| | 54 | || '''24.07.2020[[BR]](11hrs, Zoom)''' || '''Fiona Kenny (NUI Galway)''' || '''Video-Link: !https://zoom.us/j/2521989441 [[BR]][[BR]]Simulation the laser beam propagation in LISA'''[[BR]][[BR]]Following from the success of LIGO and VIRGO, the Laser Interferometer Space Antenna (LISA) will be the first dedicated gravitational wave observatory in space. To be launched in 2034, it will comprise three identical spacecraft flying in equilateral triangle formation in an Earth-lagging orbit, and acting as a heterodyne interferometer with arm-lengths on the order of Mkm. Given that gravitational waves will cause picometer-level changes to the optical path length, accurate simulation of the propagation of light between the three LISA spacecraft will be a vital tool in determining the design of the telescopes in the constellation. In this talk Fiona Kenny will explain how LISA will work and her work developing a numerical software tool to carry out this task with the requisite accuracy and speed. Similar to ground based adaptive optics, she will describe the effects that an aberrated and jittering transmitting telescope have on the wavefront error and hence science limitations at the receiving telescope.[[BR]][[BR]]Presentation: English[[BR]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/AlteVortraege2020S1/2020-07-24_LISA.pdf Slides: English] [[BR]]Questions: German, English || |
