Results 31 to 40 of about 2,661,265 (220)

Interstellar Conditions Deduced from Interstellar Neutral Helium Observed by IBEX and Global Heliosphere Modeling

The Astrophysical Journal, 2023
In situ observations of interstellar neutral (ISN) helium atoms by the IBEX-Lo instrument on board the Interstellar Boundary Explorer (IBEX) mission are used to determine the velocity and temperature of the pristine very local interstellar medium (VLISM).
P. Swaczyna, M. Bzowski, J. Heerikhuisen, M. A. Kubiak, F. Rahmanifard, E. J. Zirnstein, S. A. Fuselier, A. Galli, D. J. McComas, E. Möbius, N. A. Schwadron   +10 more
doaj   +1 more source

Interaction between massive star winds and the interstellar medium

Proceedings of the International Astronomical Union, 2021
AbstractMassive stars drive strong winds that impact the surrounding interstellar medium, producing parsec-scale bubbles for isolated stars and superbubbles around young clusters. These bubbles can be observed across the electromagnetic spectrum, both the wind itself and the swept up interstellar gas.
openaire   +2 more sources

Galactic winds and circulation of the interstellar medium in dwarf galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 1999
We study, through 2D hydrodynamical simulations, the feedback of a starburst on the ISM of typical gas-rich dwarf galaxies. The main goal is to address the circulation of the ISM and metals following the starburst. We assume a single-phase rotating ISM in equilibrium in the galactic potential generated by a stellar disc and a spherical dark halo.
A. D'Ercole, F. Brighenti
openaire   +1 more source

Cosmic-ray driven galactic winds from the warm interstellar medium

Monthly Notices of the Royal Astronomical Society, 2023
ABSTRACT We study the properties of cosmic-ray (CR) driven galactic winds from the warm interstellar medium using idealized spherically symmetric time-dependent simulations. The key ingredients in the model are radiative cooling and CR-streaming-mediated heating of the gas.
Shaunak Modak, Eliot Quataert, Yan-Fei Jiang, Todd A Thompson   +3 more
openaire   +2 more sources

Turbulence transport throughout the heliosphere [PDF]

, 2007
We employ a turbulence transport model to compute distributions of turbulence throughout the heliosphere. The model determines the radial dependence of three (coupled) quantities that characterize interplanetary turbulence, the energy per unit mass, the ...
Matthaeus, William H., Oughton, Sean, Minnie, J., Smith, Charles W., Bieber, J.W., Isenberg, P.A., Breech, Ben   +6 more
core   +2 more sources

The density distribution and 58.4 nm radiation intensity of interstellar helium in the heliosphere: a model simulation

Earth and Planetary Physics
Research on the interstellar medium and its interaction with the solar system constitutes a significant topic in planetary physics. As the Sun traverses the local interstellar cloud, interstellar neutrals penetrate the heliosphere, forming the ...
JiaLing Lyu, ChongJing Yuan, Fei He, BeiLi Ying   +3 more
doaj   +1 more source

Molecular filming: A director's grammar for visualizing chemistry in motion

Bulletin of the Korean Chemical Society, EarlyView.
Molecular filming names the practice, not just the product, of ultrafast structural science. In deliberate analogy to molecular editing, which rewrites connectivity in space, molecular filming records geometry in time, assembling time‐ordered structural frames into a movie of atomic motion and recasting the field as a grammar of directorial choices ...
Hyotcherl Ihee
wiley   +1 more source

Evidence of direct detection of interstellar deuterium in the local interstellar medium by IBEX [PDF]

, 2013
We report the first in situ measurements of neutral deuterium originating in the local interstellar medium (LISM) in Earth’s orbit. These measurements were performed with the IBEX-Lo camera on NASA’s interstellar boundary explorer (IBEX) satellite.
Möbius, E., L. Saul, M. A. Kubiak, Wurz, Peter, D. F. Rodríguez Moreno, N. Schwadron, E. Möbius, Saul, Lukas, Bzowski, M., McComas, D. J., J. M. Sokół, Rodriguez Moreno, Diego Francisco, Fuselier, S. A., Sokół, J. M., Schwadron, N., P. Wurz, M. Bzowski, P. Frisch, Kubiak, M. A., D. J. McComas, Frisch, P., S. A. Fuselier   +21 more
core   +2 more sources

Size Matters: Barrier Heights and Widths in the Kinetics Of Tautomerisation and Rotamerisation of Thiotropolone and Its Five‐ and Three‐Membered Cyclic Analogues

International Journal of Chemical Kinetics, EarlyView.
ABSTRACT Recent experiments by Nunes et al. have demonstrated that unprecedented control of chemical reactions is possible by narrowband infrared vibrational photo‐excitation at low temperatures in inert matrices. The generated higher energy level conformers may then undergo rotamerisation and tautomerisation reactions which provide extremely useful ...
Judith Wurmel, John M. Simmie
wiley   +1 more source

Density Spectrum in the Diffuse Interstellar Medium and Solar Wind

The Astrophysical Journal, 2004
Inertial range turbulence properties are investigated for nearly incompressible density fluctuations using two-dimensional nonlinear fluid simulations. We find that density fluctuations behave as a passive scalar and do not satisfy the pseudosound approximation.
S. Dastgeer, G. P. Zank
openaire   +1 more source