Results 11 to 20 of about 7,283 (226)

The dynamic universe: realizing the potential of classical time domain and multimessenger astrophysics

Frontiers in Astronomy and Space Sciences
In parallel with the multi-messenger revolution, major advances in time-domain astronomy across multiple science disciplines relevant to astrophysics are becoming more urgent to address.
Steve B. Howell, D. Andrew Howell, D. Andrew Howell, R. A. Street, Melinda Soares-Furtado, Brian Jackson, Thomas P. Greene   +6 more
doaj   +1 more source

A synergistic spectropolarimetric inversion via gradient-bias annealing and physics-informed neural networks

Astronomy & Astrophysics
Context. Spectropolarimetric inversions are usually employed to obtain the physical parameters (e.g., magnetic field, velocity, temperature) of the solar atmosphere that contribute to the observed Stokes spectra.
Chen G. Y., Guo Y., Díaz Baso C. J., Hao Q., Ding M. D.   +4 more
doaj   +1 more source

Astronomy in Chile: Assessment of scientific productivity through a bibliometric analysis

EPJ Web of Conferences, 2018
The skies of Northern Chile are considered among the best in the world for astronomy due to their geographical, climatic and atmospheric conditions. In fact, during the last several decades, a great number of astronomical observatories have been built by
Cortes Rodrigo, Depoortere Denise, Malaver Lucina   +2 more
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Low-energy particle experiments–electron analyzer (LEPe) onboard the Arase spacecraft

Earth, Planets and Space, 2017
In this report, we describe the low-energy electron instrument LEPe (low-energy particle experiments–electron analyzer) onboard the Arase (ERG) spacecraft. The instrument measures a three-dimensional distribution function of electrons with energies of $$\
Yoichi Kazama, Bo-Jhou Wang, Shiang-Yu Wang, Paul T. P. Ho, Sunny W. Y. Tam, Tzu-Fang Chang, Chih-Yu Chiang, Kazushi Asamura   +7 more
doaj   +1 more source

Short-Period Variation of the Activity of Atmospheric Turbulence in the MLT Region over Langfang

Atmosphere, 2023
In this paper, we investigate the activity of atmospheric turbulence in the MLT region and the relationship between the activity of atmospheric turbulence and atmospheric wave activity.
Zewei Wang, Cunying Xiao, Xiong Hu, Junfeng Yang, Xuan Cheng, Qingchen Xu, Luo Xiao, Xiaoqi Wu   +7 more
doaj   +1 more source

Deflection of a filament eruption with three parallel flare ribbons via reconnection at an X-point

Astronomy & Astrophysics
Context. On 2024 May 6, Active Region 13663 produced an X4.5-class flare associated with a filament eruption that exhibited remarkable rotation and deflection dynamics. Aims.
Zhang Xiaomeng, Guo Jinhan, Guo Yang, Ding Mingde, Schmieder Brigitte   +4 more
doaj   +1 more source

Evolution of the Toroidal Flux of CME Flux Ropes during Eruption

The Innovation, 2020
Summary: Coronal mass ejections (CMEs) are large-scale explosions of the coronal magnetic field. It is believed that magnetic reconnection significantly builds up the core structure of CMEs, a magnetic flux rope, during the eruption.
Chen Xing, Xin Cheng, Mingde Ding
doaj   +1 more source

Constraints and observational manifestations of failed solar eruptions in a toroidal magnetic cage

Astronomy & Astrophysics
Context. Observations show that many solar eruptions remain confined in the magnetic configuration of strong overlying magnetic fields, which is commonly referred to as the magnetic cage. Aims.
Guo J. H., Guo Y., Wu H., Schmieder B., Démoulin P., Ni Y. W., Wang C., Poedts S., Li T., Wang W. S., Zhou Y. H., Chen P. F.   +11 more
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Data-driven magnetohydrodynamic simulation of the initiation of a coronal mass ejection with multiple stages

Astronomy & Astrophysics
Coronal mass ejections (CMEs) are the primary drivers of adverse space-weather events, yet their initiation and onset prediction remain insufficiently understood due to the complexity of the magnetic topology and physical processes in real solar source ...
Guo J. H., Poedts S., Schmieder B., Guo Y., Zhou C., Wu H., Ni Y. W., Zhong Z., Zhou Y. H., Li S. H., Chen P. F.   +10 more
doaj   +1 more source

The Hubble Missing Globular Cluster Survey

Astronomy & Astrophysics
The Hubble Missing Globular Cluster Survey (MGCS) has taken one of the last opportunities to complete the census of Galactic globular clusters (GCs) started by past Hubble Space Telescope (HST) programs, securing high-resolution data for 34 GCs never ...
Libralato M., Bellini A., Massari D., Bellazzini M., Aguado-Agelet F., Cassisi S., Ceccarelli E., Dalessandro E., Dodd E., Ferraro F. R., Gallart C., Lanzoni B., Monelli M., Mucciarelli A., Pancino E., Pascale R., Rosignoli L., Salaris M., Saracino S., Zerbinati C.   +19 more
doaj   +3 more sources