Interaction between Molecular Clouds and MeV-TeV Cosmic-ray Protons Escaped from Supernova Remnants
arXiv:1901.10477 · doi:10.1093/pasj/psz058
Abstract
Recent discovery of the X-ray neutral iron line (Fe I Kαat 6.40 keV) around several supernova remnants (SNRs) show that MeV cosmic-ray (CR) protons are distributed around the SNRs and are interacting with neutral gas there. We propose that these MeV CRs are the ones that have been accelerated at the SNRs together with GeV-TeV CRs. In our analytical model, the MeV CRs are still confined in the SNR when the SNR collides with molecular clouds. After the collision, the MeV CRs leak into the clouds and produce the neutral iron line emissions. On the other hand, GeV-TeV CRs had already escaped from the SNRs and emit gamma-rays through interaction with molecular clouds surrounding the SNRs. We apply this model to the SNRs W28 and W44 and show that it can reproduce the observations of the iron line intensities and the gamma-ray spectra. This can be another support of a hadronic scenario for the gamma-ray emissions from these SNRs.
arXiv commentMatches the version published on PASJ
References in corpus (35)
- Detection of the Characteristic Pion-Decay Signature in Supernova Remnants
- Parameterization of Gamma, e^+/- and Neutrino Spectra Produced by p-p Interaction in Astronomical Environment
- Broad-band nonthermal emission from molecular clouds illuminated by cosmic rays from nearby supernova remnants
- Discovery of very high energy gamma-ray emission coincident with molecular clouds in the W28 (G6.4-0.1) field
- Fermi-LAT Discovery of Extended Gamma-ray Emission in the Direction of Supernova Remnant W51C
- Polarization Observations of 1720 MHz OH Masers toward the Three Supernova Remnants W28, W44, and IC443
- On the spectrum of high-energy cosmic rays produced by supernova remnants in the presence of strong cosmic-ray streaming instability and wave dissipation
- Fermi LAT Observations of the Supernova Remnant W28 (G6.4-0.1)
- Nonthermal Emission from a Supernova Remnant in a Molecular Cloud
- Gamma-ray Emission from Crushed Clouds in Supernova Remnants
- Escape-limited Model of Cosmic-ray Acceleration Revisited
- Gamma rays from molecular clouds illuminated by accumulated diffusive protons from supernova remnant W28
- Investigation of the large-scale neutral hydrogen near the supernova remnant W28
- Molecular Clouds as a Probe of Cosmic-Ray Acceleration in a Supernova Remnant
- Nonthermal X-rays from low-energy cosmic rays: Application to the 6.4 keV line emission from the Arches cluster region
- Theoretical uncertainties in extracting cosmic-ray diffusion parameters: the boron-to-carbon ratio
- Detailed Investigation of the Gamma-Ray Emission in the Vicinity of SNR W28 with FERMI-LAT
- The Supernova Remnant W44: confirmations and challenges for cosmic-ray acceleration
- Secondary antiprotons as a Galactic Dark Matter probe
- Modeling Bright Gamma-ray and Radio Emission at Fast Cloud Shocks
- The supernova remnant W44: a case of cosmic-Ray reacceleration
- A search for TeV gamma-ray emission from SNRs, pulsars and unidentified GeV sources in the Galactic plane in the longitude range between -2 deg and 85 deg
- Evidence for a neutral iron line generated by MeV protons from supernova remnants interacting with molecular clouds
- Slow Diffusion of Cosmic-Rays around a Supernova Remnant
- Parameterization of the Angular Distribution of Gamma Rays Produced by p-p Interaction in Astronomical Environment
- Discovery of Recombining Plasma in the Supernova Remnant 3C 391
- Alfven Wave Amplification and Self-Containment of Cosmic-Rays Escaping from a Supernova Remnant
- Cosmic-ray-induced ionization in molecular clouds adjacent to supernova remnants - Tracing the hadronic origin of GeV gamma radiation
- The Origin of Recombining Plasma and the Detection of the Fe-K Line in the Supernova Remnant W28
- Leaked GeV CRs from a broken shell: Explaining 9 years Fermi-LAT data of SNR W28
- Suzaku spectra of a Type II Supernova Remnant Kes 79
- Gamma-Ray Emission from Supernova Remnant Interaction with Molecular Clumps
- Gamma-ray emission from middle-aged supernova remnants interacting with molecular clouds: the challenge for current models
- Discovery of 6.4 keV line and soft X-ray emissions from G323.71.0 with Suzaku
- Diffusion of Cosmic Rays in a Multiphase Interstellar Medium Swept-Up by a Supernova Remnant Blast Wave
Cited by in corpus (9)
- Exploring the hadronic origin of LHAASO J1908+0621
- LMC N132D: A mature supernova remnant with a power-law gamma-ray spectrum extending beyond 8 TeV
- Neutral iron line in the supernova remnant IC 443 and implications for MeV cosmic rays
- Supernova connection of unidentified ultra high energy gamma-ray source LHAASO J2108+5157
- Intrusion of MeV-TeV Cosmic-Rays into Molecular Clouds Studied by Ionization, the Neutral Iron Line, and Gamma-Rays
- Dissecting the emission from LHAASO J0341+5258: implications for future multi-wavelength observations
- Probing Cosmic Rays with Fe K Line Structures Generated by Multiple Ionization Process
- The Gamma-Ray Emission from the Supernova Remnant RX J1713.7-3946 Interacting with Two-phase Medium
- Suzaku Observations of Fe K-shell Lines in the Supernova Remnant W51C and Hard X-ray Sources in the Proximity