Professor Tamara Davis
Professor

Tamara Davis

Email: 
Phone: 
+61 7 336 53134
Mobile: 
0432 526 989

Background

Professor Tamara Davis is an astrophysicist who studies the elusive “dark energy” that’s accelerating the universe. She completed her PhD in 2004 at the University of New South Wales on theoretical cosmology and black holes, then worked on supernova cosmology in two postdoctoral fellowships, the first at the Australian National University (collaborating with Lawrence Berkeley Laboratory) and the second at the University of Copenhagen. In 2008 she moved to Queensland to join the WiggleZ Dark Energy Survey team working on mapping the galaxies in the Universe. She led the Dark Theme within the Australian Research Council Centre of Excellence for All-sky Astrophysics, is now leading the OzDES survey -- working with the international Dark Energy Survey, and working with working with the Dark Energy Spectroscopic Instrument project. As of 2024 she is Deputy Director of the Australian Research Council Centre of Excellence for Gravitational Wave Discovery.

Her accolades include the Astronomical Society of Australia's Louise Webster Medal for early career research impact, the L'Oréal Women in Science Fellowship for Australia, the Australian Institute of Physics Women in Physics Lectureship, the Australian Academy of Science’s Nancy Millis Medal for outstanding female leadership in science, an Australian Research Council Laureate Fellowship, the Astronomical Society of Australia's Ellery Lectureship, and a Member of the Order of Australia (AM).

Availability

Professor Tamara Davis is:
Not available for supervision
Media expert

Fields of research

Physical Sciences

Qualifications

  • Doctor of Philosophy, University of New South Wales

Research interests

  • Cosmology, Dark Energy, and Dark Matter

    Using supernovae, gravitational waves, and the large-scale structure of the Universe to learn about fundamental physics. On a quest to map all the galaxies in the observable Universe.

Search Professor Tamara Davis’s works on UQ eSpace

265 works between 2001 and 2025
All (265) Journal Article (257) Book Chapter (2) Conference Publication (5) Other Outputs (1)

101 - 120 of 265 works

2022

Journal Article

Dark Energy Survey Year 3 results: a 2.7% measurement of baryon acoustic oscillation distance scale at redshift 0.835

Abbott, T. M.C., Aguena, M., Allam, S., Amon, A., Andrade-Oliveira, F., Asorey, J., Avila, S., Bernstein, G. M., Bertin, E., Brandao-Souza, A., Brooks, D., Burke, D. L., Calcino, J., Camacho, H., Carnero Rosell, A., Carollo, D., Carrasco Kind, M., Carretero, J., Castander, F. J., Cawthon, R., Chan, K. C., Choi, A., Conselice, C., Costanzi, M., Crocce, M., Da Costa, L. N., Pereira, M. E.S., Davis, T. M., De Vicente, J. ... Wilkinson, R. D. (2022). Dark Energy Survey Year 3 results: a 2.7% measurement of baryon acoustic oscillation distance scale at redshift 0.835. Physical Review D, 105 (4) 043512. doi: 10.1103/PhysRevD.105.043512

Dark Energy Survey Year 3 results: a 2.7% measurement of baryon acoustic oscillation distance scale at redshift 0.835

2022

Journal Article

The DES view of the Eridanus supervoid and the CMB cold spot

Kovács, A., Jeffrey, N., Gatti, M., Chang, C., Whiteway, L., Hamaus, N., Lahav, O., Pollina, G., Bacon, D., Kacprzak, T., Mawdsley, B., Nadathur, S., Zeurcher, D., García-Bellido, J., Alarcon, A., Amon, A., Bechtol, K., Bernstein, G. M., Campos, A., Rosell, A. Carnero, Kind, M. Carrasco, Cawthon, R., Chen, R., Choi, A., Cordero, J., Davis, C., Derose, J., Doux, C., Drlica-Wagner, A. ... Weller, J. (2022). The DES view of the Eridanus supervoid and the CMB cold spot. Monthly Notices of the Royal Astronomical Society, 510 (1), 216-229. doi: 10.1093/mnras/stab3309

The DES view of the Eridanus supervoid and the CMB cold spot

2022

Journal Article

Dark Energy Survey Year 3 results: cosmological constraints from galaxy clustering and weak lensing

