Other
Scientific paper
Sep 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop....4h&link_type=abstract
Spitzer Proposal ID #4
Other
Scientific paper
The Galactic center contains a number of unusual structures that manifest the physical extremes of the interstellar medium there. We use SIRTF to elucidate the physical conditions in several of these structures. The first is AFGL 5376, a remarkably bright and extended 25-micron source which appears to be a well-defined, large-scale, vertical shock associated with a radio continuum structure, the Galactic Center Lobe. We will detail the MIR structure and the spatial variation of the mid-infrared dust and ionized gas features across this object. The observations are intended to provide insights into both the shock kinematics as well as the nature of the dust in the ISM near the Galactic center. We also use the IRS to observe high excitation mid-IR atomic lines toward two other high energy features that are also likely to have resulted from activity unique to the Galactic center: Sgr AE and the radio "Streamers". Finally, high resolution spectral line observations of the putative sites of origin of the nonthermal radio filaments will provide constraints on the illuminating mechanism of these spectacular linear magnetic field lines.
Houck James R.
Uchida Keven
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