Accepting PhD Students

PhD projects

I am currently looking for PhD students to take on the projects such as measurements of supernova rates in the Dark Energy Survey, discovering supernovae and tidal disruption events in spectroscopic surveys (such as DESI and 4MOST), and studying the light curves and environments of old Type Ia supernovae using space- and ground-based telescopes.

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Personal profile


I am a Senior Lecturer in Astrophysics at the Institute of Cosmology and Gravitation at the University of Portsmouth, as well as a Research Associate at the American Museum of Natural History. In 2013, I received my PhD in Physics and Astronomy from Tel-Aviv University. I then held two postdoctoral research positions at The Johns Hopkins University (2013-2014) and New York University (2014-2016), before moving to the Center for Astrophysics | Harvard & Smithsonian as an independent National Science Foundation Astronomy and Astrophysics Postdoctoral Fellow (2016-2020).

Research Interests

I study supernovae - the explosions of stars - as well as other transient astrophysical phenomena. I use observations (images and spectra) obtained with ground- and space-based observatories and large-scale spectroscopic surveys (such as SDSS and DESI). I am specifically interested in uncovering the nature of the progenitors of Type Ia supernovae, studying these supernovae when they are several years old, and conducting population studies of supernovae in general. I am also working on discovering and characterizing tidal disruption events - flares caused by stars that are ripped apart by super-massive black holes - and the galaxies in which they occur.

Education/Academic qualification

Ph.D., Tel Aviv University

Award Date: 21 Nov 2013

External positions

Associate, Darwin College

15 May 2020 → …

Visiting Scholar, Institute of Astronomy

1 Oct 2019 → …

NSF Astronomy and Astrophysics Postdoctoral Fellow, Harvard-Smithsonian Center for Astrophysics

1 Oct 201631 Mar 2020

Assistant Research Scientist, New York University

1 Jun 201430 Sep 2016

Assistant Research Scientist, Johns Hopkins University

1 Sep 201331 May 2014

Research Associate, American Museum of Natural History

1 Jul 2013 → …


  • QB Astronomy
  • astrophysics
  • supernova
  • transients
  • time domain
  • TDE
  • tidal disruption
  • astronomy
  • physics
  • QC Physics


Dive into the research topics where Or Graur is active. These topic labels come from the works of this person. Together they form a unique fingerprint.
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  • Curious Kids: will time ever stop?

    Graur, O., 24 Jan 2022, The Conversation.

    Research output: Contribution to specialist publicationArticle

    Open Access
  • Supernova

    Graur, O., 1 Feb 2022, Cambridge, MA: MIT Press. 240 p. (The MIT Press Essential Knowledge Series)

    Research output: Book/ReportBook

    Open Access
  • Rates and delay times of Type Ia supernovae in the Dark Energy Survey

    Wiseman, P., Sullivan, 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., & 64 othersAsorey, J., Carollo, D., Glazebrook, K., Tucker, B. E., Abbott, T. M. C., Aguena, M., Allam, S., Andrade-Oliveira, F., Annis, J., Bacon, D., Bertin, E., Brooks, D., Buckley-Geer, E., Burke, D. L., Rosell, A. C., Kind, M. C., Carretero, J., Costanzi, M., Costa, L. N. D., Pereira, M. E. S., Desai, S., Diehl, H. T., Doel, P., Everett, S., Ferrero, I., Flaugher, B., Fosalba, P., Frieman, J., García-Bellido, J., Gaztanaga, E., Giannantonio, T., Gruen, D., Gruendl, R. A., Gschwend, J., Gutierrez, G., Hollowood, D. L., Honscheid, K., James, D. J., Krause, E., Kuehn, K., Kuropatkin, N., Maia, M. A. G., Martini, P., Menanteau, F., Miquel, R., Ogando, R. L. C., Palmese, A., Paz-Chinchón, F., Petravick, D., Pieres, A., Malagón, A. A. P., Romer, A. K., Sanchez, E., Scarpine, V., Schubnell, M., Serrano, S., Sevilla-Noarbe, I., Soares-Santos, M., Suchyta, E., Swanson, M. E. C., Tarle, G., Thomas, D., To, C. & Varga, T. N., 1 Sep 2021, In: Monthly Notices of the Royal Astronomical Society. 506, 3, p. 3330–3348 19 p.

    Research output: Contribution to journalArticlepeer-review

    Open Access
    16 Downloads (Pure)
  • The Dark Energy Survey supernova program: modelling selection efficiency and observed core collapse supernova contamination

    DES Collaboration, Vincenzi, M., Graur, O., Frohmaier, C., Nichol, R. C. & Swann, E., 1 Aug 2021, In: Monthly Notices of the Royal Astronomical Society. 505, 2, p. 2819-2839 21 p.

    Research output: Contribution to journalArticlepeer-review

    Open Access
    15 Downloads (Pure)
  • A year-long plateau in the late-time near-infrared light curves of Type Ia supernovae

    Graur, O., Maguire, K., Ryan, R., Nicholl, M., Avelino, A., Riess, A. G., Shingles, L., Seitenzahl, I. R. & Fisher, R., 1 Feb 2020, In: Nature Astronomy. 4, p. 188-195 8 p.

    Research output: Contribution to journalArticlepeer-review

    Open Access
    20 Downloads (Pure)