Results 91 to 100 of about 2,016,206 (398)

The Highly Accurate Relation Between the Radius and Mass of the White Dwarf Star From Zero to Finite Temperature

open access: yesFrontiers in Astronomy and Space Sciences, 2022
In this research, first considering the electron–electron interaction in the high-density Fermi electron gas at T = 0 K, this interaction causes the pressure 2/137 time less than the original value.
Ting-Hang Pei
doaj   +1 more source

White Dwarfs and Dark Matter [PDF]

open access: yesScience, 2001
Accepted for publication as a Technical Comment in Science, in response to Oppenheimer et al. (2001, Science, 292, 698)
Gibson, B. K., Flynn, Chris
openaire   +5 more sources

Nonlinear Optical Microscopy of Semiconductor–Metal Nanocavities

open access: yesAdvanced Photonics Research, EarlyView.
Three‐dimensional nonlinear optical microscopy is used to visualize GaAs–gold hybrid nanocavities. By carefully selecting the pump wavelength to position the harmonic generation at the nanopillar resonance, an enhanced contrast is observed in the nonlinear imaging.
Riya Varghese   +15 more
wiley   +1 more source

Features of the mass transfer in magnetic cataclysmic variables with fast-rotating white dwarfs

open access: yesEPJ Web of Conferences, 2014
The flow structure in magnetic cataclysmic variables was investigated taking into account the effects of strong magnetic field and fast rotation of the white dwarf. We modeled the AE Aqr system as a unique object that has the rotation period of the white
Isakova Polina   +2 more
doaj   +1 more source

Eclipsing binary and white dwarf features associated with K2 target EPIC251248385 [PDF]

open access: yes, 2019
White dwarfs, remnants of Sun-like stars which have completed their evolution, are one of the most common types of stars in space. Despite this, very few white dwarfs have been observed in transiting or eclipsing systems, and only two planetary systems ...
Armstrong, James D.   +5 more
core   +1 more source

Transformation of a Silicate Material for Carbon Negative Magnesia‐Based Cement via Electrochemistry

open access: yesAdvanced Science, EarlyView.
The transformation of a magnesium trisilicate material via water electrolysis into precursor phases necessary for magnesium‐based M‐S‐H cement is explored. The dissolution of the material mediated electrochemically is monitored, and the analysis of the resulting phases indicate their suitability as effective precursors for M‐S‐H cement.
Anthony R. Ramuglia   +11 more
wiley   +1 more source

Gaseous Material Orbiting the Polluted, Dusty White Dwarf HE1349-2305 [PDF]

open access: yes, 2012
We present new spectroscopic observations of the polluted, dusty, helium-dominated atmosphere white dwarf star HE1349-2305. Optical spectroscopy reveals weak CaII infrared triplet emission indicating that metallic gas debris orbits and is accreted by the
Bessel   +26 more
core   +2 more sources

RING‐Between‐RING‐Type E3 Ligase Ariadne‐Like Protein 8 Negatively Regulates Plant Virus Infection by Targeting a Viral Movement Protein

open access: yesAdvanced Science, EarlyView.
The plant RING‐between‐RING (RBR)‐type E3 ligase, Ariadne‐like protein 8 (ARI8), ubiquitinates and degrades a viral movement protein, restricting virus spread. ARI8 also inhibits other triple gene block 1 (TGB1)‐containing viruses, revealing a broad‐spectrum antiviral role.
Wenli Li   +12 more
wiley   +1 more source

Studying the Radiation of a White Dwarf Star Falling onto a Black Hole

open access: yesThe Astrophysical Journal
We investigate electromagnetic and gravitational radiation generated during the process of the tidal stripping of a white dwarf star circulating a black hole.
Marek Nikołajuk   +3 more
doaj   +1 more source

Testing White Dwarf Age Estimates Using Wide Double White Dwarf Binaries from Gaia EDR3

open access: yesThe Astrophysical Journal, 2022
White dwarf (WD) stars evolve simply and predictably, making them reliable age indicators. However, self-consistent validation of the methods for determining WD total ages has yet to be widely performed.
Tyler M. Heintz   +6 more
doaj   +1 more source

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