Tracing the connectivity of magnetic flux ropes to solar surface with ≥ 100 keV electrons associated with CME on July 14, 2000

Details Tracing the connectivity of magnetic flux ropes to solar surface with ≥ 100 keV electrons associated with CME on July 14, 2000 Tracing the connectivity of magnetic flux ropes to solar surface with ≥ 100 keV electrons associated with CME on July 14, 2000

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001icrc....8.3429i&link_type=abstract

Proceedings of the 27th International Cosmic Ray Conference. 07-15 August, 2001. Hamburg, Germany. Under the auspices of the Int

Physics

Scientific paper

It is known that about 1/3 of all coronal mass ejections (CMEs) at 1 AU exhibit the large and coherent internal field rotations characteristic to magnetic flux ropes (magnetic clouds). But there are still unsolved questions; do CMEs eventually disconnect completely from the Sun?; how long does it take for such complete disconnection to occur? We contribute to solve these questions from the analysis of CMEs observed by the Nozomi spacecraft. On July 12, 2000, a magnetic flux rope was ejected from solar surface associated with a CME and an X1.9 class flare which occurred in solar active region AR 9077. Two days after, on July 14, another large solar flare of X5.7 class (named the Bastille event) occurred in the same region AR 9077 where the former flare had occurred. On the same day, Electron and Ion Spectrometer (EIS) onboard the Nozomi spacecraft observed unidirectional field-aligned ≥100 keV electrons whose flux level is more than 10 particles/[keV sec cm2 sr] at the peak and the Magnetic Field Measurement (MGF) instrument on the same spacecraft observed a magnetic flux rope, when the spacecraft was about 1 AU distant from the Sun but 1.8 AU far from the Earth. From its high level of flux it is considered that the second flare accelerated these electrons near the solar surface. From a pitch-angle distribution of the electrons and the position of the active region where these flares occurred, it seems that the electrons propagated along the magnetic flux rope that was ejected on July 12, and reached the Nozomi spacecraft. These considerations suggest that at least one of the footpoints of the magnetic flux rope had been connected to solar surface for two days at least.

Affiliated with

Also associated with

No associations

Rating

Tracing the connectivity of magnetic flux ropes to solar surface with ≥ 100 keV electrons associated with CME on July 14, 2000 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 Tracing the connectivity of magnetic flux ropes to solar surface with ≥ 100 keV electrons associated with CME on July 14, 2000, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tracing the connectivity of magnetic flux ropes to solar surface with ≥ 100 keV electrons associated with CME on July 14, 2000 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-798934