519 citations · 1.2k across the 8 of their papers we have counts for
8 papers
RadioAstron Observations of the Quasar 3C273: a Challenge to the Brightness Temperature Limit
Y. Y. Kovalev, N. S. Kardashev, K. I. Kellermann +17
Inverse Compton cooling limits the brightness temperature of the radiating plasma to a maximum of K. Relativistic boosting can increase its observed value, but apparent…
Near real-time astrometry for spacecraft navigation with the VLBA: A demonstration with the Mars Reconnaissance Orbiter and Odyssey
W. Max-Moerbeck, W. F. Brisken, J. D. Romney
We present a demonstration of near real-time spacecraft astrometry with the VLBA. We detect the X-band downlink signal from Mars Reconnaissance Orbiter and Odyssey with the VLBA an…
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…
DiFX2: A more flexible, efficient, robust and powerful software correlator
A. T. Deller, W. F. Brisken, C. J. Phillips +8
Software correlation, where a correlation algorithm written in a high-level language such as C++ is run on commodity computer hardware, has become increasingly attractive for small…
The Celestial Reference Frame at 24 and 43 GHz. II. Imaging
P. Charlot, D. A. Boboltz, A. L. Fey +10
We have measured the sub-milli-arcsecond structure of 274 extragalactic sources at 24 and 43 GHz in order to assess their astrometric suitability for use in a high frequency celest…
Sensitive VLBI Studies of the OH Megamaser Emission from IRAS 17208-0014
E. Momjian, J. D. Romney, C. L. Carilli +1
We present phase-referenced VLBI results on the radio continuum and the OH 18 cm megamaser emission from the Ultra-Luminous Infrared Galaxy, IRAS 17208--0014. The observations were…