93 citations · 380 across the 13 of their papers we have counts for
6 papers · 1 filter
Dynamics of the Solar Magnetic Network. II. Heating the Magnetized Chromosphere
S. S. Hasan, A. A. van Ballegooijen
We consider recent observations of the chromospheric network, and argue that the bright network grains observed in the Ca II H & K lines are heated by an as yet unidentified quasi-…
Probing the internal magnetic field of slowly pulsating B-stars through g modes
S. S. Hasan, J. -P. Zahn, J. Christensen-Dalsgaard
We suggest that high-order g modes can be used as a probe of the internal magnetic field of SPB (slowly pulsating B) stars. The idea is based on earlier work by the authors which a…
Dynamics of the Solar Magnetic Network: Two-dimensional MHD Simulations
S. S. Hasan, A. A. van Ballegoiijen, W. Kalkofen +1
The aim of this work is to identify the physical processes that occur in the network and contribute to its dynamics and heating. We model the network as consisting of individual fl…
Dynamics and Heating of the Magnetic Network on the Sun: Efficiency of mode transformation
S. S. Hasan, P. Ulmschneider
We aim to identify the physical processes which occur in the magnetic network of the chromosphere and which contribute to its dynamics and heating. Specifically, we study the propa…
Convective intensification of magnetic flux tubes in stellar photospheres
S. P. Rajaguru, R. L. Kurucz, S. S. Hasan
The convective collapse of thin magnetic flux tubes in the photospheres of sun-like stars is investigated using realistic models of the superadiabatic upper convection zone layers…
Excitation of Oscillations in the Magnetic Network on the Sun
S. S. Hasan, W. Kalkofen, A. A. van Ballegooijen
We examine the excitation of oscillations in the magnetic network of the Sun through the footpoint motion of photospheric magnetic flux tubes located in intergranular lanes. The mo…