Results 91 to 100 of about 41,542 (217)

Multi‐isotope (N, O, Ti, and Cr) study of C1 and CM‐like clasts—Probing unsampled C1 material

Meteoritics &Planetary Science, Volume 60, Issue 5, Page 1073-1094, May 2025.
Abstract A multi‐element isotope (N, O, Ti, and Cr) study was conducted on C1 and CM‐like clasts hosted in achondrites and chondrite breccias to understand the genesis of these chondritic clasts. The mineralogy, O, and N isotopes confirm that CM‐like clasts in howardites and polymict eucrites closely resemble CM chondrite‐like material.
Markus Patzek, Yogita Kadlag, Miriam Rüfenacht, Evelyn Füri, Andreas Pack, Addi Bischoff, Harry Becker, Robbin Visser, Timm John, Maria Schönbächler   +9 more
wiley   +1 more source

Numerical Study of Radiative and Dissipative MHD Casson Nanofluid Over a Cone With High‐Order Chemical Reaction

Engineering Reports, Volume 7, Issue 4, April 2025.
This study investigated the dissipative effects on time‐dependent Casson nanofluid motion over a cone, considering variable heat source/absorption and higher‐order reacting species. Water ethylene glycol was employed as the Casson base fluid. The proposed model has broad applicability across various scientific, engineering, and technological domains ...
L. Joseph Sademaki, B. Prabhakar Reddy, P. M. Matao   +2 more
wiley   +1 more source

The Hermean Helium Exosphere—Continuous and Sporadic Helium Release Processes

Journal of Geophysical Research: Planets, Volume 130, Issue 4, April 2025.
Abstract Since its detection by Mariner 10, helium has been a key focus in studies of Mercury's exosphere. Recently, Weichbold et al. (2025), https://doi.org/10.1029/2024je008679 provided the first in situ helium measurements, inferring density from Ion Cyclotron Wave (ICW) events observed by the MESSENGER spacecraft.
J. Hener, P. Wurz, F. Weichbold, H. Lammer, D. Schmid, A. Vorburger   +5 more
wiley   +1 more source

Nuclear interactions of low-energy cosmic rays with the interstellar medium

, 2011
Cosmic rays of kinetic energies below ~1 GeV per nucleon are thought to play a key role in the chemistry and dynamics of the interstellar medium. They are also thought to be responsible for nucleosynthesis of the light elements Li, Be, and B.
Kiener, J., Tatischeff, V.
core   +1 more source

NAIRAS Version 3 Atmospheric Ionizing Radiation Validation: Comparisons to RaD‐X Measurements

Space Weather, Volume 23, Issue 4, April 2025.
Abstract The Nowcast of Aerospace Ionizing RAdiation System (NAIRAS) model predicts dosimetric and radiative flux quantities for assessing human radiation exposure levels and radiation effects on flight electronic systems from the surface of the Earth to deep space. NAIRAS version 3 includes many updates and improvements to the model.
Christopher J. Mertens, Guillaume P. Gronoff, Daniel B. Phoenix   +2 more
wiley   +1 more source

Plasma Turbulence in the Local Bubble

, 2008
Turbulence in the Local Bubble could play an important role in the thermodynamics of the gas that is there. The best astronomical technique for measuring turbulence in astrophysical plasmas is radio scintillation.
A. Barnes, A.H. Minter, B.D.G. Chandran, B.J. Rickett, B.J. Rickett, D.P. Cox, F.S. Trang, J.A. Phillips, J.H. Taylor, J.L. Linsky, J.M. Cordes, J.M. Cordes, M. Opher, M.A. Walker, N.D.R. Bhat, P.C. Frisch, R. Lallement, R.N. Manchester, S. Redfield, S.R. Spangler, S.R. Spangler, S.R. Spangler, S.R. Spangler, Steven R. Spangler, W.F. Brisken, W.F. Brisken   +25 more
core   +1 more source

Cloud Formation by Supernova Implosion

The Astrophysical Journal
The deposition of energy and momentum by supernova explosions has been subject to numerous studies in the past few decades. However, while there has been some work that focused on the transition from the adiabatic to the radiative stage of a supernova ...
Leonard E. C. Romano, Manuel Behrendt, Andreas Burkert   +2 more
doaj   +1 more source

Interstellar Knowledge Dynamics

Knowledge has always been an important cornerstone of our civilization, and we believe this will continue to be true for our future interstellar society. In this study, we construct an interstellar knowledge dynamics model, which allows us to explore how innovations would look like in a social system subjected to special relativity.
openaire   +1 more source

Galactic civilizations: Population dynamics and interstellar diffusion [PDF]

The interstellar diffusion of galactic civilizations is reexamined by potential theory; both numerical and analytical solutions are derived for the nonlinear partial differential equations which specify a range of relevant models, drawn from blast wave ...
Newman, W. I., Sagan, C.
core   +1 more source

Dust-evacuated Zones near Massive Stars: Consequences of Dust Dynamics on Star-forming Regions

The Astrophysical Journal
Stars form within dense cores composed of both gas and dust within molecular clouds. However, despite the crucial role that dust plays in the star formation process, its dynamics is frequently overlooked, with the common assumption being a constant ...
Nadine H. Soliman, Philip F. Hopkins, Michael Y. Grudić   +2 more
doaj   +1 more source