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  • Open Access

Resonant Axion-Plasmon Conversion in Neutron Star Magnetospheres

H. Terças1,2,*, J. T. Mendonça2, and R. Bingham3,4

  • *Contact author: hugo.tercas@isel.pt
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Phys. Rev. Lett. 135, 111001 – Published 9 September, 2025

DOI: https://doi.org/10.1103/5hbb-yy48

Abstract

Resonant axion-plasmon conversion in the magnetospheres of magnetars may substantially impact the landscape of dark-matter axion detection. This Letter explores how resonant axion-plasmon conversion modify the expected radio signals from axion-photon conversions observed on Earth. Critically, the resonant conversion radius lies within the region expected for axion-photon conversion, introducing a nonradiative power loss that diminishes the anticipated photon flux. Our analysis demonstrates that this effect can reduce radio telescope sensitivities, shifting them into regions excluded by previous experiments. These findings compel a reassessment of experimental constraints derived from radio signatures of axion-photon conversions and highlight the necessity of accounting for plasmon effects in astrophysical axion searches. The presented corrections provide critical insights for refining the detection strategies of future telescope-based dark matter axion experiments.

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References (81)

  1. A. Alavi-Harati et al. (KTeV Collaboration), Phys. Rev. Lett. 83, 22 (1999).
  2. J. H. Christenson, J. W. Cronin, V. L. Fitch, and R. Turlay, Phys. Rev. Lett. 13, 138 (1964).
  3. N. Cabibbo, Phys. Rev. Lett. 10, 531 (1963).
  4. M. Gell-Mann and M. Lévy, Nuovo Cimento 16, 705 (1960).
  5. B. Pontecorvo, Zh. Eksp. Teor. Fiz. 34, 247 (1957) [Sov. Phys. JETP 7, 172 (1958)].
  6. J. M. Pendlebury et al., Phys. Rev. D 92, 092003 (2015).
  7. R. D. Peccei and H. R. Quinn, Phys. Rev. Lett. 38, 1440 (1977).
  8. J. E. Kim and G. Carosi, Rev. Mod. Phys. 82, 557 (2010).
  9. S. Weinberg, Phys. Rev. Lett. 40, 223 (1978).
  10. J. Preskill, M. B. Wise, and F. Wilczek, Phys. Lett. 120B, 127 (1983).
  11. L. Abbott and P. Sikivie, Phys. Lett. 120B, 133 (1983).
  12. M. Dine and W. Fischler, Phys. Lett. 120B, 137 (1983).
  13. P. Sikivie, Phys. Rev. Lett. 51, 1415 (1983).
  14. S. J. Asztalos, G. Carosi, C. Hagmann, D. Kinion, K. van Bibber, M. Hotz, L. J. Rosenberg, G. Rybka, J. Hoskins, J. Hwang, P. Sikivie, D. B. Tanner, R. Bradley, and J. Clarke, Phys. Rev. Lett. 104, 041301 (2010).
  15. K. Zioutas et al. (CAST Collaboration), Phys. Rev. Lett. 94, 121301 (2005).
  16. M. Fairbairn, T. Rashba, and S. Troitsky, Phys. Rev. Lett. 98, 201801 (2007).
  17. D. S. Akerib et al. (LUX Collaboration), Phys. Rev. Lett. 118, 261301 (2017).
  18. E. Zavattini, G. Zavattini, G. Ruoso, E. Polacco, E. Milotti, M. Karuza, U. Gastaldi, G. Di Domenico, F. Della Valle, R. Cimino, S. Carusotto, G. Cantatore, and M. Bregant (PVLAS Collaboration), Phys. Rev. Lett. 96, 110406 (2006).
  19. A. Ejlli, F. Della Valle, U. Gastaldi, G. Messineo, R. Pengo, G. Ruoso, and G. Zavattini, Phys. Rep. 871, 1 (2020), The PVLAS experiment: A 25 year effort to measure vacuum magnetic birefringence.
  20. CAST Collaboration, Nat. Phys. 13, 584 (2017).
  21. S. Asztalos, E. Daw, H. Peng, L. J. Rosenberg, C. Hagmann, D. Kinion, W. Stoeffl, K. van Bibber, P. Sikivie, N. S. Sullivan, D. B. Tanner, F. Nezrick, M. S. Turner, D. M. Moltz, J. Powell, M.-O. André, J. Clarke, M. Mück, and R. F. Bradley, Phys. Rev. D 64, 092003 (2001).
  22. S. J. Asztalos, G. Carosi, C. Hagmann, D. Kinion, K. van Bibber, M. Hotz, L. J. Rosenberg, G. Rybka, J. Hoskins, J. Hwang, P. Sikivie, D. B. Tanner, R. Bradley, and J. Clarke, Phys. Rev. Lett. 104, 041301 (2010).
  23. N. Du et al. (ADMX Collaboration), Phys. Rev. Lett. 120, 151301 (2018).
  24. J. Vogel, E. Armengaud, F. Avignone, M. Betz, P. Brax, P. Brun, G. Cantatore, J. Carmona, G. Carosi, F. Caspers et al., Phys. Procedia 61, 193 (2015).
  25. A. Caldwell, G. Dvali, B. Majorovits, A. Millar, G. Raffelt, J. Redondo, O. Reimann, F. Simon, and F. Steffen (MADMAX Working Group), Phys. Rev. Lett. 118, 091801 (2017).
  26. A. Di Piazza, C. Müller, K. Z. Hatsagortsyan, and C. H. Keitel, Rev. Mod. Phys. 84, 1177 (2012).
