Results 71 to 80 of about 321 (187)

The Orientation of Accretion Disks Relative to Dust Disks in Radio Galaxies

open access: yes, 2002
2 pages, 1 figure. To appear in "Active Galactic Nuclei, from Central Engine to Host Galaxy", eds Collin, Combes & Shlosman.
openaire   +2 more sources

Cortinarius swatensis sp. nov. (Basidiomycota; Agaricales) in C. subg. Infracti from Pakistan, based on morphology, microscopy and phylogeny

open access: yesNordic Journal of Botany, Volume 2025, Issue 12, December 2025.
Cortinarius swatensis sp. nov. was collected from the District Swat, Khyber Pakhtunkhwa Province, Pakistan. This new species is characterized by its brown to purplish grey fibrillose pileus which does not change color on bruising, a robust, fibrillose stipe with inconspicuous cortina remnants and relatively small (4.5–5.2 × 3.4–4.3 µm), sub‐globose to ...
Hira Ijaz   +4 more
wiley   +1 more source

Solar Flare Activity, 1937–2024: Introducing the New Hemispheric Solar Flare Index (hSFI) in the Context of 2024's Major Solar Storm Events

open access: yesSpace Weather, Volume 23, Issue 11, November 2025.
Abstract A new daily composite of the solar flare index (SFI) and the hemispherically‐resolved versions (hSFI) are presented for 1937 to 2024. The data set confirms that the northern hemisphere (NH) dominated solar flare activity during Solar Cycles 17 to 21, but that the southern hemisphere has dominated from Solar Cycle 22 to present.
V. M. Velasco Herrera   +14 more
wiley   +1 more source

From Fabrication to Failure—Aqueous Processing, Electrolyte Tuning, and Degradation Mechanism Elucidation in Poly(3‐Vinyl‐N‐Methylphenoxazine) Positive Electrodes

open access: yesChemSusChem, Volume 18, Issue 19, October 1, 2025.
Organic electrode materials are considered the next generation of battery electrode materials due to their environmental friendliness, low toxicity and competitive specific capacities. Herein, we report on a systematic study of processing of the redox polymer poly(3‐vinyl‐N‐methylphenoxazine) (PVMPO) using water processable binders, achieving ...
Sathiya Priya Panjalingam   +5 more
wiley   +1 more source

Magnetic Flux Transport in Advection-dominated Accretion Flow toward the Formation of a Magnetically Arrested Disk

open access: yesThe Astrophysical Journal
Magnetically arrested disks (MADs) have attracted much attention in recent years. The formation of MADs is usually attributed to the accumulation of a sufficient amount of dynamically significant poloidal magnetic flux.
Jia-Wen Li, Xinwu Cao
doaj   +1 more source

Vision at high latitudes: High sensitivity without specific boreal adaptations in photoreception in reindeer (Rangifer tarandus L.)

open access: yesFunctional Ecology, Volume 39, Issue 10, Page 2573-2587, October 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The light climate at high latitudes, in particular the extended twilight of winter and the reduced diel variation in light level in midsummer and midwinter, potentially constrains visual function and the synchronisation of temporal organisation in polar species. In this
Nicholas J. C. Tyler   +3 more
wiley   +1 more source

Insights from Analytical Theory of Eccentric Circumbinary Disks

open access: yesThe Astrophysical Journal
Eccentric cavities in circumbinary disks precess on timescales much longer than the binary orbital period. These long-lived steady states can be understood as trapped modes in an effective potential primarily determined by the binary quadrupole and the ...
Marcela Grcić   +2 more
doaj   +1 more source

Shock Waves in the Magnetic Reconnection in the Flares on the Accretion Disk of the Sgr A*

open access: yesThe Astrophysical Journal
Sgr A* often shows bright, episodic flares observationally, but the mechanism of the flares' intermittent brightening is not very clear. Many people believe the flares may be formed by the nonthermal particles, which can be a consequence of the magnetic ...
Tian-Le Zhao   +3 more
doaj   +1 more source

Disk Assembly of the Milky Way Suggested from the Time-resolved Chemical Abundance

open access: yesThe Astrophysical Journal
Both simulations and observations suggest that the disk assembly of galaxies is governed by the interplay between coplanar gas inflow, ex-planar gas outflow, and in situ star formation on the disk, known as the leaky accretion disk.
Enci Wang   +3 more
doaj   +1 more source

Accretion onto disc galaxies via hot and rotating CGM inflows

open access: yesMonthly Notices of the Royal Astronomical Society
ABSTRACT Observed accretion rates onto the Milky Way and other local spirals fall short of that required to sustain star formation for cosmological timescales. A potential avenue for this unseen accretion is a rotating inflow in the volume-filling hot phase ($\sim 10^6\, {\rm K}$) of the circumgalactic medium (CGM), as suggested by some ...
Jonathan Stern   +7 more
openaire   +2 more sources

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