NASA NTRS · 19850050011
Quasar 4C39.25 is not contracting
Abstract
A map has been made of the quasar 4C39.25, which has been described as consisting of two components whose angular separation remains constant at about 2 marc-sec, using VLBI observations made at 3.6 cm during 1983. From the map it is concluded that Shaffer's (1984) suggestion that this source may have been contracting superluminally during 1979-82 is not correct. Three distinct components are found in the quasar structure, two separated by 2.0 marc-sec and a third, presumably new and not previously reported, situated between the other two. It is possible either that the third component is stationary and that its flux density has rapidly increased to render it visible, or that it has recently been ejected from the westernmost component.
Keep this discovery
Explore connections, maps & timelines
Marcaide, J. M., Bartel, N., Gorenstein, M. V., Shapiro, I. I., Corey, B. E., Rogers, A. E. E., Webber, J. C., Clark, T. A., Romney, J. D., Preston, R. A.. 1985-04-04. Quasar 4C39.25 is not contracting. https://ntrs.nasa.gov/citations/19850050011
Cite the original work for its findings. Save a collection to share your selection of sources.