487 citations
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46 papers · 1 filter
Quenching of the alpha effect in the Sun -- what observations are telling us
R. H. Cameron
The Babcock-Leighton type of dynamo has received recent support in terms of the discovery in the observational records of systematic cycle-to-cycle variations in the tilt angle of…
Continuous upflows and sporadic downflows observed in active regions
S. Kamio, H. Peter, W. Curdt +1
We present a study of the temporal evolution of coronal loops in active regions and its implications for the dynamics in coronal loops. We analyzed images of the Atmospheric Imagin…
Probing the Role of Magnetic-Field Variations in NOAA AR 8038 in Producing Solar Flare and CME on 12 May 1997
Rajmal Jain, Arun K. Awasthi, Babita Chandel +3
We carried out a multi-wavelength study of a CME and a medium-size 1B/C1.3 flare occurring on 12 May 1997. We present the investigation of magnetic-field variations in the NOAA Act…
Accurate p-mode measurements of the G0V metal-rich CoRoT target HD 52265
J. Ballot, L. Gizon, R. Samadi +27
The star HD 52265 is a G0V metal-rich exoplanet-host star observed in the seismology field of the CoRoT space telescope from November 2008 to March 2009. The satellite collected 11…
Low polarized emission from the core of coronal mass ejections
M. Mierla, I. Chifu, B. Inhester +2
In white-light coronagraph images, cool prominence material is sometimes observed as bright patches in the core of coronal mass ejections (CMEs). If, as generally assumed, this emi…
Universality of the Small-Scale Dynamo Mechanism
R. Moll, J. Pietarila Graham, J. Pratt +3
We quantify possible differences between turbulent dynamo action in the Sun and the dynamo action studied in idealized simulations. For this purpose we compare Fourier-space shell-…