Now showing items 1-7 of 7

    • Computation of schenberg response function by using finite element modelling 

      Frajuca, C.; Bortoli, F. S.; Magalhaes, N. S. [UNIFESP] (Univ Federal Ceara, Centro Ciencias Agrarias, 2016)
      Schenberg is a detector of gravitational waves resonant mass type, with a central frequency of operation of 3200 Hz. Transducers located on the surface of the resonating sphere, according to a distribution half-dodecahedron, ...
    • Data Analysis of Monochromatic Signals from ALLEGRO GW Detector 

      Oliveira, F. G.; Marinho, R. M.; Magalhaes, N. S. [UNIFESP]; Aguiar, O. D.; Frajuca, C.; Pires, R. (Elsevier B.V., 2010-02-01)
      We have analyzed ALLEGRO's data for the year 1997 searching for monochromatic gravitational wave (GW) signals. for this, we had to take into account the Doppler shift; effect caused by the rotation and translation of the ...
    • How to overcome limitations of analytic solutions when determining the direction of a gravitational wave using experimental data: an example with the schenberg detector 

      Costa, C. F. S.; Magalhaes, N. S. [UNIFESP] (Hospital Clinicas, Univ Sao Paulo, 2016)
      It has been commonly assumed that analytic solutions can efficiently provide the direction of a gravitational wave (GW) once sufficient data is available from gravitational wave detectors. Nevertheless, we identified that ...
    • Mass density and size estimates for spiral galaxies using general relativity 

      Magalhaes, N. S. [UNIFESP]; Cooperstock, F. I. (Springer, 2017)
      Rotation curves of spiral galaxies reveal a physical phenomenon that has been seen to lack a satisfactory scientific explanation: velocities of stars far from the nucleus are high and approximately constant. In the context ...
    • Progress and challenges in advanced ground-based gravitational-wave detectors 

      Adier, M.; Aguilar, F.; Akutsu, T.; Arain, M. A.; Ando, M.; Anghinolfi, L.; Antonini, P.; Aso, Y.; Barr, B. W.; Barsotti, L.; Beker, M. G.; Bell, A. S.; Bellon, L.; Bertolini, A.; Blair, C.; Blom, M. R.; Bogan, C.; Bond, C.; Bortoli, F. S.; Brown, D.; Buchler, B. C.; Bulten, H. J.; Cagnoli, G.; Canepa, M.; Carbone, L.; Cesarini, E.; Champagnon, B.; Chen, D.; Chincarini, A.; Chtanov, A.; Chua, S. S. Y.; Ciani, G.; Coccia, E.; Conte, A.; Cortese, M.; Daloisio, M.; Damjanic, M.; Day, R. A.; De Ligny, D.; Degallaix, J.; Doets, M.; Dolique, V.; Dooley, K.; Dwyer, S.; Evans, M.; Factourovich, M.; Fafone, V.; Farinon, S.; Feldbaum, D.; Flaminio, R.; Forest, D.; Frajuca, C.; Frede, M.; Freise, A.; Fricke, T.; Friedrich, D.; Fritschel, P.; Frolov, V. V.; Fulda, P.; Geitner, M.; Gemme, G.; Gleason, J.; Gossler, S.; Gordon, N.; Graef, C.; Granata, M.; Gras, S.; Gross, M.; Grote, H.; Gustafson, R.; Hanke, M.; Heintze, M.; Hennes, E.; Hild, S.; Huttner, S. H.; Ishidoshiro, K.; Izumi, K.; Kawabe, K.; Kawamura, S.; Kawazoe, F.; Kasprzack, M.; Khalaidovski, A.; Kimura, N.; Koike, S.; Kume, T.; Kumeta, A.; Kuroda, K.; Kwee, P.; Lagrange, B.; Lam, P. K.; Landry, M.; Leavey, S.; Leonardi, M.; Li, T.; Liu, Z.; Lorenzini, M.; Losurdo, G.; Lumaca, D.; Macarthur, J.; Magalhaes, N. S. [UNIFESP]; Majorana, E.; Malvezzi, V.; Mangano, V.; Mansell, G.; Marque, J.; Martin, R.; Martynov, D.; Mavalvala, N.; McClelland, D. E.; Meadors, G. D.; Meier, T.; Mermet, A.; Michel, C.; Minenkov, Y.; Mow-Lowry, C. M.; Mudadu, L.; Mueller, C. L.; Mueller, G.; Mul, F.; Kumar, D. Nanda; Nardecchia, I.; Naticchioni, L.; Neri, M.; Niwa, Y.; Ohashi, M.; Okada, K.; Oppermann, P.; Pinard, L.; Poeld, J.; Prato, M.; Prodi, G. A.; Puncken, O.; Puppo, P.; Quetschke, V.; Reitze, D. H.; Risson, P.; Rocchi, A.; Saito, N.; Saito, Y.; Sakakibara, Y.; Sassolas, B.; Schimmel, A.; Schnabel, R.; Schofield, R. M. S.; Schreiber, E.; Sequino, V.; Serra, E.; Shaddock, D. A.; Shoda, A.; Shoemaker, D. H.; Shibata, K.; Sigg, D.; Smith-Lefebvre, N.; Somiya, K.; Sorazu, B.; Stefszky, M. S.; Strain, K. A.; Straniero, N.; Suzuki, T.; Takahashi, R.; Tanner, D. B.; Tellez, G.; Theeg, T.; Tokoku, C.; Tsubono, K.; Uchiyama, T.; Ueda, S.; Vahlbruch, H.; Vajente, G.; Vorvick, C.; van den Brand, J. F. J.; Wade, A.; Ward, R.; Wessels, P.; Williams, L.; Willke, B.; Winkelmann, L.; Yamamoto, K.; Zendri, J. -P. (Springer, 2014-08-01)
      The Amaldi 10 Parallel Session C3 on Advanced Gravitational Wave detectors gave an overview of the status and several specific challenges and solutions relevant to the instruments planned for a mid-decade start of observation. ...
    • SEARCH for MONOCHROMATIC SIGNALS USING DATA FROM the ALLEGRO GRAVITATIONAL WAVE DETECTOR 

      Oliveira, F. G.; Marinho, R. M.; Pires, R.; Xavier, V. S.; Frajuca, C.; Magalhaes, N. S. [UNIFESP]; Aguiar, O. D. (World Scientific Publ Co Pte Ltd, 2010-08-01)
      We present a data analysis method for searching monochromatic signals in temporal series. With this method it is possible to estimate the power spectrum by using averaged modified periodograms which reinforce the presence ...
    • Thermal connection and vibrational isolation: an elegant solution for two problems 

      Frajuca, C.; Bortoli, F. S.; Magalhaes, N. S. [UNIFESP]; Aguiar, O. D. (Wiley-Blackwell, 2016)
      Schenberg is a detector of gravitational waves resonant mass type, with a central frequency of operation of 3200 Hz. Transducers located on the surface of the resonating sphere, according to a distribution half-dodecahedron, ...