Coronal Fe XIV Emission During the Whole Heliosphere Interval Campaign (Postprint)

2012 ◽  
Author(s):  
Richard C. Altrock
Keyword(s):  
Whole Heliosphere Interval

scholarly journals Whole Heliosphere Interval: Overview of JD16

2009 ◽  
Vol 5 (H15) ◽  
pp. 471-479 ◽  
Author(s):  
David F. Webb ◽  
Sarah E. Gibson ◽  
Barbara J. Thompson
Keyword(s):  
Solar Minimum ◽  
Planetary System ◽  
Three Dimensional ◽  
50Th Anniversary ◽  
Carrington Rotation ◽  
Modeling Effort ◽  
International Geophysical Year ◽  
Simulations And Modeling ◽  
International Geophysical ◽  
Whole Heliosphere Interval

AbstractThe Whole Heliosphere Interval is an international observing and modeling effort to characterize the three-dimensional interconnected solar-heliospheric-planetary system, i.e., the “heliophysical” system. WHI was part of the International Heliophysical Year, on the 50th anniversary of the International Geophysical Year, and benefited from hundreds of observatories and instruments participating in IHY activities. WHI describes the 3-D heliosphere originating from solar Carrington Rotation 2068, March 20–April 16, 2008. The focus of IAU JD16 was on analyses of observations obtained during WHI, and simulations and modeling involving those data and that period. Consideration of the WHI interval in the context of surrounding solar rotations and/or compared to last solar minimum was also encouraged. Our goal was to identify connections and commonalities between the various regions of the heliosphere.

scholarly journals On Cosmic Rays, IP Structures and Geospace Consequences During WHI

2009 ◽  
Vol 5 (H15) ◽  
pp. 488-490
Author(s):  
A. Dal Lago ◽  
F. L. Guarnieri ◽  
M. R. da Silva ◽  
W. D. Gonzalez ◽  
C. R. Braga ◽  
...  
Keyword(s):  
High Speed ◽  
Interplanetary Space ◽  
Cosmic Ray ◽  
Corotating Interaction Regions ◽  
Near Earth Space ◽  
Long Duration ◽  
Minimum Solar Activity ◽  
Interaction Regions ◽  
Muon Detection ◽  
Whole Heliosphere Interval

AbstractThis work presents some observations during the period of the Whole Heliosphere Interval (WHI) of the effects of interplanetary (IP) structures on the near-Earth space using three sets of observations: magnetic field and plasma from the Advanced Composition Explorer (ACE) satellite, ground-based cosmic ray data from the Global Muon Detection Network (GMDN) and geomagnetic indices (Disturbance storm-time, Dst, and auroral electrojet index, AE). Since WHI was near minimum solar activity, high speed streams and corotating interaction regions (CIRs) were the dominant structures observed in the interplanetary space surrounding Earth. Very pronounced geomagnetic effects are shown to be correlated to CIRs, especially because they can cause the so-called High-Intensity Long-Duration Continuous AE Activity (HILDCAAs) - Tsurutani and Gonzalez (1987). At least a few high speed streams can be identified during the period of WHI. The focus here is to characterize these IP structures and their geospace consequences.

scholarly journals Coronal Mass Ejection deflection in the corona during the two last solar minima

2011 ◽  
Vol 7 (S286) ◽  
pp. 225-228
Author(s):  
Fernando Marcelo López ◽  
Hebe Cremades ◽  
Laura Balmaceda
Keyword(s):  
Magnetic Field ◽  
Working Group ◽  
Complex Structure ◽  
Angular Separation ◽  
Heliospheric Current Sheet ◽  
The Other ◽  
Statistical Comparison ◽  
Source Regions ◽  
Mass Ejection ◽  
Whole Heliosphere Interval

AbstractIn the framework of the IAU Working Group on Comparative Solar Minima, we investigate the latitudinal deflection of Coronal Mass Ejections (CMEs) with respect to the location of their uniquely identified solar source regions. Data compiled during the Whole Sun Month (WSM) and Whole Heliosphere Interval (WHI) campaigns allowed for comparisons between the two last solar minima.The analysis of the coronal streamers’ distribution during these intervals led to study of the dependence of CME deflection on the angular separation between their source regions and the nearest streamer. All performed analyses consider exclusively projected structures on the plane of the sky, disregarding longitudinal deflections as well.The results of the present study indicate that for both minima most of the events (62.5% for WSM, 84.2% for WHI) are deflected towards the nearest streamer, following the boundary conditions imposed by the heliospheric current sheet.Most of the deflections found in the WHI period could be explained by the more complex structure in the global distribution of magnetic field present during that minimum. On the other hand, the low number of events detected during the WSM period hinders the statistical comparison between both campaigns.

scholarly journals Ionospheric Day-to-Day Variability Around the Whole Heliosphere Interval in 2008

Solar Physics ◽  
2011 ◽  
Vol 274 (1-2) ◽  
pp. 457-472 ◽  
Author(s):  
Wenbin Wang ◽  
Jiuhou Lei ◽  
Alan G. Burns ◽  
Liying Qian ◽  
Stanley C. Solomon ◽  
...  
Keyword(s):  
Whole Heliosphere Interval

scholarly journals The Whole Heliosphere Interval in the Context of a Long and Structured Solar Minimum: An Overview from Sun to Earth

Solar Physics ◽  
2011 ◽  
Vol 274 (1-2) ◽  
pp. 5-27 ◽  
Author(s):  
S. E. Gibson ◽  
G. de Toma ◽  
B. Emery ◽  
P. Riley ◽  
L. Zhao ◽  
...  
Keyword(s):  
Solar Minimum ◽  
Whole Heliosphere Interval
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