Results 211 to 220 of about 12,083,844 (366)

The Curious Concept That Almost Nobody Seemed to Care About at First: Virtual Particles in the Post‐War Period**

Berichte zur Wissenschaftsgeschichte, EarlyView.
Abstract Short‐lived, unobservable, and not subject to the usual rules of conservation of energy and momentum, virtual particles—an integral part of the conceptual framework of quantum field theory (QFT)—exhibit a number of curious characteristics which, in recent decades, have in part fueled important discussions about their ontological status ...
Jean‐Philippe Martinez
wiley   +1 more source

White Dwarf Merger Remnants: The DAQ Subclass

The Astrophysical Journal
Four years after the discovery of a unique DAQ white dwarf with a hydrogen-dominated and carbon-rich atmosphere, we report the discovery of four new DAQ white dwarfs, including two that were not recognized properly in the literature.
Mukremin Kilic, Pierre Bergeron, Simon Blouin, Gracyn Jewett, Warren R. Brown, Adam Moss   +5 more
doaj   +1 more source

A binary pulsar in a 53-minute orbit. [PDF]

Nature, 2023
Pan Z, Lu JG, Jiang P, Han JL, Chen HL, Han ZW, Liu K, Qian L, Xu RX, Zhang B, Luo JT, Yan Z, Yang ZL, Zhou DJ, Wang PF, Wang C, Li MH, Zhu M.   +17 more
europepmc   +1 more source

To Tell or Not to Tell? On the Under Communicating of Sustainability in Digital Environments

Business Strategy and the Environment, EarlyView.
ABSTRACT The paper investigates sustainability communication using digital tools—such as social media, websites, emails, and newsletters—and delves into the drivers that determine the undercommunication of sustainability (i.e., the green blushing phenomenon) in digital environments.
Simone Guercini, Giulia Monteverde, Andrea Runfola, Matilde Milanesi   +3 more
wiley   +1 more source

JWST 1.5 μm and 4.8 μm Photometry of Y Dwarfs

The Astronomical Journal
Brown dwarfs lack nuclear fusion and cool with time; the coldest known have an effective temperature below 500 K, and are known as Y dwarfs. We present a James Webb Space Telescope (JWST) photometric data set of Y dwarfs: 23 were imaged in wide-field ...
Loïc Albert, Sandy K. Leggett, Per Calissendorff, Thomas Vandal, J. Davy Kirkpatrick, Daniella C. Bardalez Gagliuffi, Matthew De Furio, Michael Meyer, Charles A. Beichman, Adam J. Burgasser, Michael C. Cushing, Jacqueline Kelly Faherty, Clémence Fontanive, Christopher R. Gelino, John E. Gizis, Alexandra Z. Greenbaum, Frantz Martinache, Mamadou N’Diaye, Benjamin J. S. Pope, Thomas L. Roellig, Johannes Sahlmann, Anand Sivaramakrishnan, Marie Ygouf   +22 more
doaj   +1 more source

Basic concepts of mixture toxicity and relevance for risk evaluation and regulation. [PDF]

Arch Toxicol, 2023
Bloch D, Diel P, Epe B, Hellwig M, Lampen A, Mally A, Marko D, Villar Fernández MA, Guth S, Roth A, Marchan R, Ghallab A, Cadenas C, Nell P, Vartak N, van Thriel C, Luch A, Schmeisser S, Herzler M, Landsiedel R, Leist M, Marx-Stoelting P, Tralau T, Hengstler JG.   +23 more
europepmc   +1 more source

The Spectra and Classification of L and T Dwarfs

, 2001
Adam J. Burgasser
openalex   +2 more sources

Binarity in Brown Dwarfs: T Dwarf Binaries Discovered with theHubble Space TelescopeWide Field Planetary Camera 2 [PDF]

, 2003
Adam J. Burgasser, J. Davy Kirkpatrick, I. Neill Reid, Michael E. Brown, Cherie L. Miskey, John E. Gizis   +5 more
openalex   +1 more source

Opacities for Carbon Dwarfs and M Dwarfs [PDF]

Symposium - International Astronomical Union, 2000
Borysow, A., Jørgensen, U.G.
openaire   +2 more sources

Biodiversity Credits: An Overview of the Current State, Future Opportunities, and Potential Pitfalls

Business Strategy and the Environment, EarlyView.
ABSTRACT Biodiversity credits are an emerging vehicle for pro‐environmental financing, yet much uncertainty remains around how and when they could boost biodiversity conservation. Here we define what biodiversity credits are and explore impact pathways through a proposed theory of change. Based on evidence from 34 pilot projects and a review of lessons
Sven Wunder, Cecilia Fraccaroli, Joseph W. Bull, Trishna Dutta, Alison Eyres, Megan C. Evans, Bo Jellesmark Thorsen, Julia P. G. Jones, Martine Maron, Bart Muys, Andrea Pacheco, Asger Strange Olesen, Thomas Swinfield, Yitagesu Tekle Tegegne, Thomas B. White, Han Zhang, Sophus O. S. E. zu Ermgassen   +16 more
wiley   +1 more source