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004

6/1/2020

 

Combined Radio/X-ray Study of Galaxy Clusters

PI: Thomas Reiprich and Marcus Brueggen

​We propose to study the radio properties of X-ray selected galaxy clusters. This includes studies
of radio haloes, radio relics, tailed radio galaxies, as well as cluster central radio AGN and their
correlation with morphological X-ray parameters. The X-ray and radio views of galaxy clusters
are highly complementary, tracing the hot thermal and relativistic particle populations,
respectively.

003

23/12/2019

 

Supernova remnants, superbubbles, and the global structure of the interstellar medium in the Magellanic Clouds

PI: Manami Sasaki (ECAP) 

​Stellar winds of massive stars and supernova explosions cause interstellar strong shock waves that expands into the ambient interstellar medium (ISM). A combination of the effect of stellar winds of many stars and supernova remnants (SNRs) forms large structures in the ISM called superbubbles. In the shock waves, interstellar gas is ionised and heated to very high temperatures and particles are accelerated to relativistic energies. In SNRs, heavier elements produced in the progenitor star are expelled into the ISM. We will combine multi-wavelength data of SNRs and superbubbles in the Magellanic Clouds from radio to X-rays to study the interaction between the interstellar shock waves and the ISM and the chemical enrichment of these satellite galaxies of the Milky Way.
​

002

19/12/2019

 

  Connecting HI and X­ray absorption in distant AGN with FLASH/eRosita 

PI:  Vanessa Moss (CASS/CSIRO)

001

19/12/2019

 

Black holes accreting at extreme rates: radio follow-up of eROSITA tidal disruption events and ultraluminous X-ray sources

PI:  Gemma Anderson (Curtin) 
The release of gravitational energy when mass is suddenly dumped onto a black hole powers some of the most explosive phenomena in the Universe. This is the most extreme example of a universal process called accretion, which is responsible for the growth of all astrophysical systems, from stars to galaxies.
This project aims to understand how the most rapidly-feeding black holes (accreting in the super-Eddington regime) produce powerful outflows, and to determine under what conditions these jets can be launched. We will perform radio follow-up of short-lived, explosive events to unveil when the jets are formed and how they evolve in real time. These include stellar-mass black holes rapidly consuming material torn off a nearby companion star (known as transient ultraluminous X-ray sources), and supermassive black holes tearing apart unlucky stars that wander too close (known as tidal disruption events).
​The unrivalled capabilities of the new X-ray telescope eROSITA will allow us to discover thousands of such rapidly-evolving systems. We will follow up many of these with Australian radio telescopes to explore in detail the connection between the infalling matter and the launching of jets in some of the most extreme environments known in the Universe.

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