Numerical simulation of seismic waves in the regional and global earth with 3D Gaussian quadrature grids. The ability to realistically model the propagation of seismic waves through the global 3D earth, taking account of all internal and surface complexity, is extremely important for predicting the response to earthquakes and imaging the interior structure. This will lead to fundamental new knowledge on Earth constitution and heterogeneity, and will have spin-off benefits in others areas such as ....Numerical simulation of seismic waves in the regional and global earth with 3D Gaussian quadrature grids. The ability to realistically model the propagation of seismic waves through the global 3D earth, taking account of all internal and surface complexity, is extremely important for predicting the response to earthquakes and imaging the interior structure. This will lead to fundamental new knowledge on Earth constitution and heterogeneity, and will have spin-off benefits in others areas such as exploring for oil and minerals, and better understanding of seismic hazard. The numerical modelling and seismic data analysis will be done on a supercomputer, thus providing important training for research students. Read moreRead less
Seismic wave modelling and inversion for the most general 3-D anisotropic media. Advanced numerical techniques will be developed and applied to simulate the kinematic and dynamic properties of seismic wave propagation in a complex three-dimensional Earth, involving topography, heterogeneity and the most general anisotropy defined by 21 spatially-dependent elastic moduli. We will develop 2D/3D ray-tracing methods for anisotropic traveltime tomography, 2.5D/3D frequency-domain spectral element met ....Seismic wave modelling and inversion for the most general 3-D anisotropic media. Advanced numerical techniques will be developed and applied to simulate the kinematic and dynamic properties of seismic wave propagation in a complex three-dimensional Earth, involving topography, heterogeneity and the most general anisotropy defined by 21 spatially-dependent elastic moduli. We will develop 2D/3D ray-tracing methods for anisotropic traveltime tomography, 2.5D/3D frequency-domain spectral element methods for full waveform inversion of observational data, and make all these techniques applicable for subsurface imaging under various classes of anisotropy in the Earth. Results will be important for petroleum exploration as well as earthquake seismology and probing the structure of the Earth's deep interior.Read moreRead less
Ultra-sensitive third-generation gravitational wave detectors. Second-generation gravitational wave detectors that will directly detect gravitational waves for the first time are currently being assembled. Their sensitivity will be limited by intrinsic thermal motion of the atoms in the mirror coatings and the quantum nature of the laser beams in the detectors. This project aims to develop new designs with the aim of circumventing these limitations and developing the ultra-sensitive optical metr ....Ultra-sensitive third-generation gravitational wave detectors. Second-generation gravitational wave detectors that will directly detect gravitational waves for the first time are currently being assembled. Their sensitivity will be limited by intrinsic thermal motion of the atoms in the mirror coatings and the quantum nature of the laser beams in the detectors. This project aims to develop new designs with the aim of circumventing these limitations and developing the ultra-sensitive optical metrology required to realise those designs. It is expected that the increased sensitivity of these third-generation detectors will allow more detailed measurement of the gravitational wave signals and provide unprecedented understanding of some of the most violent events in the universe.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE110100129
Funder
Australian Research Council
Funding Amount
$550,000.00
Summary
Equipment and instrumentation for breaking the quantum measurement barrier. This equipment will support Australia's partnership in the international effort to detect gravitational waves, which would allow the first direct observation of black holes and mark the beginning of exploration of the gravitational wave spectrum.
Three-Mode interactions and optical springs in high power optical cavities. Gravitational waves are tiny vibrations of space and time which carry vast energy. They will allow the first direct observation of black holes. To make frequent detections this project will harness the force of intense laser light, and use this force to improve the sensitivity of gravitational wave detectors.