Abbott, T. M.C., Aguena, M., Alarcon, A., Allam, S., Alves, O., Amon, A., Andrade-Oliveira, F., Annis, J., Avila, S., Bacon, D., Baxter, E., Bechtol, K., Becker, M. R., Bernstein, G. M., Bhargava, S., Birrer, S., Blazek, J., Brandao-Souza, A., Bridle, S. L., Brooks, D., Buckley-Geer, E., Burke, D. L., Camacho, H., Campos, A., Carnero Rosell, A., Carrasco Kind, M., Carretero, J., Castander, F. J., Cawthon, R. ... Zuntz, J. (2022). Dark Energy Survey Year 3 results: cosmological constraints from galaxy clustering and weak lensing. Physical Review D, 105 (2) 023520. doi: 10.1103/PhysRevD.105.023520

Dark Energy Survey Year 3 results: cosmological constraints from galaxy clustering and weak lensing

2022

Journal Article

Dark Energy Survey Year 3 Results: Deep field optical + near-infrared images and catalogue

Hartley, W. G, Choi, A, Amon, A, Gruendl, R. A, Sheldon, E, Harrison, I, Bernstein, G. M, Sevilla-Noarbe, I, Yanny, B, Eckert, K, Diehl, H. T, Alarcon, A, Banerji, M, Bechtol, K, Buchs, R, Cantu, S, Conselice, C, Cordero, J, Davis, C, Davis, T. M, Dodelson, S, Drlica-Wagner, A, Everett, S, Ferté, A, Gruen, D, Honscheid, K, Jarvis, M, Johnson, M. D, Kokron, N ... Zuntz, J (2022). Dark Energy Survey Year 3 Results: Deep field optical + near-infrared images and catalogue. Monthly Notices of the Royal Astronomical Society, 509 (3), 3547-3579. doi: 10.1093/mnras/stab3055

Dark Energy Survey Year 3 Results: Deep field optical + near-infrared images and catalogue

2021

Journal Article

Multi-wavelength optical and NIR variability analysis of the Blazar PKS 0027-426

Guise, E, Hönig, S F, Almeyda, T, Horne, K, Kishimoto, M, Aguena, M, Allam, S, Andrade-Oliveira, F, Asorey, J, Banerji, M, Bertin, E, Boulderstone, B, Brooks, D, Burke, D L, Rosell, A Carnero, Carollo, D, Kind, M Carrasco, Carretero, J, Costanzi, M, da Costa, L N, Davis, T M, De Vicente, J, Doel, P, Everett, S, Ferrero, I, Flaugher, B, Frieman, J, Gandhi, P, Goad, M ... Tucker, B E (2021). Multi-wavelength optical and NIR variability analysis of the Blazar PKS 0027-426. Monthly Notices of the Royal Astronomical Society, 510 (3), 3145-3177. doi: 10.1093/mnras/stab3457

Multi-wavelength optical and NIR variability analysis of the Blazar PKS 0027-426

2021

Journal Article

OzDES reverberation mapping program: lag recovery reliability for 6-year C IV analysis

Penton, A., Malik, U., Davis, T. M., Martini, P., Yu, Z., Sharp, R., Lidman, C., Tucker, B. E., Hoormann, J. K., Aguena, M., Allam, S., Annis, J., Asorey, J., Bacon, D., Bertin, E., Bhargava, S., Brooks, D., Calcino, J., Rosell, A. Carnero, Carollo, D., Kind, M. Carrasco, Carretero, J., Costanzi, M., da Costa, L. N., Pereira, M. E. S., De Vicente, J., Diehl, H. T., Eifler, T. F., Everett, S. ... Wilkinson, R. D. (2021). OzDES reverberation mapping program: lag recovery reliability for 6-year C IV analysis. Monthly Notices of the Royal Astronomical Society, 509 (3), 4008-4023. doi: 10.1093/mnras/stab3027

OzDES reverberation mapping program: lag recovery reliability for 6-year C IV analysis

2021

Journal Article

Detection of vesicular stomatitis virus Indiana from insects collected during the 2020 outbreak in Kansas, USA

McGregor, Bethany L., Rozo-Lopez, Paula, Davis, Travis M. and Drolet, Barbara S. (2021). Detection of vesicular stomatitis virus Indiana from insects collected during the 2020 outbreak in Kansas, USA. Pathogens, 10 (9) 1126, 1-12. doi: 10.3390/pathogens10091126

