caa a22 4500 469065303 CHVBK 20180323132907.0 cr unu---uuuuu 170328e19920601xx s 000 0 eng 10.1007/BF02723171 doi (NATIONALLICENCE)springer-10.1007/BF02723171 Faraoni V. International School for Advanced Studies, Strada Costiera 11, 34014, Trieste, Italia aut Theoretical problems on gravitational-wave detectors [Elektronische Daten] [V. Faraoni] Summary: We investigate the physical meaning of the observers (defined in a geometrical, coordinate-independent way) associated with the TT gauge and otherad hoc coordinate systems that are often used in the description of gravitational-wave detectors. TT observers undergo very complicated motions when seen by a freely falling observer; for most (but not all) kinds of detectors with sizel much smaller than the wavelength λ of the radiation to be detected, Fermi normal coordinates are the best. For detectors withl/λ≥1, there are tricky possibilities depending on the particular kind of device considered; we point out the difficulty of giving a clear, geometrical description of the family of fundamental observers associated with the detector. Società Italiana di Fisica, 1992 04.20 nationallicence General relativity nationallicence 04.80 nationallicence Experimental tests of general relativity and observations of gravitational radiation nationallicence Il Nuovo Cimento B (1971-1996) Società Italiana di Fisica 107/6(1992-06-01), 631-642 107:6<631 1992 107 40764 https://doi.org/10.1007/BF02723171 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02723171 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Faraoni V. International School for Advanced Studies, Strada Costiera 11, 34014, Trieste, Italia aut NATIONALLICENCE 773 0- Il Nuovo Cimento B (1971-1996) Società Italiana di Fisica 107/6(1992-06-01), 631-642 107:6<631 1992 107 40764 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer