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Magnetic reconnection in large-scale cosmic plasmas

Abstract

X-ray emitting hot plasmas of a temperature 2–12 keV, associated with galaxy clusters, constitute the most dominant form of baryons in the universe. The plasma is thought to be magnetized at least to 0.1–1 nT, although the β value is relatively high at 10–100. The plasma is confined by gravity of each cluster in a stable manner, but the member galaxies are moving through it with an approximately transonic speed. Therefore, the plasma must be in a magnetohydrodynamically turbulent condition, where frequent magnetic reconnection is expected to take place. Mainly based on observations with the ASCA X-ray Observatory, evidence for such magnetic reconnection is accumulating.

References

  1. Drake, N., M. R. Merrifield, I. Sakelliou, and J. C. Pinkney, X-ray wakes in Abell 160, Mon. Not. R. Astr. Soc., 314, 768–774, 2000.

    Article  Google Scholar 

  2. Dressler, A., A. Oemler, Jr., W. B. Sparks, and R. A. Lucas, New images of the distant, rich cluster CL 0939 + 4713 with WFPC2, Astrophys. J., 435, L23–L26, 1994.

    Article  Google Scholar 

  3. Fabian, A. C., Cooling flows in clusters of galaxies, Ann. Rev. Astr. Astrophys., 32, 277–318, 1994.

    Article  Google Scholar 

  4. Fabian, A. C., K. A. Arnaud, M. W. Bautz, and Y. Tawara, ASCA observations of cooling flows in clusters of galaxies, Astrophys. J., 436, L63-L66, 1994.

    Article  Google Scholar 

  5. Fukazawa, Y. et al., Metal concentration and X-ray cool spectral component in the central region of the Centaurus cluster of galaxies, Pub. Astr. Soc. Japan, 46, L55-L58, 1994.

    Google Scholar 

  6. Fukazawa, Y. et al., Statistical properties of metal abundances of the intracluster medium in the central region of clusters, Mon. Not. R. Astr. Soc., 313, 21–31, 2000.

    Article  Google Scholar 

  7. Fukazawa, Y. et al., Detection of excess hard X-ray emission from the group of galaxies HCG 62, Astrophys. J. Lett., 547, L119-L122, 2001.

    Article  Google Scholar 

  8. Fusco-Femiano, R. et al., Hard X-ray radiation in the Coma cluster spectrum, Astrophys. J., 513, L21-L24, 1999.

    Article  Google Scholar 

  9. Ge, J. and F. N. Owen, Faraday rotation in cooling flow clusters of galaxies. 2: Survey, Astron. J., 108, 1523–1533, 1994.

    Article  Google Scholar 

  10. Ikebe, Y., et al., Structure of the X-Ray—emitting gas in the Hydra A cluster of galaxies, Astrophys. J., 481, 660–672, 1997.

    Article  Google Scholar 

  11. Ikebe, Y., et al., Two-phase intracluster medium in the Centaurus cluster of galaxies, Astrophys. J., 525, 58–79, 1999.

    Article  Google Scholar 

  12. Kaastra, J. S., et al., High- and low-energy nonthermal X-ray emission from the Abell 2199 cluster of galaxies, Astrophys. J., 519, L119-L122, 1999.

  13. Kano, R. and S. Tsuneta, Scaling law of solar coronal loops obtained with Yohkoh, Astrophys. J., 454, 934–944, 1995.

    Article  Google Scholar 

  14. Kronberg, P. P., Extragalactic magnetic fields, Rep. Prog. Phys., 325–382, 1994.

  15. Lieu, R., M. Bonamente, and J. P. D. Mittaz, Extreme-ultraviolet images of the clusters of galaxies A2199 and A1795, Astrophys. J., 517, L91–L95, 1999.

    Article  Google Scholar 

  16. Makishima, K., X-ray probing of the galaxy/cluster interface, in UV and X-ray Spectroscopy of Astrophysical and Laboratory Plasmas, edited by K. Yamashita and T. Watanabe, pp. 167–173, Universal Academy Press, Tokyo, 1996.