Detection of vesicular stomatitis virus Indiana from insects collected during the 2020 outbreak in Kansas, USA

2021

Journal Article

OzDES reverberation mapping program: the first Mg II lags from five years of monitoring

Yu, Zhefu, Martini, Paul, Penton, A, Davis, T M, Malik, U, Lidman, C, Tucker, B E, Sharp, R, Kochanek, C S, Peterson, B M, Aguena, M, Allam, S, Andrade-Oliveira, F, Annis, J, Asorey, J, Bertin, E, Brooks, D, Burke, D L, Calcino, J, Rosell, A Carnero, Carollo, D, Kind, M Carrasco, Costanzi, M, da Costa, L N, Pereira, M E S, Diehl, H T, Everett, S, Ferrero, I, Flaugher, B ... Tucker, D L (2021). OzDES reverberation mapping program: the first Mg II lags from five years of monitoring. Monthly Notices of the Royal Astronomical Society, 507 (3), 1-18. doi: 10.1093/mnras/stab2244

OzDES reverberation mapping program: the first Mg II lags from five years of monitoring

2021

Journal Article

Assessing tension metrics with dark energy survey and Planck data

Lemos, P., Raveri, M., Campos, A., Park, Y., Chang, C., Weaverdyck, N., Huterer, D., Liddle, A. R., Blazek, J., Cawthon, R., Choi, A., DeRose, J., Dodelson, S., Doux, C., Gatti, M., Gruen, D., Harrison, I., Krause, E., Lahav, O., MacCrann, N., Muir, J., Prat, J., Rau, M. M., Rollins, R. P., Samuroff, S., Zuntz, J., Aguena, M., Allam, S., Annis, J. ... Wester, W. (2021). Assessing tension metrics with dark energy survey and Planck data. Monthly Notices of the Royal Astronomical Society, 505 (4), 6179-6194. doi: 10.1093/mnras/stab1670

Assessing tension metrics with dark energy survey and Planck data

2021

Journal Article

The Dark Energy Survey data release 2

Abbott, T. M. C., Adamów, M., Aguena, M., Allam, S., Amon, A., Annis, J., Avila, S., Bacon, D., Banerji, M., Bechtol, K., Becker, M. R., Bernstein, G. M., Bertin, E., Bhargava, S., Bridle, S. L., Brooks, D., Burke, D. L., Carnero Rosell, A., Carrasco Kind, M., Carretero, J., Castander, F. J., Cawthon, R., Chang, C., Choi, A., Conselice, C., Costanzi, M., Crocce, M., da Costa, L. N., Davis, T. M. ... Vila-Verde, G. (2021). The Dark Energy Survey data release 2. The Astrophysical Journal Supplement Series, 255 (2) 20, 1-29. doi: 10.3847/1538-4365/ac00b3

The Dark Energy Survey data release 2

2021

Journal Article

Rates and delay times of type Ia supernovae in the Dark Energy Survey

Wiseman, P., Sullivan, M., Smith, M., Frohmaier, C., Vincenzi, M., Graur, O., Popovic, B., Armstrong, P., Brout, D., Davis, T. M., Galbany, L., Hinton, S. R., Kelsey, L., Kessler, R., Lidman, C., Möller, A., Nichol, R. C., Rose, B., Scolnic, D., Toy, M., Zontou, Z., Asorey, J., Carollo, D., Glazebrook, K., Lewis, G. F., Tucker, B. E., Abbott, T. M. C., Aguena, M., Allam, S. ... Walker, A. R. (2021). Rates and delay times of type Ia supernovae in the Dark Energy Survey. Monthly Notices of the Royal Astronomical Society, 506 (3), 3330-3348. doi: 10.1093/mnras/stab1943

Rates and delay times of type Ia supernovae in the Dark Energy Survey

2021

Journal Article

Dark energy survey year 3 results: weak lensing shape catalogue

Gatti, M, Sheldon, E, Amon, A, Becker, M, Troxel, M, Choi, A, Doux, C, MacCrann, N, Navarro-Alsina, A, Harrison, I, Gruen, D, Bernstein, G, Jarvis, M, Secco, L. F, Ferté, A, Shin, T, McCullough, J, Rollins, R. P, Chen, R, Chang, C, Pandey, S, Tutusaus, I, Prat, J, Elvin-Poole, J, Sanchez, C, Plazas, A. A, Roodman, A, Zuntz, J, Abbott, T. M. C ... Wilkinson, R. D (2021). Dark energy survey year 3 results: weak lensing shape catalogue. Monthly Notices of the Royal Astronomical Society, 504 (3), 4312-4336. doi: 10.1093/mnras/stab918

