Results 71 to 80 of about 1,495,918 (202)

The Wave-regulated Precursor of a Near-parallel Interplanetary Shock Observed by Parker Solar Probe

The Astrophysical Journal Letters
Diffusive shock acceleration, at shocks from coronal mass ejections to supernova remnant blast waves, presupposes a scattering wave field that the accelerated particles themselves maintain. This self-regulation has not been resolved in situ.
I. C. Jebaraj, L. Colomban, O. V. Agapitov, M. Gedalin, M. A. Malkov, A. Kouloumvakos, E. Husidic, S. Mondal, S. Yadav, N. Wijsen   +9 more
doaj   +1 more source

Adapted Empirical Modeling of Near‐Sun Solar‐Wind Speeds for Use in Ensemble Forecasts

Space Weather, Volume 24, Issue 9, September 2026.
Abstract Solar wind science and forecasting relies on empirical relations between modeled coronal magnetic‐field structure—particularly flux‐tube expansion and distance to coronal hole boundary—and solar‐wind speed. There is lots of uncertainty in these relations, creating large uncertainties in the inner‐boundary conditions to heliospheric models ...
N. O. Edward‐Inatimi, M. J. Owens, L. Barnard, M. Lang, H. Turner, M. Marsh, S. Gonzi, A. Yeates   +7 more
wiley   +1 more source

Ion “Smoke-ring” Pitch-angle Distributions Measured by the Cassini/MIMI/INCA Instrument Upstream of a Transient Interplanetary Shock at 8.6 au

The Astrophysical Journal
On 2003 October 8, the NASA/Cassini spacecraft encountered a transient interplanetary shock at 17:12 UT when the spacecraft was in the ecliptic plane and 8.6 au from the Sun.
J. Giacalone, R. B. Decker, M. E. Hill, D. G. Mitchell, C. Paranicas   +4 more
doaj   +1 more source

Personalization and Fortification of In‐Space Manufactured Emulsified Beverages for Long‐Term Space Travel

Comprehensive Reviews in Food Science and Food Safety, Volume 25, Issue 5, September 2026.
ABSTRACT The current trend of individualized food items (nutrient content and flavor) can be particularly valuable to support people's health and well‐being in isolated environments where access to fresh foods and diverse nutrition is difficult. At the same time, bioactive compounds and micronutrients can be employed to countermeasure any health ...
Svenja Schmidt, Ian Fisk, Ni Yang, Maria Saarela, Volker Hessel   +4 more
wiley   +1 more source

The effect of interplanetary acceleration on the propagation of energetic solar particles in prompt events

Astrophysics and Space Science, 1980
Crank-Nicholson solutions are obtained to the time-dependent Fokker-Planck equation for propagation in the interplanetary medium following a point in time injection of energetic solar particles and including the acceleration terms $$\frac{\partial }{{\partial T}}\left( {D_{TT} \frac{{\partial U}}{{\partial T}}} \right) - \frac{\partial }{{\partial T}
Cecchini, S., Moussas, X., Quenby, J.J.
openaire   +2 more sources

The first discovery of a shocked, metasomatised CV3 chondrule‐fragment in a (Al,Cu)‐bearing micrometeorite

Meteoritics &Planetary Science, Volume 61, Issue 9, Page 2269-2283, September 2026.
Abstract We report the discovery of the second (Al,Cu)‐alloy–bearing micrometeorite, FB‐A2, recovered from Mount Gariglione (southern Italy), representing the sixth such occurrence worldwide. Although chondritic in nature, FB‐A2 differs markedly from previously described microspherules.
Giovanna Agrosì, Paola Manzari, Daniela Mele, Johan Villeneuve, Tiziano Catelani, Mattew J. Genge, Luca Bindi   +6 more
wiley   +1 more source

Solar and interplanetary particles re-accelerated at the solar wind termination shock [PDF]

Advances in Space Research, 1999
We consider the acceleration of solar/interplanetary particles at the solar wind termination shock, predict the expected composition and energy spectra, and discuss possible observable ...
openaire   +1 more source

Particle acceleration at reconnecting separator current layers [PDF]

, 2015
The aim of this work is to investigate and characterise particle behaviour in a 3D MHD model of a reconnecting magnetic separator. We use a relativistic guiding-centre test-particle code to investigate electron and proton acceleration in snapshots from ...
E. Parnell, C., J. Threlfall, Threlfall, J., E. H. Stevenson, J., T. Neukirch, C. E. Parnell, Neukirch, T., J. E. H. Stevenson   +7 more
core   +1 more source

Modeling Particle Acceleration and Release from Solar Eruptions

The Astrophysical Journal
Determining the relative contribution of solar flares versus coronal mass ejections in large solar energetic particle (SEP) events is a long-standing problem.
Xiaocan Li, Joel Dahlin, Fan Guo, Bin Zhuang, Sophie Masson, Spiro Antiochos   +5 more
doaj   +1 more source

Acceleration in turbulent channel flow

, 2010
We use Direct Numerical Simulations of turbulent channel flow to study the acceleration A corresponding to the full fluid velocity u and the acceleration a corresponding to the fluctuating velocity u? ? u?hui where hui is the mean flow.
S. W. Coleman, Z. Hu, Chen, L., Vassilicos, J.C., L. Chen, Hu, Zhiwei, Coleman, S.W., J. C. Vassilicos   +7 more
core   +1 more source