Publications

First-author publications

  1. R. Kiefer, A.-M. Broomhall: They Do Change After All: 25 Years of GONG Data Reveal Variation of p-Mode Energy Supply Rates. Accepted for publication in MNRAS.
  2. R. Kiefer, A.-M. Broomhall: Empirical Relations for the Sensitivities of Solar-like Oscillations to Magnetic Perturbations. MNRAS, 496.4, 4593-4605 (2020), ADS, arXiv
  3. R. Kiefer, A.-M. Broomhall, W. Ball: Seismic Signatures of Stellar Magnetic Activity – What Can We Expect from TESS? Frontiers in Astronomy and Space Sciences, 6:52 (2019), ADS, arXiv
  4. R. Kiefer, R. Komm, F. Hill, A.-M. Broomhall, M. Roth: GONG p-Mode Parameters Through Two Solar Cycles. Solar Physics, 293.11:151 (2018), ADS, arXiv
  5. R. Kiefer, M. Roth: The Effect of Toroidal Magnetic Fields on Solar Oscillation Frequencies. ApJ, 854.1:74 (2018), ADS, arXiv
  6. R. Kiefer, A. Schad, M. Roth: Analytical calculation of the general matrix element for general toroidal magnetic fields. ApJ, 846.2:162 (2017), ADS, arXiv
  7. R. Kiefer, A. Schad, G. Davies, M. Roth: Stellar magnetic activity and variability of oscillation parameters: An investigation of 24 solar-like stars observed by Kepler. A&A, 598:A77 (2017), ADS, arXiv
  8. R. Kiefer, A. Schad, W. Herzberg, M. Roth: Determination of fundamental asteroseismic parameters using the Hilbert transform. A&A, 578:A56 (2015), ADS, arXiv

Co-authored publications

  1. W. J. Chaplin, A. Serenelli, A. Miglio, T. Morel, J. T. Mackereth, F. Vincenzo, H. Kjeldsen, (et al. including R. Kiefer): Age dating of an early Milky Way merger via asteroseismology of the naked-eye star nu Indi. Nature Astronomy, 4:382-389 (2020), ADS, arXiv
  2. A. R. G. Santos, T. L. Campante, W. J. Chaplin (et al., including R. Kiefer): Signatures of Magnetic Activity: On the Relation between Stellar Properties and p-mode Frequency Variations. ApJ, 883.1:65 (2019), ADS, arXiv
  3. A. R. G. Santos, T. L. Campante, W. J. Chaplin, M. S. Cunha, M. N. Lund, R. Kiefer et al.: Signatures of magnetic activity in the seismic data of solar-type stars observed by Kepler. ApJS, 237.1:17 (2018), ADS, arXiv

Other publications

  1. A. R. G. Santos, T. L. Campante, W. J. Chaplin, M. S. Cunha, M. N. Lund, R. Kiefer et al.: Seismic signatures of magnetic activity in solar-type stars observed by Kepler. Published in D. Banerjee et al. (Eds.), Proceedings of the IAU: Long-term Datasets for the Understanding of Solar and Stellar Magnetic Cycles, S340, 225–228, Cambridge University Press, ADS, arXiv
  2. J. Amaya, S. Musset, V. Andersson, A. Diercke, C. Höller, S. Iliev, L. Juhász, R. Kiefer, et al.: The PAC2MAN mission: a new tool to understand and predict solar energetic events. Journal of Space Weather and Space Climate, 5:A5 (2015), ADS, arXiv

Theses

  1. PhD Thesis:
    R. Kiefer: Seismic investigations of solar and stellar magnetic activity. Albert-Ludwigs-University, Freiburg, Germany (2018), Zenodo
  2. Diploma thesis:
    R. Kiefer: Methods for Asteroseismic Analysis of Kepler Data – An Estimation of Mass, Radius and Activity of Solar-like Stars. Albert-Ludwigs-University, Freiburg, Germany (2013). Download the PDF directly.