    Google Scholar 

  17. Makishima, K., Magnetohydrodynamic interpretations of high-energy phenomena in galaxies and clusters, Plasma Phys. Control. Fusion, 39, A15–A21, 1997a.

    Article  Google Scholar 

  18. Makishima, K., Magnetohydrodynamic (MHD) view of plasmas in galaxies and clusters, in Imaging and Spectroscopy of Cosmic Hot Plasmas, edited by F. Makino and K. Mitsuda, pp. 137–148, Universal Academy Press, Tokyo, 1997b.

    Google Scholar 

  19. Makishima, K., From the sun to the galaxy clusters, in Observational Plasma Astrophysics: Five Years of Yohkoh and Beyond, edited by T. Watanabe, T. Kosugi, and A. Sterling, pp. 51–60, Kluwer Academic, Dordrecht, 1999a.

    Google Scholar 

  20. Makishima, K., Energy non-equipartition processes in the Universe, Astronomische Nachrichten, 320, 161–166, 1999b.

    Article  Google Scholar 

  21. Moore, B., N. Katz, G. Lake, A. Dressler, and A. Oemler, Jr., Galaxy harassment and the evolution of clusters of galaxies, Nature, 379, 613–616, 1996.

    Article  Google Scholar 

  22. Mulchaey, J., D. Davis, R. Mushotzky, and D. Burstein, The intragroup medium in poor groups of galaxies, Astrophys. J., 456, 80–97, 1996.

    Article  Google Scholar 

  23. Ramirez, A. and R. E. de Souza, Shape of the galactic orbits in clusters, Astrophys. J., 496, 693–705, 1998.

    Article  Google Scholar 

  24. Rosner, R., W. Tucker, and G. Vaiana, Dynamics of the quiescent solar corona, Astrophys. J., 643, 643–665, 1978.

    Article  Google Scholar 

  25. Sarazin, C. L., X-Ray Emission from Clusters of Galaxies, Cambridge University Press, 1988.

    Google Scholar 

  26. Sarazin, C. L. and J. Kempner, Nonthermal bremsstrahlung and hard X-ray emission from clusters of galaxies, Astrophys. J., 533, 73–83, 2000.

    Article  Google Scholar 

  27. Sarazin, C. L. and R. Lieu, Extreme-ultraviolet emission from clusters of galaxies, Astrophys. J., 494, L177–L180, 1998.

    Article  Google Scholar 

  28. Takahashi, T. et al, Development of the Hard X-ray Detector for the ASTRO-E mission, Astron. Astrophys. Suppl, 120, 645–648, 1996.

    Google Scholar 

  29. Takeda, M. et al, Extension of the cosmic-ray energy spectrum beyond the predicted GZK cutoff, Phys. Rev. Lett., 81, 1163–1166, 1998.

    Article  Google Scholar 

  30. Tamura, T, K. Makishima, Y. Fukazawa, Y. Ikebe, and H. Xu, X-ray measurements of the gravitational potential profile in the central region of the Abell 1060 cluster of galaxies, Astrophys. J., 535, 602–614, 2000.

    Article  Google Scholar 

  31. Tanaka, Y., H. Inoue, and S. S. Holt, The X-ray astronomy satellite ASCA, Pub. Astr. Soc. Japan, 46, L37–L39, 1994.

    Google Scholar 

  32. Whitmore, B. C. and D. M. Gilmore, What determines the morphological fractions in clusters of galaxies?, Astrophys. J., 407, 489–509, 1993.

    Article  Google Scholar 

  33. Xu, H., K. Makishima, Y. Fukazawa, Y. Ikebe, K. Kikuchi, T. Ohashi, and T. Tamura, Discovery of the central excess brightness in hard X-rays in the cluster of galaxies Abell 1795, Astrophys. J., 500, 738–749, 1998.

    Article  Google Scholar 

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Correspondence to Kazuo Makishima.

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Makishima, K. Magnetic reconnection in large-scale cosmic plasmas. Earth Planet Sp 53, 677–681 (2001). https://doi.org/10.1186/BF03353288

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Keywords

  • Dark Matter
  • Magnetic Reconnection
  • Spiral Galaxy
  • Galaxy Cluster
  • Stellar Mass