Physics – Space Physics
Scientific paper
2011-10-20
Physics
Space Physics
20 pages, 4 figures
Scientific paper
High angular resolution radio continuum images of NGC 1976 (M42, Orion A) at frequency=330 MHz (wavelength=91 cm), 1.5 GHz (20 cm) and 10.6 GHz (2.8 cm), have been aligned, placed on a common grid, smoothed to common resolutions of 80" (=0.16 pc at 420 pc) and 90" (=0.18 pc) and compared on a position-by-position basis. The results are not consistent with a single value of Te. Rather, there is a significant variation, from Te =6000K in the low intensity, extended region to Te=8500K in the higher intensity, more compact region. The best fit to the data is a multi-layer model obtained from radio recombination line (RRL) data. An estimate of temperature fluctuations from the model yields t2=0.003. This is a factor of 10 lower than fluctuation values from optical O++ line data.
Casassus Simon
Chynoweth Katie M.
Wilson Thomas L.
No associations
LandOfFree
The Structure of NGC 1976 in the Radio Range does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Structure of NGC 1976 in the Radio Range, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Structure of NGC 1976 in the Radio Range will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-551748