Results 211 to 220 of about 1,989,293 (378)

White dwarf variability

There are a few different mechanisms that can cause white dwarf stars to vary in brightness, providing opportunities to probe the physics, structures, and formation of these compact stellar remnants. The observational characteristics of the three most common types of white dwarf variability are summarized: stellar pulsations, rotation, and ellipsoidal ...
openaire   +2 more sources

Age is not a primary risk factor for ACL injury—A comprehensive review of ACL injury and reinjury risk factors confounded by young patient age

Knee Surgery, Sports Traumatology, Arthroscopy, EarlyView.
Abstract Revision surgery after anterior cruciate ligament reconstruction (ACL‐R) is hypothesized to be the result of an interplay between factors associated with the anatomy, physiological characteristics and environment of the patient. The multifactorial nature of revision ACL‐R risk is difficult to quantify, and evidence regarding the independent ...
Bálint Zsidai, Ramana Piussi, Philipp W. Winkler, Armin Runer, Pedro Diniz, Riccardo Cristiani, Eric Hamrin Senorski, Volker Musahl, Michael T. Hirschmann, Romain Seil, Kristian Samuelsson   +10 more
wiley   +1 more source

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 Decline and Fall of ROME. V. A Preliminary Search for Star-disrupted Planet Interactions and Coronal Activity at 5 GHz among White Dwarfs within 25 pc

The Astrophysical Journal
The recent discovery of planetesimals orbiting white dwarfs has renewed interest in the final chapters of the evolution of planetary systems. Although observational and theoretical studies have examined the dynamical evolution of these systems, studies ...
Matthew Route
doaj   +1 more source

Theta Hya: Spectroscopic identification of a second B star + white dwarf binary

, 1998
We report the identification, in an Extreme Ultraviolet Explorer (EUVE) spectrum, of a hot white dwarf companion to the 3rd magnitude late-B star Theta Hya (HR3665, HD79469).
Barstow, M. A., Burleigh, M. R.
core  

Studies of the White Dwarfs. III. The Recurrent Nova WZ SGE as a Probable White Dwarf.

, 1957
Jesse L. Greenstein
openalex   +1 more source

Implications of White-Dwarf Crystallization for the Chemical Composition of the Planetary Nuclei [PDF]

, 1968
H. M. van Horn
openalex   +1 more source

Boswellia oropedionis (Burseraceae) sp. nov., a frankincense tree from Socotra, and notes on B. ameero and B. bullata

Nordic Journal of Botany, EarlyView.
The new species Boswellia oropedionis Thulin and M.H.Weber is described, illustrated by photographs and mapped. This tree is only known from a small population growing on level limestone on the Qatariyah plateau in southern Socotra and is the twelfth endemic species of Boswellia from the Socotra archipelago. It differs from B.
Mats Thulin, Michael H. Weber, Sami Ali Mohammed Mubarak   +2 more
wiley   +1 more source

How to rule out (g − 2) μ in U 1 L μ − L τ $$ \textrm{U}{(1)}_{L_{\mu }-{L}_{\tau }} $$ with white dwarf cooling

Journal of High Energy Physics
In recent years, the gauge group U 1 L μ − L τ $$ \textrm{U}{(1)}_{L_{\mu }-{L}_{\tau }} $$ has received a lot of attention since it can, in principle, account for the observed excess in the anomalous muon magnetic moment (g − 2) μ , as well as the ...
Patrick Foldenauer, Jaime Hoefken Zink
doaj   +1 more source

Evolution towards the White-Dwarf Stage [PDF]

, 1968
S. C. Vila
openalex   +1 more source