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Academic Interests

I want to know what the universe is made of. The standard model of particle physics is a very successful theory when it comes to describing the fundamental particles and the forces binding them together. However, it does not explain dark matter and the smallest particles, the neutrinos. Using cosmological measurements such as galaxy surveys and primordial chemical abundances, I try to uncover some of the secrets of dark matter and neutrinos.

Higher education and employment history


  • Postdoc at Institute for Theoretical Astrophysics, University of Oslo
  • Visiting academic at the School of Mathematics and Physics, University of Queensland


  • Postdoc at School of Mathematics and Physics, University of Queensland
  • The Danish Council for Independent Research | Natural Sciences (FNU) Fellow


  • PhD student at Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen (2009, thesis)


  • Cand. Scient. in physics from University of Copenhagen (2006)


  • B. Sc. in physics from University of Copenhagen (2004)

Selected memberships and prizes

  • Affiliate at the Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO) from 2013
  • Member of the Austronomical Society of Australia (ASA) since 2012 including the chapters for Early Career Researchers (ECR),  Education and Public Outreach (EPOC), Theoretical Astrophysics (ANITA), Women in Astronomy (WIA)
  • Recipient of the Danish Council for Independent Researcher's Young Research Prize in 2010
  • State finalist for Queensland in FreshScience

Selected popular scientific papers

  • “Darkness after dawn: north-east Australia set for solar eclipse”, Introduction to solar eclipses at, November 2012
  • "The Universe gets darker and darker (Danish title: Universet bliver mørkere og mørkere)", Popular scientific article in the Danish physics magazine “KVANT”, December 2010
  • "The Invisible LEGO - about dark matter in the Universe (Danish title: Usynlige legoklodser - om mørkt stof i Universet)", Printed in the Niels Bohr Institute based magazine “Gamma”, no. 149 March 2008,
  • "Exotic particle candidates for dark matter (Danish title: Eksotiske partikler som mørkt stof", Printed in the Danish astronomy magazine “Aktuel Astronomi”, no. 1 Jan 2008
  • "Hunting for dark matter (Danish title: Jagten på det mørke stof)", Printed in the Danish science magazine “Aktuel Naturvidenskab” no. 5 Nov 2007 and in the major Danish newspaper “Jyllandsposten” on Dec 29 2007
Tags: Astronomy and Astrophysics, Cosmology, Structure formation, Dark Matter, Neutrinos, Nucleosynthesis


