Bibcode
Borrero, J. M.; Martínez-Pillet, V.; Schlichenmaier, R.; Solanki, S. K.; Bonet, J. A.; del Toro Iniesta, J. C.; Schmidt, W.; Barthol, P.; Gandorfer, A.; Domingo, V.; Knölker, M.
Bibliographical reference
The Astrophysical Journal Letters, Volume 723, Issue 2, pp. L144-L148 (2010).
Advertised on:
11
2010
Citations
48
Refereed citations
37
Description
Using the IMaX instrument on board the SUNRISE stratospheric balloon
telescope, we have detected extremely shifted polarization signals
around the Fe I 5250.217 Å spectral line within granules in the
solar photosphere. We interpret the velocities associated with these
events as corresponding to supersonic and magnetic upflows. In addition,
they are also related to the appearance of opposite polarities and
highly inclined magnetic fields. This suggests that they are produced by
the reconnection of emerging magnetic loops through granular upflows.
The events occupy an average area of 0.046 arcsec2 and last
for about 80 s, with larger events having longer lifetimes. These
supersonic events occur at a rate of 1.3 × 10-5
occurrences per second per arcsec2.
Related projects
Solar and Stellar Magnetism
Magnetic fields are at the base of star formation and stellar structure and evolution. When stars are born, magnetic fields brake the rotation during the collapse of the mollecular cloud. In the end of the life of a star, magnetic fields can play a key role in the form of the strong winds that lead to the last stages of stellar evolution. During
Tobías
Felipe García