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Title: Transient radio source near the center of the Milky Way Galaxy
Authors: Zhao, J.H.
Roberts, D.A.
Goss, W.M.
Frail, D.A.
Lo, Y.K.
Subrahmanyan, Ravi
Keywords: galactic nuclei
infrared imagery
milky way galaxy
molecular clouds
radio sources (astronomy)
very large array
absorption spectra
Issue Date: Mar-1992
Publisher: American Association for the Advancement of Science
Citation: Science, 1992, Vol.225, p1538
Abstract: A new high-intensity radio source that appeared in late December 1990 near the center of the Galaxy is described. Following its first detection, the flux density of this Galactic-center transient (GCT) increased rapidly to a maximum a month later, and then declined gradually during the next 3 months. However, throughout its rising and decay phases, the GCT maintained a steep radio spectrum. Neutral-hydrogen-absorption and OH observations indicate that the GCT is either embedded in, or located behind, a molecular cloud moving with the velocity of +20 km/sec with respect to the local standard of rest. It is suggested that the GCT represents a transient radio emission from synchrotron-radiating plasma associated with an X-ray binary system
Description: Restricted Access.
ISSN: 0036-8075
1095-9203 (Online)
Alternative Location:
Copyright: 1992 American Association for the Advancement of Science
Appears in Collections:Research Papers (A&A)

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