How typical is our Local Galaxy Group? This project will uncover how unusual the Local Group is by comparing the Milky Way and Andromeda Galaxy (known as M31) halos to similar mass systems in the local Universe. By using well understood galaxy groups created as part of the Galaxy And Mass Assembly project (GAMA), the study will be able to uncover the mass distribution of galaxies found in different mass groups. It will go further than any previous work by combining these robust groups with faint ....How typical is our Local Galaxy Group? This project will uncover how unusual the Local Group is by comparing the Milky Way and Andromeda Galaxy (known as M31) halos to similar mass systems in the local Universe. By using well understood galaxy groups created as part of the Galaxy And Mass Assembly project (GAMA), the study will be able to uncover the mass distribution of galaxies found in different mass groups. It will go further than any previous work by combining these robust groups with fainter imaging data. The combination of both datasets will allow the determination of whether the Local Group is typical or unusual. Putting the Local Group into a cosmological context is vital since many future Galactic archaeology surveys assume that it is typical, and can meaningfully inform us about the wider universe.Read moreRead less
Utilising artificial intelligence to elucidate the physics of galaxies. For decades astronomers have puzzled over the connection between the structure and evolution of galaxies and the role played by host environments. This project aims to resolve this problem by combining multi-wavelength observations, multi-component simulations, and pioneering data analysis using artificial intelligence. In particular, we target the nearby Fornax galaxy cluster as a laboratory for studying galaxy formation in ....Utilising artificial intelligence to elucidate the physics of galaxies. For decades astronomers have puzzled over the connection between the structure and evolution of galaxies and the role played by host environments. This project aims to resolve this problem by combining multi-wavelength observations, multi-component simulations, and pioneering data analysis using artificial intelligence. In particular, we target the nearby Fornax galaxy cluster as a laboratory for studying galaxy formation in dense environments. Using our novel machine learning techniques, we will elucidate the physical mechanisms that drive the rapid evolution of star formation, galactic nuclei, and gas and dust content within Fornax. Our predictions will benefit ongoing and future surveys at the national and international level. Read moreRead less
In Search of New Gravity: testing advanced theories of gravity with cosmological data. The most startling discovery in cosmology in the last few decades has been that the Universe is accelerating. This remarkable fact indicates that our theory of gravity may need revision. Our current theory, Einstein’s theory of General Relativity, stands up in our solar system. If this theory breaks down on large scales, leading to the accelerating expansion, there must be some ‘cross-over’ scale where the the ....In Search of New Gravity: testing advanced theories of gravity with cosmological data. The most startling discovery in cosmology in the last few decades has been that the Universe is accelerating. This remarkable fact indicates that our theory of gravity may need revision. Our current theory, Einstein’s theory of General Relativity, stands up in our solar system. If this theory breaks down on large scales, leading to the accelerating expansion, there must be some ‘cross-over’ scale where the theory changes. This project will make theoretical predictions for those models that contain a cross-over and test them against current data for current and upcoming Australian cosmological surveys. It will determine if our current theory of gravity is a satisfactory theory, and if it is not, which new theory should replace it.Read moreRead less
Understanding the dynamics of the dark universe. This project aims to test theories of dark matter and dark energy with the ultimate goal of understanding the properties of the dark components of the universe and how those properties can be explained by new fundamental physics. The project will use two astronomical datasets, the Dark Energy Survey, with measurements of approximately 3000 supernovae, and the Dark Energy Spectroscopic Instrument, with measurements of 30 million galaxies. By compar ....Understanding the dynamics of the dark universe. This project aims to test theories of dark matter and dark energy with the ultimate goal of understanding the properties of the dark components of the universe and how those properties can be explained by new fundamental physics. The project will use two astronomical datasets, the Dark Energy Survey, with measurements of approximately 3000 supernovae, and the Dark Energy Spectroscopic Instrument, with measurements of 30 million galaxies. By comparing theoretical models to this combination of data the project will help to determine whether dark energy changes with time, measure detailed clustering properties of dark matter, and test advanced theories of gravity.Read moreRead less
Mapping the dark matter with early type galaxies. Unidentified dark matter outweighs luminous matter (stars, gas, and galaxies) by several times and is detected by its gravitational effects in the Universe. The Six Degree Field Galaxy Survey is now complete and this project will prepare a larger survey, which will put the team clearly in the lead in understanding the distribution of dark matter.
