Ultraviolet Spectroscopy of Coronal Jets Within the Fast Solar Wind

Details Ultraviolet Spectroscopy of Coronal Jets Within the Fast Solar Wind Ultraviolet Spectroscopy of Coronal Jets Within the Fast Solar Wind

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sh41b09d&link_type=abstract

American Geophysical Union, Spring Meeting 2001, abstract #SH41B-09

Astronomy and Astrophysics

Astrophysics

7807 Charged Particle Motion And Acceleration

Scientific paper

The coronal jets are spectacular dynamic events originating from different structures in the solar corona. We present UVCS/SOHO observations of polar coronal jets. They appear to originate near flaring ultraviolet bright points within polar coronal holes that are source regions of the fast solar wind. UVCS recorded the jets as a significant enhancement in the integrated intensities of the strongest coronal emission lines: mostly H~I Lyα and O~VI λ λ 1032,1037. A number of detected jets are correlated with the EIT Fe~XII 195~Å and LASCO C2 white-light events. Typically, the observed H~I Lyα enhancement was up to a factor of 1.3-1.7 over the ambient corona and lasted for 20-30 minutes. The narrow profiles of the emission lines indicate that the material in the jets is cooler than the underlying corona. We modeled the observable properties of the jets to get estimates on jet plasma conditions. We discuss the model results, the initial electron temperature and the heating rate required to reproduce the observed O~VI ionization state. We also discuss connection of the polar jets to the fast solar wind. This work is supported by the National Aeronautics and Space Administration under grant NAG5--7822 to the Smithsonian Astrophysical Observatory, by Agenzia Spaziale Italiana, and by the ESA PRODEX program (Swiss contribution).

Affiliated with

Also associated with

No associations

Rating

Ultraviolet Spectroscopy of Coronal Jets Within the Fast Solar Wind 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 Ultraviolet Spectroscopy of Coronal Jets Within the Fast Solar Wind, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultraviolet Spectroscopy of Coronal Jets Within the Fast Solar Wind will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1275074