Dark energy survey year 3 results: weak lensing shape catalogue

2021

Journal Article

Constraints on dark matter to dark radiation conversion in the late universe with DES-Y1 and external data

Chen, A., Huterer, D., Lee, S., Ferté, A., Weaverdyck, N., Alves, O., Leonard, C. D., Maccrann, N., Raveri, M., Porredon, A., Di Valentino, E., Muir, J., Lemos, P., Liddle, A. R., Blazek, J., Campos, A., Cawthon, R., Choi, A., Dodelson, S., Elvin-Poole, J., Gruen, D., Ross, A. J., Secco, L. F., Sevilla-Noarbe, I., Sheldon, E., Troxel, M. A., Zuntz, J., Abbott, T. M.C., Aguena, M. ... Wilkinson, R. D. (2021). Constraints on dark matter to dark radiation conversion in the late universe with DES-Y1 and external data. Physical Review D, 103 (12) 123528. doi: 10.1103/PhysRevD.103.123528

Constraints on dark matter to dark radiation conversion in the late universe with DES-Y1 and external data

2021

Journal Article

The first Hubble diagram and cosmological constraints using superluminous supernovae

Inserra, C., Sullivan, M., Angus, C. R., MacAulay, E., Nichol, R. C., Smith, M., Frohmaier, C., Gutiérrez, C. P., Vicenzi, M., Möller, A., Brout, D., Brown, P. J., Davis, T. M., D'Andrea, C. B., Galbany, L., Kessler, R., Kim, A. G., Pan, Y. C., Pursiainen, M., Scolnic, D., Thomas, B. P., Wiseman, P., Abbott, T. M.C., Annis, J., Avila, S., Bertin, E., Brooks, D., Burke, D. L., Carnero Rosell, A. ... Tucker, B. E. (2021). The first Hubble diagram and cosmological constraints using superluminous supernovae. Monthly Notices of the Royal Astronomical Society, 504 (2), 2535-2549. doi: 10.1093/mnras/stab978

The first Hubble diagram and cosmological constraints using superluminous supernovae

2021

Journal Article

Improving NASA/IPAC extragalactic database redshift calculations

Carr, Anthony and Davis, Tamara (2021). Improving NASA/IPAC extragalactic database redshift calculations. The Astrophysical Journal, 914 (2) 97, 1-7. doi: 10.3847/1538-4357/abfb6e

Improving NASA/IPAC extragalactic database redshift calculations

2021

Journal Article

Dark energy survey year 3 results: photometric data set for cosmology

Sevilla-Noarbe, I., Bechtol, K., Carrasco Kind, M., Carnero Rosell, A., Becker, M. R., Drlica-Wagner, A., Gruendl, R. A., Rykoff, E. S., Sheldon, E., Yanny, B., Alarcon, A., Allam, S., Amon, A., Benoit-Lévy, A., Bernstein, G. M., Bertin, E., Burke, D. L., Carretero, J., Everett, S., Flaugher, B., Gaztanaga, E., Choi, A., Diehl, H. T., Gschwend, J., Harrison, I., Hartley, W. G., Hoyle, B., Jarvis, M., Johnson, M. D. ... Wilkinson, R. D. (2021). Dark energy survey year 3 results: photometric data set for cosmology. Astrophysical Journal, Supplement Series, 254 (2) 24, 24. doi: 10.3847/1538-4365/abeb66

Dark energy survey year 3 results: photometric data set for cosmology

2021

Journal Article

The dark energy survey supernova program: Modelling selection efficiency and observed core-collapse supernova contamination

