Results 71 to 80 of about 99,264 (157)

Supernova Neutrino Oscillations

, 2005
Observing a high-statistics neutrino signal from a galactic supernova (SN) would allow one to test the standard delayed explosion scenario and may allow one to distinguish between the normal and inverted neutrino mass ordering due to the effects of ...
Anderson K, Araki T [KamLAND Collaboration], Dighe A S, Dighe A S, Dighe A S, Fogli G L, Georg G Raffelt, Gil-Botella I, Gil-Botella I, Kachelriess M, Lunardini C, Maltoni M, Mikheev S P, Mikheev S P, Raffelt G G, Raffelt G G, Schirato R C, Tomàs R, Wilson J R   +18 more
core   +1 more source

Development of Photo‐Biocatalytic Redox System for Asymmetric Synthesis of Optically Active Amines Using Blue Light and Transaminases. A Case Study Toward Mavacamten

Advanced Synthesis &Catalysis, Volume 367, Issue 12, June 26, 2025.
Abstract α‐Chiral amines are versatile building blocks for the asymmetric synthesis of optically pure high‐added‐value chemicals, including pharmaceuticals, agrochemicals, and natural products. Herein, we report a one‐pot, two‐step sequential deracemization of racemic sec‐alcohols to optically enriched primary amines throught a photo‐biocatalytic ...
Natalia Antos, Aleksandra Rudzka, Anna Hoser, Tamara Reiter, Wolfgang Kroutil, Paweł Borowiecki   +5 more
wiley   +1 more source

Reconstructing the cosmic evolution of the chemical elements

, 2014
The chemical elements are created in nuclear fusion processes in the hot and dense cores of stars. The energy generated through nucleosynthesis allows stars to shine for billions of years.
Frebel, Anna
core   +1 more source

A Slowly Pulsating Run‐Away B Star at High Galactic Latitude Ejected From a Spiral Arm

Astronomische Nachrichten, Volume 346, Issue 5, June 2025.
ABSTRACT We report the discovery of the young B6 V run‐away star LAMOST J083323.18 + 430825.4, 2.5 kpc above the Galactic plane. Its atmospheric parameters and chemical composition are determined from LAMOST spectra, indicating normal composition. Effective temperature (Teff$$ {T}_{\mathrm{eff}} $$ = 14,500$$ \mathrm{14,500} $$ K) and gravity (logg ...
Ulrich Heber, Maximilian Halenke, Aakash Bhat, Veronika Schaffenroth   +3 more
wiley   +1 more source

Turbulence Heating ObserveR – satellite mission proposal

Journal of Plasma Physics, 2016
The Universe is permeated by hot, turbulent, magnetized plasmas. Turbulent plasma is a major constituent of active galactic nuclei, supernova remnants, the intergalactic and interstellar medium, the solar corona, the solar wind and the Earth’s ...
A. Vaivads, A. Retinò, J. Souček, Y. Khotyaintsev, F. Valentini, C. Escoubet, O. Alexandrova, M. André, S. Bale, M. Balikhin, D. Burgess, E. Camporeale, D. Caprioli, C. Chen, E. Clacey, C. Cully, J. D. Keyser, J. Eastwood, A. Fazakerley, S. Eriksson, M. Goldstein, D. Graham, S. Haaland, M. Hoshino, Hantao Ji, H. Karimabadi, H. Kucharek, B. Lavraud, F. Marcucci, W. Matthaeus, T. Moore, R. Nakamura, Y. Narita, Z. Němeček, C. Norgren, H. Opgenoorth, M. Palmroth, D. Perrone, J. Pinçon, P. Rathsman, H. Rothkaehl, F. Sahraoui, S. Servidio, L. Sorriso-Valvo, R. Vainio, Z. Vörös, R. Wimmer–Schweingruber   +46 more
semanticscholar   +1 more source

Why Schonland Failed in His Search for Runaway Electrons From Thunderstorms

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 10, 28 May 2025.
Abstract B.F.J. Schonland, advised and encouraged by C.T.R. Wilson, made two unsuccessful searches for runaway electrons from thunderstorms in the 1930s. These findings stand in marked contrast with research results over the last decade and ironically set this field of research back many decades.
A. Chilingarian, E. Williams, G. Hovsepyan, H. Mkrtchyan   +3 more
wiley   +1 more source

The consequences of a nearby supernova on the early Solar System [PDF]

, 2018
If the Sun was born in a relatively compact open cluster, it is quite likely that a massive (10MSun) star was nearby when it exploded in a supernova. The repercussions of a supernova can be rather profound, and the current Solar System may still bear the
Lugaro, Maria, Pelupessy, Inti, van Elteren, Arjen, Wijnen, Thomas, Zwart, Simon Portegies   +4 more
core   +4 more sources

Photoinduced Hydrogen Evolution Catalyzed by Co(II) Complexes of N5‐Donor Ligands

Chemistry – A European Journal, Volume 31, Issue 28, May 19, 2025.
Cobalt(II) complexes of three related pentadentate ligands have been investigated as photoelectrochemical catalysts for proton reduction/hydrogen gas evolution in the presence of ruthenium, iridium, or copper‐based photosensitizers. Potential mechanisms for hydrogen evolution have been investigated by time‐resolved transient absorption spectroscopy and
Chuanshuai Li, Yong Li, Yusen Luo, Klaudia Michaliszyn, Iria Bolaño Losada, Md. Kamal Hossain, Fatma Elantabli, Meiyuan Guo, Lintang Hizbullah, Derek A. Tocher, Matti Haukka, Petter Persson, Julio Lloret‐Fillol, Benjamin Dietzek‐Ivanšić, Ebbe Nordlander   +14 more
wiley   +1 more source

Interstellar Al-26 and excess Mg-26 [PDF]

Evidence of a possible supernova explosion that occured very near the Earth is presented by the presence of radioactive 26 Aluminum (26 Al). The time of the supernova explosion is placed at approximately 100,000 years ago and is partially supported by ...
Clayton, D. D.
core   +1 more source

The Diffuse Supernova Neutrino Background

, 2010
The Diffuse Supernova Neutrino Background (DSNB) is the weak glow of MeV neutrinos and antineutrinos from distant core-collapse supernovae. The DSNB has not been detected yet, but the Super-Kamiokande (SK) 2003 upper limit on the electron antineutrino ...
Beacom, John F.
core   +1 more source