Results 111 to 120 of about 28,168 (221)
A model of interplanetary and coronal magnetic fields [PDF]
Model of interplanetary and solar magnetic field structure above photosphere using Green function solution to Maxwell ...
Ness, N. F. +2 more
core +1 more source
A high altitude measurement to determine the ratio of deuterium to hydrogen in the solar atmosphere Quarterly status report, 1 Dec. 1965 - 28 Feb. 1966 [PDF]
Optical systems for high altitude measurements to determine deuterium-hydrogen ratio in solar photosphere by recording profiles of Fraunhofer ...
Henderson, G.
core +1 more source
Meridional Flow in the Solar Polar Caps Revealed by Magnetic Field Observation and Simulation
The Astrophysical JournalAs a large-scale motion on the Sun, the meridional flow plays an important role in determining magnetic structure and strength and solar cycle. However, the meridional flow near the solar poles is still unclear.
Shuhong Yang +12 more
doaj +1 more source
Coaligned observations of solar magnetic fields at different heights: MSFC Center director's discretionary fund final report (Project No. 88-10) [PDF]
The objective was to develop the capability for and coaligned observations of the structure and evolution of the Sun's magnetic field at two different heights in the solar atmosphere: the photosphere, which is the lowest region observable with optical ...
Gary, G. A. +3 more
core +1 more source
Magnetoacoustic Shocks and Spectropolarimetric Signals in He I 10830 Å
The Astrophysical JournalUmbral flashes are manifestations of magnetoacoustic shocks in the solar chromosphere. These phenomena are thought to influence the evolution of chromospheric umbral magnetic fields.
Hirdesh Kumar +4 more
doaj +1 more source
Variations in Dominant Wave Period in the Solar Atmosphere
The Astrophysical JournalWaves are an integral part of the solar atmosphere, and their characteristics (e.g., dominant period, range of periods, power, and phase angle) change on a diverse spatiotemporal scale.
Pradeep Kayshap +3 more
doaj +1 more source
Magnetic Fields in the Solar Convection Zone
Living Reviews in Solar Physics, 2009 Active regions on the solar surface are generally thought to originate from a strong toroidal magnetic field generated by a deep seated solar dynamo mechanism operating at the base of the solar convection zone.
Yuhong Fan
doaj
Magnetic Flux Emergence and Solar Eruptions in Partially Ionized Plasmas
The Astrophysical JournalWe have performed 3D MHD simulations to study the effect of partial ionization in the process of magnetic flux emergence in the Sun. In fact, we continue previous work, and we now focus (1) on the emergence of the magnetic fields above the solar ...
Georgios Chouliaras, V. Archontis
doaj +1 more source
The Astrophysical Journal LettersMagnetic flux ropes are fundamental magnetic structures in solar eruptions, whose formation is generally attributed to: (1) the emergence of subsurface flux tubes; or (2) flux cancellation driven by photospheric horizontal flows and magnetic reconnection.
Can Wang +5 more
doaj +1 more source
The Astrophysical JournalChromospheric differential rotation is a key component in comprehending the atmospheric coupling between the chromosphere and the photosphere at different phases of the solar cycle. In this study, we therefore utilize the newly calibrated multidecadal Ca
Dibya Kirti Mishra +7 more
doaj +1 more source