Modeling of the exoplanet HAT-P-11b magnetosphere

Cover Page

Cite item

Full Text

Open Access Open Access
Restricted Access Access granted
Restricted Access Subscription Access

Abstract

Based on the available data on the magnetic field of the star HAT-P-11 and its closest exoplanet HAT-P-11b, as well as information on the stellar wind in this system, we construct the HAT-P-11b magnetic field magnetospheric model. We show how the value and orientation of the interplanetary magnetic field control the magnetospheric structure. Each component of the stellar wind’s magnetic field creates a specific type of reconnection with the exoplanet’s magnetic field.

Full Text

Restricted Access

About the authors

E. S. Belenkaya

Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics (SINP MSU)

Author for correspondence.
Email: elena@dec1.sinp.msu.ru
Russian Federation, Moscow

I. I. Alexeev

Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics (SINP MSU)

Email: iialexeev@mail.ru
Russian Federation, Moscow

V. V. Kalegaev

Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics (SINP MSU)

Email: klg@dec1.sinp.msu.ru
Russian Federation, Moscow

References

  1. L. Ben-Jaffel, G. E. Ballester, A. Garcia Muñoz, P. Lavvas, et al., Nature Astron. 6, 141 (2022).
  2. K. G. Kislyakova, M. Holmström, H. Lammer, P. Odert, and M. L. Khodachenko, Science 346(6212), 981 (2014).
  3. I. Alexeev, E. Belenkaya, V. Kalegaev, and Y. Lutov, J. Geophys. Res. Space Physics 98(A3), 4041 (1993).
  4. I. Alexeev and E. Belenkaya, Ann. Geophysicae 23(3), 809 (2005).
  5. I. Alexeev, V. Kalegaev, E. Belenkaya, S. Bobrovnikov, E. Bunce, S. Cowley, and J. Nichols, Geophys. Res. Letters 33(L08101) (2006).
  6. I. Alexeev, E. Belenkaya, S. Yu. Bobrovnikov, J. Slavin, and M. Sarantos, J. Geophys. Res. Space Physics 113(A12), id. A12210 (2008).
  7. I. Alexeev, E. Belenkaya, J. Slavin, H. Korth, et al., Icarus 209(1), 23 (2010).
  8. E. Belenkaya, M. Alexeev, M. Khodachenko, M. Panchenko, and Blokhina, in: European Planetary Science Congress 2010, held 20–24 September in Rome, Italy; http://meetings.copernicus.org/epsc2010, p.72 .
  9. E. Belenkaya, I. Alexeev, and M. Blokhina, Universe 8(4), id. 231 (2022).
  10. M. Khodachenko, I. Alexeev, E. Belenkaya, J.-M. Grießmeier, et al., in: European Planetary Science Congress 2010, held 20–24 September in Rome, Italy; abstracts 5, http://meetings.copernicus.org/epsc2010, p.85 .
  11. I. I. Alexeev, J. Geomagnetism and Geoelectricity 38(11), 1199 (1986).
  12. I. Alexeev, E. Belenkaya, S. Bobrovnikov, and V. Kalegaev, Space Sci. Rev. 107(1), 7 (2003).
  13. J. D. Nichols and S. E. Milan, Monthly Not. Roy. Astron. Soc. 461(3), 2353 (2016).
  14. J.R. Spreiter and A.Y. Alksne, Ann. Rev. Fluid Mechanics 2, 313 (1970).
  15. B. M. Morris, L. Hebb, J. R. A. Davenport, G. Rohn, and S. L. Hawley, Astrophys. J. 846(2), id. 99 (2017).
  16. P. Diego, M. Piersanti, M. Laurenza, and U. Villante, J. Geophys. Res. Space Physics 125(9), id. e28281 (2020).
  17. C. Russell, D. Baker, and J. Slavin, The magnetosphere of Mercury (Tucson: University of Arizona Press, 1988), p. 514.
  18. E. Belenkaya, J. Geophys. Res. 103(A11), 26487 (1998).
  19. E. Belenkaya, I. Alexeev, J. Slavin, and M. Blokhina, Planet. Space Sci. 75, 46 (2013).

Supplementary files

Supplementary Files
Action
1. JATS XML
Download
2. Fig. 1. Magnetosphere of the exoplanet HAT-P-11b for zero IMF in the noon-midnight section. The model parameters are given in the text of the article, the magnetic moment of the exoplanet is directed to the north. Solid lines show magnetic field lines; dashed line shows magnetopause. The exoplanet is marked with a circle. X and Z coordinates are plotted along the horizontal and vertical axes.

Download (170KB)
Indexing metadata
3. Fig. 2. Same as Fig. 1, but for IMF with components {0, 0, 38} nT. Open magnetosphere of HAT-P-11b for moderate northern IMF. Dashed lines in all figures indicate interplanetary magnetic field lines that have penetrated the magnetosphere (shown by dotted lines).

Download (140KB)
Indexing metadata
4. Fig. 3. The same as in Fig. 2, but for a strong northern IMF: {0, 0, 110} nT.

Download (109KB)
Indexing metadata
5. Fig. 4. Closed magnetosphere of HAT-P-11b with moderate southern IMF: {0, 0, -38} nT.

Download (106KB)
Indexing metadata
6. Fig. 5. The same as in Fig. 4, but for a strong southern IMF: {0, 0, -110} nT.

Download (103KB)
Indexing metadata
7. Fig. 6. Magnetosphere of HAT-P-11b for IMF with negative radial IMF component: {-75, 0, 0} nT.

Download (148KB)
Indexing metadata

Copyright (c) 2024 The Russian Academy of Sciences