Transition region small-scale dynamics: UV explosive events

Details Transition region small-scale dynamics: UV explosive events Transition region small-scale dynamics: UV explosive events

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.506..777t&link_type=abstract

In: Solar variability: from core to outer frontiers. The 10th European Solar Physics Meeting, 9 - 14 September 2002, Prague, Cze

Physics

1

Solar Transition Region, Expolsive Events, Coronal Heating

Scientific paper

High spectral, spatial and temporal resolution UV observations of the quiet Sun transition region show a highly structured and dynamical environment where transient events such as brightenings, blinkers and explosive events occur continuously. In particular explosive events are characterized by strongly non-Gaussian line profiles witnessing velocities up to 200 km s-1. The high kinetic and enthalpy fluxes associated with these events could be important in the energy balance of the transition region and, perhaps, of the whole corona. In this paper we present a high spatial resolution (~1") spectroheliogram of a 270×290 arcsec2 wide area of the quiet Sun acquired with SUMER/SoHO in the O VI 1032 spectral line. The extremely high quality of these observations allows us to identify tens of explosive events and to study their relationship with the underlying photospheric magnetic field. Moreover, the behaviour of lines emitted by plasma at chromospheric (2×104K) and coronal (106K) temperatures during transition region explosive events is investigated. We conclude that those events do not contribute significantly to the energy balance of the corona and seems typical of structure not obviously connected to the T≥106K corona.

Affiliated with

Also associated with

No associations

Rating

Transition region small-scale dynamics: UV explosive events 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 Transition region small-scale dynamics: UV explosive events, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transition region small-scale dynamics: UV explosive events will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-964040