Characterization of Magnetic Flux in the Quiet Sun. II. The Internetwork Fields at High Angular Resolution

2004 ◽  
Vol 613 (1) ◽  
pp. 600-609 ◽  
Author(s):  
B. W. Lites ◽  
H. Socas‐Navarro
1993 ◽  
Vol 141 ◽  
pp. 192-195
Author(s):  
J. Sánchez Almeida ◽  
V. Martínez Pillet ◽  
J. Trujillo Bueno ◽  
B.W. Lites

AbstractStokes I and V profiles of Fel 630.1 nm and Fel 630.2 nm observed in a sunspot with an angular resolution ≥0.5” are analyzed. We find asymmetric V-profiles whose shapes are in agreement with previous determinations having lower angular resolution (~5”). We also find a correlation between penumbral small scale variations of continuum intensity and velocity. Although it involves smaller velocities, such correlation resembles that existing in the quiet sun as a consequence of convection.


2015 ◽  
Author(s):  
Patrick Beukema ◽  
Timothy Verstynen ◽  
Fang-Cheng Yeh

Projections from the substantia nigra and striatum traverse through the pallidum on the way to their targets. To date, in vivo characterization of these pathways remains elusive. Here we used high angular resolution diffusion imaging (N=138) to study the characteristics and structural subcompartments of the human pallidum. Our results show that the diffusion orientation distribution at the pallidum is asymmetrically oriented in a dorsolateral direction, consistent with the orientation of underlying fiber systems. Furthermore, compared to the outer pallidal segment, the internal segment has more peaks in the orientation distribution function and stronger anisotropy in the primary fiber direction, consistent with known cellular differences between the underlying nuclei. These differences in orientation, complexity, and degree of anisotropy are sufficiently robust to automatically segment the pallidal nuclei using diffusion properties. Thus the gray matter diffusion signal can be useful as an in vivo measure of the collective nigrostriatal and striatonigral pathways.


2002 ◽  
Vol 573 (1) ◽  
pp. 431-444 ◽  
Author(s):  
B. W. Lites
Keyword(s):  

2015 ◽  
Vol 650 ◽  
pp. 012016 ◽  
Author(s):  
Shaobo Wang ◽  
Denis Bernard ◽  
Philippe Bruel ◽  
Mickael Frotin ◽  
Yannick Geerebaert ◽  
...  

1996 ◽  
Vol 35 (34) ◽  
pp. 6629 ◽  
Author(s):  
Ning Wang ◽  
T. R. Hunter ◽  
D. J. Benford ◽  
E. Serabyn ◽  
D. C. Lis ◽  
...  

2012 ◽  
Vol 23 (7) ◽  
pp. 074015 ◽  
Author(s):  
F Siewert ◽  
J Buchheim ◽  
T Höft ◽  
S Fiedler ◽  
G Bourenkov ◽  
...  

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