The Heliospheric Magnetic Field over the Hale Cycle (2008)
Schwadron, N. A., Owens, M., Crooker, N. U.
The concept that open magnetic flux of the Sun (rooted with one and only one footpoint at the Sun) is a conserved quantity is taking root in the heliospheric community. Observations show that the...
The Heliospheric Magnetic Field over the Hale Cycle (2008)
Schwadron, N. A., Owens, M., Crooker, N. U.
The concept that open magnetic flux of the Sun (rooted with one and only one footpoint at the Sun) is a conserved quantity is taking root in the heliospheric community. Observations show that the...
The Heliospheric Magnetic Field over the Hale Cycle (2008)
N. A. Schwadron, M. Owens, N. U. Crooker
The concept that open magnetic flux of the Sun (rooted with one and only one footpoint at the Sun) is a conserved quantity is taking root in the heliospheric community. Observations show that the...
M. E. Burton, E. J. Smith, N. U. Crooker, G. L. Siscoe
The orientation of the current sheet predicted from a source surface model is compared with the orientation determined from minimum variance analysis of magnetic field data at 1 AU near solar...
ICMEs in the inner heliosphere: origin, evolution and propagation effects (2006)
Forsyth, R. J., Bothmer, V., Cid, C., Crooker, N. U., Horbury, T. S., Kecskemety, K., ...
Understanding interplanetary coronal mass ejection signatures (2006)
Wimmer-Schweingruber, R. F., Crooker, N. U., Balogh, A., Bothmer, V., Forsyth, R. J., Gazis, P., ...
A Test of Source-Surfae Model Predictions of Heliospheric Current Sheet Inclination (2004)
Burton, M. E., Smith, E. J., Crooker, N. U., Siscoe, G. L.
The orientation of the heliospheric current sheet predicted from a source surfae model is compared with the orientation determined from minimum variance analysis of ISEE-3 magnetic field data at 1 AU...
TheHeliospheric Current Sheet: Ulysses Observations (2004)
Burton, M. E., Smith, E. J., Goldstein, B. E., Neugebauer, M., Balogh, A., Phillips, J. L., ...
Probing the Magnetic Polarity Structure of the Heliospheric Current Sheet (2004)
Kahler, S. W., Crooker, N. U., Larson, D. E.
We use solar wind heat-flux electrons to determine the solar magnetic polarities of the inter-Planetary magnetic field (IMF) close to the heliospheric current sheet (HCS) around the time of the last...
High-Latitude Convection on Open and Closed Field Lines for Large IMF B sub y. (2002)
Moses,J. J., Crooker,N. U., Gorney,D. J., Siscoe,G. L.
Certain S3-3 electric field observations show a single convetion cell engulfing the northern polar cap. The flow direction is that for a positive IMF By component. The particle data indicate that...
Crooker, N.U., Balogh, A., Bothmer, V., Forsyth, R.J., Gloeckler, George, Hewish, A., ...
Corotating Interaction Regions (CIRs) form as a consequence of the compression of the solar wind at the interface between fast speed streams and slow streams. Dynamic interaction of solar wind...
Crooker, N. U., Cliver, E. W., Tsurutani, B. T.
The occurrence rate of great geomagnetic storms displays a pronounced semiannual variation. Of the forty-two great storms during the period 1940-1990, none occurred during the solstitial months of...
Parameterizing the Wind 3DP Heat Flux Electron Data (1998)
Kahler, S. W., Crooker, N. U., Larson, D. E.
Solar wind heat flux (HF) electrons are valuable as tracers of the interplanetary magnetic field (IMF) topology, distinguishing positive from negative solar polarities and indicating the presence of...
Suprathermal Electron Isotropy in High-Beta Solar Wind and Its Role in Heat Flux Dropouts (1998)
Crooker, N. U., Larson, D. E., Kahler, S. W., Lamassa, S. M., Spence, H. E.
Time variations in plasma beta and a parameter which measures isotropy in suprathermal electron pitch angle distributions show a remarkably close correspondence throughout the solar wind. The finding...
Multiple Heliospheric Current Sheets and Coronal Streamer Belt Dynamics. (1994)
Crooker, N. U., Siscoe, G. L., Shodhan, S., Webb, D. F., Gosling, J. T.
The occurrence of multiple directional discontinuities in the coronal streamer belt at sector boundary crossings in the heliosphere often ascribes to waves or kinks in the heliospheric current sheet,...
A Seasonal Dependence for the Geoeffectiveness of Eruptive Solar Events. (1994)
The pronounced seasonal variation of the occurrence rate of great geomagnetic storms, attributed to in-ecliptic draping of interplanetary magnetic fields and the Russell-McPherron effect, suggests...
Gonzalez et al. argue that the postshock Russell-McPherron effect proposed by Crooker et al. (1992) cannot account for the nearly 100% modulation in the semiannual variation of great-storm occurrence...