Results 81 to 90 of about 957 (185)
CONSTRAINTS ON THE DECOMPOSITION OF THE ROTATION CURVES OF SPIRAL GALAXIES [PDF]
The Identification of Dark Matter, 2003 I discuss anew how arguments about the internal dynamics of galactic disks set constraints on the otherwise ambiguous decomposition of the rotation curves of spiral galaxies into the contributions by the various constituents of the galaxies. Analyzing the two sample galaxies NGC 3198 and NGC 2985 I conclude from the multiplicities of the spiral arms ...
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Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.Abstract We present large‐scale simulations of energetic neutral atom (ENA) emissions at Uranus from a spacecraft viewpoint. Models of magnetic field, extended hydrogen exosphere, moon‐sourced neutral tori, and proton radiation belt are implemented into a simulator to evaluate the production of ENAs for L $L$ = 1–15.
D. Santos‐Costa, N. André
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On the Extraction of Optical Rotation Curves for Spiral Galaxies [PDF]
Journal of Astronomy and Space Sciences, 1998 We discussed four different methods - the single, double and triple Gaussian fits, and the intensity weighted centroid fit - which extract rotation curves from several emission lines ([OII], Hβ, [OIII], and Hα) of spiral galaxies. Spatial extents and the
Young-Jong Sohn +2 more
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Martian Proton Albedo as Signature of Near‐Surface Water
Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.Abstract Understanding the Martian soil water budget is crucial not only for in situ resource utilization in future human missions to Mars, but also for reconstructing the geological and climatic history of the planet, as well as to assess the potential of ancient or even present microbial life.
Jan Leo Löwe +13 more
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Dark matter and rotation curves of stars in galaxies [PDF]
Astronomische Nachrichten, 2001 The dark matter accretion theory (around a central body) of the author on the basis of his 5-dimensional Projective Unified Field Theory (PUFT) is applied to the orbital motion of stars around the center of the Galaxy. The departure of the motion from Newtonian mechanics leads to approximately flat rotation curves being in rough accordance with the ...
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Solar Energetic Particle Prediction in the Inner Heliosphere Using Deep Learning and PSP/IS⊙IS Data
Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 3, June 2026.Abstract Solar events, such as coronal mass ejections and solar flares, accelerate large numbers of energetic charged particles, producing solar energetic particle (SEP) events that can harm astronauts, damage satellites, and potentially damage infrastructure on Earth.
Tate Hutchins +12 more
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The Survival of the Sagittarius Dwarf Galaxy and the Flatnessof the Rotation Curve of the Galaxy
The Astrophysical Journal, 1998 How has the ``fluffy'' core of the Sgr dwarf galaxy survived multiple strong shocks from the tidal force of the Galactic halo and disc since the formation of the core a Hubble time ago? A scenario that Sgr was deflected to its current orbit by the Magellanic Clouds after a rendezvous on the north Galactic pole 2-3 Gyrs ago is examined. It is shown that
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Environmental Microbiology Reports, Volume 18, Issue 3, June 2026.The symbiotic interaction between Demodex folliculorum and Corynebacterium kroppenstedtii subsp. demodicis. Created by the author based on genomic and functional analyses presented in this work. The tripartite interaction between the human host, the mite Demodex folliculorum, and its endosymbiont Corynebacterium kroppenstedtii subsp. demodicis.
T. Steegmüller +6 more
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Journal of Computational Chemistry, Volume 47, Issue 14, 30 May 2026.PES‐trotter is a cross‐platform open‐source application for the exploration and analysis of 3D potential‐energy landscapes associated to molecular systems. Along with video‐game‐like exploration, it allows plotting energy profiles from custom paths, computing critical points and minimum‐energy paths, and playing back dynamical trajectories. PES‐trotter
Erwan Privat +4 more
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Galaxy rotation curves with lognormal density distribution [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 Accepted for publication by MNRAS January 30 ...
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