T. L. Zhang

Space Research Institute

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Mirror waves and mode transition observed in the magnetosheath by Double Star TC-1

Annales Geophysicae (2009)

J. Du Chi Wang T. L. Zhang M. Volwerk C. Carr

Abstract. The Double Star TC-1 magnetosheath pass on 26 February 2004 is used to investigate magnetic field fluctuations. Strong compressional signatures which last for more than an hour have been found near the magnetopause behind a quasi-perpendicular bow shock. These compressional structures are most likely mirror mode waves. There is a clear wave transition in the magnetosheath which probably results from the change of the interplanetary magnetic field (IMF) cone angle. The wave characteristics in the magnetosheath are strongly controlled by the type of the upstream bow shock.

Magnetosheath

Bow wave

10.5194/angeo-27-351-2009

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Citations (4)

The effect of foreshock on the motion of the dayside magnetopause

Geophysical Research Letters (1997)

C. T. Russell S. M. Petrinec T. L. Zhang Pu Song Hideaki Kawano

The role of the foreshock or quasi parallel shock in causing motions of the magnetopause is studied using both the number of crossings of the magnetopause found as ISEE 1 and 2 passed through the expected region of the magnetopause on each orbit and by determining the minimum and maximum distances to the magnetopause on each pass. Downstream of the afternoon magnetosheath and bow shock, a region free from foreshock effects for typical interplanetary magnetic field (IMF) directions, the north‐south component of the IMF controls these motions. On the morning side additional oscillation in the magnetopause position is found for both northward and southward IMF. We interpret these increased motions as driven by the pressure variations in and behind the foreshock region or quasi‐parallel shock. These results are consistent with other studies of foreshock effects on the magnetosphere which show little effect on erosion of the magnetopause or flux transfer event occurrence.

Magnetosheath

10.1029/97gl01408

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Citations (33)

The Return of Asteroid 2201 Oljato to Venus Conjunction: New IFEs?

European Planetary Science Congress 2012 (2012)

Hairong Lai T. L. Zhang

Conjunction (astronomy)

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Low-frequency fluctuations in the magnetosheath: Double Star TC-1 and Cluster observations