Results 21 to 30 of about 172,436 (251)

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

Human crew-related aspects for astrobiology research [PDF]

, 2011
Several space agencies and exploration stakeholders have a strong interest in obtaining information on technical and human aspects to prepare for future extra-terrestrial planetary exploration.
Foing, B.H., Pletser, V., Thiel, C.S.
core   +2 more sources

INSA scientific activities in the space astronomy area

, 2010
Support to Astronomy operations is an important and long-lived activity within INSA. Probably the best known (and traditional) INSA activities are those related with real-time spacecraft operations: Ground station maintenance and operation (Ground ...
Martinez, Ricardo Perez, Portal, Miguel Sanchez   +1 more
core   +1 more source

OPTICON: EC Optical Infrared Coordination Network for Astronomy [PDF]

, 2001
OPTICON, the ICN Optical Infrared Coordination Network for Astronomy, brings together for the first time the operators of all Europe's medium to large optical-infrared telescopes, the largest corresponding data archives, and several user representatives.
Gilmore, Gerard
core   +2 more sources

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

The Wide Field Spectrograph (WiFeS): Performance and Data Reduction

, 2010
This paper describes the on-telescope performance of the Wide Field Spectrograph (WiFeS). The design characteristics of this instrument, at the Research School of Astronomy and Astrophysics (RSAA) of the Australian National University (ANU) and mounted ...
Bloxham, Gabe, Busarello, Gianni, Dopita, Michael, Farage, Catherine, Firth, Peter, Green, Anthony, McGregor, Peter, Merluzzi, Paola, Neilson, Jon, Rhee, Jonghwan, Roberts, Bill, Wilson, Greg, Young, Peter   +12 more
core   +1 more source

HST pre-imaging of a free-floating planet candidate microlensing event

Astronomy & Astrophysics
High-cadence microlensing observations uncovered a population of very short-timescale microlensing events, which are believed to be caused by the population of free-floating planets (FFPs) roaming the Milky Way.
Kapusta Mateusz, Mróz Przemek, Ryu Yoon-Hyun, Udalski Andrzej, Kozłowski Szymon, Terry Sean, Szymański Michał K., Soszyński Igor, Pietrukowicz Paweł, Poleski Radosław, Skowron Jan, Ulaczyk Krzysztof, Gromadzki Mariusz, Rybicki Krzysztof, Iwanek Patryk, Wrona Marcin, Mróz Mateusz J., Albrow Michael D., Chung Sun-Ju, Gould Andrew, Han Cheongho, Hwang Kyu-Ha, Jung Youn Kil, Shin In-Gu, Shvartzvald Yossi, Yee Jennifer C., Yang Hongjing, Zang Weicheng, Cha Sang-Mok, Kim Dong-Jin, Kim Seung-Lee, Lee Chung-Uk, Lee Dong-Joo, Lee Yongseok, Park Byeong-Gon, Pogge Richard W.   +35 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

Infrared Nanocrystals for Space Application: Hardness to Irradiations

Advanced Functional Materials, EarlyView.
This article investigates infrared HgTe nanocrystals under X‐ray and ion irradiation, revealing remarkable radiation hardness. It uncovers distinct degradation mechanisms and shows that the nanomaterial outperforms integrated electronics. The results position colloidal nanocrystals as promising candidates for resilient space and harsh‐environment ...
Alexandre Neyret, Dario Mastrippolito, Bingbing Xia, Adrien Khalili, Maxime Lebreton, Giorgia Strobbia, Albin Colle, Marco Paye, Mariarosa Cavallo, Erwan Bossavit, Claire Abadie, Yoann Prado, Debora Pierucci, Victor Parahyba, Francois Coursaget, David Darson, Emrick Briand, Ian Vickridge, Stephane Demiguel, Sebastien Massenot, Jean‐Marc Belloir, Vincent Goiffon, Emmanuel Lhuillier   +22 more
wiley   +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