JCMT observations of Soft Gamma-Ray Repeaters
Smith, I. A., Schultz, A. S. B., Hurley, K., Van Paradijs, J.,
and Waters, L. B. F. M.
The spectra of the quiescent counterparts to the Soft Gamma-Ray Repeaters
SGR 1900+14 and SGR 1806-20 peak in the infrared.
Their infrared spectra appear to contain several components:
the photospheric emission from star(s) dominates at shorter wavelengths,
a bright point source dominates at 25 microns, while an extended source
dominates at 60 microns.
However, we show here that these counterparts were not detected by the
James Clerk Maxwell Telescope at 450 microns or 800 microns.
These observations are consistent with other millimeter studies,
and are consistent with the detection of a point-like ``core''
to the radio nebula of SGR 1806-20.
We show that monoenergetic synchrotron radiation and black body spectra
are too broad to be consistent with both the infrared and submillimeter
observations.
However, simple dust models can explain the combined observations.
Status:
1997, A&A, 319, 923.
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