High-resolution VLA images of the Galactic Centre at 2-cm wavelength with large dynamic range

Details High-resolution VLA images of the Galactic Centre at 2-cm wavelength with large dynamic range High-resolution VLA images of the Galactic Centre at 2-cm wavelength with large dynamic range

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991natur.354...46z&link_type=abstract

Nature (ISSN 0028-0836), vol. 354, Nov. 7, 1991, p. 46-48.

Astronomy and Astrophysics

Astronomy

12

Galactic Nuclei, Galactic Structure, Milky Way Galaxy, Very Large Array (Vla), Dynamic Range, Gray Scale, Maximum Entropy Method, Radio Astronomy, Radio Sources (Astronomy)

Scientific paper

The Galactic center has been observed using the VLA, obtaining images at 2 cm with resolution of about 0.1 arcsec. The rms noise of 70 micro-Jy per beam, with a dynamic range of 22,000:1, is comparable to that in Yusef-Zadeh et al. (1990), but the new structures reported by Yusef-Zadeh et al. do not appear in the present observations. Several ways that low-level artifacts near Sgr A* might have been generated are discussed. The presence of a plume of emission 1 arcsec southwest of Sgr A* is also confirmed.

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