Tests of general relativity with new detections of gravitational waves
Grant number: | 12/14132-3 |
Support Opportunities: | Research Grants - Young Investigators Grants |
Field of knowledge: | Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields |
Principal Investigator: | Riccardo Sturani |
Grantee: | Riccardo Sturani |
Host Institution: | Instituto de Física Teórica (IFT). Universidade Estadual Paulista (UNESP). Campus de São Paulo. São Paulo , SP, Brazil |
Associated research grant(s): | 14/50259-3 - Testing fundamental gravity and validating gravitational waveforms,
AP.R 14/50727-7 - Gravitational wave astronomy, AP.R 14/50128-6 - Exploring neutron stars interiors with gravitational waves, AP.R |
Associated scholarship(s): | 13/04538-5 - Gravitational Wave Research, BP.JP |
Abstract
Gravitational waves are propagating ripples in space-time geometry, produced by the coherent, rapid motion of massive astrophysical objects or by cosmological sources. Earth-based gravitational wave observatories have been active until recently and they will resume data taking in few years time. The inspirals and coalescences of binary systems that include black holes and neutron stars are among the most promising and interesting sources of gravitational waves; but the efficiency and ultimate success of searches depends on the availability of faithful waveforms and of powerful detection algorithms. The accuracy of analytical signal modeling is crucial for both detection and faithful parameter estimation. I plan to improving on the waveforms currently used for experimental searches and their implementation in search routines with a multi-fold effort: (i) employing techniques from effective field theory to improve the analytic description of binary inspirals within the Post-Newtonian approximation to Einstein's equations; (ii) constructing phenomenological waveforms that describe the entire inspiral and coalescence process for generically spinning systems, by calibrating analytical models with numerical simulations; (iii) developing tools to search for deviations from General Relativity; (iv) developing fast algorithms able to perform more intensive searches on the data. (AU)
Articles published in Agência FAPESP Newsletter about the research grant: |
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