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SPACE VLBI PROJECT

  • MURATA YASUHIRO (Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency)
  • Published : 2005.06.01

Abstract

The first Space-VLBI project, VSOP, started successfully with the launch of the dedicated space-VLBI satellite HALCA in 1997. The project has been in scientific operation in the 1.6 GHz and 5 GHz bands, and studies have been done mainly of the jet phenomena related to active galactic nuclei. A second generation space- VLBI project, VSOP-2, has been planned by the working group formed at ISAS/JAXA with many collaborators. The spacecraft is planned to observe in the 8, 22 and 43 GHz bands with cooled receivers for the two higher bands, and with a maximum angular resolution at 43 GHz (7 mm) of about 40 micro-arcseconds. The VSOP-2 satellite will also have the capability of the phase-reference and full polarization observations, which will produce more powerful results than those of the VSOP project. Far-future space-VLBI projects following VSOP and VSOP-2, have a large potential to achieve enough resolution and sensitivity to satisfy astronomers in future.

Keywords

Space mission;VLBI;radio telescope;international collaboration

References

  1. Hirabayashi, H. et al. , 1998, Science, 281, 1825, (erratum 282, 1995, 1998) https://doi.org/10.1126/science.281.5379.998
  2. Hirabayashi, H. et al. , 2000a, PASJ, 52, 955 https://doi.org/10.1093/pasj/52.6.955
  3. Hirabayashi, H. et al. , 2000b, PASJ, 52, 997 https://doi.org/10.1002/app.1994.070520718
  4. Hirabayashi, H. et al. , 2000c, in Astrophysical Phenomena Revealed by Space VLBI, eds. H. Hirabayashi, P.G. Edwards, & D.W. Murphy (ISAS, Sagamihara), 277
  5. Hirabayashi, H. et al. , 2001, in Galaxies and their' Constituents at the Highest Angular Resolutions (IAU Symposium 205), eds. R.T. Schilizzi, S.N. Vogel, F. Paresce and M. Elvis (ASP, San Francisco), 428
  6. Horiuchi, S. et al. , 2004, ApJ, 616, 110 https://doi.org/10.1086/424811
  7. Kobayashi, H. et al. , 2000a, PASJ, 52, 967 https://doi.org/10.1093/pasj/52.6.967
  8. Kobayashi, H. et al. , 2000b, in Astrophysical Phenomena Revealed by Space VLBI, eds. H. Hirabayashi, P.G. Edwards and D.W. Murphy (ISAS, Sagamihara),109
  9. Lovell, J.E.J. et al. ,2004, ApJS, 155, 27 https://doi.org/10.1086/424820
  10. Scott, W.K. et al. , 2004, ApJS, 155, 33 https://doi.org/10.1086/424819
  11. Wajima, K. et al. , 2002, in Fifth International Workshop on Radiation Effects on Semiconductor Devices for Space Application
  12. Wu, S.-C., & Bar-Sever, Y., 2001, in ION GPS 2001 14th International Technical Meeting of the Satellite Division of the Institute of Navigation, 2272
  13. Levy, G. S. et al. , 1986, Science, 234, 187 https://doi.org/10.1126/science.234.4773.187

Cited by

  1. Radiation Testing of Consumer High-Speed LSI Chips for the Next Space VLBI Mission vol.59, pp.6, 2007, https://doi.org/10.1093/pasj/59.6.1221