to account for the cosmic $e^{\pm }$ excess by synchrotron and inverse Compton radiation
• The origin of cosmic rays: Explosions of massive stars with magnetic winds and their supernova mechanism
• Nearby supernova remnants and the cosmic-ray spectral hardening at high energies
• New calculation of antiproton production by cosmic ray protons and nuclei
• GeV-TeV cosmic-ray spectral anomaly as due to re-acceleration by weak shocks in the Galaxy
• Proton-Helium Spectral Anomaly as a Signature of Cosmic Ray Accelerator
• Implications of the AMS-02 positron fraction in cosmic rays
• Constraining the origin of the rising cosmic ray positron fraction with the boron-to-carbon ratio
• Can we explain AMS-02 antiproton and positron excesses simultaneously by nearby supernovae without pulsars nor dark matter?
• Cosmic ray spectral hardening due to dispersion in the source injection spectra
• Observations of the Li, Be, and B isotopes and constraints on cosmic-ray propagation
• TeV cosmic-ray proton and helium spectra in the myriad model
• The Connection Between the Positron Fraction Anomaly and the Spectral Features in Galactic Cosmic-Ray Hadrons
• On the e${}^{+}$e${}^{-}$ excesses and the knee of the cosmic ray spectra -- hints of cosmic rays acceleration at young supernova remnants
• Upper limits on DM annihilation cross sections from the first AMS-02 antiproton data
• Revisiting the hardening of the cosmic-ray energy spectrum at TeV energies
• Wino Dark Matter in light of the AMS-02 2015 Data
• Variance of the Galactic nuclei cosmic ray flux
• A Brief Review on Dark Matter Annihilation Explanation for $e^{\pm }$ Excesses in Cosmic Ray
• Hypernova and Gamma-Ray Burst Remnants as TeV Unidentified Sources
• Limits on the Dark Matter from AMS-02 antiproton and positron fraction data
• Plus Charge Prevalence in Cosmic Rays: Room for Dark Matter in the Positron Spectrum
• Suzaku Observation of the Diffuse X-Ray Emission from the Open Cluster Westerlund 2: a Hypernova Remnant?
• TeV cosmic-ray proton and helium spectra in the myriad model II

Cited by in corpus (26)

• Measurement of the cosmic-ray proton spectrum from 40 GeV to 100 TeV with the DAMPE satellite
• AMS-100: The Next Generation Magnetic Spectrometer in Space -- An International Science Platform for Physics and Astrophysics at Lagrange Point 2
• Understanding the spectral hardenings and radial distribution of Galactic cosmic rays and Fermi diffuse gamma-rays with spatially-dependent propagation
• Revisit of cosmic ray antiprotons from dark matter annihilation with updated constraints on the background model from AMS-02 and collider data
• Revisiting Spatial-Dependent Propagation Model with Latest Observations of Cosmic Ray Nuclei
• Galactic Cosmic-Ray Anisotropy in the Northern hemisphere from the ARGO-YBJ Experiment during 2008-2012
• Anisotropies of different mass compositions of cosmic rays
• Implications on the origin of cosmic rays in light of 10 TV spectral softenings
• Interpretations of the cosmic ray secondary-to-primary ratios measured by DAMPE
• DAMPE proton spectrum indicates a slow-diffusion zone in the nearby ISM
• Cosmic ray $e^{+}{e}^{-}$ spectrum excess and peak feature observed by the DAMPE experiment from dark matter
• Geminga SNR: Possible candidate of local cosmic-ray factory
• Ultrahigh-energy diffuse gamma-ray emission from cosmic-ray interactions with medium surrounding acceleration sources
• Electron and positron spectra in the three dimensional spatial-dependent propagation model
• Statistically study the optimal local sources for cosmic ray nuclei and electron
• A Three-component Model for Cosmic-ray Spectrum and Dipole Anisotropy
• Possible bump structure of cosmic ray electrons unveiled by AMS-02 data and its common origin along with the nuclei and positron
• Two Numerical Methods for the 3D Anisotropic Propagation of Galactic Cosmic Rays
• Implications of dark matter cascade decay from DAMPE, HESS, Fermi-LAT and AMS02 data
• Evidence of fresh cosmic ray in galactic plane based on DAMPE measurement of B/C and B/O ratios
• Simplified dark matter models in the light of AMS-02 antiproton data
• Revisiting simplified dark matter models in terms of AMS-02 and Fermi-LAT
• Large-scale anisotropy of Galactic cosmic rays as a probe of local cosmic-ray propagation
• Examining the secondary product origin of cosmic ray positrons with the latest AMS-02 data
• Transport parameters from AMS-02 F/Si data and fluorine source abundance
• Research on electron and positron spectrum in the high-energy region based on the gluon condensation model