Results 101 to 110 of about 14,186 (205)

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

Solar Magnetic Activity and Its Terrestrial Impact through Correlations with Drought Indices

Physical Sciences and Technology
Solar activity manifests itself in the form of sunspots on the solar surface and solar flares, which can influence Earth's climatic conditions, including drought in mid-latitude regions.
Aiganym Sarsembayeva, Laura Ryssaliyeva, Farida Belissarova, Akmaral Sarsembay   +3 more
doaj   +1 more source

Coexistence of Decaying and Decayless Kink Oscillations in a Bundle of Coronal Loops Triggered by an X6.3 Solar Flare

The Astrophysical Journal Letters
We report the coexistence of decaying and decayless kink oscillations within a single bundle of coronal loops during the X6.3-class solar flare on 2024 February 22.
Yi Dai, Xiansheng Zheng, Xinping Zhou, Linqiao Jiang, Jie Zheng, Haiyin Qing, Zhining Qu   +6 more
doaj   +1 more source

An Investigation of the Loop Oscillations after a Solar Flare

We study the loop oscillations after a solar flare on 19 January 2023, in the active region N11E40 3196, which is well observed by the SDO/AIA. After tracing the loop position and fitting, we find that the loop oscillations have a period between 3 and 9 ...
Yuzhi Yang, Jun Xu, Dong Li, Zongjun Ning, Fanpeng Shi, Yuxiang Song   +5 more
core   +1 more source

Possible Evidence of Long-Term Oscillations in the Solar Atmosphere

, 2011
[[abstract]]We have obtained the temporal correlation function, Q(t), from time sequences of Cathinspii K filtergrams and Dopplergrams from Antarctica, Taiwan Oscillation Network (TON) and Solar and Heliospheric Observatory (SOHO).
K.P. Raju;Jagdev Singh;R. Srikanth;Dean-Yi Chou;Ton Team
core   +1 more source

The $n {-} \bar n$ oscillations in neutron fluxes running from Sun to Earth

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2011
The process of $n {-} \bar n$ oscillations in the solar cosmic-rays is considered. It is shown that it has high intensity with respect to the analogic processes on the Earth $(I_{c{-}r}/I_{Earth} \propto 10^8)$, because magnetic field strongly suppresses
Lev S Molchatsky
doaj  

Solar irradiance five minute oscillations

, 2011
We examined the possible nature and the origin of the solar irradiance five-minute oscillations. Using solar observations we solved the inverse radiative transfer problem and reproduced the height stratification of the local and global temperature ...
Ковальчук, М., Стоділка, М.   +1 more
core   +1 more source

Negative-energy Waves in the Vertical Threads of a Solar Prominence

The Astrophysical Journal Letters
Solar prominences, intricate structures on the Sun’s limb, have been a subject of fascination owing to their threadlike features and dynamic behaviors.
Jincheng Wang, Dong Li, Chuan Li, Yijun Hou, Zhike Xue, Zhe Xu, Liheng Yang, Qiaoling Li   +7 more
doaj   +1 more source

Magnetospheric and auroral activity during the April 18, 2002 sawtooth event. [PDF]

, 2006
We examine the 18 April 2002 sawtooth event. We find that the strong magnetic field dipolarizations observed in association with each tooth are not global in occurrence but are rather confined to the nightside.
Skoug, R., Thomsen, M .F., Reeves, G. D., Mende, S. B., Immel, T. J., Denton, Michael H., Henderson, M. G., Brandt, P. C., Singer, H.   +8 more
core  

The influence of solar wind variability on magnetospheric ULF wave power

, 2015
Magnetospheric ultra-low frequency (ULF) oscillations in the Pc 4–5 frequency range play an important role in the dynamics of Earth's radiation belts, both by enhancing the radial diffusion through incoherent interactions and through the coherent drift ...
Murphy, KR, Rae, IJ, D. Pokhotelov, I. R. Mann, K. R. Murphy, I. J. Rae, Pokhotelov, D, Mann, IR   +7 more
core   +1 more source