Understanding hadronic gamma-ray emission from supernova remnants

Abstract

We aim to test the plausibility of a theoretical framework in which the gamma-ray emission detected from supernova remnants may be of hadronic origin, i.e., due to the decay of neutral pions produced in nuclear collisions involving relativistic nuclei. In particular, we investigate the effects induced by magnetic field amplification on the expected particle spectra, outlining a phenomenological scenario consistent with both the underlying Physics and the larger and larger amount of observational data provided by the present generation of gamma experiments, which seem to indicate rather steep spectra for the accelerated particles. In addition, in order to study to study how pre-supernova winds might affect the expected emission in this class of sources, the time-dependent gamma-ray luminosity of a remnant with a massive progenitor is worked out. Solid points and limitations of the proposed scenario are finally discussed in a critical way.

30 pages, 5 figures; Several comments, references and a figure added. Some typos corrected

References in corpus (37)

• Fermi Large Area Telescope Bright Gamma-ray Source List
• Observations of the young supernova remnant RX J1713.7-3946 with the Fermi Large Area Telescope
• Milagro Observations of Multi-TeV Emission from Galactic Sources in the Fermi Bright Source List
• Observational constraints on energetic particle diffusion in young SNRs: amplified magnetic field and maximum energy
• HESS VHE Gamma-Ray Sources Without Identified Counterparts
• H.E.S.S. observations of the supernova remnant RX J0852.0-4622: shell-type morphology and spectrum of a widely extended VHE gamma-ray source
• A kinetic approach to cosmic ray induced streaming instability at supernova shocks
• Discovery of TeV Gamma Ray Emission from Tycho's Supernova Remnant
• Non linear particle acceleration at non-relativistic shock waves in the presence of self-generated turbulence
• First detection of VHE gamma-rays from SN 1006 by H.E.S.S
• Gamma rays from molecular clouds illuminated by cosmic rays escaping from interacting supernova remnants
• Gamma rays from molecular clouds
• Theory of cosmic ray production in the supernova remnant RX J1713.7-3946
• Nonlinear Diffusive Shock Acceleration with Magnetic Field Amplification
• Dynamical Feedback of Self-generated Magnetic Fields in Cosmic Ray Modified Shocks
• Gamma ray emission from SNR RX J1713.7-3946 and the origin of galactic cosmic rays
• Discovery of a point-like very-high-energy gamma-ray source in Monoceros
• A revised catalogue of EGRET gamma-ray sources
• Fermi-LAT Study of Gamma-ray Emission in the Direction of Supernova Remnant W49B
• Modeling Bell's Non-resonant Cosmic Ray Instability
• The maximum momentum of particles accelerated at cosmic ray modified shocks
• Evidence For Particle Acceleration to the Knee of the Cosmic Ray Spectrum in Tycho's Supernova Remnant
• Beyond the myth of the supernova-remnant origin of cosmic rays
• Observations of the shell-type SNR Cassiopeia A at TeV energies with VERITAS
• AGILE detection of GeV gamma-ray emission from the SNR W28
• Exploring a SNR/Molecular Cloud Association Within HESS J1745-303
• Dynamical effects of self-generated magnetic fields in cosmic ray modified shocks
• A cosmic ray current driven instability in partially ionised media
• Tycho SN 1572: A Naked Ia Supernova Remnant without Associated Ambient Molecular Cloud
• Non-linear diffusive acceleration of heavy nuclei in supernova remnant shocks
• Diffusive Shock Acceleration in Test-Particle Regime
• The radio SNR G65.1+0.6 and its associated pulsar J1957+2831
• The influence of the Alfvénic drift on the shape of cosmic ray spectra in SNRs
• Arguments against a dominantly hadronic origin of the VHE radiation from the supernova remnant RX J1713-3946
• 3-D Model of Broadband Emission from Supernova Remnants Undergoing Non-linear Diffusive Shock Acceleration
• Discovery and follow-up studies of the extended, off-plane, VHE gamma-ray source HESS J1507-622
• The multi-band nonthermal emission from the supernova remnant RX J1713.7-3946

Cited by in corpus (30)

• The Origin of Galactic Cosmic Rays
• Astrophysical models for the origin of the positron "excess"
• Particle acceleration in winds of star clusters
• Kinetic Simulations of Cosmic-Ray-Modified Shocks II: Particle Spectra
• Kinetic Simulations of Cosmic-Ray-Modified Shocks I: Hydrodynamics
• Evolution of high-energy particle distribution in Supernova Remnants
• The diffuse $\gamma$-ray background is dominated by star-forming galaxies
• Massive star cluster origin for the galactic cosmic ray population at very-high energies
• Effect of Cosmic Rays on the Evolution and Momentum Deposition of Supernova Remnants
• High-energy emission from non-relativistic radiative shocks: application to gamma-ray novae
• On the Spectrum of Electrons Accelerated in Supernova Remnants
• Gamma rays from Fast Black-Hole Winds
• The radio continuum perspective on cosmic-ray transport in external galaxies
• Evidence for PeV Proton Acceleration from Fermi-LAT Observations of SNR G106.3+2.7
• Where are Milky Way's Hadronic PeVatrons?
• Emission from a Pulsar Wind Nebula: Application to the Persistent Radio Counterpart of FRB 121102
• Diffuse Galactic Gamma Rays at intermediate and high latitudes. I. Constraints on the ISM properties
• Diffuse Galactic Gamma Rays from Shock-Accelerated Cosmic Rays
• Exploring A Cosmic-Ray Origin of the Multi-wavelength Emission in M31
• Spatially resolved broad-band synchrotron emission from the non-thermal limbs of SN1006
• Microphysics of diffusive shock acceleration: impact on the spectrum of accelerated particles
• Hadronic versus leptonic origin of gamma-ray emission from supernova remnants
• Selected Topics in Cosmic Ray Physics
• Simulating TeV gamma-ray morphologies of shell-type supernova remnants
• Non-linear acceleration at supernova remnant shocks and the hardening in the cosmic ray spectrum
• Gamma-Ray Emission from Supernova Remnants and Surrounding Molecular Clouds
• CONGRuENTS (COsmic-ray, Neutrino, Gamma-ray and Radio Non-Thermal Spectra). I. A predictive model for galactic non-thermal emission
• Investigating starburst-driven neutrino emission from galaxies in the Great Observatories All-Sky LIRG Survey
• Distinct photon-ALP propagation modes
• Deciphering the spectral bumps of Galactic cosmic rays through gamma-ray observations of nearby molecular clouds