Abstract
EUV bi-directional jets are a prominent class of phenomena characterizing the solar transition region. Using simultaneously obtained SUMER observations in the chromospheric Si ii 1251.16 Å and C i 1251.17 Å, transition region N v 1238.8 Å and coronal Mg x 625 Å lines we show an example of a bi-directional jet observed in the chromospheric and the transition region lines but not showing any detectable signature in the coronal line. The phenomenon, however, was also clearly detected by the TRACE imager with the 171 Å filter. This discrepancy is explained here with a non-Maxwellian electron distribution which makes a significant fraction of the plasma in the TRACE 171 Å pass-band to be derived from temperatures around ≈ 300 000 K, as opposed to ≈ 800 000 K. This could have implications for other phenomena observed in the TRACE pass-bands, including the transition region ‘moss’ and the 3- and 5-min oscillations.
Similar content being viewed by others
References
Anderson, S. W., Raymond, J. C., and van Ballegooijen, A.: 1996, Astrophys. J. 457, 939.
Banerjee, D., O'Shea, E., Doyle, J. G., and Goossens, M.: 2001, Astron. Astrophys. 371, 1137.
Chae, J., Wang, H., Lee, C. Y., Goode, P. R., and Schühle, U.: 1998, Astrophys. J. 497, 1109.
Curdt, W. et al.: 2001, Astron. Astrophys. 375, 591.
de Moortel, I., Ireland, J., Walsh, R. W., and Hood, A. W.: 2002, Solar Phys. 209, 61.
Dere, K. P., Bartoe, J.-D. F., and Brueckner, G. E.: 1989, Solar Phys. 123, 41.
Dere, K. P.: 1994, Adv. Space Res. 14, 13.
de Pontieu, B., Berger, T. E., Schrijver, C. J., and Title, A. M.: 1999, Solar Phys. 190, 419.
Doyle, J. G. and Butler, C. J.: 1985, Nat 313, 378.
Doyle, J. G., van den Oord, G. H. J., O'Shea, E., and Banerjee, D.: 1998, Solar Phys. 181, 51.
Doyle, J. G., Dzifćáková, E., and Madjarska, M. S.: 2004, Solar Phys., in press.
Dzifćáková, E.: 2002a, Solar Phys. 208, 91.
Dzifćáková, E.: 2002b, Solar Variability: from Core to Outer Frontiers. The 10th European Solar Physics Meeting, ESA SP-506, Vol. 2, p. 597.
Erdélyi, R., De Pontieu, B., and Sarro, L. M.: 1999, Magnetic Fields and Solar Processes, Florence, Italy, ESA SP-448, 1345.
Fletcher, L. and de Pontieu, B.: 1999, Astrophys. J. 520, 135.
Güdel, M. and Benz, A. O.: 1993, Astrophys. J. 405, 163.
Innes, D. E., Brekke, P., Germerott, D., and Wilhelm, K.: 1997, Solar Phys. 175, 341.
Handy, B. N. et al.: 1999, Solar Phys. 187, 229.
Harrison, R. A. et al.: 1995, Solar Phys. 162, 233.
Lemaire, P. et al.: 1997, Solar Phys. 170, 105.
Madjarska, M. S. and Doyle, J. G.: 2002, Astron. Astrophys. 382, 319.
Maksimovic, M., Pierrard, V., and Riley, P.: 1997, Geophys. Res. Lett. 24, 1151.
Mazzotta, P., Mazzitelli, G., Colafrancesco, S., and Vittorio, N.: 1998, Astron. Astrophys. 133, 403.
Moses, D. and Cook, J. W.: 1994, Space Sci. Rev. 70, 81.
Martens, P. C. H., Kankelborg, C. C., and Berger, T. E.: 2000, Astrophys. J. 537, 471.
Owocki, S. P. and Scudder, J. D.: 1983, Astrophys. J. 270, 758.
Pérez, M. E., Doyle, J. G., Erdélyi, R., and Sarro, L. M.: 1999, Astron. Astrophys. 342, 279.
Raymond, J. C. and Doyle, J. G.: 1981, Astrophys. J. 245, 1141.
Ryutova, M. P. and Tarbell, T. D.: 2000, Astrophys. J. 541, 129.
Schrijver, C. J. et al.: 1999, Solar Phys. 187, 261.
Scudder, J. D.: 1992, Astrophys. J. 398, 319.
Teriaca, L., Madjarska, M. S., and Doyle, J. G.: 2002, Astron. Astrophys. 392, 309.
Wannawichian, S., Ruffolo, D., and Kartavyth, Yu. Yu.: 2003, Astrophys. J. Suppl. 146, 443.
Winebarger, A. R., Updike, A. C., and Reeves, K. K.: 2002, Astrophys. J. 570, 1105.
Wilhelm, K. et al.: 1995, Solar Phys. 162, 189.
Wilhelm, K. et al., 1997, Solar Phys. 170, 75.
Young, P. R., Del Zanna, G., Landi, E., Dere, K. P., Mason, H. E., and Landini, M.: 2003, Astrophys. J. 144, 135.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Doyle, J., Madjarska, M., DzifČÁkovÁ, E. et al. Coronal response of Bi-directional Jets. Solar Physics 221, 51–64 (2004). https://doi.org/10.1023/B:SOLA.0000033354.45889.cc
Issue Date:
DOI: https://doi.org/10.1023/B:SOLA.0000033354.45889.cc