  • Riemer-Sørensen, Signe & Rosenlund, Gjert Hovland (2020). Deep Reinforcement Learning for Long Term Hydropower Production Scheduling, In  2020 International Conference on Smart Energy Systems and Technologies - SEST.  IEEE.  ISBN 978-1-7281-4701-7.  paper. Show summary
  • Weltman, Amanda; Bull, P; Camera, S; Kelley, K; Padmanabhan, H; Pritchard, J; Raccanelli, A; Riemer-Sørensen, Signe; Shao, L; Andrianomena, S; Athanassoula, E; Bacon, D; Barkana, R; Bertone, G; Bœhm, C; Bonvin, C; Bosma, A; Brüggen, M; Burigana, C; Calore, F; Cembranos, J. A. R.; Clarkson, C; Connors, R. M. T.; de la Cruz-Dombriz, Á; Dunsby, P. K. S.; Fonseca, J; Fornengo, N; Gaggero, D; Harrison, I; Larena, J; Ma, Y. Z.; Maartens, R; Méndez-Isla, M; Mohanty, S. D.; Murray, S; Parkinson, D; Pourtsidou, A; Quinn, P. J.; Regis, M; Saha, P; Sahlén, M; Sakellariadou, M; Silk, J; Trombetti, T; Vazza, F; Venumadhav, T; Vidotto, F; Villaescusa-Navarro, F; Wang, Y; Weniger, C; Wolz, L; Zhang, F & Gaensler, Bryan M. (2020). Fundamental physics with the Square Kilometre Array. Publications Astronomical Society of Australia.  ISSN 1323-3580.  37:e002, s 1- 52 . doi: 10.1017/pasa.2019.42
  • Riemer-Sørensen, Signe; Wu, Jie; Lie, Halvor; Sævik, Svein & Kim, Sangwoo (2019). Data-Driven Prediction of Vortex-Induced Vibration Response of Marine Risers Subjected to Three-Dimensional Current, In  Nordic Artificial Intelligence Research and Development: Third Symposium of the Norwegian AI Society, NAIS 2019.  Springer.  ISBN 978-3-030-35664-4.  kapittel.  s 78 - 89 Full text in Research Archive. Show summary
  • Mas Ribas, Lluis; Riemer-Sørensen, Signe; Hennawi, Joseph F; Miralda-Escudé, Jordi; O'Meara, John M.; Pérez-Ràfols, Ignasi; Murphy, Michael T. & Webb, John K. (2018). Origin of Metals around Galaxies. I. Catalogs of Metal-line Absorption Doublets from High-resolution Quasar Spectra. Astrophysical Journal (ApJ).  ISSN 0004-637X.  862(1) . doi: 10.3847/1538-4357/aac81a Full text in Research Archive.
  • Zavarygin, E. O.; Webb, J. K.; Dumont, V. & Riemer-Sørensen, Signe (2018). The primordial deuterium abundance at z_abs = 2.504 from a high signal-to-noise spectrum of Q1009+2956. Monthly notices of the Royal Astronomical Society.  ISSN 0035-8711.  477(4), s 5536- 5553 . doi: 10.1093/MNRAS/STY1003 Full text in Research Archive.
  • Zavarygin, E. O.; Webb, J. K.; Riemer-Sørensen, Signe & Dumont, V. (2018). Primordial deuterium abundance at z_abs = 2:504 towards Q1009+2956. Journal of Physics: Conference Series.  ISSN 1742-6588.  1038(1) . doi: 10.1088/1742-6596/1038/1/012012 Full text in Research Archive.
  • Riemer-Sørensen, Signe & Jenssen, Espen Sem (2017). Nucleosynthesis Predictions and High-Precision Deuterium Measurements. Universe.  ISSN 2218-1997.  3(2) . doi: 10.3390/universe3020044 Full text in Research Archive.
  • Riemer-Sørensen, Signe; Kotuš, S.; Webb, J. K.; Ali, K.; Dumont, V.; Murphy, M. T. & Carswell, R. F. (2017). A precise deuterium abundance: remeasurement of the z = 3.572 absorption system towards the quasar PKS1937-101. Monthly notices of the Royal Astronomical Society.  ISSN 0035-8711.  468(3), s 3239- 3250 . doi: 10.1093/mnras/stx681 Full text in Research Archive.
  • Bull, Philip James; Akrami Cheghasiahi, Yashar; Adamek, Julian; Baker, Tessa; Bellini, Emilio; Beltrán Jiménez, Jose; Bentivegna, Eloisa; Camera, Stefano; Clesse, Sébastien; Davis, Jonathan H.; Di Dio, Enea; Enander, Jonas; Heavens, Alan; Heisenberg, Lavinia; Hu, Bin; Llinares, Claudio; Maartens, Roy; Mörtsell, Edvard; Nadathur, Seshadri; Noller, Johannes; Pasechnik, Roman; Pawlowski, Marcel S.; Pereira, Thiago dos Santos; Quartin, Miguel; Ricciardone, Angelo; Riemer-Sørensen, Signe; Rinaldi, Massimiliano; Sakstein, Jeremy; Saltas, Ippocratis D.; Salzano, Vincenzo; Sawicki, Ignacy; Solomon, Adam R.; Spolyar, Douglas; Starkman, Glenn D.; Steer, Danièle; Tereno, Ismael; Verde, Licia; Villaescusa-Navarro, Francisco; von Strauss, Mikael & Winther, Hans Arnold (2016). Beyond ΛCDM: Problems, solutions, and the road ahead. Physics of the Dark Universe.  ISSN 2212-6864.  12, s 56- 99 . doi: 10.1016/j.dark.2016.02.001
  • Riemer-Sørensen, Signe (2016). Constraints on the presence of a 3.5 keV dark matter emission line from Chandra observations of the Galactic centre. Astronomy and Astrophysics.  ISSN 0004-6361.  590 . doi: 10.1051/0004-6361/201527278
  • Riemer-Sørensen, Signe; Webb, J. K.; Crighton, N.; Dumont, V.; Ali, K.; Kotus, S.; Bainbridge, M.; Murphy, M. T. & Carswell, Robert (2015). A robust deuterium abundance; re-measurement of the z = 3.256 absorption system towards the quasar PKS 1937-101. Monthly notices of the Royal Astronomical Society.  ISSN 0035-8711.  447(3), s 2925- 2936 . doi: 10.1093/mnras/stu2599
  • Riemer-Sørensen, Signe; Wik, D.; Madejski, G.; Molendi, S.; Gastaldello, F.; Harrison, F. A.; Craig, W. W.; Hailey, C. J.; Boggs, S. E.; Christensen, F. E.; Stern, D.; Zhang, W. W. & Hornstrup, A. (2015). DARK MATTER LINE EMISSION CONSTRAINTS FROM NuSTAR OBSERVATIONS OF THE BULLET CLUSTER. Astrophysical Journal (ApJ).  ISSN 0004-637X.  810(1) . doi: 10.1088/0004-637X/810/1/48
  • Riemer-Sørensen, Signe; Parkinson, D. & Davis, T. M. (2014). Combining Planck data with large scale structure information gives a strong neutrino mass constraint. Physical Review D.  ISSN 1550-7998.  89 . doi: 10.1103/PhysRevD.89.103505 Full text in Research Archive.

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Published Aug. 22, 2013 2:51 PM - Last modified Oct. 31, 2018 2:10 PM