Multipoint Analysis by STEREO and WIND of the Magnetic Cloud on May 21-23, 2007

Details Multipoint Analysis by STEREO and WIND of the Magnetic Cloud on May 21-23, 2007 Multipoint Analysis by STEREO and WIND of the Magnetic Cloud on May 21-23, 2007

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsh42a..03h&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #SH42A-03

Physics

2101 Coronal Mass Ejections (7513), 2111 Ejecta, Driver Gases, And Magnetic Clouds, 2134 Interplanetary Magnetic Fields, 7513 Coronal Mass Ejections (2101)

Scientific paper

We will present multi-spacecraft observations by STEREO A and B and WIND of a magnetic cloud in the interplanetary space on May 21-23, 2007. At that time the angular separation between STEREO A and B was nearly 10 degrees. The differences in the observed magnetic field signatures at the locations of the spacecrafts suggest that they crossed the different parts of the magnetic cloud. STEREO B observed a very clear rotation of the magnetic field direction and presumably crossed the cloud close to the center whereas STEREO A likely traversed the leg of the magnetic cloud. Although the magnetic field maximum within this cloud was ~17 nT it did not produce significant geomagnetic response since the Z-component of the magnetic field was orientated northward. We will analyze the structure of the magnetic cloud at each spacecraft in order to deduce its larger-scale structure and orientation. In addition, we will study the solar source region of the magnetic cloud as well as the coronagraph and radio wave observations.

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