Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-04-04
Astronomy and Astrophysics
Astrophysics
7 pages, submitted to A&A, referee's comments included
Scientific paper
10.1051/0004-6361:20077595
We investigate the plasma flow properties inside a Supergranular (SG) cell, in particular its interaction with small scale magnetic field structures. The SG cell has been identified using the magnetic network (CaII wing brightness) as proxy, applying the Two-Level Structure Tracking (TST) to high spatial, spectral and temporal resolution observations obtained by IBIS. The full 3D velocity vector field for the SG has been reconstructed at two different photospheric heights. In order to strengthen our findings, we also computed the mean radial flow of the SG by means of cork tracing. We also studied the behaviour of the horizontal and Line of Sight plasma flow cospatial with cluster of bright CaII structures of magnetic origin to better understand the interaction between photospheric convection and small scale magnetic features. The SG cell we investigated seems to be organized with an almost radial flow from its centre to the border. The large scale divergence structure is probably created by a compact region of constant up-flow close to the cell centre. On the edge of the SG, isolated regions of strong convergent flow are nearby or cospatial with extended clusters of bright CaII wing features forming the knots of the magnetic network.
Berrilli Francesco
Del Moro Dario
Giordano Silvia
No associations
LandOfFree
3D photospheric velocity field of a Supergranular cell 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 3D photospheric velocity field of a Supergranular cell, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 3D photospheric velocity field of a Supergranular cell will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-213739