Observations of an interplanetary slow shock associated with magnetic cloud boundary layer

Details Observations of an interplanetary slow shock associated with magnetic cloud boundary layer Observations of an interplanetary slow shock associated with magnetic cloud boundary layer

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3315107z&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 15, CiteID L15107

Physics

7

Interplanetary Physics: Discontinuities (7811), Interplanetary Physics: Ejecta, Driver Gases, And Magnetic Clouds, Interplanetary Physics: Interplanetary Shocks, Interplanetary Physics: Solar Wind Plasma

Scientific paper

The observations of the slow shocks associated with the interplanetary coronal mass ejections near 1 AU have seldom been reported in the past several decades. In this paper we report the identification of an interplanetary slow shock observed by Wind on September 18, 1997. This slow shock is found to be just the front boundary of a magnetic cloud boundary layer. A self-consistent method based on the entire R-H relations is introduced to determine the shock normal. It is found that the observations of the jump conditions across the shock are in good agreement with the R-H solutions. The intermediate Mach number MI = Un/(VAcos$\theta$Bn) is less than 1 on both sides of the shock. In the upstream region, the slow Mach number Ms1 = Un1/Vs1 is 1.44 (above unity), and in the downstream region, the slow Mach number Ms2 = Un2/Vs2 is 0.8 (below unity). Here Vs and VA represent the slow magnetoacoustic speed and Alfvén speed respectively. In addition, the typical interior magnetic structure inside the shock layer is also analyzed using the 3s time resolution magnetic field data since the time for the spacecraft traversing the shock layer is much longer (about 17s). As a potential explanation to the formation of this kind of slow shock associated with magnetic clouds, this slow shock could be a signature of reconnection that probably occurs inside the magnetic cloud boundary layer.

Affiliated with

Also associated with

No associations

Rating

Observations of an interplanetary slow shock associated with magnetic cloud boundary layer does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Observations of an interplanetary slow shock associated with magnetic cloud boundary layer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observations of an interplanetary slow shock associated with magnetic cloud boundary layer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1780378