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The interstellar medium is not necessary fully ionized. When a shock propagates into the partially ionized medium, some neutral particles leak into the upstream region from the downstream region. In t...
Mapping photodissociation and shocks in the vicinity of Sgr A*
astrochemistry – Galaxy abundances – Galaxy center – Galaxy
2010/11/16
Aims. We study the chemistry in the harsh environments of galactic nuclei using the nearest one, the Galactic center (GC).Methods. We have obtained maps of the molecular emission within the central fi...
The Role of Diffusive Shock Acceleration on Nonequilibrium Ionization in Supernova Remnant Shocks II: Emitted Spectra
High Energy Astrophysical Phenomena (astro-ph.HE)
2011/1/6
We present a grid of nonequilibrium ionization models for the X-ray spectra from supernova remnants undergoing efficient diffusive shock acceleration. The calculation follows the hydrodynamics of the ...
Computation of synthetic spectra from simulations of relativistic shocks
High Energy Astrophysical Phenomena (astro-ph.HE) Classical Physics (physics.class-ph)
2010/12/24
Particle-in-cell (PIC) simulations of relativistic shocks are in principle capable of predicting the spectra of photons that are radiated incoherently by the accelerated particles. The most direct met...
Cosmic-ray current driven turbulence in shocks with efficient particle acceleration: the oblique, long-wavelength mode instability
High Energy Astrophysical Phenomena (astro-ph.HE) Plasma Physics (physics.plasm-ph)
2010/12/23
In order for diffusive shock acceleration (DSA) to accelerate particles to high energies, the energetic particles must be able to interact with magnetic turbulence over a broad wavelength range.