Mario Schenberg (Gravitational Wave Detector)
|Telescope style||gravitational-wave observatory|
The Mario Schenberg (Gravitational Wave Detector, or Brazilian Graviton Project or Graviton) is a spherical, resonant-mass, gravitational wave detector formerly run by the Physics Institute of the University of Sao Paulo, named after Mário Schenberg. Similar to the Dutch-run MiniGrail, the 1.15 ton, 65 cm diameter spherical test mass is suspended in a cryogenic vacuum enclosure, kept at 20 mK; and the sensors (transducers) for this detector/antenna are developed at the National Institute for Space Research (INPE), in Sao José dos Campos, Brazil. As of 2016, the antenna has not detected any gravitational waves, and development of the antenna continues. It has been decided that the antenna will be transferred from the University of Sao Paulo to INPE. 
- Aguiar; et al. (October 2002). "The status of the Brazilian spherical detector". Class. Quantum Grav. 19 (1949): 1949–1953. Bibcode:2002CQGra..19.1949A. doi:10.1088/0264-9381/19/7/397.
- Aguiar; et al. (April 2005). "The Brazilian gravitational wave detector Mario Schenberg: progress and plans". Class. Quantum Grav. 22 (10): S209–S214. Bibcode:2005CQGra..22S.209A. CiteSeerX 10.1.1.497.325. doi:10.1088/0264-9381/22/10/011.
- Aguiar; et al. (May 2008). "The Schenberg spherical gravitational wave detector: the first commissioning runs". Class. Quantum Grav. 25 (11): 114042. Bibcode:2008CQGra..25k4042A. doi:10.1088/0264-9381/25/11/114042.
- Aguiar; et al. (October 2016). "The Mario Schenberg Gravitational Wave Antenna". Brazilian Journal of Physics. 46 (5): 596–603. doi:10.1007/s13538-016-0436-1.