Gamma Rays from Molecular Clouds
arXiv:astro-ph/0012290 · doi:10.1023/A:1013845015364
Abstract
I discuss the spectral features of pi-0 decay gamma-radiation from clouds/targets located in proximity of relatively young proton accelerators, and speculate that such ``accelerator+target'' systems in our Galaxy can be responsible for a subset of unidentified EGRET sources. Also, I argue that the recent observations of high energy gamma-rays from the Orion complex contain evidence that the level of the ``sea'' of galactic cosmic rays may differ significantly from the flux and the spectrum of local (directly detected) particles.
The paper is based on presentations at 2 meetings of the workshop on "The Astrophysics of Galactic Cosmic Rays" hosted by the International Space Science Institute, Bern, October 1999 and May 2000; to be published in Space Science Reviews
References in corpus (1)
Cited by in corpus (34)
- Discovery of Very-High-Energy Gamma-Rays from the Galactic Centre Ridge
- Gamma rays from molecular clouds
- Radial distribution of the diffuse gamma-ray emissivity in the galactic disk
- Supernova remnants and gamma-ray sources
- Fine-structure in the nonthermal X-ray emission of SNR RX J1713.7-3946 revealed by Chandra
- Low-energy break in the spectrum of Galactic cosmic rays
- The Interaction of Cosmic Rays with Diffuse Clouds
- Probing Cosmic Rays in Nearby Giant Molecular Clouds with the Fermi Large Area Telescope
- Confinement-Driven Spatial Variations in the Cosmic Ray Flux
- Penetration of cosmic rays into dense molecular clouds: role of diffuse envelope
- Probing the "Sea" of Galactic Cosmic Rays with Fermi-LAT
- Molecular Clouds as Cosmic-Ray Barometers
- Gamma-ray observations of the Orion Molecular Clouds with the Fermi Large Area Telescope
- Fermi-LAT observations of the Sagittarius B complex
- On particle acceleration and transport in plasmas in the Galaxy: theory and observations
- Hadronic processes within collective stellar winds
- Jets and gamma-ray emission from isolated accreting black holes
- Search for TeV gamma ray emission from the Andromeda galaxy
- Effective Shielding of 10 GeV Cosmic Rays from Dense Molecular Clumps
- Runaway stars as cosmic ray injectors inside molecular clouds
- Probing the Sea of Cosmic Rays by Measuring Gamma-Ray Emission from Passive Giant Molecular Clouds with HAWC
- Cosmic rays and molecular clouds
- Electron and positron spectra in the three dimensional spatial-dependent propagation model
- High-Latitude Molecular Clouds as gamma-ray Sources for GLAST
- A Possible Hadronic Origin of TeV Photon Emission from SNR G106.3+2.7
- Comparative study of gamma-ray emission from molecular clouds and star-forming galaxies
- The star forming region Monoceros R2 as a gamma-ray source
- Collective effects of stellar winds and unidentified gamma-ray sources
- Probing local cosmic rays using Fermi-LAT observation of a mid-latitude region in the third Galactic quadrant
- Interaction of escaping cosmic rays with molecular clouds
- Nuclear de-excitation line emissions from giant molecular clouds
- Investigation of cosmic ray penetration with wavelet cross-correlation analysis
- The low cosmic-ray density in Polaris Flare
- Deciphering the spectral bumps of Galactic cosmic rays through gamma-ray observations of nearby molecular clouds