MHD simulations of proton- versus lepton-dominated cosmic rays in nonthermal filaments show minimal observable differences and motivate a turbulence-based formation scenario for Galactic Center NTFs.
High-Resolution, Wide-Field Imaging of the Galactic Center Region at 330 MHz
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abstract
We present a wide field, sub-arcminute resolution VLA image of the Galactic Center region at 330 MHz. With a resolution of ~ 7" X 12" and an RMS noise of 1.6 mJy/beam, this image represents a significant increase in resolution and sensitivity over the previously published VLA image at this frequency. The improved sensitivity has more than tripled the census of small diameter sources in the region, has resulted in the detection of two new Non Thermal Filaments (NTFs), 18 NTF candidates, 30 pulsar candidates, reveals previously known extended sources in greater detail, and has resulted in the first detection of Sagittarius A* in this frequency range. A version of this paper containing full resolution images may be found at http://lwa.nrl.navy.mil/nord/AAAB.pdf.
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The Effects of Cosmic Ray Protons on Galactic Nonthermal Filaments
MHD simulations of proton- versus lepton-dominated cosmic rays in nonthermal filaments show minimal observable differences and motivate a turbulence-based formation scenario for Galactic Center NTFs.