Spatial variation of Joule heating and its relationship with the motion of polar cap boundary

2011 ◽  
Author(s):  
Kalafatoglu Oner ◽  
Emine Ceren ◽  
Zerefsan Kaymaz
Keyword(s):  
Spatial Variation ◽  
Joule Heating ◽  
Polar Cap

scholarly journals Relationship between the Northern Hemisphere Joule heating and geomagnetic activity in the southern polar cap

2000 ◽  
Vol 105 (A12) ◽  
pp. 27167-27177 ◽  
Author(s):  
P. Ballatore ◽  
L. J. Lanzerotti ◽  
G. Lu ◽  
D. J. Knipp
Keyword(s):  
Northern Hemisphere ◽  
Geomagnetic Activity ◽  
Joule Heating ◽  
Polar Cap

scholarly journals Polar cap index as a proxy for hemispheric Joule heating

1999 ◽  
Vol 26 (8) ◽  
pp. 1101-1104 ◽  
Author(s):  
Francis K. Chun ◽  
Delores J. Knipp ◽  
Matthew G. McHarg ◽  
Gang Lu ◽  
Barbara A. Emery ◽  
...  
Keyword(s):  
Joule Heating ◽  
Polar Cap

A large rotating structure around AB Doradus A at VLBI scale

2019 ◽  
Vol 15 (S354) ◽  
pp. 189-194
Author(s):  
J. B. Climent ◽  
J. C. Guirado ◽  
R. Azulay ◽  
J. M. Marcaide
Keyword(s):  
Magnetic Reconnection ◽  
Main Sequence ◽  
Complex Structure ◽  
Main Sequence Star ◽  
Polar Cap ◽  
Vlbi Observations ◽  
Rotating Structure ◽  
Source Structure ◽  
Expected Position

AbstractWe report the results of three VLBI observations of the pre-main-sequence star AB Doradus A at 8.4 GHz. With almost three years between consecutive observations, we found a complex structure at the expected position of this star for all epochs. Maps at epochs 2007 and 2010 show a double core-halo morphology while the 2013 map reveals three emission peaks with separations between 5 and 18 stellar radii. Furthermore, all maps show a clear variation of the source structure within the observing time. We consider a number of hypothesis in order to explain such observations, mainly: magnetic reconnection in loops on the polar cap, a more general loop scenario and a close companion to AB Dor A.

Digital representation of spatial variation of multivariate landscape data

2006 ◽  
Vol 7 (2) ◽  
pp. 181-188 ◽  
Author(s):  
A. Altobelli ◽  
E. Bressan ◽  
E. Feoli ◽  
P. Ganis ◽  
F. Martini
Keyword(s):  
Spatial Variation ◽  
Digital Representation
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