Solar Physics

, Volume 240, Issue 2, pp 271–281 | Cite as

Spatial Characterization of a Flare Using Radio Observations and Magnetic Field Topology

  • G. CristianiEmail author
  • G. Martinez
  • C. H. Mandrini
  • C. G. Giménez De Castro
  • C. W. Da Silva
  • M. G. Rovira
  • P. Kaufmann


Using magnetograms, EUV and Hα images, Owens Valley Solar Array microwave observations, and 212-GHz flux density derived from the Solar Submillimeter Telescope data, we determine the spatial characteristics of the 1B/M6.9 flare that occurred on November 28, 2001, starting at 16:26 UT in active region (AR) NOAA 9715. This flare is associated with a chromospheric mass ejection or surge observed at 16:42 UT in the Hα images. We compute the coronal magnetic field under the linear force-free field assumption, constrained by the photospheric data of the Michelson Doppler Imager and loops observed by the Extreme Ultraviolet Imaging Telescope. The analysis of the magnetic field connectivity allows us to conclude that magnetic field reconnection between two different coronal/chromospheric sets of arches was at the origin of the flare and surge, respectively. The optically thick microwave spectrum at peak time shows a shape compatible with the emission from two different sites. Fitting gyrosynchrotron emission to the observed spectrum, we derive parameters for each source.


Flares Relation to magnetic field Magnetic reconnection Observational signatures Radio burst Association with flares Radio burst Dynamic spectrum Surges 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Supplementary material



