Results 181 to 190 of about 1,877,533 (362)

A measurement of the equation of state of carbon envelopes of white dwarfs

Nature, 2020
A. Kritcher, D. Swift, T. Döppner, B. Bachmann, L. Benedict, Gilbert W. Collins, J. Dubois, F. Elsner, G. Fontaine, J. Gaffney, S. Hamel, A. Lazicki, W. Johnson, N. Kostinski, D. Kraus, M. MacDonald, B. Maddox, Madison E. Martin, P. Neumayer, A. Nikroo, J. Nilsen, B. Remington, D. Saumon, P. Sterne, W. Sweet, A. Correa, H. Whitley, R. Falcone, S. Glenzer   +28 more
semanticscholar   +1 more source

Static and rotating white dwarfs at finite temperatures [PDF]

arXiv, 2019
Static and uniformly rotating, cold and hot white dwarfs are investigated both in Newtonian gravity and general theory of relativity, employing the well-known Chandrasekhar equation of state. The mass-radius, mass-central density, radius-central density etc relations of stable white dwarfs with $\mu=A/Z=2$ and $\mu=56/26$ (where $A$ is the average ...
arxiv  

Green Synthesis of Nano‐Sized Metal Oxides (Ag2O, CuO, ZnO, MgO, CaO, and TiO2) Using Plant Extract for a Sustainable Environment

Nano Select, EarlyView.
Synthesis of metal oxide from different types of green plants for a sustainable environment. ABSTRACT The demand for green synthesis of metal oxide nanomaterials is increasing tremendously to achieve sustainable development goals and for a clean environment.
Sanjana Afrin Disha, Md. Sahadat Hossain, Md. Lawshan Habib, Samina Ahmed   +3 more
wiley   +1 more source

The Theory of Pressure Ionization and the Constitution of the White Dwarf Stars [PDF]

, 1939
F. C. Auluck, E. A. Milne
openalex   +1 more source

Constraining Effective Temperature, Mass and Radius of Hot White Dwarfs [PDF]

arXiv, 2017
By introducing a simplified transport model of outer layers of white dwarfs we derive an analytical semi-empirical relation which constrains effective temperature-mass-radius for white dwarfs. This relation is used to classify recent data of white dwarfs according to their time evolution in non-accretion process of cooling.
arxiv  

An Attempt to Detect the Magnetic Field of a White Dwarf [PDF]

, 1948

openalex   +1 more source

Evidence for very nearby hidden white dwarfs

, 2016
We report the discovery of a tertiary component to the prominent and nearby (d = 14 pc) visual binary alpha Fornacis. The new invisible component is part of a 4-d short-period Ba-Bb subsystem, whose K-type alpha For Ba primary shows a striking [Ba/Fe] = +
K. Fuhrmann, R. Chini, L. Kaderhandt, Zhaoyu Chen, R. Lachaume   +4 more
semanticscholar   +1 more source

Effects of boreal ground layer shrubs and bryophytes on the diversity, biomass and composition of lichen communities across contrasting ecosystems

Oikos, EarlyView.
There has been much recent interest in understanding how abiotic factors such as light, nutrients, and soil moisture affect the composition and biomass of lichen communities. Meanwhile, whether and how ground layer vegetation such as bryophytes and shrubs also influence lichen communities have received much less attention, particularly regarding how ...
Nicolas Fanin, Johan Asplund, Michael J. Gundale, Paul Kardol, Marie‐Charlotte Nilsson, David A. Wardle   +5 more
wiley   +1 more source

A New Red-White Dwarf Binary [PDF]

, 1954
W. J. Luyten
openalex   +1 more source

Rotation plays a role in the generation of magnetic fields in single white dwarfs [PDF]

arXiv
Recent surveys of close white dwarf binaries as well as single white dwarfs have provided evidence for the late appearance of magnetic fields in white dwarfs, and a possible generation mechanism a crystallization and rotation-driven dynamo has been suggested.
arxiv