Abstract
We discuss a method, and corresponding results, to analyze the dynamics of localized small-scale coronal (post-flare) loops observed with the MICA (Mirror Coronagraph for Argentina) telescope in the well-known green coronal line at 530.3 nm. In particular, we designed a procedure to measure intensity variations along the structure of a loop, both in space and time. The method was applied to a loop on the southwest limb on green-line images taken on October 1st, 2001 with a cadence of about one per minute. Significant coronal variability was detected in a compact loop system suggesting different types of plasma flow. One of them shows a brightening at the top, which moves down along the axis of the loop with mean velocities that suggest scenarios of high-speed plasma flows. The results obtained allow the flow inside coronal structures to be characterized and theoretical descriptions related to different physical scenarios to be compared.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Arber, T. D., Longbottom, A. W., and van der Lenden R. A. M.: 1999, Astrophys. J. 517, 990.
Arnaud, J. and Rothenflug, R.: 1985, Astron. Astrophys. Suppl. Ser. 60, 425.
Aschwanden, M. J., Schrijver, C. J., Alexander, D.: 2001, Astrophys. J. 550
Aschwanden, M. J., Newmark, J. S., Delaboudiniere, J-P., Neupert, W. N., Klimchuk, J. A., Gary, G. A., Portier-Fozzani, F., and Zucker, A.: 1999, Astrophys. J. 515, 842.
Aschwanden, M. J., Alexander, D., Hurlburt, N., Newmark, J. S., Neupert, W. N., Klimchuk, J. A., and Gary, G. A.: 2000, Astrophys. J. 531, 1129.
Brekke, P., Kjeldseth-Moe, O., and Harrison, R. A.: 1997, Solar Phys. 175, 511.
Brueckner, G. E., Howard R. A., Koomen M. J. et al.: 1995, Solar Phys. 162, 357.
Delaboudiniere, J.-P.; Artzner, G. E.; Brunaud, J. et al.: 1995, Solar Phys. 162, 291.
Démoulin, P., van Driel-Gesztelyi, L., Mandrini, C. H., Klimchuk, J. A., and Harra, L.: 2003, Astrophys. J. 586, 592.
Eddy, J. A.: 1979, 'A New Sun: The Solar Results from Skylab', edited by Ise, R., NASA SP-402-Washington, D.C.
Gabriel, A. H. and Jordan, C.: 1975, Monthly Notices Royal Astron. Soc. 173, 397.
Gómez, D., Sicardi Schifino, A., and Ferro Fontán, C.: 1990a, Astrophys. J. 326, 318.
Gómez, D., Sicardi Schifino, A., and Ferro Fontán, C.: 1990b,Astrophys. J. 352, 318.
Kano, R. and Tsuneta, S.: 1996, PASJ 48, 535.
Handy, B. N., Acton, L. W., and Kankelborg, C. C.: 1999, Solar Phys. 184, 229.
Harrison, R. A., Sawyer, E. C., and Carter, M. K.: 1995, Solar Phys. 162, 233.
Kjeldseth-Moe, O. and Brekke, P.: 1998, Solar Phys. 182, 73.
Lenz, D. D., DeLuca E. E., Golub, L., Rosner R., and Bookbinder, J. A.: 1999, Astrophys. J. 517, L155.
Mandrini, C. H., Démoulin, P., and Klimchuk, J. A.: 2000, Astrophys. J. 530, 599.
Orlando, S., Peres, G., and Serio, S. A.: 1995a, Astron. Astrophys. 294, 861.
Orlando, S., Peres, G., and Serio, S. A., 1995b, Astron. Astrophys. 300, 549.
Porter, L. J. and Klimchuk, J. A.: 1995, Astrophys. J. 454, 499.
Schrijver, C. J.: 2001, Solar Phys. 198, 325.
Serio, S., Peres, G., Vaiana, G. S., Golub, L., and Rosner, R.: 1981, Astrophys. J. 243, 288.
Schwenn, R., Inhester, B., Plunkett, S. P. et al.: 1997, Solar Phys. 175, 667.
Sheeley, N. R.: 1980, Solar Phys. 66, 79.
Stenborg, G.: 2000, PhD Thesis, Goettingen University, Germany.
Stenborg, G., Schwenn, R., Srivastava, N., Inhester, B., Podlipnik, B., Rovira, M., and Francile, C.: 1999, Space Sci. Rev. 87, 307.
Walsh, R. W. and Galtier, S.: 2000, Solar Phys. 197, 57.
Winebarger, A. R., Warren, H., Van Ballegooijen, A., DeLuca, E. E., and Golub, L.: 2002, Astrophys. J. L89, 567.
Wood, J. W., Karakovska, M., Cook, J. W., Brueckner G. E., Howard, R. A., Korendyke, C. M., and Socker, D. G.: 1998, Astrophys. J. 505, 432.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Costa, A., Stenborg, G. Characterization of Intensity Variations Along Fe XIV Coronal Loops – A Case Study. Solar Physics 222, 229–245 (2004). https://doi.org/10.1023/B:SOLA.0000043570.97010.b7
Issue Date:
DOI: https://doi.org/10.1023/B:SOLA.0000043570.97010.b7