Results 61 to 70 of about 2,413,471 (156)

Composition, Mineralogy, and Noble Gas Content of Apollo 17 Particles and Soils From the 73002 Drive Tube

Journal of Geophysical Research: Planets, Volume 130, Issue 3, March 2025.
Abstract As part of the Apollo Next‐Generation Sample Analysis (ANGSA) program, we provide bulk composition, mineralogy, petrology, and noble gas assays of lunar particles and soils from the top half of the 73001/2 double‐drive tube (i.e., 73002) studied by the ANGSA consortium.
Barbara A. Cohen, Natalie M. Curran, Sarah N. Valencia, Catherine M. Corrigan, Emma S. Bullock, Elana G. Alevy, Scott A. Eckley, the ANGSA Science Team   +7 more
wiley   +1 more source

Optical surface photometry of radio galaxies - II. Observations and data analysis [PDF]

, 1999
Optical imaging observations for 50 radio galaxies are presented. For each object isophotal contours, photometric profiles, structural parameters (position angle, ellipticity, Fourier coefficients), and total magnitudes are given.
Falomo, R., Fasano, G., Govoni, F., Scarpa, R.   +3 more
core   +1 more source

Global Transport of Chlorine Species in the Martian Atmosphere and the Resulting Surface Distribution of Perchlorates

Journal of Geophysical Research: Planets, Volume 130, Issue 3, March 2025.
Abstract Recent observations by instruments aboard the ExoMars Trace Gas Orbiter (TGO) have revealed the seasonal presence of hydrogen chloride (HCl $\text{HCl}$) in the Martian atmosphere. This discovery may have important implications for Martian photochemistry as chlorine species are chemically active, and it may provide a link between the ...
K. Rajendran, P. M. Streeter, S. R. Lewis, M. K. D. Duffy, J. A. Holmes, K. S. Olsen, O. Korablev, M. R. Patel   +7 more
wiley   +1 more source

N-body simulations of galaxies and groups of galaxies with the Marseille GRAPE systems [PDF]

, 1998
I review the Marseille GRAPE systems and the N-body simulations done with them. I first describe briefly the available hardware and software, their possibilities and their limitations.
Amram P., Appleton P.N., Athanassoula E., Athanassoula E., Athanassoula E., Athanassoula E., Austin T.B., Barnes J.E., Bingelli B., Carter D., Diaferio A., Diaferio A., Friedli D., Garcia Gomez C., Garijo A., Hernquist L., Higdon J., Higdon J., Makino J., Makino J., Rhee G., Richstone D.O., Richstone D.O., Toomre A.   +23 more
core   +3 more sources

Quantitative Assessment of GOES 8–15 > ${ >} $0.6 and > ${ >} $4 MeV Radiation Belt Electron Fluxes

Space Weather, Volume 23, Issue 3, March 2025.
Abstract On Geostationary Operational Environmental Satellites (GOES) 8–15 (1996–2020), the Energetic Particle Sensor (EPS) included three integral electron channels, with nominal lower energies of 0.6 MeV (E1), 2 MeV (E2) and 4 MeV (E3). The > ${ >} $2 MeV channel has received more attention than the other two channels, because it is used by the NOAA ...
J. V. Rodriguez, M. H. Denton, A. Boudouridis   +2 more
wiley   +1 more source

Galaxy clusters as astrophysical laboratories and probes of cosmology [PDF]

, 2014
Galaxy clusters are the most recent of cosmological structures to have formed by the present time in the currently favoured hierarchical scenario of structure formation and are widely regarded as powerful probes of cosmology and galaxy formation physics alike.
openaire   +2 more sources

Turnover in Gleissberg Cycle Dependence of Inner Zone Proton Flux

Space Weather, Volume 23, Issue 3, March 2025.
Abstract The NOAA POES satellites orbit through the South Atlantic Anomaly (SAA) allowing access to the trapped inner belt high energy proton population. A previous study found a long‐term increase in proton flux averaged over the 11‐year solar cycle oscillation corresponding to solar activity consistent with the Centennial Gleissberg Cycle (CGC).
Kalvyn Adams, Emily Bregou, Mary Hudson, Brian Kress, Richard Selesnick   +4 more
wiley   +1 more source

The Galaxies of Nonstandard Enlargements of Infinite and Transfinite Graphs [PDF]

arXiv, 2004
The galaxies of nonstandard enlargements of conventionally infinite as well as of transfinite graphs are defined, analyzed, and illustrated by some examples. It is then shown that any such enlargement either has exactly one galaxy, its principal one, or it has infinitely many galaxies.
arxiv  

Astrophysically motivated bulge-disc decompositions of Sloan Digital Sky Survey galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2012
28 pages, 34 figures, MNRAS ...
J. E. Gunn, C. N. Lackner
openaire   +4 more sources

Using X‐ray computed microtomography (μCT) to determine subsample‐specific cosmogenic noble gas production rates of E (enstatite) chondrites

Meteoritics &Planetary Science, Volume 60, Issue 3, Page 442-463, March 2025.
Abstract Cosmic ray exposure (CRE) ages provide information about the parent bodies and source regions of meteorite classes. Cosmogenic noble gases are often used to quantify exposure time scales ranging from tens of ka to hundreds of Ma. The production rate of cosmogenic noble gases is primarily controlled by a meteorite's chemical composition ...
M. Mijjum, B. J. Andrews, T. J. McCoy, C. M. Corrigan, M. W. Caffee, M. M. Tremblay   +5 more
wiley   +1 more source