Space-VLBI phase-reference mapping and astrometry
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| Guirado Puerta, Jose Carlos; Ros Ibarra, Eduardo Perfil; Jones, D.L.; Lestrade, J.-F.; Marcaide Osoro, Juan María; Pérez Torres, Miguel Ángel; Preston, R.A. | |
| This document is a artículo publicadoDate2001 | |
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Este documento está disponible también en : http://hdl.handle.net/10550/12990 |
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| We present 5 GHz space-VLBI observations of the quasar pair B1342+662/B 1342+663 that demonstrate the feasibility of phase-reference techniques using an antenna in space. The space-based data were taken by the satellite HALCA, of the space-VLBI mission VSOP. From residual (referenced) phases we derive an upper bound of 10 meters to the uncertainty of the spacecraft orbit reconstruction. An analysis of the phase-reference maps of the sources additionally suggests that the above mentioned uncertainty is likely not larger than 3 meters. With errors of this magnitude, HALCA is a useful tool for astrometric studies of close pairs of radio sources. | |
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GUIRADO PUERTA, Jose Carlos ; Ros, E. ; Jones, D.L. ; Lestrade, J.F. ; Marcaide Osoro, Juan María ; Pérez Torres, Miguel Ángel ; Preston, R.A., 2001, Space-VLBI phase-reference mapping and astrometry, Astronomy and Astrophysics, vol. 371, no. 2, p. 766-770 |
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| http://www.aanda.org/index.php?option=article&access=standard&Itemid=129&url=/articles/aa/pdf/2001/20/aa1041.pdf |