North-south flows at 47 AU: A heliospheric vortex street?

North - south flows at 47 AU : A heliospheric vortex street ?

A north-south flow pattern with a recurrence period approximately equal to the solar rotation period was observed by Voyager 2 during 1995 at 47 AU, nearly a solar cycle after the north-south flows were first observed near 21 AU during 1986. The north-south flow deflections observed during 1995 were less regular than those observed in 1986. One finds the same qualitative associations between th...

Vortex Flows at Supersonic Speeds

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North-south asymmetry of the location of the heliospheric current sheet revisited

[1] The possible latitudinal offset of the location of the heliospheric current sheet (HCS) is an important question, since it has impact on the understanding of various phenomena including the solar dynamo and the modulation of cosmic rays. In the declining phase of the previous, 22nd solar cycle, in 1993, a southward displacement of the HCS by 10 was proposed to explain the north-south asymme...

Prediction and understanding of the north-south displacement of the heliospheric current sheet

Based on WSO observations of the photospheric magnetic field and the potential field-source surface (PFSS) model, we compare the solid angles occupied by the positive source surface field with that of the negative. We develop an algorithm to quantitatively estimate and understand the positive-negative displacement of the heliospheric current sheet (HCS) about Sun’s magnetic dipole equator and t...

North–north, North–south, and South–south Relations