  1. Alissandrakis, C.E.: 1981, Astron. Astrophys. 100, 197. ADSGoogle Scholar
  2. Bastian, T.S., Benz, A.O., Gary, D.E.: 1998, Annu. Rev. Astron. Astrophys. 36, 131. CrossRefADSGoogle Scholar
  3. Canfield, R.C., Reardon, K.P., Leka, K.D., Shibata, K., Yokoyama, T., Shimojo, M.: 1996, Astrophys. J. 464, 1016. CrossRefADSGoogle Scholar
  4. Costa, J.E.R., Correia, E., Kaufmann, P., Magun, A., Herrmann, R.: 1995, Solar Phys. 159, 157. CrossRefADSGoogle Scholar
  5. Costa, J.E.R., Silva, A.V.R., Lüdi, A., Magun, A.: 2002, Astron. Astrophys. 387, 1153. CrossRefADSGoogle Scholar
  6. Cristiani, G., Martínez, G., Mandrini, C., Giménez de Castro, C., Rovira, M., Kaufmann, P., Levato, H.: 2005, J. Atmos. Solar Terr. Phys. 67(17 – 18), 1744. CrossRefADSGoogle Scholar
  7. Delaboudinière, J.-P., Artzner, G.E., Brunaud, J., Gabriel, A.H., Hochedez, J.F., Millier, F., Song, X.Y., Au, B., Dere, K.P., Howard, R.A., Kreplin, R., Michels, D.J., Moses, J.D., Defise, J.M., Jamar, C., Rochus, P., Chauvineau, J.P., Marioge, J.P., Catura, R.C., Lemen, J.R., Shing, L., Stern, R.A., Gurman, J.B., Neupert, W.M., Maucherat, A., Clette, F., Cugnon, P., van Dessel, E.L.: 1995, Solar Phys. 162, 291. CrossRefADSGoogle Scholar
  8. Démoulin, P., Bagala, L.G., Mandrini, C.H., Hénoux, J.C., Rovira, M.G.: 1997, Astron. Astrophys. 325, 305. ADSGoogle Scholar
  9. Dulk, G.A.: 1985, Annu. Rev. Astron. Astrophys. 23, 169. CrossRefADSGoogle Scholar
  10. Fernández Borda, R.A., Mininni, P.D., Mandrini, C.H., Gómez, D.O., Bauer, O.H., Rovira, M.G. 2002, Solar Phys. 206, 347. CrossRefADSGoogle Scholar
  11. Gaizauskas, V.: 1996, Solar Phys. 169, 357. CrossRefADSGoogle Scholar
  12. Green, L.M., López Fuentes, M.C., Mandrini, C.H., Démoulin, P., van Driel-Gesztelyi, L., Culhane, J.L.: 2002, Solar Phys. 208, 43. CrossRefADSGoogle Scholar
  13. Heyvaerts, J., Priest, E.R., Rust, D.M.: 1977, Astrophys. J. 216, 123. CrossRefADSGoogle Scholar
  14. Hurford, G.J., Read, R.B., Zirin, H.: 1984, Solar Phys. 94, 413. CrossRefADSGoogle Scholar
  15. Jibben, P., Canfield, R.C.: 2004, Astrophys. J. 610, 1129. CrossRefADSGoogle Scholar
  16. Kaufmann, P., Costa, J.E.R., Correia, E., Giménez de Castro, C.G., Raulin, J.-P., Silva, A.V.R.: 2000, Multiple high energy injections at the origin of solar flares. In: Ramaty, R., Mandzhavidze, N. (eds.) High Energy Solar Physics Workshop — Anticipating Hessi, ASP Conf. Ser. 206, 318. Google Scholar
  17. Klein, K.-L., Trottet, G., Magun, A.: 1986, Solar Phys. 104, 243. CrossRefADSGoogle Scholar
  18. Kurokawa, H., Kawai, G.: 1993, In: Zirin, H., Ai, G., Wang, H. (eds.) IAU Colloq. 141: The Magnetic and Velocity Fields of Solar Active Regions, ASP Conf. Ser. 46, 507. Google Scholar
  19. Lüthi, T., Magun, A., Miller, M.: 2004, Astron. Astrophys. 415, 1123. CrossRefADSGoogle Scholar
  20. Lee, J.W., Gary, D.E., Zirin, H.: 1994, Solar Phys. 152, 409. CrossRefADSGoogle Scholar
  21. Mandrini, C.H., Démoulin, P., Schmieder, B., Deng, Y.Y., Rudawy, P.: 2002, Astron. Astrophys. 391, 317. CrossRefADSGoogle Scholar
  22. Mandrini, C.H., Démoulin, P., van Driel-Gesztelyi, L., Schmieder, B., Cauzzi, G., Hofmann, A.: 1996, Solar Phys. 168, 115. CrossRefADSGoogle Scholar
  23. Ramaty, R.: 1969, Astrophys. J. 158, 753. CrossRefADSGoogle Scholar
  24. Ramaty, R., Schwartz, R.A., Enome, S., Nakajima, H.: 1994, Astrophys. J. 436, 941. CrossRefADSGoogle Scholar
  25. Scherrer, P.H., Bogart, R.S., Bush, R.I., Hoeksema, J.T., Kosovichev, A.G., Schou, J., Rosenberg, W., Springer, L., Tarbell, T.D., Title, A., Wolfson, C.J., Zayer, I., MDI Engineering Team: 1995, Solar Phys. 162, 129. CrossRefADSGoogle Scholar
  26. Schmieder, B., Rovira, M., Simnett, G.M., Fontenla, J.M., Tandberg-Hanssen, E.: 1996, Astron. Astrophys. 308, 957. ADSGoogle Scholar
  27. Shibata, K., Nozawa, S., Matsumoto, R.: 1992, Publ. Astron. Soc. Japan 44, 265. ADSGoogle Scholar
  28. Simões, P.J.A., Costa, J.E.R.: 2006, Astron. Astrophys. 453, 729. CrossRefADSGoogle Scholar
  29. Steinolfson, R.S., Wu, S.T., Schmahl, E.J.: 1979, Solar Phys. 63, 187. CrossRefADSGoogle Scholar
  30. Trottet, G., Raulin, J.P., Kaufmann, P., Siarkowski, M., Klein, K.-L., Gary, D.E.: 2002, Astron. Astrophys. 381, 694. CrossRefADSGoogle Scholar

Copyright information

© Springer 2007

Authors and Affiliations

  • G. Cristiani
    • 1
    Email author
  • G. Martinez
    • 1
  • C. H. Mandrini
    • 1
  • C. G. Giménez De Castro
    • 2
  • C. W. Da Silva
    • 2
  • M. G. Rovira
    • 1
  • P. Kaufmann
    • 2
    • 3
  1. 1.Instituto de Astronomía y Física del Espacio, CONICET-UBABuenos AiresArgentina
  2. 2.Centro de Radio Astronomia e Astrofísica MackenzieUniversidade Presbiteriana MackenzieSao PauloBrazil
  3. 3.CCSUniversidade Estadual de CampinasCampinasBrazil

Personalised recommendations