Results 41 to 50 of about 159,297 (260)

Increase of the Density, Temperature and Velocity of Plasma Jets driven by a Ring of High Energy Laser Beams

, 2013
Supersonic plasma outflows driven by multi-beam, high-energy lasers, such as Omega and NIF, have been and will be used as platforms for a variety of laboratory astrophysics experiments.
Anatoly Spitkovsky, Bruce Remington, Donald Q. Lamb, Edison P. Liang, Farley, Ferrari, Fryxell, Gregory, Hao, Hye-Sook Park, Kasperczuk, Kmetík, Michael Grosskopf, Milad Fatenejad, Nicolai, Nocolai, Park, Pech, Pisarczyk, Remington, Ross, Ryutov, Shigemori, Sizyuk, Tikhonchuk, Wen Fu   +25 more
core   +1 more source

ISO and Laboratory Astrophysics [PDF]

Symposium - International Astronomical Union, 1992
ISO, the Infrared Space Observatory is capable of measuring spectra across most of the mid-infrared, the region from 4000 to 500 cm−1 (2.5-20 μm). Of these 3500 cm−1, about 670 have been inaccessible to astronomers due to strong atmospheric absorptions and about 750 cm−1 require an airborne platform, making access limited. ISO will provide high quality
openaire   +1 more source

ChatCFD: A Large Language Model‐Driven Agent for End‐to‐End Computational Fluid Dynamics Automation with Structured Knowledge and Reasoning

Advanced Intelligent Discovery, EarlyView.
Chat computational fluid dynamics (CFD) introduces an large language model (LLM)‐driven agent that automates OpenFOAM simulations end‐to‐end, attaining 82.1% execution success and 68.12% physical fidelity across 315 benchmarks—far surpassing prior systems.
E Fan, Kang Hu, Zhuowen Wu, Jiangyang Ge, Jiawei Miao, Yuzhi Zhang, He Sun, Weizong Wang, Tianhan Zhang   +8 more
wiley   +1 more source

Cryogenic Differential Calorimetry: Exothermicity of Amorphous-to-crystalline Phase Transitions (ACPT) in Astrophysical and Cometary Ice Analogs

The Astrophysical Journal
Amorphous ice is understood to be the predominant phase of water in cometary nuclei. A significant number of other volatiles can be trapped in amorphous H _2 O ice and released during the amorphous-to-crystalline phase transition (ACPT).
Rahul K. Kushwaha, Murthy S. Gudipati, Bryana L. Henderson   +2 more
doaj   +1 more source

Nuclear astrophysics in the laboratory and in the universe

AIP Advances, 2014
Nuclear processes drive stellar evolution and so nuclear physics, stellar models and observations together allow us to describe the inner workings of stars and their life stories.
A. E. Champagne, C. Iliadis, R. Longland
doaj   +1 more source

Presupernova Structure of Massive Stars

, 2010
Issues concerning the structure and evolution of core collapse progenitor stars are discussed with an emphasis on interior evolution. We describe a program designed to investigate the transport and mixing processes associated with stellar turbulence ...
A. Claret, A. Claret, A. Heger, A. Heger, A. Heger, A. Maeder, A. Mazumdar, A. Nordlund, A. Pietrinferni, A.J.T. Poelarends, A.M. Serenelli, A.S. Endal, C. Aerts, C.A. Meakin, C.A. Meakin, C.A. Meakin, C.A. Meakin, Casey A. Meakin, D. Arnett, D. Arnett, E. Caffau, E.I. Staritsin, F. Herwig, F.J. Robinson, G. Bazán, G. Bertelli, G. Schaller, G. Torres, H.C. Spruit, H.C. Spruit, H.J.S. Fernando, I. Ribas, J. Montalbán, J.A. Guzik, J.C. Suárez, L. Girardi, L. Siess, L.H. Kantha, L.H. Li, M. Briquet, M. Desmet, M. Marconi, M. Mocák, M. Mocák, M. Soriano, M. Steffen, M.-A. Dupret, M.H. Pinsonneault, M.K. Browning, M.M. Hohle, M.P. Mauro Di, N. Langer, P.G. Drazin, P.P. Eggleton, R. Kippenhahn, R. Kuhfuss, R.F. Stein, R.F. Stein, R.G. Deupree, R.L. Gilliland, S. Chandrasekhar, S. Vauclair, S.E. Woosley, S.E. Woosley, S.W. Bruenn, T.M. Rogers, Tuguldur Sukhbold, V.M. Canuto, W. David Arnett, W. Unno, W.D. Arnett, W.J. Merryfield   +71 more
core   +1 more source

Quantifying the Impact of Relativistic Precession on Tidal Disruption Event Light Curves

Astronomische Nachrichten, EarlyView.
ABSTRACT The tidal field of a black hole can turn a star into a gas stream whose orbit can precess, especially if the a black hole is rapidly spinning. In this work, we investigate the impact of precession on the light curves of tidal disruption events (TDE).
Diego Calderón, Ondřej Pejcha, Brian D. Metzger, Paul C. Duffell, Stephan Rosswog   +4 more
wiley   +1 more source

Ultra-sensitive in-beam gamma-ray spectroscopy for nuclear astrophysics at LUNA

, 2008
Ultra-sensitive in-beam gamma-ray spectroscopy studies for nuclear astrophysics are performed at the LUNA (Laboratory for Underground Nuclear Astrophysics) 400 kV accelerator, deep underground in Italy's Gran Sasso laboratory.
A. CACIOLLI, A. FORMICOLA, A. GUGLIELMETTI, A. LEMUT, AND H.P. TRAUTVETTER, B. LIMATA, C. BROGGINI, C. GUSTAVINO, C. ROLFS, C. ROSSI ALVAREZ, D. BEMMERER, E. SOMORJAI, F. CONFORTOLA, F. STRIEDER, F. TERRASI, G. GERVINO, G. IMBRIANI, GY. GYURKY, H. COSTANTINI, L. AGOSTINO, M. JUNKER, M. LAUBENSTEIN, M. MARTA, O. STRANIERO, P. BEZZON, P. CORVISIERO, P. PRATI, R. BONETTI, R. MENEGAZZO, V. LOZZA, V. ROCA, Z. ELEKES, ZS. FULOP   +32 more
core   +1 more source

Charge State Influence on Stability and Isomerism in Dehydrogenated PAHs: Insights from Anthracene, Acridine, and Phenazine

ChemPhysChem, Volume 26, Issue 6, March 15, 2025.
The ionization of anthracene, acridine, and phenazine has been explored, along with the removal of one and two hydrogen atoms, to provide valuable information for astrochemists and to understand the behavior of the resulting structures and their electronic reorganization. Abstract In this study, we systematically explored the stability and isomerism of
Khaldia Zghida, Farouk Hamza Reguig, Manuel Alcamí, Al Mokhtar Lamsabhi   +3 more
wiley   +1 more source

Magnetization of laser-produced plasma in a chiral hollow target

New Journal of Physics, 2017
It is demonstrated that targets with a broken rotational symmetry may facilitate the generation of a strong axial (poloidal) magnetic field. An intense laser beam irradiating such a target creates strong electron currents carrying vorticity and producing
Ph Korneev, V Tikhonchuk, E d’Humières   +2 more
doaj   +1 more source