Journal of The Korean Astronomical Society (천문학회지)

The Korean Astronomical Society (한국천문학회)
권호 표지
DOI QR코드

DOI QR Code

OBSERVING MAGNETIC FIELDS ON LARGE SCALES

  • Published : 2004.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

Observations of magnetic fields on scales up to several Mpc are important for understanding cluster and large-scale structure evolution. Our current census of such structures is heavily biased - towards fields of several $\mu$G, towards fields in deep potential wells, and towards high inferred field strengths m cooling flow and other clusters from improper analysis of rotation measure data. After reviewing these biases, I show some recent results on two relics that are powered in very different ways. I describe new investigations that are now uncovering weak diffuse fields in the outskirts of clusters and other low density environments, and the good prospects for further progress.

Keywords

References

  1. Bacchi, M., Feretti, L., Giovannini, G., & Govoni, F. 2003,AAp, 400, 465
  2. Bagchi, J., Pislar, V., & Lima Neto, G. B. 1998, MNRAS,296, L23 https://doi.org/10.1046/j.1365-8711.1998.01589.x
  3. Becker, R., White, R. L., & Helfand, D. J. 1995, ApJ, 450, 559 https://doi.org/10.1086/176166
  4. Brand, K., Rawlings, S., Hill, G., Lacy, M., Mitchell, E., &Tufts, J. 2003, MNRAS, 344, 283 https://doi.org/10.1046/j.1365-8711.2003.06824.x
  5. Briel, U., Finogeunov, A., & Henry, J. 2004, MNRAS, 426, 1
  6. Carilli, C., & Taylor, G. 2002, ARA&A, 40, 319 https://doi.org/10.1146/annurev.astro.40.060401.093852
  7. Clarke, T. E., Kronberg, P. P., & B$\ddot{o}$hringer 2001, ApJ, 547, L111 https://doi.org/10.1086/318896
  8. Condon, J. J. 1974, ApJ, 188, 279 https://doi.org/10.1086/152714
  9. Condon, J. J., Cotton, W. D., Greisen, E. W. Yin, Q. F.,Perley, R. A., Taylor, G. B., & Broderick, J. J. 1998, AJ,115, 1693 https://doi.org/10.1086/300337
  10. DeBreuck, C., et al. 2002, A&A, 394, 59 https://doi.org/10.1051/0004-6361:20021115
  11. Durret, F., Lima Neto, G., Forman, W., & Churazov, E.2003, A&A, 403, L29 https://doi.org/10.1051/0004-6361:20030424
  12. Ensslin, T., Vogt, C., Clarke, T. E., & Taylor, G. B. 2003, ApJ, 597, 870 https://doi.org/10.1086/378631
  13. Feretti, L. 2002, in 'The Universe at Low Frequencies,'Proc. of the IAU Symp. 199, eds. ed. A. Pramesh Rao,G. Swarup & Gopal-Krishna, p. 133
  14. Fujita, Y., & Sarazin, C. L. 2001, ApJ 563, 660 https://doi.org/10.1086/324030
  15. Fujita, Y., Sarazin, C., Kempner, J., Andernach, H., Ehle, M., Roy, A., Rudnick, L., & Slee, O., 2002, ApJ, 575,764 https://doi.org/10.1086/341352
  16. Giovannini, G., & Feretti, L. 2002, in Merging Processesin Galaxy Clusters, ed. L. Feretti, I. M. Gioia, G.Giovannini, Astrophysics & Space Science Library, 272,(Kluwer, Dordrecht), p. 197
  17. Hardcastle, M., & Worrall, D. 2000, MNRAS, 519, 362
  18. Katz-Stone, D. M., Rudnick, L., & Anderson, M. C. 1993,ApJ, 407, 549 https://doi.org/10.1086/172536
  19. Kempner, J., & Sarazin, C. L. 2001, ApJ, 548, 639 https://doi.org/10.1086/319024
  20. Kempner, J., Blanton, E., Clarke, T. Ensslin, T., Johnston-Hollitt, M., & Rudnick, L. 2003, in Proc. of The Riddleof Cooling Flows in Galaxies and Clusters of Galaxies,ed. T. Reiprich, J. Kempner, & N. Soker,http://www.astro.virginia.edu/coolflow/
  21. Kempner, J. C., Sarazin, C. L., & Ricker, P. M. 2002, ApJ,579, 236 https://doi.org/10.1086/342748
  22. Kim, K. T., Kronberg, P., Dewdney, P. E., & Landecker, T.L. 1990, ApJ, 335, 29
  23. Kim, K. T., Kronberg, P., Dewdney, P. E., & Landecker, TL. 1994, A&ASS, 105 385
  24. Mazzotta, P., Kaastra, J., Paerels, F., Ferrigno, C., Colafrancesco, S., Mewe, R., & Forman, W. R. 2002, ApJ,567, L37 https://doi.org/10.1086/323512
  25. Morganti, R., Fanti, R., Gioia I. M., Harris, D. E., Parma,P., & de Ruiter, H. 1998, A&A, 189 11
  26. Nicastro, F. 2003, astro-ph/0311162
  27. Perley, R. A., & Carilli, C. L. 1996, in , ed. C. L. Carilli &: D. E. Harris,Cambridge Univ. Press. p. 168
  28. Rengelink, R. B., et al. 1997, A&ApSS, 124, 259
  29. Rudnick, L. 2002, PASP 114, 427 https://doi.org/10.1086/342499
  30. Rudnick, L., & Blundell, K. 2003, ApJ, 588, 143 https://doi.org/10.1086/373891
  31. Rudnick, L., & Blundell, K. 2004, in Proc. of the Riddleof Cooling flows, op cit
  32. Sarazin, C. L. 1988, Cambridge Astrophysics Series. CUP(and http://nedwww.ipac.caltech.edu/leve15/March02/Sarazin/Sarazin-contents.html)
  33. Slee, O. B., Roy, A. L., Murgia, M. Andernach, H., & Ehle,M. 2001, AJ, 122, 1172 https://doi.org/10.1086/322105
  34. Willson, M. A. G. 1970, MNRAS, 151, 1 https://doi.org/10.1093/mnras/151.1.1
  35. Worrall, D., & Birkinshaw, M. 2000, ApJ, 530, 719 https://doi.org/10.1086/308411
  36. Young, A. 2004, in prep. and Ph.D. Thesis, University of Minnesota, 2003

Cited by

  1. THE DISCOVERY OF DIFFUSE RADIO POLARIZATION STRUCTURES IN THE NRAO VERY LARGE ARRAY SKY SURVEY vol.137, pp.1, 2009, https://doi.org/10.1088/0004-6256/137/1/145