Conveners
Global properties of the Sun's magnetic field
- Axel Brandenburg (Nordita)
Description
Chair 1
Karel Schrijver
(Lockheed Martin Advanced Technology Center)
09/03/2015, 09:00
The large-scale magnetic field of the Sun is shaped by the
interplay of active-region emergence, random-walk dispersal
in supergranulation, and advective transport in the
meridional flow and differential rotation. In that process,
active region nests, the plage state, and flow-field
interactions are important to the formation and evolution of
active regions, and likely to the global...
Judit Muraközy
(Heliophysical Observatory of Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences)
09/03/2015, 09:40
There are different mechanisms affecting the formation of
sunspot groups e.g. buoyancy on the emerging flux ropes,
drag force, tension, etc. To check the roles of these
theoretical mechanisms one needs to study the evolutionary
phases of sunspots and sunspot groups on a large statistical
sample. Our study is based on the SOHO/MDI – Debrecen Data
(SDD). Its high-temporal resolution allows...
Senthamizh Pavai Valliappan
(Leibniz Institute for Astrophysics)
09/03/2015, 10:00
The long term properties of sunspots aid us in better
understanding of the relation between solar dynamo and
surface magnetic fields, polar fields and open flux. The
continuous observation of sunspots are not available before
1825 but sunspot numbers are available back to 1610.
Reconstruction methods are available to derive the sunspot
butterfly diagram from sunspot numbers. Studying...
Fabio Del Sordo
(NoRDITA/Yale University)
09/03/2015, 10:20
The radial velocity method is a powerful way to search for
exoplanetary systems and it led to many discoveries of
exoplanets in the last 20 years. Nowadays, understanding
stellar activity and noise is a key factor for achieving a
substantial improvement in such technique. Radial-velocity
data are time-series containing the effect of both planets
and stellar disturbances: the detection of...