Weighing Black Holes with The Australian Dark Energy Survey. This project plans to measure how supermassive black holes have evolved over the last 12 billion years. Direct measurements of central black hole masses only exist for about 40 relatively nearby galaxies. The unique time-lapse observations and five-year baseline of the Australian Dark Energy Survey will enable us to measure masses for about 400 black holes, an order of magnitude more than previously possible. In addition to weighing bl ....Weighing Black Holes with The Australian Dark Energy Survey. This project plans to measure how supermassive black holes have evolved over the last 12 billion years. Direct measurements of central black hole masses only exist for about 40 relatively nearby galaxies. The unique time-lapse observations and five-year baseline of the Australian Dark Energy Survey will enable us to measure masses for about 400 black holes, an order of magnitude more than previously possible. In addition to weighing black holes, recent results show that with precision measurement these systems may provide a standard candle, a new fundamental yardstick for cosmology. Unlike supernova observations that discovered dark energy, our measurements are practical to distances stretching back across 90 per cent of the observable universe.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE220100003
Funder
Australian Research Council
Funding Amount
$450,675.00
Summary
Understanding diversity: chemical and kinematic tracers of galaxy evolution. Understanding how galaxies form and evolve throughout the Universe is one of the biggest outstanding challenges in astrophysics. The project aims to develop an innovative method for understanding the fundamental properties of angular momentum and chemical content of all kinds of galaxies. This project expects to generate new knowledge in the field of galaxy evolution, for the first time enabling astronomers to robustly ....Understanding diversity: chemical and kinematic tracers of galaxy evolution. Understanding how galaxies form and evolve throughout the Universe is one of the biggest outstanding challenges in astrophysics. The project aims to develop an innovative method for understanding the fundamental properties of angular momentum and chemical content of all kinds of galaxies. This project expects to generate new knowledge in the field of galaxy evolution, for the first time enabling astronomers to robustly compare distant, long-ago galaxies with those in the nearby, present-day Universe. Expected outcomes include a novel framework for determining galaxy morphology, based on fundamental physics. The framework will be highly beneficial to understanding the evolution of diverse types of galaxies, including our own Milky Way.Read moreRead less
The major transformation mechanism of disk galaxies. This project aims to discover how lenticular (S0) galaxies formed, which has been a problem since they were first introduced as a possible transition between elliptical and spiral galaxies over 80 years ago. This project will compare observations at various wavelengths and high-resolution computer simulations. It also aims to advance physical understanding of star formation, gas and dust evolution, and morphological transformation driven by en ....The major transformation mechanism of disk galaxies. This project aims to discover how lenticular (S0) galaxies formed, which has been a problem since they were first introduced as a possible transition between elliptical and spiral galaxies over 80 years ago. This project will compare observations at various wavelengths and high-resolution computer simulations. It also aims to advance physical understanding of star formation, gas and dust evolution, and morphological transformation driven by environments. The expected benefit is to solve the problem of S0 formation and provide models to interpret the large volumes of data generated by Australian surveys.Read moreRead less
Dark matter in the smallest galaxies. The gravity from invisible dark matter controls the formation of large objects like galaxies in the Universe, but we don't know how smaller objects form. This project will make an advanced computer simulation of the formation of the smallest galaxies and compare it with new observations of these objects to determine how they form.
Converging on new particles and fundamental symmetries. The goal of this project is to test theories for new particles and fundamental symmetries. By using advanced computational and statistical methods to combine all relevant data from many different experiments with a large number of different theoretical predictions, it expects to reveal just how well different theories actually describe reality. This will help us to understand what new particles and fundamental symmetries exist beyond thos ....Converging on new particles and fundamental symmetries. The goal of this project is to test theories for new particles and fundamental symmetries. By using advanced computational and statistical methods to combine all relevant data from many different experiments with a large number of different theoretical predictions, it expects to reveal just how well different theories actually describe reality. This will help us to understand what new particles and fundamental symmetries exist beyond those we already know. It will lead to new algorithms and computational methods in machine learning and statistical sampling, and will train a cohort of graduates highly skilled in statistical data science and research computing.Read moreRead less