Astronomy and Astrophysics – Astronomy
Scientific paper
May 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002ivsg.conf..199m&link_type=abstract
International VLBI Service for Geodesy and Astrometry General Meeting Proceeding, p. 199
Astronomy and Astrophysics
Astronomy
Black Holes (Astronomy), Event Horizon, Radio Astronomy, Telescopes, Very Long Base Interferometry, Imaging Techniques, Millimeter Waves, Sagittarius Constellation, Submillimeter Waves, Schwarzschild Metric
Scientific paper
The existence of a black hole in the universe has become very clear and is now common sense in astronomy. But the direct image of a black hole showing relativistic phenomena around the event horizon was still beyond our reach at the previous century because the sizes of black holes are too small to observe. Sagittarius A* (SgrA*) is the closest massive black hole at our galactic center. The Schwarzschild radius of SgrA* is about 6 (micro)arcseconds. Early in the 21st century developments of VLBI (Very Long Baseline Interferometry) techniques and millimeter and sub-millimeter radio astronomy will soon reach the point to make such observations of black holes possible. We here propose to construct a new VLBI array that should be named the (Event) Horizon Telescope.
Kameno Seiji
Miyoshi Makoto
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