Vincenzi, M, Sullivan, M, Graur, O, Brout, D, Davis, T M, Frohmaier, C, Galbany, L, Gutiérrez, C P, Hinton, S R, Hounsell, R, Kelsey, L, Kessler, R, Kovacs, E, Kuhlmann, S, Lasker, J, Lidman, C, Möller, A, Nichol, R C, Sako, M, Scolnic, D, Smith, M, Swann, E, Wiseman, P, Asorey, J, Lewis, G F, Sharp, R, Tucker, B E, Aguena, M, Allam, S ... (DES Collaboration) (2021). The dark energy survey supernova program: Modelling selection efficiency and observed core-collapse supernova contamination. Monthly Notices of the Royal Astronomical Society, 505 (2), 2819-2839. doi: 10.1093/mnras/stab1353

The dark energy survey supernova program: Modelling selection efficiency and observed core-collapse supernova contamination

2021

Journal Article

Consistency of cosmic shear analyses in harmonic and real space

Doux, C, Chang, C, Jain, B, Blazek, J, Camacho, H, Fang, X, Gatti, M, Krause, E, MacCrann, N, Samuroff, S, Secco, L F, Troxel, M A, Zuntz, J, Aguena, M, Allam, S, Amon, A, Avila, S, Bacon, D, Bertin, E, Brooks, D, Burke, D L, Rosell, A Carnero, Kind, M Carrasco, Carretero, J, Choi, A, Costanzi, M, Crocce, M, da Costa, L N, Pereira, M E S ... Wilkinson, R D (2021). Consistency of cosmic shear analyses in harmonic and real space. Monthly Notices of the Royal Astronomical Society, 503 (3), 3796-3817. doi: 10.1093/mnras/stab661

Consistency of cosmic shear analyses in harmonic and real space

2021

Journal Article

Dark Energy Survey year 1 results: cosmological constraints from cluster abundances, weak lensing, and galaxy correlations

To, C., Krause, E., Rozo, E., Wu, H., Gruen, D., Wechsler, R. H., Eifler, T. F., Rykoff, E. S., Costanzi, M., Becker, M. R., Bernstein, G. M., Blazek, J., Bocquet, S., Bridle, S. L., Cawthon, R., Choi, A., Crocce, M., Davis, C., Derose, J., Drlica-Wagner, A., Elvin-Poole, J., Fang, X., Farahi, A., Friedrich, O., Gatti, M., Gaztanaga, E., Giannantonio, T., Hartley, W. G., Hoyle, B. ... Wilkinson, R. D. (2021). Dark Energy Survey year 1 results: cosmological constraints from cluster abundances, weak lensing, and galaxy correlations. Physical Review Letters, 126 (14) 141301, 1-8. doi: 10.1103/PhysRevLett.126.141301

Dark Energy Survey year 1 results: cosmological constraints from cluster abundances, weak lensing, and galaxy correlations

2021

Journal Article

The effect of systematic redshift biases in BAO cosmology

Glanville, Aaron, Howlett, Cullan and Davis, Tamara M. (2021). The effect of systematic redshift biases in BAO cosmology. Monthly Notices of the Royal Astronomical Society, 503 (3), 3510-3521. doi: 10.1093/mnras/stab657

The effect of systematic redshift biases in BAO cosmology

Current funding

  • 2025 - 2028
    Cosmic Cartography to Counter Cosmic Conundrums
    ARC Discovery Projects
    Open grant
  • 2024 - 2027
    Australian Partnership in the Legacy Survey of Space and Time (ARC LIEF administered by UNSW)
    University of New South Wales
    Open grant
  • 2024 - 2031
    ARC Centre of Excellence for Gravitational Wave Discovery (ARC Centre of Excellence administered by Swinburne University)
    Swinburne University of Technology
    Open grant
  • 2022 - 2025
    A Space Odyssey: Exploring the Universe with Gravitational-Wave Sirens
    ARC Discovery Projects
    Open grant
  • 2021 - 2025
    Big Questions Institute Fellowship
    Big Questions Institute Pty Ltd
    Open grant

