All Stories

  1. Infrared spectral signatures of light r -process elements in kilonovae

    Article • Monthly Notices of the Royal Astronomical Society, April 2026, Oxford University Press (OUP)

    Dr Jon Grumer

  2. Seismoacoustic analysis of a Falcon-9 rocket stage reentry on 19 February 2025

    Article • March 2026, Copernicus GmbH

    Dr Jon Grumer

  3. Lanthanide impact on the infrared spectra of nebular phase kilonovae

    Article • Monthly Notices of the Royal Astronomical Society, March 2026, Oxford University Press (OUP)

    Dr Jon Grumer

  4. Ab initio multiconfigurational calculations of experimentally significant energy levels and transition rates in Lr i (

    Article • Physical Review A, December 2025, American Physical Society (APS)

    Dr Jon Grumer

  5. Nebular Spectra of Kilonovae with Detailed Recombination Rates. I. Light r-process Composition

    Article • The Astrophysical Journal, October 2025, American Astronomical Society

    Dr Jon Grumer

  6. Actinide signatures in low electron fraction kilonova ejecta

    Article • Monthly Notices of the Royal Astronomical Society, December 2024, Oxford University Press (OUP)

    Dr Jon Grumer

  7. State-resolved mutual neutralization of O+16

    Article • Physical Review A, May 2024, American Physical Society (APS)

    Dr Jon Grumer

  8. Targeted optimization in small-scale atomic structure calculations: application to Au I

    Article • Journal of Physics B Atomic Molecular and Optical Physics, March 2024, Institute of Physics Publishing

    Dr Jon Grumer

  9. Observation of an isotope effect in state-selective mutual neutralization of lithium with hydrogen

    Article • Physical Review A, October 2023, American Physical Society (APS)

    Dr Jon Grumer

  10. NLTE spectra of kilonovae

    Article • Monthly Notices of the Royal Astronomical Society, October 2023, Oxford University Press (OUP)

    Dr Jon Grumer

  11. GRASP Manual for Users

    Article • Atoms, April 2023, MDPI AG

    Dr Jon Grumer

  12. Extended MCDHF Calculations of Energy Levels and Transition Data for N i

    Article • The Astrophysical Journal Supplement Series, March 2023, American Astronomical Society

    Dr Jon Grumer

  13. An Introduction to Relativistic Theory as Implemented in GRASP

    Article • Atoms, December 2022, MDPI AG

    Dr Jon Grumer

  14. Titanium abundances in late-type stars

    Article • Astronomy and Astrophysics, December 2022, EDP Sciences

    Dr Jon Grumer

  15. High-precision electron affinity of oxygen

    Article • Nature Communications, October 2022, Springer Science + Business Media

    Dr Jon Grumer

  16. Storage-ring study of the mutual neutralization of N+ with

    Article • Physical Review A, June 2022, American Physical Society (APS)

    Dr Jon Grumer

  17. NLTE effects on kilonova expansion opacities

    Article • Monthly Notices of the Royal Astronomical Society, May 2022, Oxford University Press (OUP)

    Dr Jon Grumer

  18. The GRASP atomic structure code - current status, the CompAS collaboration and hopes for the future

    Article • February 2022, Cassyni

    Dr Jon Grumer

  19. State-Resolved Mutual Neutralization of Mg+ and...

    Article • Physical Review Letters, January 2022, American Physical Society (APS)

    Dr Jon Grumer

  20. On the validity of steady-state for nebular phase kilonovae

    Article • Monthly Notices of the Royal Astronomical Society, December 2021, Oxford University Press (OUP)

    Dr Jon Grumer

  21. Experimental and theoretical studies of excited states in Ir−

    Article • Physical Review A, June 2021, American Physical Society (APS)

    Dr Jon Grumer

  22. Final-state-resolved mutual neutralization of Na ...

    Article • Physical Review A, March 2021, American Physical Society (APS)

    Dr Jon Grumer

  23. Mutual Neutralization in Li++H−/D− and Na++H−/D− Collisions: Implications of Experimental Results for Non-LTE Modeling of Stellar Spectra

    Article • The Astrophysical Journal, February 2021, American Astronomical Society

    Dr Jon Grumer

  24. Mutual neutralisation of O+ with O−: investigation of the role of metastable ions in a combined experimental and theoretical study

    Article • Physical Chemistry Chemical Physics, January 2021, Royal Society of Chemistry

    Dr Jon Grumer

  25. Carbon monoxide formation and cooling in supernovae

    Article • Astronomy and Astrophysics, October 2020, EDP Sciences

    Dr Jon Grumer

  26. Hfszeeman95—A program for computing weak and intermediate magnetic-field- and hyperfine-induced transition rates

    Article • Computer Physics Communications, August 2020, Elsevier

    Dr Jon Grumer

  27. Cryogenic merged-ion-beam experiments in DESIREE: Final-state-resolved mutual neutralization of Li+ and D−

    Article • July 2020, American Physical Society (APS)

