High-Resolution Observations of Small-Scale Emerging Flux in the Photosphere

Details High-Resolution Observations of Small-Scale Emerging Flux in the Photosphere High-Resolution Observations of Small-Scale Emerging Flux in the Photosphere

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002apj...569..474d&link_type=abstract

The Astrophysical Journal, Volume 569, Issue 1, pp. 474-486.

Astronomy and Astrophysics

Astronomy

37

Magnetic Fields, Magnetohydrodynamics: Mhd, Sun: Photosphere

Scientific paper

High-resolution observations of a quiet-Sun region made on 1998 May 23 with the Swedish Vacuum Solar Telescope (SVST) are presented. I study the dynamics of magnetic elements on scales <=1" using Fe I λ6302 magnetograms and cotemporal G-band λ4305, Ca II K line λ3933, and Hα λ6563 filtergrams. This 3 hr long data set, obtained under excellent seeing conditions, reveals several cases in which flux concentrations that have recently emerged in the internetwork are rapidly (within 10-15 minutes) dispersed after emergence. The magnetic flux, initially quite concentrated (~0.5"), seems to get spread out (to several arcseconds) and/or shredded as a result of granular action, until it falls below the noise level in the magnetograms and becomes undetectable. These magnetic flux concentrations are much smaller than ephemeral regions, in both spatial extent and magnetic flux (of order 5×1017 Mx). They do not seem to get cancelled by opposite polarity and typically are not associated with G-band bright points or Ca II K line brightenings. These events may be related to the horizontal internetwork fields (HIFs) described by Lites and colleagues.

Affiliated with

Also associated with

No associations

Rating

High-Resolution Observations of Small-Scale Emerging Flux in the Photosphere 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 High-Resolution Observations of Small-Scale Emerging Flux in the Photosphere, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-Resolution Observations of Small-Scale Emerging Flux in the Photosphere will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1534220