A5036419200- Solar and Space Plasma Dynamics
- Stellar, planetary, and galactic studies
- Astro and Planetary Science
- Astronomy and Astrophysical Research
- Astrophysics and Star Formation Studies
- Ionosphere and magnetosphere dynamics
- Atomic and Molecular Physics
- Laser-Plasma Interactions and Diagnostics
Nanjing University
2023-2024
Abstract The statistical characteristics of stellar flares at optical bands have received extensive study, but they remain to be studied soft X-ray bands, in particular for solar-type stars. Here, we present a study on stars, which can help understanding the multiwavelength behaviors flares. We mainly use Chandra Source Catalog Release 2.0, includes number flaring stars with denoted variability, and Gaia Data 3, necessary information classifying also develop set methods identifying...
Abstract Sun-as-a-star spectroscopic characteristics of solar flares can be used as a benchmark for the detection and analysis stellar flares. Here, we study properties an X1.0 flare, using high-resolution data obtained by Chinese H α Solar Explorer (CHASE). A noise reduction algorithm based on discrete Fourier transformation is first employed to enhance signal-to-noise ratio space-integral spectrum, with focus its typical characteristics. For flare interest, find that average profile...
The dynamo theory has always been one of the biggest mysteries in stellar physics. One key reason for its uncertainty is poor knowledge process on stars except Sun. most important observation feature solar that active regions only appear at low latitudes, which provides a crucial constraint to theory, while Doppler imaging, current technique spatially resolve hemisphere, difficult distinguish equatorial region . Hence, latitudinal distribution (LDAR) ambiguous and controversial, mainly due...
The dynamo theory has always been one of the biggest mysteries in stellar physics. One key reason for its uncertainty is poor knowledge process on stars other than Sun. most important observed feature solar that active regions only appear at low latitudes, which provides a crucial constraint to theory, while with Doppler imaging, current technique spatially resolve hemisphere, it difficult distinguish equatorial region. As consequence, latitudinal distribution (LDAR) ambiguous and...
Sun-as-a-star spectroscopic characteristics of solar flares can be used as a benchmark for the detection and analyses stellar flares. Here, we study properties an X1.0 flare using high-resolution data obtained by Chinese $\mathrm{H} \alpha$ Solar Explorer (CHASE). A noise reduction algorithm based on discrete Fourier transformation is first employed to enhance signal-to-noise ratio space-integral spectrum with focus its typical characteristics. For interest, find that average profile...
The statistical characteristic of stellar flares at optical bands has received an extensive study, but it remains to be studied soft X-ray bands, in particular for solar-type stars. Here, we present a study on stars, which can help understand multi-wavelength behaviors flares. We mainly use Chandra Source Catalog Release 2.0, includes number flaring stars with denoted variability, and Gaia Data 3, necessary information classifying also develop set methods identifying estimating their...
The interaction between the supersonic jet and background can influence process of star formation, this also results in a change jet's velocity, direction density through shock waves. However, due to limitations current astronomical facilities, fine structure detailed still remain unclear. Here we investigate plasma dynamics under different collision states laser-driven experiments. A double-shock is shown optical diagnosis for case, but integrated self-emitting X-ray characteristic...
Magnetic reconnection, breaking and reorganization of magnetic field topology, is a fundamental process for rapid release energy into plasma particles that occurs pervasively throughout the universe. In most natural circumstances, properties on either side reconnection layer are asymmetric, in particular collision rates associated with combination density temperature critically determine mechanism. To date, all laboratory experiments reconnections have been limited to purely collisional or...