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The Pearson-Readhead Survey from SpaceThe VSOP Space VLBI mission uses the HALCA spacecraft, launched from Japan in February 1997, in conjunction with ground radio observatories around the world to create a high resolution radio-wave length imaging facility. We are using this unique facility to observe a complete sample of Pearson-Readhead Survey sources at 4.8 GHz to determine core brightness temperatures and pc-scale jet properties. The Pearson-Readhead sample has been used for extensive ground-based VLBI survey studies. This sample is ideal for a VSOP survey because the sources are strong, the VSOP u-v coverages are especially good above +350 declination, and multi-epoch ground-based VLBI data and other existing supporting data on these sources exceeds that of any other possible sample. We have chosen to observe a complete subset of this sample that is most likely to show fringes on space-earth baselines. To date we have imaged a majority of the 31 sources in our sample. In addition, we are obtaining matched- resolution 15 GHz observations using the VLBA at epochs close in time to the space VLBI observations to investigate the spectral indices of the source components at high resolution. We gratefully acknowledge the VSOP Project, which is led by the Japanese Institute of Space and Astronautical Science in cooperation with many organizations and radio telescopes around the world. This research was performed in part at the Jet Propulsion Laboratory, California Institute of Technology, under contract to NASA.
Document ID
20000074261
Acquisition Source
Jet Propulsion Laboratory
Document Type
Other
Authors
Preston, R. A.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA United States)
Tingay, S. J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA United States)
Jones, D. L.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA United States)
Lister, M.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA United States)
Piner, G.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA United States)
Murphy, D. W.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA United States)
Meier, D. L.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA United States)
Pearson, T. J.
(California Inst. of Tech. United States)
Readhead, A. C. S.
(California Inst. of Tech. United States)
Hirabayashi, H.
(Tokyo Univ. Japan)
Kobayashi, H.
(Tokyo Univ. Japan)
Inoue, M.
(Nobeyama Radio Observatory Nobeyama, Japan)
Date Acquired
August 19, 2013
Publication Date
January 1, 1988
Subject Category
Earth Resources And Remote Sensing
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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