Past funding

  • 2019 - 2024
    Illuminating the Dark Universe
    ARC Australian Laureate Fellowships
    Open grant
  • 2018 - 2021
    Doubling the power of the TAIPAN survey facility (ARC LIEF grant administered by The Australian National University)
    Australian National University
    Open grant
  • 2017
    Ian Potter Conference Grant: Dark Energy Survey Collaboration Meeting 2017
    Ian Potter Foundation
    Open grant
  • 2016 - 2019
    Weighing Black Holes with The Australian Dark Energy Survey
    ARC Discovery Projects
    Open grant
  • 2015 - 2019
    Details of the Dark Side
    Vice-Chancellor's Research and Teaching Fellowship
    Open grant
  • 2015 - 2016
    The Australian European Southern Observatory Positioner (AESOP) (ARC LIEF Project administered by The University of Western Australia)
    University of Western Australia
    Open grant
  • 2014 - 2017
    Mapping the Dark Matter with Early Type Galaxies (ARC Linkage Project administered by Swinburne University of Technology)
    Swinburne University of Technology
    Open grant
  • 2014 - 2015
    Mapping the Universe with the Panoramic Survey Telescope and Rapid Response System (PanSTARRS) (ARC LIEF Grant administered by The University of Sydney)
    ARC LIEF Collaborating/Partner Organisation Contributions
    Open grant
  • 2013 - 2017
    ARC Centre of Excellence for All-sky Astrophysics (CAASTRO) (ARC COE administered by the University of Sydney)
    University of Sydney
    Open grant
  • 2011 - 2013
    ResTeach 2011 0.05 FTE School of Mathematics and Physics
    Open grant
  • 2011 - 2013
    Fundamental physics in distant galaxies (ARC Discovery Project administered by Swinburne University)
    Swinburne University of Technology
    Open grant
  • 2011 - 2012
    Investigating Growth of Structure in the Universe using ASKAP and SkyMapper
    UWA-UQ Bilateral Research Collaboration Award
    Open grant
  • 2010 - 2014
    Dark Matter, Dark Energy, and Dark Flow: Galaxy motion reveals fundamental physics
    ARC Future Fellowships
    Open grant
  • 2008 - 2010
    Cosmological testing of fundamental physics
    UQ New Staff Research Start-Up Fund
    Open grant

Availability

Professor Tamara Davis is:
Not available for supervision

Supervision history

Current supervision

  • Doctor Philosophy

    Measuring Neutrino Mass with the Dark Energy Spectroscopic Instrument

    Principal Advisor

    Other advisors: Dr Cullan Howlett

  • Doctor Philosophy

    Weighing supermassive black holes with the Dark Energy Survey

    Principal Advisor

    Other advisors: Dr Benjamin Pope

  • Doctor Philosophy

    Cosmology with the Dark Energy Survey

    Principal Advisor

    Other advisors: Dr Cullan Howlett

  • Doctor Philosophy

    Gravitational wave cosmology

    Principal Advisor

    Other advisors: Dr Cullan Howlett

  • Doctor Philosophy

    Completing the Puzzle: Unveiling Clues for Gravitational Wave Astrophysics and Cosmology with Simulations

    Associate Advisor

    Other advisors: Dr Cullan Howlett

  • Doctor Philosophy

    Using the motions of galaxies to probe fundamental physics

    Associate Advisor

    Other advisors: Dr Cullan Howlett

  • Doctor Philosophy

    Investigating Gravitational Wave Cosmology with Simulated Data

    Associate Advisor

    Other advisors: Dr Cullan Howlett

  • Doctor Philosophy

    Machine learning cosmology

    Associate Advisor

    Other advisors: Dr Rossana Ruggeri

  • Doctor Philosophy

    Completing the Puzzle: Unveiling Clues for Gravitational Wave Astrophysics and Cosmology with Simulations

    Associate Advisor

    Other advisors: Dr Cullan Howlett

  • Doctor Philosophy

    Galaxy motions with the Dark Energy Spectroscopic Instrument

    Associate Advisor

    Other advisors: Dr Khaled Said Soliman

  • Doctor Philosophy

    Observing Naked-Eye Stars and their Planets with TESS

    Associate Advisor

    Other advisors: Dr Benjamin Pope

  • Doctor Philosophy

    Modelling exotic cosmological models in the era of next generation galaxy surveys

    Associate Advisor

    Other advisors: Dr Cullan Howlett

Completed supervision

Enquiries

Contact Professor Tamara Davis directly for media enquiries about:

  • Astronomy
  • Astrophysics
  • Cosmology
  • Dark energy
  • Dark Matter
  • Exploding stars
  • Physics
  • Quantum gravity
  • Stars - astrophysics
  • Supernovae (exploding stars)
  • Universe
  • Vacuum energy

Need help?

For help with finding experts, story ideas and media enquiries, contact our Media team:

communications@uq.edu.au