Results 81 to 90 of about 2,661,265 (220)

The local interstellar medium. VII - The local interstellar wind and interstellar material in front of the nearby star Alpha Ophiuchi

The Astrophysical Journal, 1987
IUE observations of Mg I 2852.127 A are used to search for warm interstellar gas in the direction of Alpha Oph. The data on Mg I are first presented, and Mg I as a diagnostic of warm gas is discussed. A cool H I feature found in the direction of Alpha Oph, and which is evidently the origin of most of the observed optical and ultraviolet lines, is ...
P. C. Frisch, D. G. York, J. R. Fowler
openaire   +1 more source

Evaluating maturity of organic matter in hydrated C1 and CM‐like clasts and a dehydrated clast within a polymict eucrite and a howardite

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 1965-1993, August 2026.
Abstract Volatile‐rich xenolithic clasts in different types of brecciated meteorites represent unique pristine solar system material. This study investigates the maturity and thermal history of organic matter using Raman spectroscopy and aqueous alteration effects using infrared spectroscopy in the matrix of 15 volatile‐rich clasts (C1 and CM‐like ...
Swarna Prava Das, Alessandro Maturilli, Aurélie Van den Neucker, Markus Patzek, Dipak Kumar Panda, Gopal K. Pradhan, Guneshwar Thangjam, Surya Snata Rout   +7 more
wiley   +1 more source

Cascading from the Winds to the Disk: The Universality of Supernovae-driven Turbulence in Different Galactic Interstellar Media

The Astrophysical Journal
Star-forming galaxies are in a state of turbulence, with one of the principle components of the turbulence sourced by the constant injection of momentum from supernovae (SNe) explosions. Utilizing high-resolution stratified, gravito-hydrodynamical models
Isabelle Connor, James R. Beattie, Anne Noer Kolborg, Enrico Ramirez-Ruiz   +3 more
doaj   +1 more source

Weakly Compressible Magnetohydrodynamic Turbulence in the Solar Wind and the Interstellar Medium

The Astrophysical Journal, 1998
A new four-field system of equations is derived from the compressible magnetohydrodynamic (MHD) equations for low Mach number turbulence in the solar wind and the interstellar medium, permeated by a spatially varying magnetic field. The plasma beta is assumed to be of order unity or less.
A. Bhattacharjee, C. S. Ng, S. R. Spangler   +2 more
openaire   +1 more source

Electrons in the cosmic radiation [PDF]

, 1990
The nature of cosmic ray electrons and their radiation in the Universe has been studied. A convection associated diffusion model is proposed to describe the main characteristics of the large-scale distribution of cosmic ray electrons in the Galaxy: (1) a
Chi, Xinyu, Chi, X
core  

Wind Energy Applications Guide [PDF]

, 2001
The brochure is an introduction to various wind power applications for locations with underdeveloped transmission systems, from remote water pumping to village electrification.

core   +1 more source

A Catalog of Pulsar X-Ray Filaments

The Astrophysical Journal
We present the first Chandra X-ray Observatory (CXO) catalog of “pulsar X-ray filaments,” or “misaligned outflows.” These are linear, synchrotron-radiating features powered by ultrarelativistic electrons and positrons that escape from bow shock pulsars ...
Jack T. Dinsmore, Roger W. Romani
doaj   +1 more source

Interstellar Pathfinder — A Mission to the Inner Edge of the Interstellar Medium [PDF]

, 2003
Interstellar Pathfinder (ISP), our first step into the interstellar medium, is a scientific investigation to study the outer boundary of our heliosphere and the interstellar matter that flows into it.
Livi, S., Schwadron, Nathan A., Geiss, J., Fisk, L. A., Wurz, P., McComas, D. J., Fisk, Lennard A., Möbius, E., Judge, D. L., Woch, J., Gloeckler, George, Gruntman, Mike, Wurz, Peter, Gloeckler, G., Funsten, H. O., Zurbuchen, Thomas H., Mitchell, D. G., Krimigis, S. M., Möbius, Eberhard, Witte, M., Gruntman, M., Roelof, Edmond C., Schwadron, N. A., Zurbuchen, T. H., Geiss, Johannes, Bochsler, P. A., Lin, Robert P., Lin, R. P., Roelof, E. C.   +28 more
core   +1 more source

Anomalous Neutral Hydrogen Column Densities in Local Interstellar Medium Clouds

The Astrophysical Journal
Analysis of high-resolution spectra of the hydrogen and deuterium Ly α lines provides measurements of interstellar neutral hydrogen column densities N (H i ) to 113 stars within 50 pc of the Sun. Plots of N (H i ) versus distance through the LIC, G, Mic,
Jeffrey L. Linsky, Seth Redfield
doaj   +1 more source

Signal Processing for the Measurement of the Deuterium/Hydrogen Ratio in the Local Interstellar Medium

Entropy, 2014
We report on a comprehensive signal processing procedure for very low signal levels for the measurement of neutral deuterium in the local interstellar medium from a spacecraft in Earth orbit.
Diego Francisco Rodríguez Moreno, Peter Wurz, Lukas Saul, Maciej Bzowski, Marzena Aleksanda Kubiak, Justyna Maria Sokół, Priscilla Frisch, Stephen Anthony Fuselier, David John McComas, Eberhard Möbius, Nathan Schwadron   +10 more
doaj   +1 more source