Results 51 to 60 of about 5,880 (188)

Electron Heating in 2D Particle-in-cell Simulations of Quasi-perpendicular Low-beta Shocks

The Astrophysical Journal
We measure the thermal electron energization in 1D and 2D particle-in-cell simulations of quasi-perpendicular, low-beta ( β _p = 0.25) collisionless ion–electron shocks with mass ratio m _i / m _e = 200, fast Mach number ${{ \mathcal M }}_{\mathrm{ms}}=1$
Aaron Tran, Lorenzo Sironi
doaj   +1 more source

Observations of the spatial and temporal structure of field-aligned beam and gyrating ring distributions at the quasi-perpendicular bow shock with Cluster CIS [PDF]

Annales Geophysicae, 2001
During the early orbit phase, the Cluster spacecraft have repeatedly crossed the perpendicular Earth’s bow shock and provided the first multi-spacecraft measurements. We have analyzed data from the Cluster Ion Spectrometry experiment (CIS), which
E. Möbius, H. Kucharek, C. Mouikis, E. Georgescu, L. M. Kistler, M. A. Popecki, M. Scholer, J. M. Bosqued, H. Rème, C. W. Carlson, B. Klecker, A. Korth, G. K. Parks, J. C. Sauvaud, H. Balsiger, M.-B. Bavassano-Cattaneo, I. Dandouras, A. M. DiLellis, L. Eliasson, V. Formisano, T. Horbury, W. Lennartsson, R. Lundin, M. McCarthy, J. P. McFadden, G. Paschmann   +25 more
doaj   +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

Assessing National Sustainability Transitions in Europe: A Dynamic MCDA and Clustering‐Based Approach

Sustainable Development, EarlyView.
ABSTRACT The study evaluates the sustainable development of 42 European countries using a multi‐criteria decision analysis (MCDA) approach, based on 29 indicators covering the economic, social, and environmental pillars. All three pillars are assessed both individually and in consolidated form to provide a comprehensive view of countries ...
Una Smailbegovic, Džana Kadric, Edin Kadric, Simon Glöser Chahoud   +3 more
wiley   +1 more source

Nitrogen deposition does not exacerbate phosphorus limitation of rhizosphere microbes in subalpine forests

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The stoichiometric imbalance caused by nitrogen (N) deposition typically exacerbates phosphorus (P) limitation in plants. However, it remains unclear whether this effect extends to soil microbes, particularly those in the rhizosphere.
Jipeng Wang, Min Li, Dungang Wang, Huangxin Zhang, Na Li, Huajun Yin   +5 more
wiley   +1 more source

Mach Number Scaling of Foreshock Magnetic Fluctuations at Quasi-parallel Bow Shocks and Their Role in Magnetospheric Driving Throughout the Solar System

The Astrophysical Journal
Upstream of quasi-parallel bow shocks, reflected ions generate ion–ion instabilities. The resulting magnetic fluctuations can advect through the shock and interact with planetary magnetospheres.
Brandon L. Burkholder, Li-Jen Chen, Katariina Nykyri, Norberto Romanelli, Menelaos Sarantos, Dave Sibeck, Jaye Verniero, Gina A. DiBraccio, Daniel Gershman, Martin Lindberg, Erin Kincade   +10 more
doaj   +1 more source

Spatial distribution of upstream magnetospheric ≥50 keV ions [PDF]

Annales Geophysicae, 2000
We present for the first time a statistical study of \geq50 keV ion events of a magnetospheric origin upstream from Earth's bow shock. The statistical analysis of the 50-220 keV ion events observed by the IMP-8 spacecraft shows: (1) a dawn-dusk ...
G. C. Anagnostopoulos, G. C. Anagnostopoulos, G. Argyropoulos, G. Argyropoulos, G. Kaliabetsos, G. Kaliabetsos   +5 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

Characterization of Saturn's bow shock: magnetic field observations of quasi-perpendicular shocks [PDF]

, 2016
Collisionless shocks vary drastically from terrestrial to astrophysical regimes resulting in radically different characteristics. This poses two complexities.
Dougherty, MK, Masters, A, Sulaiman, AH
core   +1 more source

Too hot for comfort: Elevated temperatures influence gene expression and exceed thermal tolerance of bigmouth shiners, Ericymba dorsalis

Journal of Fish Biology, EarlyView.
Abstract Environmental and associated ecosystem change may affect the persistence of fish species based on their ability to adapt to changing conditions, including decreasing flows and rising water temperatures. Exceeding the thermal tolerances of stream fish will likely result in a loss of ability to maintain metabolic processes.
Ella K. Humphrey, Jonathan J. Spurgeon, Lizbeth Bowen, Robert E. Wilson, Shannon C. Waters‐Dynes, Braxton M. Newkirk, Sarah A. Sonsthagen   +6 more
wiley   +1 more source