Non‐dipolar solar wind structure observed in the cycle 23/24 minimum
نویسندگان
چکیده
منابع مشابه
Solar origins of solar wind properties during the cycle 23 solar minimum and rising phase of cycle 24
The solar wind was originally envisioned using a simple dipolar corona/polar coronal hole sources picture, but modern observations and models, together with the recent unusual solar cycle minimum, have demonstrated the limitations of this picture. The solar surface fields in both polar and low-to-mid-latitude active region zones routinely produce coronal magnetic fields and related solar wind s...
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The solar corona expands non-uniformly into space as a supersonic plasma outflow known as the solar wind (Parker 1958). The solar wind carries signatures of coronal dynamics as well as locally generated turbulent phenomena, which span a broad range of scales. In situ spacecraft observations of fluctuations in solar wind parameters such as velocity and magnetic field (for example, Ruzmaikin et a...
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Using polarized brightness (pB) measurements made by the High Altitude Observatory (HAO) Mauna Loa Mk III K-coronameter, we investigate the daily changes of path-integrated density at 1.15 R,. During 1996, when simultaneous pB and helioseismology data were available, we find that the correlation of pB (at zero time lag and 207 latitude lag) varies with latitude in the same way that the subsurfa...
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We analyze a time series of high angular resolution magnetograms of quiet Sun Inter-Network (IN) magnetic fields. These magnetograms have a spatial resolution better than 0. 5, a noise of some 20 G, and they have been obtained at the disk center during the minimum of the solar cycle. The IN regions show a typical unsigned flux density of the order of 15 G. Signals occur, preferentially, in the ...
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We calculated the change of the magnetic flux through the surface encircled by the Earth’s orbit. This change is associated with the magnetic flux transfer by the solar wind flow and exhibits clear 22-year periodicity. The magnetic flux transferred by the solar wind is of the same order of magnitude as the flux of the main solar magnetic field through the northern hemisphere of the Sun. There s...
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ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 2009
ISSN: 0094-8276
DOI: 10.1029/2009gl037461