The following document lists the file abstract/DGREEN_3C58_MAP.abs
from catalogue VI/111.
A plain copy of the file
(without headers/trailers) may be downloaded.
We propose observations to determine the infrared flux density of the supernova remnant 3C58. This is a "filled-centre" remnant, with a flat synchrotron spectrum at radio wavelengths, but with indications of a spectral turnover at wavelengths less than a few mm from the available (IRAS) infrared upperlimits. Such a spectral turnover is either intrinsic to the emission mechanism at work in this object (presumably produced by a central, as yet unidentified pulsar: cf. the Crab Nebula), or is due to synchrotron losses, with little current energy input. Deeper infrared observations will determine the position and form of the spectral turnover, which in turn constrains the particle acceleration mechanisms at work.