[4.15] Giga-bit/sec VLBI and e-VLBI

AAS 203rd Meeting, January 2004
Session 4 Computation, Data Handling and Image Analysis
Poster, Monday, January 5, 2004, 9:20am-6:30pm, Grand Hall

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[4.15] Giga-bit/sec VLBI and e-VLBI

A.R. Whitney, D.E. Lapsley, S.S. Doeleman (MIT Haystack Observatory)

Recent advances in hard-disk technology have enabled new generation disk-based VLBI recording systems capable of 1Gb/s data rates. These systems (Mark V) replace older magnetic tape systems at a small fraction of the cost, and use off-the-shelf disk components whose capacity is expected to grow dramatically in the future. In addition, these same platforms are compatible with transmitting VLBI data over high-speed networks (dubbed 'e-VLBI'), which allows for very fast turnaround of VLBI results. The sensitivity enhancements due to high bandwidth systems can significantly broaden the scientific scope of VLBI observations.

We explain the basics of this new VLBI technology, show results from technical experiments that use Mark5 systems and e-VLBI, and examine the future prospects for these technologies.

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