NDLI: Quasi-stationary solar wind in ray structures of the streamer belt

Content Provider	Springer Nature Link
Author	Eselevich, V.G. Eselevich, M.V.
Copyright Year	2000
Abstract	It is shown on the basis of analyzing the LASCO/SOHO data that the main quasi-stationary solar wind (SW), with a typical lifetime of up to 10 days, flows in the rays of the streamer belt. Depending on R, its velocity increases gradually from V≈3 km s$^{−1}$ at R≈1.3 R $_{⊙}$ to V≈170 km s$^{−1}$ at R≈15 R $_{⊙}$. We have detected and investigated the movement of the leading edge of the main solar wind at the stage when it occupied the ray, i.e., at the formative stage of a quasi-stationary plasma flow in the ray. It is shown that the width of the leading edge of the main SW increases almost linearly with its distance from the Sun. It is further shown that the initial velocity of the inhomogeneities (`blobs') that travel in the streamer belt rays increases with the distance from the Sun at which they originate, and is approximately equal to the velocity of the main solar wind which carries them away. The characteristic width of the leading edge of the `blob' δ≈R $_{⊙}$, and remains almost unchanging as it moves away from the Sun. Estimates indicate that the main SW in the brightest rays of the streamer belt to within distances at least of order R≈3 R $_{⊙}$ represents a flow of collisional magnetized plasma along a radial magnetic field.
Starting Page	319
Ending Page	332
Page Count	14
File Format	PDF
ISSN	00380938
Journal	Solar Physics
Volume Number	195
Issue Number	2
e-ISSN	1573093X
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2000-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Astrophysics
Content Type	Text
Resource Type	Article
Subject	Astronomy and Astrophysics Space and Planetary Science

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