Results 101 to 110 of about 429,319 (205)

The Ubiquity of Twisted Flux Ropes in the Quiet Sun

The Astrophysical Journal Letters
Models and observations have demonstrated that twisted flux ropes (TFRs) play a significant role in the structure and eruptive dynamics of active regions.
Tahar Amari, Aurélien Canou, Marco Velli, Zoran Mikic, Frederic Alauzet, Eric Buchlin, Jean-François Luciani, Jean-Jacques Aly, Lucas A. Tarr   +8 more
doaj   +1 more source

Quiet Sun Magnetic Fields [PDF]

, 2022
openaire   +1 more source

Hinode/EIS Observation of the Alfvénic Fluctuations in the Quiet Sun

The Astrophysical Journal
Alfvénic fluctuations in the corona are regularly observed in EUV imaging and infrared spectroscopic data. We report here on the Doppler velocity fluctuations within the data from the Extreme-Ultraviolet Imaging Spectrometer (EIS) on board Hinode.
Edris Tajfirouze, Richard Morton, Peter R. Young   +2 more
doaj   +1 more source

Multi-scale energy release events in the quiet Sun: a possible source for coronal heating

Frontiers in Astronomy and Space Sciences
The coronal heating problem remains one of the most challenging questions in solar physics. The energy driving coronal heating is widely understood to be associated with convective motions below the photosphere. Recent high-resolution observations reveal
Rui Wang, Rui Wang, Yiming Jiao, Yiming Jiao, Xiaowei Zhao, Chong Huang   +5 more
doaj   +1 more source

Buildup, Explosion, and Untwisting of a Solar Active Region Jet Observed with Solar Orbiter, IRIS, and SDO

The Astrophysical Journal
We present detailed analysis of an active region coronal jet accompanying a minifilament eruption that is fully captured and well resolved in high spatial resolution 174 Å coronal images from Solar Orbiter’s Extreme Ultraviolet Imager (EUI).
Navdeep K. Panesar, Alphonse C. Sterling, Ronald L. Moore, Sanjiv K. Tiwari, David Berghmans, Andrei Zhukov, Marilena Mierla, Cis Verbeeck, Koen Stegen   +8 more
doaj   +1 more source

All Quiet on the Quiet Sun [PDF]

Nature, 1968
openaire   +1 more source

A High-resolution, Inversion-based Synoptic Study of Solar Granulation

The Astrophysical Journal
The convectively driven, weakly magnetized regions of the solar photosphere dominate the Sun’s surface at any given time, but the temporal variations of these quiet regions of the photosphere throughout the solar cycle are still not well known.
James W. Crowley, Ivan Milić, Gianna Cauzzi, Kevin Reardon   +3 more
doaj   +1 more source

Schematic structure of the quiet sun [PDF]

Il Nuovo Cimento, 1960
openaire   +1 more source

IUE spectra of F and late A stars [PDF]

The International Ultraviolet Explorer (IUE) spectra of alpha CMi (F5 IV-V), beta Cas (F2 IV), alpha Car (F0 Ib), and gamma Boo (A7 III) in the context of the question as to whether chromospheres disappear in the early F late A portions of the ...
Linsky, J. L., Marstad, N. C.
core   +1 more source

A Survey of Current Operations-Ready Thermospheric Density Models for Drag Modeling in LEO Operations. [PDF]

J Astronaut Sci
Mutschler S, Pilinski M, Bruinsma S, Sutton E, Tobiska WK, Knipp D, Fang TW, Casali S, Mallik V, DiLorenzo B, Siemes C.   +10 more
europepmc   +1 more source