Discovery Early Career Researcher Award - Grant ID: DE230101035
Funder
Australian Research Council
Funding Amount
$368,818.00
Summary
Gravitational wave detectors for observing the Cosmic Dawn. This project aims to build upon Australia’s already pioneering research into the workings of the universe by addressing challenges facing future gravitational wave detectors. It will develop and utilise advanced new numerical models to generate new knowledge on large-scale precision interferometry and contribute towards the design of future detectors that are essential for gravitational wave astronomy to thrive. Expected outcomes are ne ....Gravitational wave detectors for observing the Cosmic Dawn. This project aims to build upon Australia’s already pioneering research into the workings of the universe by addressing challenges facing future gravitational wave detectors. It will develop and utilise advanced new numerical models to generate new knowledge on large-scale precision interferometry and contribute towards the design of future detectors that are essential for gravitational wave astronomy to thrive. Expected outcomes are new optimised designs for detectors and an array of innovative new open-source numerical models for exploring new designs of quantum optics experiments. This will benefit both Australian and international research teams in the global effort to realise the third generation of gravitational wave detectors.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE130100032
Funder
Australian Research Council
Funding Amount
$990,000.00
Summary
Australian partnership in advanced Laser Interferometer Gravitational-Wave Observatory (LIGO) - continuation. Advanced Laser Interferometer Gravitational-Wave Obervatory (LIGO) will be the first gravitational wave observatory capable of frequent observation of known sources of gravitational waves leading to the birth of gravitational wave astronomy. By playing a key role in this facility, Australia will reap the scientific rewards of being part of the most exciting frontier of physics in the 2 ....Australian partnership in advanced Laser Interferometer Gravitational-Wave Observatory (LIGO) - continuation. Advanced Laser Interferometer Gravitational-Wave Obervatory (LIGO) will be the first gravitational wave observatory capable of frequent observation of known sources of gravitational waves leading to the birth of gravitational wave astronomy. By playing a key role in this facility, Australia will reap the scientific rewards of being part of the most exciting frontier of physics in the 21st century.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE140100121
Funder
Australian Research Council
Funding Amount
$720,000.00
Summary
Equipment for International Collaboration in Gravitational Wave Detection. Equipment for international collaboration in gravitational wave detection: This project will allow the Australian Consortium for Gravitational Astronomy to install optical equipment at its dedicated research facility, and to install data analysis pipelines on new iVEC Pawsey Centre GPU-enabled supercomputers. The equipment is required for research aimed at stabilising instabilities in the new international gravitational w ....Equipment for International Collaboration in Gravitational Wave Detection. Equipment for international collaboration in gravitational wave detection: This project will allow the Australian Consortium for Gravitational Astronomy to install optical equipment at its dedicated research facility, and to install data analysis pipelines on new iVEC Pawsey Centre GPU-enabled supercomputers. The equipment is required for research aimed at stabilising instabilities in the new international gravitational wave detectors currently being commissioned in the USA and Europe. Real time data from the new detectors will be analysed using innovative new techniques. Scientists across Australia will be able to rapidly localise potential gravitational wave sources to direct robotic telescope observations. This could enable the first detection of gravitational waves.Read moreRead less
Instrumentation for the era of gravitational wave science. This project aims to study noise sources that limit the low-frequency performance of gravitational wave antenna: thermal noise, quantum radiation pressure noise and Newtonian noise. Gravitational wave detection is a new way in which to observe our universe. Although detectors such as advanced LIGO (Laser Interferometer Gravitational-Wave Observatory) should detect gravitational waves, further sensitivity improvement, particularly at low ....Instrumentation for the era of gravitational wave science. This project aims to study noise sources that limit the low-frequency performance of gravitational wave antenna: thermal noise, quantum radiation pressure noise and Newtonian noise. Gravitational wave detection is a new way in which to observe our universe. Although detectors such as advanced LIGO (Laser Interferometer Gravitational-Wave Observatory) should detect gravitational waves, further sensitivity improvement, particularly at low frequencies, will be needed to provide event rates necessary for astronomy. Expected project outcomes will support the development of the first free mass interferometer to operate at 120K using silicon optics, a vital facility for the world community. Pushing the boundaries of measurement may also drive innovation in optical sensing with potential applications in defence, security and exploration.Read moreRead less