| Full text | |
| Author(s): Show less - |
Frajuca, C.
;
Pires, R.
;
Bortoli, F. S.
;
Melo, R. F.
;
Magalhaes, N. S.
;
Marinho, R. M., Jr.
;
Oliveira, F. G.
;
Aguiar, O. D.
;
Johnson, W. W.
;
Marka, Z
;
Marka, S
Total Authors: 11
|
| Document type: | Journal article |
| Source: | WAKE CONFERENCE 2021; v. 228, p. 5-pg., 2010-01-01. |
| Abstract | |
The detection of continuous gravitational wave (GW) signals is investigated using on a method developed for the detection of monochromatic signals in the middle of strong noise which makes power spectrum estimates using averaged modified periodograms. With this method it is possible to obtain a power spectrum for the data which preserves peaks due to monochromatic signals. In GW detection two kinds of Doppler shifts are expected, with annual and daily periods. Using the method an analysis is performed on persistent peaks, searching for frequency drifts that might present a pattern similar to the one due to Doppler shifts. For the chosen data set of the ALLEGRO gravitational wave detector it was found that none of the strongest, persistent peaks investigated presented a frequency drift with a Doppler shift pattern, thus excluding them as GW signal candidates. (AU) | |
| FAPESP's process: | 09/01067-6 - 8th Edoardo Amaldi Conference on Gravitational Waves |
| Grantee: | Carlos Frajuca |
| Support Opportunities: | Research Grants - Meeting - Abroad |
| FAPESP's process: | 06/56041-3 - New physics from space: gravitational waves |
| Grantee: | Odylio Denys de Aguiar |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 06/07316-0 - Signal analysis of astrophysical sources of gravitational waves and identification of theories of gravitation |
| Grantee: | Nadja Simão Magalhães |
| Support Opportunities: | Regular Research Grants |