  27. S. P. D. Mangles, C. D. Murphy, Z. Najmudin, A. G. R. Thomas, J. L. Collier, A. E. Dangor, E. J. Divall, P. S. Foster, J. G. Gallacher, C. J. Hooker, D. A. Jaroszynski, A. J. Langley, W. B. Mori, P. A. Norreys, F. S. Tsung, R. Viskup, B. R. Walton, and K. Krushelnick, Nature (London) 431, 535 (2004).
  28. C. G. R. Geddes, C. Toth, J. van Tilborg, E. Esarey, C. B. Schroeder, D. Bruhwiler, C. Nieter, J. Cary, and W. P. Leemans, Nature (London) 431, 538 (2004).
  29. J. Faure, Y. Glinec, A. Pukhov, S. Kiselev, S. Gordienko, E. Lefebvre, J.-P. Rousseau, F. Burgy, and V. Malka, Nature (London) 431, 541 (2004).
  30. E. Adli et al., Nature (London) 561, 363 (2018).
  31. D. A. Burton and A. Noble, New J. Phys. 20, 033022 (2018).
  32. D. A. Burton and A. Noble, J. Phys. A 43, 075502 (2010).
  33. D. A. Burton, A. Noble, and T. J. Walton, J. Phys. A 49, 385501 (2016).
  34. K. A. Beyer, G. Marocco, R. Bingham, and G. Gregori, Phys. Rev. D 101, 095018 (2020).
  35. K. A. Beyer, G. Marocco, R. Bingham, and G. Gregori, Phys. Rev. D 105, 035031 (2022).
  36. K. Beyer, G. Marocco, C. Danson, R. Bingham, and G. Gregori, Phys. Lett. B 839, 137759 (2023).
  37. J. W. D. Halliday et al., Phys. Rev. Lett. 134, 055001 (2025).
  38. A. Mirizzi, G. G. Raffelt, and P. D. Serpico, Photon-axion conversion in intergalactic magnetic fields and cosmological consequences, in Axions: Theory, Cosmology, and Experimental Searches, edited by M. Kuster, G. Raffelt, and B. Beltrán (Springer, Berlin, Heidelberg, 2008), pp. 115–134.
  39. C. Wang and D. Lai, J. Cosmol. Astropart. Phys. 06 (2016) 006.
  40. E. Masaki, A. Aoki, and J. Soda, Phys. Rev. D 96, 043519 (2017).
  41. A. Hook, Y. Kahn, B. R. Safdi, and Z. Sun, Phys. Rev. Lett. 121, 241102 (2018).
  42. J. W. Foster, Y. Kahn, O. Macias, Z. Sun, R. P. Eatough, V. I. Kondratiev, W. M. Peters, C. Weniger, and B. R. Safdi, Phys. Rev. Lett. 125, 171301 (2020).
  43. S. J. Witte, D. Noordhuis, T. D. P. Edwards, and C. Weniger, Phys. Rev. D 104, 103030 (2021).
  44. A. J. Millar, S. Baum, M. Lawson, and M. D. Marsh, J. Cosmol. Astropart. Phys. 11 (2021) 013.
  45. J. H. Buckley, P. S. B. Dev, F. Ferrer, and F. P. Huang, Phys. Rev. D 103, 043015 (2021).
  46. C. Dessert, D. Dunsky, and B. R. Safdi, Phys. Rev. D 105, 103034 (2022).
  47. J. De Miguel and C. Otani, Phys. Rev. D 106, L041302 (2022).
  48. D. Noordhuis, A. Prabhu, S. J. Witte, A. Y. Chen, F. Cruz, and C. Weniger, Phys. Rev. Lett. 131, 111004 (2023).
  49. H. Seong, C. Sun, and S. Yun, Phys. Rev. D 110, 015018 (2024).
  50. E. Todarello and J. Ruz, Proc. Sci. COSMICWISPers2024 (2025) 030 [arXiv:2501.15960].
  51. E. Asseo, R. Pellat, and M. Rosado, Astrophys. J. 239, 661 (1980).
  52. K. van Bibber, P. M. McIntyre, D. E. Morris, and G. G. Raffelt, Phys. Rev. D 39, 2089 (1989).
  53. G. Raffelt and L. Stodolsky, Phys. Rev. D 37, 1237 (1988).
  54. M. S. Pshirkov and S. B. Popov, J. Exp. Theor. Phys. 108, 384 (2009).
  55. S. Sen, Phys. Rev. D 98, 103012 (2018).
  56. L. Visinelli, Mod. Phys. Lett. A 28, 1350162 (2013).
  57. F. Wilczek, Phys. Rev. Lett. 58, 1799 (1987).
  58. M. J. Neves, J. B. de Oliveira, L. P. R. Ospedal, and J. A. Helayël-Neto, Phys. Rev. D 104, 015006 (2021).
  59. H. Terças, J. D. Rodrigues, and J. T. Mendonça, Phys. Rev. Lett. 120, 181803 (2018).
  60. J. Lundin, G. Brodin, and M. Marklund, Phys. Plasmas 13, 102102 (2006).
  61. See Supplemental Material at http://link.aps.org/supplemental/10.1103/5hbb-yy48 for details on the QED effects and on the derivation of the axion-plasmon conversion, which includes Refs. [63–68].
  62. H. Euler and B. Kockel, Naturwissenschaften 23, 246 (1936), original derivation of nonlinear QED effects.
  63. W. Heisenberg and H. Euler, Z. Phys. 98, 714 (1936).
  64. J. Schwinger, Phys. Rev. 82, 664 (1951).
  65. C. Itzykson and J.-B. Zuber, Quantum Field Theory (McGraw-Hill, New York, 1980).
  66. G. V. Dunn, Heisenberg-Euler effective Lagrangians: Basics and extensions, in From Fields to Strings: Circumnavigating Theoretical Physics (World Scientific, Singapore, 2005).
  67. M. V. Medvedev, Phys. Plasmas 30, 092112 (2023).
  68. T. Erber, Rev. Mod. Phys. 38, 626 (1966).
  69. C. Thompson and R. C. Duncan, Mon. Not. R. Astron. Soc. 275, 255 (1995).
  70. A. M. Beloborodov, Astrophys. J. 777, 114 (2013).
  71. J. K. Daugherty and A. K. Harding, Astrophys. J. 273, 761 (1983).
  72. S. L. Adler, Ann. Phys. (N.Y.) 67, 599 (1971), Eq. (5.25) shows the decoupling of longitudinal modes from pair creation.

