276 citations · 401 across the 6 of their papers we have counts for
6 papers
RadioAstron -- a Telescope with a Size of 300 000 km: Main Parameters and First Observational Results
N. S. Kardashev, V. V. Khartov, RadioAstron collaboration
The Russian Academy of Sciences and Federal Space Agency, together with the participation of many international organizations, worked toward the launch of the RadioAstron orbiting…
Scientific Results from High-precision Astrometry at the Palomar Testbed Interferometer
Matthew W. Muterspaugh, Benjamin F. Lane, Maciej Konacki +4
A new observing mode for the Palomar Testbed Interferometer was developed in2002-2003 which enables differential astrometry at the level of 20 micro-arcseconds for binary systems w…
The Radio Wavelength Time Delay of Gravitational Lens 0957+561
Deborah B. Haarsma, Jacqueline N. Hewitt, Joseph Lehár +1
The gravitational lens 0957+561 was monitored with the Very Large Array from 1979 to 1997. The 6 cm light curve data from 1995-1997 and the 4 cm data from 1990-1997 are reported he…
Low Surface Brightness Radio Structure in the Field of Gravitational Lens 0957+561
I. M. Avruch, A. S. Cohen, J. Lehar +3
We have produced deep radio maps of the double quasar 0957+561 from multiple-epoch VLA observations. To achieve high sensitivity to extended structure we have re-reduced the best a…
The Gravitationally-Lensed Radio Source MG0751+2716
J. Lehar, B. F. Burke, S. R. Conner +6
We report the discovery of a new gravitationally lensed radio source. Radio maps of MG0751+2716 show four lensed images, which, at higher resolution, are resolved into long arcs of…
The 6 cm Light Curves of B0957+561, 1979-1994: New Features and Implications for the Time Delay
Deborah B. Haarsma, Jacqueline N. Hewitt, Joseph Lehár +1
We report on 15 years of VLA monitoring of the gravitational lens B0957+561 at 6 cm. Since our last report in 1992, there have been 32 additional observations, in which both images…