A5100655978- Solar and Space Plasma Dynamics
- Ionosphere and magnetosphere dynamics
- Astro and Planetary Science
- Stellar, planetary, and galactic studies
- Magnetic Field Sensors Techniques
- Grey System Theory Applications
- Inertial Sensor and Navigation
Nanjing University
2023
Context: Stellar flares have an impact on habitable planets. To relate the observations of Sun with those stars, one needs to use a Sun-as-a-star analysis, that is, degrade resolution single point. With data observations, simulation solar is required provide systemic clue for study. Aims: We aim explore how spectrum varies flare magnitude and location based grid models. Methods: Using 1D radiative hydrodynamics modeling multi-thread assumption, we obtained typical enhancement chromospheric...
Context. Stellar flares have an impact on habitable planets. To relate the observations of Sun with those stars, one needs to use a Sun-as-a-star analysis, that is, degrade resolution single point. With data observations, simulation solar is required provide systemic clue for study. Aims. We aim explore how spectrum varies flare magnitude and location based grid models. Methods. Using 1D radiative hydrodynamics modeling multi-thread assumption, we obtained typical enhancement chromospheric...
Abstract Solar magnetic field measurements mainly use the Zeeman effect, but this method has two problems, namely, low accuracy of transverse components and 180° ambiguity. Multi-perspective observations can increase measurement resolve This study investigates how combined from Sun-Earth L5 point, line, solar polar-orbiting satellites improve under different satellite positional configurations. A three-satellite model is developed using spherical trigonometry to establish coordinate...
Abstract Quasars serve as important cosmological probes and constructing accurate luminosity relations for them is essential their use in cosmology. If the coefficients of quasar's relation vary with redshift, it could introduce biases into constraints derived from quasars. In this paper, we conduct a detailed analysis redshift variation X-ray ultraviolet (UV) ($L_\mathrm{X}$-$L_\mathrm{UV}$) For standard $L_\mathrm{X}$-$L_\mathrm{UV}$ relation, find that exhibit strong linear correlation...
Abstract The periodic coronal rain and in-phase radiative intensity pulsations have been observed in multiple wavelengths recent years. However, due to the lack of three-dimensional magnetic fields thermodynamic data observations, it remains challenging quantify heating rate that drives mass cycles. In this work, based on MURaM code, we conduct a magnetohydrodynamic simulation spanning from convective zone corona, where solar atmosphere is heated self-consistently through dissipation...
Context. The Si IV lines at 1394 \r{A} and 1403 form in the solar atmosphere a temperature of $\sim10^{4.8}$ K. They are usually considered optically thin, but their opacity can be enhanced during flares. Traditionally, intensity ratio these used as an indicator optical thickness. However, observations have shown wavelength-dependent profile $r(\Delta\lambda)$ to lines. Aims. We aim study variation flares physical reasons behind it. Method. profiles calculated from one-dimensional radiative...
The periodic coronal rain and in-phase radiative intensity pulsations have been observed in multiple wavelengths recent years. However, due to the lack of three-dimensional magnetic fields thermodynamic data observations, it remains challenging quantify heating rate that drives mass cycles. In this work, based on MURaM code, we conduct a magnetohydrodynamic simulation spanning from convective zone corona, where solar atmosphere is heated self-consistently through dissipation resulting...