Results 171 to 180 of about 1,989,293 (378)

KIC 4552982: outbursts and pulsations in the longest-ever pseudo-continuous light curve of a ZZ Ceti

EPJ Web of Conferences, 2015
KIC 4552982 was the first ZZ Ceti (hydrogen-atmosphere pulsating white dwarf) identified to lie in the Kepler field, resulting in the longest pseudo-continuous light curve ever obtained for this type of variable star.
Bell K. J., Hermes J. J., Bischoff-Kim A., Moorhead S., Castanheira B. G., Montgomery M. H., Winget D. E.   +6 more
doaj   +1 more source

Collisions in a gas-rich white dwarf planetary debris disc. [PDF]

Mon Not R Astron Soc, 2021
Swan A, Kenyon SJ, Farihi J, Dennihy E, Gänsicke BT, Hermes JJ, Melis C, von Hippel T.   +7 more
europepmc   +1 more source

Uncovering ESG Ratings: The (Im)Balance of Aspirational and Performance Features

Corporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT Environmental, Social, and Governance (ESG) scores are crucial for evaluating corporate sustainability. However, the undisclosed and complex methodologies used by rating agencies have raised concerns about their reliability and consistency. This study replicates LSEG's ESG scoring methodology using machine learning to shed light on the key ...
Andrea Ferro, Daniele Marazzina, Davide Stocco   +2 more
wiley   +1 more source

Following the Pulsations in the Long-term Cooling of GW Librae and V386 Serpentis

The Astronomical Journal
GW Lib and V386 Ser are dwarf novae systems containing pulsating white dwarfs that underwent large 8–9 mag amplitude outbursts in 2007 and 2019, respectively.
Paula Szkody, Jan van Roestel, Keaton J. Bell, Zachary P. Vanderbosch, Anjum Mukadam, Simone Scaringi   +5 more
doaj   +1 more source

The population of single and binary white dwarfs of the Galactic bulge

, 2018
Recent Hubble Space Telescope observations have unveiled the white dwarf cooling sequence of the Galactic bulge. Although the degenerate sequence can be well fitted employing the most up-to-date theoretical cooling sequences, observations show a ...
Calamida, A., Cojocaru, R., García-Berro, E., Torres, S.   +3 more
core   +1 more source

The age of white dwarf companions

Journal of Physics: Conference Series, 2009
4 pages, 2 figures, Proceedings to 16th European WD Workshop Meeting ...
S. Weston, Ralf Napiwotzki
openaire   +3 more sources

Machine Learning a Predictive Tool for the Analysis of NiCo2S4/Graphene Composites for Supercapacitor

ChemSusChem, EarlyView.
The present review explores the recent advancements of NiCo2S4/graphene nanocomposite as a promising active material for supercapacitors. Machine learning models are demonstrated to analyze the specific capacitance variation with respect to different synthesis parameters, morphology, energy density, and power density.
Heena S. Mulla, Digambar S. Sawant, Sandesh V. Gaikwad, Akash V. Fulari, Rajesh K. Nimat, Deepak P. Dubal, Gaurav M. Lohar   +6 more
wiley   +1 more source

How Sublimation Delays the Onset of Dusty Debris Disk Formation Around White Dwarf Stars. [PDF]

Astrophys J Lett, 2021
Steckloff JK, Debes J, Steele A, Johnson B, Adams ER, Jacobson SA, Springmann A.   +6 more
europepmc   +1 more source

Short Wavelength Limit of the Dynamic Matsubara Local Field Correction

Contributions to Plasma Physics, EarlyView.
ABSTRACT We investigate the short wavelength limit of the dynamic Matsubara local field correction G˜q,zl$$ \tilde{G}\left(\mathbf{q},{z}_l\right) $$ of the uniform electron gas based on direct ab initio path integral Monte Carlo (PIMC) results over an unprecedented range of wavenumbers, q≲20qF$$ q\lesssim 20{q}_{\mathrm{F}} $$, where qF$$ {q}_{\mathrm{
Tobias Dornheim, Panagiotis Tolias, Zhandos A. Moldabekov, Jan Vorberger   +3 more
wiley   +1 more source

A Dynamical Model for IRAS 00500+6713: The Remnant of a Type Iax Supernova SN 1181 Hosting a Double Degenerate Merger Product WD J005311

The Astrophysical Journal
IRAS 00500+6713 is a hypothesized remnant of a Type Iax supernova SN 1181. Multiwavelength observations have revealed its complicated morphology; a dusty infrared ring is sandwiched by the inner and outer X-ray nebulae. We analyze the archival X-ray data
Takatoshi Ko, Hiromasa Suzuki, Kazumi Kashiyama, Hiroyuki Uchida, Takaaki Tanaka, Daichi Tsuna, Kotaro Fujisawa, Aya Bamba, Toshikazu Shigeyama   +8 more
doaj   +1 more source