H I absorption in the direction of galactic-plane variables Evidence for new, rapidly variable extragalactic radio sources

Details H I absorption in the direction of galactic-plane variables Evidence for new, rapidly variable extragalactic radio sources H I absorption in the direction of galactic-plane variables Evidence for new, rapidly variable extragalactic radio sources

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984aj.....89.1692t&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 89, Nov. 1984, p. 1692-1694.

Astronomy and Astrophysics

Astronomy

8

Absorption Spectra, Astronomical Spectroscopy, Extragalactic Radio Sources, H Lines, Centimeter Waves, Emission Spectra, Variability

Scientific paper

The authors have carried out H I absorption observations of three radio sources in the galactic plane that vary on time scales of a few days. The absorption spectra of all three sources contain components corresponding to the full range of H I emission velocities. Although the authors cannot strictly rule out a galactic origin, their results strongly suggest that these objects are rapidly variable extragalactic radio sources. One source, GT2100+468, is among the most highly variable of known extragalactic radio sources.

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