Results 61 to 70 of about 462,332 (215)

Electron Acceleration Efficiency at Earth’s Bow Shock: Statistical Results

open access: yesThe Astrophysical Journal
In this paper, we present a statistical study of electron acceleration efficiency in 1492 selected bow shock events. We define the acceleration efficiency as $\eta ={n}_{{\rm{dn}}}/{n}_{{\rm{am}}}$ , where ${n}_{{\rm{dn}}}$ and n _am are the downstream ...
G. Qin, S. Wang, F.-J. Kong
doaj   +1 more source

The Continuity and Rupture of the ‘New Washington Consensus’: From Biden to Trump 2.0

open access: yesGlobal Policy, EarlyView.
ABSTRACT The ‘New Washington Consensus’ (NWC) represents a major intellectual shift in the US approach to global economic governance. However, the NWC has never been subject to systematic academic critique. With Trump's return to the White House ushering in a new era of US trade policy, the NWC is widely considered to be politically irrelevant in the ...
Ming Du
wiley   +1 more source

A comparative review of bow shocks and magnetopauses [PDF]

open access: yes, 1984
Bow shock and magnetopauses formation is discussed. Plasma and magnetic field environments of all the planets from Mercury to Saturn were measured. It was found that all the planets have bow shocks and almost all have a magnetopause.
Lepping, R. P.
core  

3D model of bow shocks

open access: yes, 2010
Context. Shocks produced by outflows from young stars are often observed as bow-shaped structures in which the H2 line strength and morphology are characteristic of the physical and chemical environments and the velocity of the impact. Aims.
Kristensen, L. E.   +16 more
core   +1 more source

Long extra-tropical planetary wave propagation in the presence of slowly varying mean flow and bottom topography. II: ray propagation and comparison with observations [PDF]

open access: yes, 2003
Ray theory is used to predict phase and group velocities for long planetary waves under realistic, albeit slowly varying, oceanic conditions. The results are compared with local theory using fields smoothed to the same amount (9° latitude/longitude) as ...
Killworth, Peter D.   +9 more
core   +1 more source

Suprathermal Electron Spectra at the Earth’s Bow Shock

open access: yesThe Astrophysical Journal Letters
We present a statistical study of in situ acceleration of ∼0.4–200 keV suprathermal electrons at the Earth’s bow shock, using Wind 3D Plasma and Energetic Particle measurements from 1994 November to 2004 May.
Xinnian Guo   +3 more
doaj   +1 more source

Toward a Politics of (In)Fertility: Reproductive Debility in Africa

open access: yesAmerican Anthropologist, EarlyView.
ABSTRACT Sub‐Saharan Africa has some of the highest estimated rates of infertility or involuntary childlessness in the world, leading epidemiologists to refer to parts of the region as the “infertility belt.” The medicalization of infertility and the situating of assisted reproductive technologies (ARTs) as the treatment for infertility have siphoned ...
Tessa Moll
wiley   +1 more source

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

open access: yesThe 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   +4 more
doaj   +1 more source

The Utility of Infrasound in Global Monitoring of Extraterrestrial Impacts: A Case Study of the 2008 July 23 Tajikistan Bolide

open access: yesThe Astronomical Journal
Among the various observational techniques used for the detection of large bolides on a global scale is a low-frequency sound known as infrasound. Infrasound, which is also one of the four sensing modalities used by the International Monitoring System ...
Elizabeth A. Silber
doaj   +1 more source

Computed tomography reveals multiple origins of extreme caudal vertebral pneumaticity in sauropod dinosaurs

open access: yesJournal of Anatomy, EarlyView.
Here, we present novel CT scan data of caudal vertebrae of six Middle–Late Jurassic sauropods, representing several eusauropod lineages. We synthesise these new data with a comprehensive critical appraisal of purported external and internal evidence for caudal vertebral PSP in Sauropodomorpha.
Samantha L. Beeston   +5 more
wiley   +1 more source

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