LOGIN TO YOUR ACCOUNT

Username
Password
Remember Me
Or use your Academic/Social account:

CREATE AN ACCOUNT

Or use your Academic/Social account:

Congratulations!

You have just completed your registration at OpenAire.

Before you can login to the site, you will need to activate your account. An e-mail will be sent to you with the proper instructions.

Important!

Please note that this site is currently undergoing Beta testing.
Any new content you create is not guaranteed to be present to the final version of the site upon release.

Thank you for your patience,
OpenAire Dev Team.

Close This Message

CREATE AN ACCOUNT

Name:
Username:
Password:
Verify Password:
E-mail:
Verify E-mail:
*All Fields Are Required.
Please Verify You Are Human:
fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Vasheghani Farahani, Soheil; Van Doorsselaere, Tom; Verwichte, E. (Erwin); Nakariakov, V. M. (Valery M.) (2009)
Publisher: EDP Sciences
Languages: English
Types: Article
Subjects: QB

Classified by OpenAIRE into

arxiv: Physics::Space Physics, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::High Energy Astrophysical Phenomena
Aims. The theoretical model for magnetohydrodynamic (MHD) modes guided by a field-aligned plasma cylinder with a steady flow is adapted to interpret transverse waves observed in solar coronal hot jets, discovered with Hinode/XRT in terms of fast magnetoacoustic kink modes.\ud Methods. Dispersion relations for linear magnetoacoustic perturbations of a plasma jet of constant cross-section surrounded by static magnetised plasma are used to determine the phase and group speeds of guided transverse waves and their relationship with the physical parameters of the jet and the background plasma. The structure of the perturbations in the macroscopic parameters of the plasma inside and outside the jet, and the phase relations between them are also established.\ud Results. We obtained a convenient expansion for the long wave-length limit of the phase and group speeds and have shown that transverse waves observed in soft-X-ray solar coronal jets are adequately described in terms of fast magnetoacoustic kink modes by a magnetic cylinder model, which includes the effect of a steady flow. In the observationally determined range of parameters, the waves\ud are not found to be subject to either the Kelvin-Helmholtz instability or the negative energy wave instability, and hence they are likely to be excited at the source of the jet.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • Alexander, D., & Fletcher, L. 1999, Sol. Phys., 190, 167 Aschwanden, M. J., Fletcher, L., Schrijver, C. J., & Alexander, D. 1999, ApJ, 520, 880
    • Cirtain, J. W., Golub, L., Lundquist, L., et al. 2007, Science, 318, 1580 Cooper, F. C., Nakariakov, V. M., & Williams, D. R. 2003, A&A, 409, 325 Culhane, L., Harra, L. K., Baker, D., et al. 2007, PASJ, 59, 751 Edwin, P. M., & Roberts, B. 1983, Sol. Phys., 88, 179 Ferrari, A., Trussoni, E., & Zaninetti, L. 1981, MNRAS, 196, 1051 Golub, L., Deluca, E., Austin, G., et al. 2007, Sol. Phys., 243, 63 Goossens, M., Hollweg, J. V., & Sakurai, T. 1992, Sol. Phys., 138, 233 Joarder, P. S., Nakariakov, V. M., & Roberts, B. 1997, Sol. Phys., 176, 285 Koutchmy, S., Zhugzhda, I. D., & Locans, V. 1983, A&A, 120, 185 Murawski, K., & Roberts, B. 1994, Sol. Phys., 151, 305 Murray, M. J., van Driel-Gesztelyi, L., & Baker, D. 2009, A&A, 494, 329 Nakariakov, V. M., & Roberts, B. 1995, Sol. Phys., 159, 213 Nakariakov, V. M., Roberts, B., & Mann, G. 1996, A&A, 311, 311 Nakariakov, V. M., Ofman, L., Deluca, E. E., Roberts, B., & Davila, J. M. 1999, Science, 285, 862
    • Nishizuka, N., Shimizu, M., Nakamura, T., et al. 2008, ApJ, 683, L83 Ofman, L., & Wang, T. J. 2008, A&A, 482, L9 Roberts, B., Edwin, P. M., & Benz, A. O. 1984, ApJ, 279, 857 Ruderman, M. S., Verwichte, E., Erdelyi, R., & Goossens, M. 1996, J. Plasma Phys., 56, 285
    • Shibata, K., Ishido, Y., Acton, L. W., et al. 1992, PASJ, 44, L173 Shimojo, M., Hashimoto, S., Shibata, K., et al. 1996, PASJ, 48, 123 Terra-Homem, M., Erdélyi, R., & Ballai, I. 2003, Sol. Phys., 217, 199 Tomczyk, S., McIntosh, S. W., Keil, S. L., et al. 2007, Science, 317, 1192 Van Doorsselaere, T., Brady, C. S., Verwichte, E., & Nakariakov, V. M. 2008, A&A, 491, L9
    • Verwichte, E., Nakariakov, V. M., & Cooper, F. C. 2005, A&A, 430, L65 Williams, D. R., Phillips, K. J. H., Rudawy, P., et al. 2001, MNRAS, 326, 428 Yokoyama, T., & Shibata, K. 1995, Nature, 375, 42
  • No related research data.
  • No similar publications.

Share - Bookmark

Cite this article