  73. The terms plasmon and polariton should not be confused with polarons—quasiparticles that emerge from electron-phonon coupling in condensed matter systems [74].

  74. J. Appel, Polarons, in Solid State Physics (Elsevier, New York, 1968).
  75. P. Goldreich and W. H. Julian, Astrophys. J. 157, 869 (1969).
  76. R. A. Cairns, Phys. Fluids 25, 1605 (1982).
  77. R. A. Cairns and C. N. Lashmore-Davies, Phys. Fluids 26, 1268 (1983).
  78. E. Whittaker, A Course of Modern Analysis (Cambridge Mathematical Library) (Cambridge University Press, Cambridge, England, 1996).
  79. N. Song, L. Su, and L. Wu, Phys. Rev. D 111, 043025 (2025).
  80. J. A. Kennea, D. N. Burrows, C. Kouveliotou, D. M. Palmer, E. Göǧüş, Y. Kaneko, P. A. Evans, N. Degenaar, M. T. Reynolds, J. M. Miller, R. Wijnands, K. Mori, and N. Gehrels, Astrophys. J. 770, L24 (2013).
  81. N. Brahma and K. Schutz, J. High Energy Phys. 12 (2024) 191.

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Phys. Rev. Lett. 135, 111001– Published 9 September, 2025
  • Received 19 March 2025
  • Revised 15 July 2025
  • Accepted 15 August 2025
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