Results 71 to 80 of about 617 (181)

Dark Matter Halos from the Inside Out

Advances in Astronomy, 2011
The balance of evidence indicates that individual galaxies and groups or clusters of galaxies are embedded in enormous distributions of cold, weakly interacting dark matter. These dark matter “halos” provide the scaffolding for all luminous structures in
James E. Taylor
doaj   +1 more source

Testing the Collisionless Nature of Dark Matter with the Radial Acceleration Relation in Galaxy Clusters

The Astrophysical Journal, 2023
The radial acceleration relation (RAR) represents a tight empirical relation between the inferred total and baryonic centripetal accelerations, g _tot = GM _tot (< r )/ r ^2 and g _bar = GM _bar (< r )/ r ^2 , observed in galaxies and galaxy clusters ...
Sut-Ieng Tam, Keiichi Umetsu, Andrew Robertson, Ian G. McCarthy   +3 more
doaj   +1 more source

Nitrogen Status Rewires Transcriptional Regulation of Dhurrin, a Dual‐Purpose Defense Metabolite in Sorghum bicolor

Plant Direct, Volume 10, Issue 8, August 2026.
ABSTRACT Dhurrin, a cyanogenic glucoside, plays an important role in Sorghum bicolor physiology and defense. The concentration of dhurrin in sorghum is influenced by both nitrogen status and stage of plant organ development. While nitrogen resupply activates the expression of genes for dhurrin biosynthesis, the molecular mechanisms underlying this ...
Alicia A. Quinn, Brian A. McKinley, Cecilia K. Blomstedt, John E. Mullet, Roslyn M. Gleadow   +4 more
wiley   +1 more source

CFHTLenS: co-evolution of galaxies and their dark matter haloes [PDF]

Monthly Notices of the Royal Astronomical Society, 2014
18 pages, MNRAS, in ...
Hudson, M., Gillis, B., Coupon, J., Hildebrandt, H., Erben, T., Heymans, C., Hoekstra, H., Kitching, T., Mellier, Y., Miller, L., Van Waerbeke, L., Bonnett, C., Fu, L., Kuijken, K.H., Rowe, B., Schrabback, T., Semboloni, E., Uitert, E., Velander, M.   +18 more
openaire   +4 more sources

Feedback shaped the galaxy morphological sequence in presence of mergers

The Open Journal of Astrophysics
Bulges and disks are major structural components that define galaxy morphology. The mass ratios of bulges and disks increase statistically with the galaxy mass, with the high-mass end occupied by elliptical galaxies. Although previous theoretical studies
Masafumi Noguchi
doaj   +1 more source

Photoresponsive MoS2‐Based Artificial Synaptic Transistor for Wavelength‐Dependent Physical Reservoir Computing

Small Structures, Volume 7, Issue 8, August 2026.
The illumination wavelength sets the relaxation timescale of persistent photoconductivity in a back‐gated MoS2 photonic synapse. Red, green, and blue light supply three distinct fading‐memory channels within a single device. Combining these spectral channels into one reservoir achieves best performance of a nonlinear time‐series prediction below that ...
Mingeun Park, Won Suk Oh, Geonho Lee, Seongwon Gim, Jae‐Pil So, Jaegoo Lee, Hyeonjun Baek, Hongseok Oh   +7 more
wiley   +1 more source

The Scaling Relations of Galaxy Clusters and Their Dark Matter Halos [PDF]

The Astrophysical Journal, 2004
18 pages, 3 figures, ApJ, accepted version.
LANZONI, BARBARA, CIOTTI, LUCA, CAPPI, ALBERTO, G. TORMEN, G. ZAMORANI   +4 more
openaire   +2 more sources

Distinct Adrenal Medulla Activity in Germ‐Free Versus Conventional Male Rats Under Acute and Chronic Stress

Journal of Neurochemistry, Volume 170, Issue 8, August 2026.
The study investigates the influence of gut microbiota on adrenal responses to stress in male rats, comparing germ‐free (GF) and specific pathogen‐free (SPF) models. The results show that stress caused a significant increase in epinephrine production in GF rats.
Camille Etienne, Claire Bernat, Magali Monnoye, Virginie Andry, Catherine Philippe, Claire Maudet, Elise Maximin, Laurent Naudon, Yannick Goumon, Christine Heberden, Nathalie C. Guérineau, Sylvie Rabot   +11 more
wiley   +1 more source

Structure-wide Dark Matter Density Depletion Induced by Local Degeneracies

The Astrophysical Journal
The longstanding cusp–core problem—the discrepancy between the steep central density cusps predicted by cold dark matter (DM) simulations and certain shallow cores observed in dwarf galaxies, in particular the associated diversity of inner profiles ...
Yifei Yang, Weikang Lin
doaj   +1 more source

Raman analysis of organic refractory materials after energetic processing: Evidence for amorphous carbon on TNOs and comets

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 1994-2015, August 2026.
Abstract Amorphous carbon (αC) is found in various extraterrestrial particles, including those thought to originate from the outer Solar System. αC can form through two main processes involving C‐rich materials: exposure to energetic charged particles and thermal processing.
M. Germanà, A. Vyjidak, G. A. Baratta, B. M. Giuliano, R. G. Urso, C. Scirè, D. Fulvio, T. Grassi, P. Jusko, P. Caselli, M. E. Palumbo   +10 more
wiley   +1 more source