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Alexander Heger

Professor

 https://orcid.org/0000-0002-3684-1325

Accepting PhD Students

PhD projects

1) Type I X-Ray bursts - the most common thermonuclear explosions in the universe: Numerical accretion onto neutron stars in binary star system and resulting thermonuclear flashes and other transient phenomena; various project options include nuclear physics at the extreme, gravitational settling and phase separation, accretion physics and multi-dimensional simulations, exploration of new nuclear burning regimes, superbursts and long-duration bursts, modelling of specific systems and accretion outbursts, use of statistical tools and ML for comparison to observations. 2) Stellar rotation in binary and multiple star systems, including star-planet interactions: Follow evolution of orbital parameters and internal rotation due to tidal interactions, mass loss, and mass transfer. 3) Evolution and nucleosynthesis of the first stars: Rotation, binary evolution, radiation feedback for cosmic re-ionisation, production of compact remnants and GW sources, use of ML for comparison with observations, adding models and tools starfit.org.

19962020

Research output per year

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Personal profile

Research interests

Life and explosive death of massive stars

The origin of the elements

Nuclear astrophysics

Current work comprises the study of massive to supermassive stars (10-100,000 solar masses); the first generations of stars in the universe (Pop III stars); evolution of rotating massive stars and the spin of their remnants (including predictions for GW sources); mixing and transport processes in the stellar interior; nucleosynthesis and the origin of elements, including galacto-chemical evolution - which elements are made where and when; supernovae (mechanisms and nucleosynthesis); gamma-ray bursts (collapsars and similar models) and their progenitors; modeling of Type I X-ray bursts and superbursts (thermonuclear explosions on the surface of neutron stars); stellar rotation of misaligned systems (internal rotation evolution, binary and mutile stars dynamics and interaction).

Biography

Professor, School of Physics and Astronomy, Monash University, 2015 -

Professor, School of Mathematical Sciences, Monash University, 2012 - 2014.

Associate Professor, School of Physics and Astronomy, Univeristy of Minnesota, 2008-2012.

Technical Staff Member, Theoretcial Astrophysics Group (T-6), Theory Division, Los Alamos National Laboratory, 2003-2008.

Fellow, Enrico Fermi Institute, The University of Chicago, 2001-2003.

Alexander von Humboldt Feodor Lynen Fellow, Department of Astronomy, The University of Califrnia at Santa Cruz, 1998-2001.

Max Planck Institute for Astrophysics, Dr. rer. nat. (TUM), 1995-1998.

Physics Diploma, TUM, 1989-1995.

Supervision interests

PosDoc, PhD, Masters, Honours, Undergraduate Research (e.g., PHS2350, PHS3350), and Summer Vacation Scholar Projects in the areas above.

Consulting

Happy to help with problems related to Python and numerical applications (Numpy).

External positions

Guest Professor, Tsung-Dao Lee Institute

1 Jan 2018 → 31 Dec 2020

Guest Professor, Shanghai Jiao Tong University

1 Jan 2015 → 31 Jan 2020

Research area keywords

  • Stars
  • Origin of the Elements
  • Nuclear Astrophysics
  • The FIrst Stars
  • Stellar Rotation
  • Supermassive Stars
  • Accreting Compact Stars
  • Type I X-ray Bursts
  • Stellar Astrophysics
  • Supernovae
  • Stellar Structure and Evolution
  • Hypernovae and GRBs
  • Particle Astrophysics
  • Binary and Multiple Stars

Network Recent external collaboration on country level. Dive into details by clicking on the dots.

Projects

Nuclear reactions in superdense matter - from the laboratory to the stars

Galloway, D., Heger, A., Schatz, H., Keek, L., Chenevez, J., Cumming, A., Brown, E., Sun, Y., Cyburt, R. H., Thielemann, F. K. & Falanga, M.

1/06/15 → 30/06/17

Project: Research

Uncovering the enigmatic origins of the brightest supernovae

Moriya, T. J., Mueller, B. & Heger, A.

Australian Research Council (ARC)

1/01/19 → 2/01/19

Project: Research

Research Output

Gamma-Ray Emission of 60Fe and 26Al Radioactivity in Our Galaxy

Wang, W., Siegert, T., Dai, Z. G., Diehl, R., Greiner, J., Heger, A., Krause, M., Lang, M., Pleintinger, M. M. M. & Zhang, X. L., 1 Feb 2020, In : The Astrophysical Journal. 889, 2, 13 p., 169.

Research output: Contribution to journal › Article › Research › peer-review

Open Access
File
1 Citation (Scopus)

Large-scale Mixing in a Violent Oxygen-Neon Shell Merger Prior to a Core-collapse Supernova

Yadav, N., Müller, B., Janka, H. T., Melson, T. & Heger, A., 20 Feb 2020, In : The Astrophysical Journal. 890, 2, 23 p., 94.

Research output: Contribution to journal › Article › Research › peer-review

Open Access
File
2 Citations (Scopus)

The Formation of a 70 M o˙ Black Hole at High Metallicity

Belczynski, K., Hirschi, R., Kaiser, E. A., Liu, J., Casares, J., Lu, Y., O'Shaughnessy, R., Heger, A., Justham, S. & Soria, R., 20 Feb 2020, In : The Astrophysical Journal. 890, 2, 5 p., 113.

Research output: Contribution to journal › Article › Research › peer-review

Open Access
File
4 Citations (Scopus)

Wide-field dynamic astronomy in the near-infrared with Palomar Gattini-IR and DREAMS

Soon, J., Adams, D., De, K., Galla, A., Hankins, M., Kasliwal, M. M., Moore, A. M., Adams, S. M., Antoszewski, J., Ashley, M., Babul, A. N., Bland-Hawthorn, J., Cooke, J., De Marco, O., Delacroix, A., Devillepoix, H., Ellis, S. C., Freeman, K. C., Hale, D., Heger, A. & 10 others, Jencson, J. E., Lau, R. M., Mckenna, D., Ofek, E., Ryder, S., Simcoe, R., Sokoloski, J. L., Soria, R., Smith, R. M. & Travouillon, T. D., 3 Jan 2020, Advances in Optical Astronomical Instrumentation 2019. Ellis, S. & d'Orgeville, C. (eds.). Bellingham Washington USA: SPIE - International Society for Optical Engineering, 2 p. 1120307. (Proceedings of SPIE - The International Society for Optical Engineering; vol. 11203).

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research › peer-review

A Bayesian approach to matching thermonuclear X-ray burst observations with models

Goodwin, A. J., Galloway, D. K., Heger, A., Cumming, A. & Johnston, Z., 1 Dec 2019, In : Monthly Notices of the Royal Astronomical Society. 490, 2, p. 2228-2240 13 p.

Research output: Contribution to journal › Article › Research › peer-review

1 Citation (Scopus)