Physics
Scientific paper
Apr 1970
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1970natur.226..134o&link_type=abstract
Nature, Volume 226, Issue 5241, pp. 134-135 (1970).
Physics
6
Scientific paper
MANY data have recently become available concerning an extended infrared source near the centre of our galaxy1-4. Although the precise angular extent of this source is not yet certain, a dimension, of ~1 pc has been suggested for the 10 µm radiation3,4, and ~100 pc for the 100 µm radiation2. The shape of the infrared spectrum is now fairly well known, particularly over the waveband 5-22 µm. The flux determination at 100 µm is somewhat less certain, while only an upper limit is available for the flux at 1,000 µm. It is readily seen from the data of Low et al.4 that the spectrum of the galactic centre source in the range 5-22 µm bears a striking resemblance to that of several Seyfert nuclei5. This similarity strongly suggests that similar radiation mechanisms may operate in both cases.
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