Results 11 to 20 of about 6,274 (132)

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

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

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
doaj   +1 more source

Scalar perturbations in f(T) gravity using the $$1 + 3$$ 1+3 covariant approach

European Physical Journal C: Particles and Fields, 2020
The cosmological scalar perturbations of standard matter are investigated in the context of extended teleparallel f(T) gravity theories using the $$1+3$$ 1+3 covariant formalism.
Shambel Sahlu, Joseph Ntahompagaze, Amare Abebe, Álvaro de la Cruz-Dombriz, David F. Mota   +4 more
doaj   +1 more source

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

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

Formation of a Long Filament Through the Connection of Two Filament Segments Observed by CHASE

The Astrophysical Journal Letters, 2023
We present imaging and spectroscopic diagnostics of a long filament during its formation with the observations from the Chinese H α Solar Explorer and Solar Dynamics Observatory.
H. T. Li, X. Cheng, Y. W. Ni, C. Li, S. H. Rao, J. H. Guo, M. D. Ding, P. F. Chen   +7 more
doaj   +1 more source

Broad-band modelling of the GRB 230812B afterglow: Implications for very-high-energy γ-ray detections with IACTs

Astronomy & Astrophysics
A significant fraction of the energy from the gamma-ray burst (GRB) jets, after powering the keV–MeV emission, forms an ultra-relativistic shock propagating into the circum-burst medium.
Mohnani S., Banerjee B., Miceli D., Nava L., Oganesyan G., Tiwari P., Ierardi A., De Santis A. L., Macera S., Shukla A., Branchesi M., Chatterjee S., Agarwal S., Datta A., Yadav K. K., Anupama G. C.   +15 more
doaj   +1 more source

Testing General Relativity with Low-Frequency, Space-Based Gravitational-Wave Detectors

Living Reviews in Relativity, 2013
We review the tests of general relativity that will become possible with space-based gravitational-wave detectors operating in the ∼ 10^{-5} – 1 Hz low-frequency band.
John G. Baker, Shane L. Larson, Jonathan R. Gair, Michele Vallisneri   +3 more
doaj   +1 more source

Multi-satellite study of the excitation of Pc3 and Pc4-5 ULF waves and their penetration across the plasmapause during the 2003 Halloween superstorm [PDF]

Annales Geophysicae, 2015
We use multi-satellite and ground-based magnetic data to investigate the concurrent characteristics of Pc3 (22–100 mHz) and Pc4-5 (1–22 mHz) ultra-low-frequency (ULF) waves on the 31 October 2003 during the Halloween magnetic superstorm. ULF waves are
G. Balasis, I. A. Daglis, I. R. Mann, C. Papadimitriou, C. Papadimitriou, E. Zesta, M. Georgiou, R. Haagmans, K. Tsinganos   +8 more
doaj   +1 more source