NDLI: LISA : Laser Interferometer Space Antenna for gravitational wave measurements

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LISA : Laser Interferometer Space Antenna for gravitational wave measurements

Content Provider	Semantic Scholar
Author	Danzmann, Karsten Team, Lisa Study
Copyright Year	1995
Abstract	LISA (Laser Interferometer Space Antenna) is designed to observe gravitational waves from violent events in the Universe in a frequency range from to lo-' Hz which is totally inaccessible to ground based experiments. It uses highly stabilised laser light (Nd:YAG, A = 1.064 p m ) in a Michelson-type interferometer arrangement. A cluster of six spacecraft with two at each vertex of an equilateral triangle is placed in an Earth-like orbit at a distance of 1 AU from the Sun, and 20' behind the Earth. Three subsets of four adjacent spacecraft each form an interferometer comprising a central station, consisting of two relatively adjacent spacecraft (200 km apart) , and two spacecraft placed at a. distance of 5x lo6 k m from the centre t o form arms which make an angle of GO" with each other. Each spacecraft is equipped with a laser. A descoped LISA with only four spacecraft has undergone an ESA assessment s tudy in the M3 cycle, and the full 6-spacecra.ft LISA mission has now been selected as a. cornerstone in the ESA Horizon 2000-plus programme. The LISA Assessment Report is available as ESA document SC1(94)6, May 1994. Fig. 1. Configuration of a single LISA interferometer with four spacecraft. This earlier design of trapezoidal boxes was later changed into flat circular dislts, their axes normal to the interferometer plane, as indicated for a single ,spacecraft (with t op lid removed) on the righthand ,side.
Starting Page	481
Ending Page	484
Page Count	4
File Format	PDF HTM / HTML
DOI	10.1111/j.1749-6632.1995.tb17590.x
Alternate Webpage(s)	http://pubman.mpdl.mpg.de/pubman/item/escidoc:153127/component/escidoc:153126/372421.pdf
Alternate Webpage(s)	https://doi.org/10.1111/j.1749-6632.1995.tb17590.x
Volume Number	759
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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