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Observations of Geomagnetic Crochet at High‐Latitudes Due To X1.5 Class Solar Flare on 3 July 2021

Space Weather
On 3 July 2021, an X1.5 solar flare from the National Oceanic and Atmospheric Administration solar Active Region AR12838 (24°N, 88°W) occurred at 14:18 UT, peaked at 14:29 UT, and decayed at 14:34 UT. The study of this X1.5 solar flare is significant due
S. S. Rao, Nandita Srivastava, Monti Chakraborty, Sandeep Kumar, D. Chakrabarty   +4 more
doaj   +1 more source

Uncovering the heterogeneity of a solar flare mechanism with mixture models

Frontiers in Astronomy and Space Sciences
The physics of solar flares occurring on the Sun is highly complex and far from fully understood. However, observations show that solar eruptions are associated with the intense kilogauss fields of active regions, where free energies are stored with ...
Bach Viet Do, Yang Chen, Yang Chen, XuanLong Nguyen, Ward Manchester   +4 more
doaj   +1 more source

Subsecond Spikes in Fermi GBM X-Ray Flux as a Probe for Solar Flare Particle Acceleration. [PDF]

Astrophys J, 2020
Knuth T, Glesener L.
europepmc   +1 more source

Solar Flare Ion Temperatures

The Astrophysical Journal Letters
Abstract This Letter proposes that the ion temperature is several times the local electron temperature in the hot onset phase and in the above-the-loop region of solar flares. The Letter considers: the evidence of spectral line Doppler widths (“nonthermal” broadening); evidence for “universal” ion and electron temperature increase ...
Alexander J. B. Russell, Vanessa Polito, Paola Testa, Bart De Pontieu, Sergey A. Belov   +4 more
openaire   +3 more sources

Revisiting Approaches to Stellar White-light Flare Energy Based on Spatiotemporally Resolved Solar Observations

The Astrophysical Journal Letters
Accurately estimating the bolometric energy of solar and stellar white-light flares (WLFs) is crucial for understanding their physical nature and impact on surrounding planets.
Yingjie Cai, Yijun Hou, Ting Li, Ying Li, Mingde Ding, Dechao Song, Changwen Zeng, Jifeng Liu   +7 more
doaj   +1 more source

Can Solar Limb Flare Prediction Be Properly Made by Extreme-ultraviolet Intensities?

The Astrophysical Journal Letters
We address the question of whether the solar limb flare prediction can be properly made by EUV intensity, which has less projection effects than solar white light and magnetogram data.
Jaewon Lee, Yong-Jae Moon, Hyun-Jin Jeong, Kangwoo Yi, Harim Lee   +4 more
doaj   +1 more source

Solar Flare [PDF]

Nature, 1973
openaire   +1 more source

The development of lower-atmosphere turbulence early in a solar flare. [PDF]

Sci Adv, 2018
Jeffrey NLS, Fletcher L, Labrosse N, Simões PJA.   +3 more
europepmc   +1 more source

Solar Flares [PDF]

Nature, 1962
openaire   +1 more source

Solar Flare Detection from Sudden Ionospheric Disturbances in VLF Signals via a CNN-HMM Framework. [PDF]

Sensors (Basel)
Velchev Y, Bonev B, Iliev I, Gallagher P, Petkov PZ, Nachev I.   +5 more
europepmc   +1 more source