    Dr Jon Grumer

  28. A First Spectroscopic Measurement of the Magnetic-field Strength for an Active Region of the Solar Corona

    Article • The Astrophysical Journal Letters, July 2020, American Astronomical Society

    Dr Jon Grumer

  29. Excitation and charge transfer in low-energy hydrogen atom collisions with neutral manganese and titanium

    Article • Astronomy and Astrophysics, May 2020, EDP Sciences

    Dr Jon Grumer

  30. The 3D non-LTE solar nitrogen abundance from atomic lines

    Article • Astronomy and Astrophysics, April 2020, EDP Sciences

    Dr Jon Grumer

  31. Resolving a discrepancy between experimental and theoretical lifetimes in atomic negative ions

    Article • Journal of Physics B Atomic Molecular and Optical Physics, December 2016, Institute of Physics Publishing

    Dr Jon Grumer

  32. ATOMIC-LEVEL PSEUDO-DEGENERACY OF ATOMIC LEVELS GIVING TRANSITIONS INDUCED BY MAGNETIC FIELDS, OF IMPORTANCE FOR DETERMINING THE FIELD STRENGTHS IN THE SOLAR CORONA

    Article • The Astrophysical Journal, August 2016, American Astronomical Society

    Dr Jon Grumer

  33. Energy levels and radiative data for Kr-like W38+from MCDHF and RMBPT calculations

    Article • Journal of Physics B Atomic Molecular and Optical Physics, June 2016, Institute of Physics Publishing

    Dr Jon Grumer

  34. Analysis of the competition between forbidden and hyperfine-induced transitions in Ne-like ions

    Article • March 2016, American Physical Society (APS)

    Dr Jon Grumer

  35. A NOVEL METHOD TO DETERMINE MAGNETIC FIELDS IN LOW-DENSITY PLASMA FACILITATED THROUGH ACCIDENTAL DEGENERACY OF QUANTUM STATES IN Fe9+

    Article • The Astrophysical Journal, July 2015, Institute of Physics Publishing

    Dr Jon Grumer

  36. HYPERFINE-DEPENDENT gf -VALUES OF Mn I LINES IN THE 1.49-1.80 μm H BAND

    Article • The Astrophysical Journal Supplement Series, December 2014, Institute of Physics Publishing

    Dr Jon Grumer

  37. Forbidden-line spectroscopy of the ground-state configuration of Cd-like W

    Article • Physical Review A, November 2014, American Physical Society (APS)

    Dr Jon Grumer

  38. Unexpected transitions induced by spin-dependent, hyperfine and external magnetic-field interactions

    Article • Physica Scripta, November 2014, Institute of Physics Publishing

    Dr Jon Grumer, Dr Martin Andersson

  39. The M1 ground state fine structure transition in Ag-like Yb

    Article • Journal of Physics B Atomic Molecular and Optical Physics, August 2014, Institute of Physics Publishing

    Dr Jon Grumer

  40. Coronal lines and the importance of deep-core–valence correlation in Ag-like ions

    Article • Physical Review A, June 2014, American Physical Society (APS)

    Dr Jon Grumer

  41. Magnetic field induced transition rates in Ne- and Be-like ions for plasma diagnostics and E1M1 two-photon decay rate determination

    Article • Journal of Physics Conference Series, April 2014, Institute of Physics Publishing

    Dr Jon Grumer

  42. Effect of an external magnetic field on the determination of E1M1 two-photon decay rates in Be-like ions

    Article • Physical Review A, August 2013, American Physical Society (APS)

    Professor Stefan Schippers, Dr Jon Grumer

  43. Theoretical investigation of magnetic-field-induced 2 p 5 3 s 3 P 0 , 2 – 2 p 6 1 S 0 transitions in Ne-like ions without nuclear spin

    Article • Physical Review A, July 2013, American Physical Society (APS)

    Dr Jon Grumer

  44. A spectral study of Te V from MCDHF calculations

    Article • Journal of Physics B Atomic Molecular and Optical Physics, April 2013, Institute of Physics Publishing

    Dr Jon Grumer

  45. Experimental and theoretical study of the ground-state M 1 transition in Ag-like tungsten

    Article • Physical Review A, December 2012, American Physical Society (APS)

    Dr Jon Grumer

  46. Hyperfine induced intensity redistribution in In \hbox{\sc II}

    Article • Journal of Physics B Atomic Molecular and Optical Physics, March 2010, Institute of Physics Publishing

    Dr Jon Grumer