Results 91 to 100 of about 1,202,560 (191)

Space Weather Disrupts Low‐Latitude Network RTK: Evidence From LSTIDs During June 2025 Geomagnetic Storm

Space Weather, Volume 24, Issue 6, June 2026.
Abstract The geomagnetic storm on 1 June 2025 generated pronounced large‐scale traveling ionospheric disturbances (LSTIDs) over China, captured by dense GNSS networks. It has been unclear whether network real‐time kinematic (NRTK) positioning, which relies on spatial interpolation from multiple reference stations, remains effective under such extreme ...
Tong Liu, Jianghe Chen, Wenfeng Nie, Zhibin Yu, Rui Song, Wu Chen, Pan Xiong, Tianhe Xu, Bo Chen   +8 more
wiley   +1 more source

The possible role of vortex shedding in the excitation of kink-mode oscillations in the solar corona [PDF]

, 2009
We propose a model for the excitation of horizontally polarised transverse (kink) magnetoacoustic oscillations of solar coronal loops by upflows associated with coronal mass ejections.
V. M. Nakariakov, Aschwanden, Markus J., T. Van Doorsselaere, Van Doorsselaere, Tom, M. J. Aschwanden, Nakariakov, V. M. (Valery M.)   +5 more
core   +1 more source

MHD simulations of coronal heating [PDF]

, 2015
The problem of heating the solar corona requires the conversion of magnetic energy into thermal energy. Presently, there are two promising mechanisms for heating the solar corona: wave heating and nanoflare heating.
Tam, Kuan V.
core   +2 more sources

Nitric Oxide Radiative Relaxation Time: Damping Timescales of Lower Thermospheric Thermal Perturbations

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Nitric oxide (NO) radiative cooling governs much of the energy budget in the Earth's lower thermosphere and damps out temperature perturbations. The radiative relaxation time (RRT), the timescale that defines how efficiently infrared radiation damps out the perturbations to the thermal structure to 1/e of the perturbation's initial value, is ...
Ningchao Wang, Martin G. Mlynczak, John T. Emmert, Manuel López‐Puertas, Bernd Funke   +4 more
wiley   +1 more source

Ubiquitous Small-scale Extreme-ultraviolet Upflow-like Events above Network Regions Observed by the Solar Orbiter/Extreme Ultraviolet Imager

The Astrophysical Journal
Universal small-scale solar activity in the quiet region is suggested to be a potential source of solar wind and the upper solar atmosphere. Here, with the high-resolution 174 Å imaging observations from the Solar Orbiter/Extreme Ultraviolet Imager, we ...
Yadan Duan, Hechao Chen, Zhenyong Hou, Zheng Sun, Yuandeng Shen   +4 more
doaj   +1 more source

PRELIMINARY RESULTS OF INTERFEROMETRIC OBSERVATIONS OF THE QUIET SUN AT THE FREQUENCIES 8 – 32 MHZ

Odessa Astronomical Publications, 2018
We studied a radio emission of the quiet Sun at decameter wavelengths to determine its angular dimensions. Observations were conducted using interferometers composed of antenna sections of the UTR-2 radio telescope.
V. A. Shepelev, V. N. Melnik, R. V. Vashchishin   +2 more
doaj   +1 more source

Characterizing Patterns of Resurfacing on Venus With Volcanoes and Coronae

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract One of the major research questions for Venus is the manner in which it resurfaces itself, with a near‐random distribution of a relatively few craters providing the only age constraints for the planet's surface. We use volcanoes and their temporal and spatial relationships to coronae to characterize patterns of coronal resurfacing for ...
Nicholas J. Montiel, Barbara De Toffoli
wiley   +1 more source

Thread Displacement and Intensity Oscillations in a Quiescent Prominence

The Astrophysical Journal
In this paper, we investigate the thread displacement and intensity oscillations in a quiescent prominence observed by New Vacuum Solar Telescope at the H α line center on 2019 October 31.
Yuxiang Song, Zongjun Ning, Dong Li, Fanpeng Shi, Jun Xu, Yuzhi Yang   +5 more
doaj   +1 more source

The Sun's global photospheric and coronal magnetic fields : observations and models [PDF]

, 2012
2012LRSP....9....6M Funding: STFC, the Leverhulme Trust and European Commission’s Seventh Framework Programme (FP7/2007-2013) under the grant agreement SWIFF (project no.
Anthony Yeates, Yeates, A.R., Duncan Mackay, Mackay, D.H., Yeates, Anthony Robinson, Mackay, Duncan Hendry   +5 more
core   +1 more source

Structuring of the quiet solar corona

Die Aufheizung der Sonnenkorona, der dünnen äußeren Atmosphäre der Sonne, ist seit Jahrzehnten eine der wichtigsten offenen Fragen der Sonnenphysik. Wie das koronale Plasma oberhalb der viel kühleren Photosphäre Millionen von Grad erreicht, hängt eng mit dem Magnetfeld der Sonne zusammen. Das Feld durchdringt die Sonnenatmosphäre und prägt verschiedene
openaire   +1 more source