4.1. Radio continuum and molecular gas in the Galactic center: large-scale structures
1998 ◽
Vol 184
◽
pp. 161-168
Keyword(s):
The radio emission from the Galactic Center is a mixture of thermal (free-free) and non-thermal (synchrotron) emissions (Fig. 1a). However, the spectral index in the central 3° region is flat almost everywhere (Sofue 1985), even in regions where strong linear polarization is detected. Therefore, a flat spectrum observed near the galactic center can no longer be taken as an indicator of thermal emission.