Feeding the faintest black holes: the nature of low-luminosity accretion. The overwhelming majority of black holes are found in an extremely faint quiescent state. This project aims to improve understandings of this large population of black holes, determining the geometry of the inflowing gas, the source of the faint X-ray emission, and the fraction of energy pumped outwards in fast-moving jets. Building on recent ground-breaking results, this project aims to conduct a survey to detect a new po ....Feeding the faintest black holes: the nature of low-luminosity accretion. The overwhelming majority of black holes are found in an extremely faint quiescent state. This project aims to improve understandings of this large population of black holes, determining the geometry of the inflowing gas, the source of the faint X-ray emission, and the fraction of energy pumped outwards in fast-moving jets. Building on recent ground-breaking results, this project aims to conduct a survey to detect a new population of black holes in dense star clusters, providing new laboratories to explore accretion physics. It aims to measure the distances of the black holes and their motion through space, test evidence for the existence of event horizons, and provide new insights into how black holes form and how they affect their surroundings.Read moreRead less
The origin and nature of relativistic jets in X-ray binaries. This project uses Australia's world-class radio telescopes together with space-based X-ray telescopes to find out how and why black holes accelerate matter outwards in powerful, narrow beams moving close to the speed of light. The project will measure the enormous energy carried by these beams and how they collide with and deform the surrounding gas.
The role of radiation and cosmic rays in galaxy formation. This project aims to solve the enduring question about galaxy formation of why galaxies are so inefficient at turning gas into stars. This project will investigate two possible agents for this inefficiency, the pressures exerted by starlight photons and the relativistic cosmic rays produced by supernovae, using a combination of numerical simulations, basic physical analysis, and comparison to observations. The expected outcome will be a ....The role of radiation and cosmic rays in galaxy formation. This project aims to solve the enduring question about galaxy formation of why galaxies are so inefficient at turning gas into stars. This project will investigate two possible agents for this inefficiency, the pressures exerted by starlight photons and the relativistic cosmic rays produced by supernovae, using a combination of numerical simulations, basic physical analysis, and comparison to observations. The expected outcome will be a greatly improved understanding of the physics of the interaction of radiation and cosmic rays with star-forming interstellar gas. This will help complete the picture of how galaxies like our own came to be, and will provide tools for both future simulations and the interpretation of observations.Read moreRead less
The galactic centre: a laboratory for starburst galaxies. The Milky Way's centre is one of its most captivating regions; here star-formation, and potentially, the region's supermassive black hole, inject enormous amounts of energy and drive a powerful wind of plasma and cosmic rays above the galactic plane. This project will elucidate these processes and help us understand other galactic nuclei.
The Carina Nebula: a massive star factory and the anchor for calibrating extragalactic star formation. Massive stars are vital to the life cycle of a galaxy, providing material and controlling the environment where new stars are made. This project will use the Australia Telescope to map the spectacular Carina Nebula, a hotbed of massive stars, to provide a picture of its stars and gas and a template for understanding star formation in distant galaxies.
Supernovae as the origin of antimatter in our galaxy. This project aims to uncover the origin of the bulk of the antimatter in our Milky Way Galaxy. Astrophysicists have known for forty years that our Galaxy glows with gamma-rays emitted by the annihilation of huge numbers of positrons, the antimatter partners to electrons. Certain supernovae are the likely source of these positrons. To fully investigate this idea and its ramifications, this project will perform three-dimensional supercomputer s ....Supernovae as the origin of antimatter in our galaxy. This project aims to uncover the origin of the bulk of the antimatter in our Milky Way Galaxy. Astrophysicists have known for forty years that our Galaxy glows with gamma-rays emitted by the annihilation of huge numbers of positrons, the antimatter partners to electrons. Certain supernovae are the likely source of these positrons. To fully investigate this idea and its ramifications, this project will perform three-dimensional supercomputer simulations of thermonuclear supernova explosions. This project aspires to resolve a long-standing mystery in astrophysics and provide an exemplar for best usage of Australian investment in astronomy and supercomputing infrastructure.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE120100158
Funder
Australian Research Council
Funding Amount
$750,000.00
Summary
The Nanten2 sub-millimetre telescope. The millimetre-wavelength sky holds the key for understanding how stars form in the coldest regions of interstellar space: the molecular clouds of our Galaxy. A new frontline facility in Chile will be used in an international research endeavour to map their structures, in order to find out how they form and what causes stars to be born inside them.
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE110100038
Funder
Australian Research Council
Funding Amount
$150,000.00
Summary
The NANTEN2 Observatory sub-millimetre wave telescope. The millimetre-wavelength sky holds the key to understanding how stars form in the coldest regions of interstellar space: the molecular clouds of our Galaxy. This new frontline facility in Chile will be used in an international research endeavour to map these cold regions and the stars they contain in order to find out how they form and what causes stars to be born within them.