Results 61 to 70 of about 5,898 (199)

Incremental Shifts, Strategic Orbits: The Evolution of EU Space Policy Through Gradual Security Linkages

Global Policy, EarlyView.
ABSTRACT This article examines the evolution of European Union (EU) space policy through the lens of historical institutionalism, highlighting how security and defence considerations have been incrementally integrated into a domain originally framed as civilian and scientific.
Gustavo G. Müller, Philip De Man
wiley   +1 more source

The Effect of Large Scale Magnetic Turbulence on the Acceleration of Electrons by Perpendicular Collisionless Shocks [PDF]

, 2010
We study the physics of electron acceleration at collisionless shocks that move through a plasma containing large-scale magnetic fluctuations. We numerically integrate the trajectories of a large number of electrons, which are treated as test particles ...
Armstrong, Axford, Bell, Burgess, Fan Guo, Giacalone, Giacalone, Giacalone, Giacalone, Joe Giacalone, Jokipii, Jones, Krymsky, Leroy, Lowe, Lu, Ng, Press, Pulupa, Sagdeev   +19 more
core   +1 more source

Role of ULF Waves in Reforming the Martian Bow Shock

AGU Advances
Understanding the nature of planetary bow shocks is beneficial for advancing our knowledge of solar wind interactions with planets and fundamental plasma physics processes.
Chi Zhang, Chuanfei Dong, Terry Z. Liu, Christian Mazelle, Savvas Raptis, Hongyang Zhou, Jacob Fruchtman, Jasper Halekas, Jing‐Huan Li, Kathleen G. Hanley, Shannon M. Curry, David L. Mitchell, Xinmin Li   +12 more
doaj   +1 more source

Cluster magnetic field observations at a quasi-parallel bow shock [PDF]

Annales Geophysicae, 2002
We present four-point Cluster magnetic field data from a quasi-parallel shock crossing which allows us to probe the three-dimensional structure of this type of shock for the first time. We find that steepened ULF waves typically have a scale larger
E. A. Lucek, E. A. Lucek, T. S. Horbury, M. W. Dunlop, P. J. Cargill, S. J. Schwartz, A. Balogh, P. Brown, C. Carr, K.-H. Fornacon, E. Georgescu, E. Georgescu   +11 more
doaj   +1 more source

The effects of stellar winds and magnetic fields on exoplanets

, 2013
The great majority of exoplanets discovered so far are orbiting cool, low-mass stars whose properties are relatively similar to the Sun. However, the stellar magnetism of these stars can be significantly different from the solar one, both in topology and
Vidotto, A. A.
core   +1 more source

The Outsiders: Principled Withdrawal, Whiteness, and Power in the Los Angeles Food Justice Movement

American Anthropologist, EarlyView.
ABSTRACT This article draws on understandings of whiteness and the misconstrual of South Central Los Angeles to analyze the power dynamics between “outsider” activists and residents of South Central as they worked toward a more equitable food system.
Hanna Garth
wiley   +1 more source

Energy Dissipation in Strong Collisionless Shocks: The Crucial Role of Ion-to-electron Scale Separation in Particle-in-cell Simulations

The Astrophysical Journal Letters
Energy dissipation in collisionless shocks is a key mechanism in various astrophysical environments. Its nonlinear nature complicates analytical understanding and necessitates particle-in-cell (PIC) simulations. This study examines the impact of reducing
Mohamad Shalaby
doaj   +1 more source

Interplanetary Magnetic Field Effect on the Location of the Martian Bow Shock: MAVEN Observations

The Astrophysical Journal, 2023
The Martian bow shock (BS) is generated with the mass-loading and magnetic pileup processes when the solar wind interacts with the Martian ionosphere. In this vein, the interplanetary magnetic field (IMF) frozen in the solar wind can affect the location ...
H. Y. Sui, M. Wang, J. Y. Lu, Y. Zhou, J. Wang   +4 more
doaj   +1 more source

Cometary shaped sources at the Galactic Center - Evidence for a wind from the central 0.2 pc [PDF]

, 2010
In 2007 we reported two cometary shaped sources in the vicinity of Sgr A* (0.8" and 3.4" projected distance), named X7 and X3. The symmetry axes of the two sources are aligned to within 5 degrees in the plane of the sky and the tips of their bow-shocks ...
A. Eckart, Acker, Baganoff, Beloborodov, Benedettini, Blandford, Blöcker, Bouret, Bower, Brandner, Comerón, Eckart, Eckart, Eckart, Eisenhauer, Figer, Figer, G. Witzel, Ghez, Ghez, Gillessen, K. Mužić, Laor, Lu, Lutz, M. Zamaninasab, Mac Low, Marrone, Mathis, Muzic, Muzic, Najarro, Nisini, Paumard, Paumard, Portegies Zwart, Povich, R. Buchholz, R. Schödel, Raga, Schödel, Schödel, Schödel, Tanner, Van Buren, Villaver, Yuan, Yusef-Zadeh, Yusef-Zadeh, Yusef-Zadeh, Zhang, Zhao   +51 more
core   +1 more source

A leucine‐rich‐repeat receptor‐like kinase SERL1 phosphorylates and stabilizes OsALDH2B1 to promote alkaline tolerance and grain size in rice

Journal of Integrative Plant Biology, EarlyView.
The rice aldehyde dehydrogenase OsALDH2B1 enhances grain size and tolerance to alkaline soil by repressing GRAIN SIZE 3 and activating catalases. SERL1‐mediated phosphorylation stabilizes OsALDH2B1 under stress, establishing a signaling axis that overcomes growth‐defense trade‐offs and provides a direct target for breeding high‐yield, alkaline ...
Zemin Ma, Xuanlin Gao, Shuaizu An, Mengyuan Chen, Biaoming Zhang, Lei Zhou, Shengyuan Sun, Ming Li, Feng Yu, Shiyou Lü, Zhaohui Chu, Aiqing You, Yinggen Ke, Pingfang Yang   +13 more
wiley   +1 more source