Results 91 to 100 of about 69,486 (315)

X‐ray imaging methods for multiscale characterization of batteries

open access: yesBulletin of the Korean Chemical Society, EarlyView.
X‐ray imaging is revolutionizing battery research by offering multiscale insights into structure, composition, and chemistry, from micrometers to nanometers. Operando imaging captures real‐time changes during cycling, revealing dynamic processes and localized effects inaccessible through traditional methods.
Sebastian Kunze   +7 more
wiley   +1 more source

Maximum mass ratio of am CVn-type binary systems and maximum white dwarf mass in ultra-compact x-ray binaries (addendum - Serb. Astron. J. No. 183 (2011), 63) [PDF]

open access: yesSerbian Astronomical Journal, 2012
We recalculated the maximum white dwarf mass in ultra-compact X-ray binaries obtained in an earlier paper (Arbutina 2011), by taking the effects of super-Eddington accretion rate on the stability of mass transfer into account.
Arbutina B.
doaj   +1 more source

Comparison of White Dwarf Mass Determinations [PDF]

open access: yesarXiv, 2005
White dwarf masses can be determined in several ways. Here we compare masses obtained from Balmer line spectroscopy with those derived from trigonometric parallax measurements for an ensemble of cool hydrogen-atmosphere white dwarfs.
arxiv  

White dwarf cooling sequences and cosmochronology [PDF]

open access: yes, 2012
The evolution of white dwarfs is a simple gravothermal process. This means that their luminosity function, i.e. the number of white dwarfs per unit bolometric magnitude and unit volume as a function of bolometric magnitude, is a monotonically increasing function that decreases abruptly as a consequence of the finite age of the Galaxy. The precision and
arxiv   +1 more source

Magnetars and white dwarf pulsars [PDF]

open access: yesInternational Journal of Modern Physics D, 2016
The anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs) are a class of pulsars understood as neutron stars (NSs) with super strong surface magnetic fields, namely [Formula: see text][Formula: see text]G, and for that reason are known as magnetars.
Manuel Malheiro   +2 more
openaire   +3 more sources

Evaluation of growth and yield of new papaya (Carica papaya L.) hybrid lines and their performance against Moroccan watermelon mosaic virus‐causing disease

open access: yesBiological Diversity, EarlyView.
Abstract The production of Carica papaya L. in Kenya is seriously affected by the Moroccan watermelon mosaic virus and lack of improved varieties leading to the importation of expensive seeds for the resource‐scarce farmers. To curb these challenges, new papaya hybrid lines were recently selected and bred, but their growth traits and performance ...
Janet Chepng’etich Kosgei   +4 more
wiley   +1 more source

Cones structure and seed traits of four species of large‐seeded pines: Adaptation to animal‐mediated dispersal

open access: yesEcology and Evolution, 2020
Seed dispersal selection pressures may cause morphological differences in cone structure and seed traits of large‐seeded pine trees. We investigated the cone, seed, and scale traits of four species of animal‐dispersed pine trees to explore the ...
Man‐Yu Zhang   +2 more
doaj   +1 more source

Hydrogen Line Shapes in Plasmas with Large Magnetic Fields

open access: yesAtoms, 2020
We report on hydrogen line shape calculations in the presence of an external magnetic field, at conditions such that the quadratic Zeeman effect is important.
Joël Rosato
doaj   +1 more source

WHITE DWARFS

open access: yesLe Journal de Physique Colloques, 1980
The thermal properties and neutrino emissivity of matter in the dense, degenerate cores of white dwarfs, together with efficient heat transport through the high-density envelopes of these stars, affect the theoretical white dwarf luminosity function.
openaire   +1 more source

SPIN AND MAGNETISM OF WHITE DWARFS [PDF]

open access: yesThe Astrophysical Journal, 2015
The magnetism and rotation of white dwarf (WD) stars are investigated in relation to a hydromagnetic dynamo operating in the progenitor during shell burning phases. The downward pumping of angular momentum in the convective envelope, in combination with the absorption of a planet or tidal spin-up from a binary companion, can trigger strong dynamo ...
Yevgeni Kissin, Christopher Thompson
openaire   +3 more sources

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