Remember Me
Or use your Academic/Social account:


Or use your Academic/Social account:


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.


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


Verify Password:
Verify E-mail:
*All Fields Are Required.
Please Verify You Are Human:
fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Hu, R. (Ren-Yu); Bogdanova, Y. V.; Owen, C. J. (Christopher J.); Foullon, C. (Claire); Fazakerley, A. N.; Rème, H. (2008)
Publisher: American Geophysical Union
Languages: English
Types: Article
Subjects: QB

Classified by OpenAIRE into

arxiv: Physics::Space Physics, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Galaxy Astrophysics
We report on a multispacecraft cusp observation lasting more than 100 min. We\ud determine the cusp boundary motion and reveal the effect on the cusp size of the\ud interplanetary magnetic field (IMF) changing from southward to northward. The cusp\ud shrinks at the beginning of the IMF rotation and it reexpands at the rate of 0.40°\ud invariant latitude per hour under stable northward IMF. On the basis of plasma signatures\ud inside the cusp, such as counterstreaming electrons with balanced fluxes, we propose\ud that pulsed dual lobe reconnection operates during the time of interest. SC1 and\ud SC4 observations suggest a long-term regular periodicity of the pulsed dual reconnection,\ud which we estimate to be ~1–5 min. Further, the distances from the spacecraft to\ud the reconnection site are estimated on the basis of observations from three satellites. The\ud distance determined using SC1 and SC4 observations is ~15 RE and that determined\ud from SC3 data is ~8 RE. The large-scale speed of the reconnection site sunward motion is\ud ~16 km s-1. We observe also a fast motion of the reconnection site by SC1, which\ud provides new information about the transitional phase after the IMF rotation. Finally, a\ud statistical study of the dependency of plasma convection inside the cusp on the IMF clock\ud angle is performed. The relationship between the cusp stagnation, the dual lobe\ud reconnection process, and the IMF clock angle is discussed.

Share - Bookmark

Cite this article