Results 71 to 80 of about 830 (187)

Optical Evidence of Compositional Fractioning between Plasma‐Condensed and Melt Pool Matter

Advanced Engineering Materials, Volume 26, Issue 13, July 2024.
This work presents an initial look at correlating the optical emissions of the weld plasma to that of the composition of particles condesned from the plasma plume. Particles removed from the melt pool through the plasma plume have atomic percent level differences in composition of alloy elements when compared to the originating metal.
Lance Hubbard, Floyd Hilty, Ankit Roy, Sarah Miley, Nicole Overman, Scott Muller, Kevin R. Fiedler, Diana Horangic, Matt Olszta   +8 more
wiley   +1 more source

Toward Reconciling Reionization with JWST: The Role of Bright Galaxies and Strong Feedback

The Astrophysical Journal
The elevated UV luminosity functions (UVLFs) from recent James Webb Space Telescope (JWST) observations have challenged the viability of existing theoretical models.
Ankita Bera, Sultan Hassan, Robert Feldmann, Romeel Davé, Kristian Finlator   +4 more
doaj   +1 more source

Before its time: A remarkably evolved protocluster core at z = 7.88

Astronomy & Astrophysics
Protoclusters represent the most extreme environments in the very early Universe. They form from large-scale dark matter overdensities, harbouring an overabundance of galaxies fed by large gas reservoirs.
Witten Callum, Oesch Pascal A., McClymont William, Meyer Romain A., Fudamoto Yoshinobu, Sijacki Debora, Laporte Nicolas, Bennett Jake S., Simmonds Charlotte, Giovinazzo Emma, Danhaive A. Lola, Ciesla Laure, Carvajal-Bohorquez Cristian, Trebitsch Maxime   +13 more
doaj   +1 more source

Updating and profiling the natural product‐likeness of Latin American compound libraries**

Molecular Informatics, Volume 43, Issue 7, July 2024.
We discuss a comparative and extensive profiling of the natural product‐likeness of an updated version of LANaPDB and the individual ten compound databases that form part of LANaPDB. The profiling is conducted with three different chemoinformatics metrics.
Alejandro Gómez‐García, Ann‐Kathrin Prinz, Daniel A. Acuña Jiménez, William J. Zamora, Haruna L. Barazorda‐Ccahuana, Miguel Á. Chávez‐Fumagalli, Marilia Valli, Adriano D. Andricopulo, Vanderlan da S. Bolzani, Dionisio A. Olmedo, Pablo N. Solís, Marvin J. Núñez, Johny R. Rodríguez Pérez, Hoover A. Valencia Sánchez, Héctor F. Cortés Hernández, Oscar M. Mosquera Martinez, Oliver Koch, José L. Medina‐Franco   +17 more
wiley   +1 more source

Measuring the intergalactic medium correlation length at 5 < z < 6.1: A fast change at the end of reionization

Astronomy & Astrophysics
Context. The Lyman-α forest of high-redshift quasars is a powerful probe of the late stages of the epoch of reionization (EoR), in particular thanks to the presence of Gunn-Peterson troughs.
Spina Benedetta, Bosman Sarah E. I., Maity Barun, Davies Frederick B.   +3 more
doaj   +1 more source

Reionization on ice

, 2006
The case for substantial far infrared ice emission in local ultraluminous infrared galaxies, expected based on the presence of mid-infrared ice absorption in their spectra and the known far infrared optical properties of ice, is still largely unsupported by direct observation owing to insufficient far infrared spectral coverage.
Dudley, C. C., Imanishi, M., Maloney, P. R.   +2 more
openaire   +2 more sources

Establishing a relationship between the cosmological 21 cm power spectrum and interferometric closure phases

Astronomy & Astrophysics
Context. Measurements of the cosmic 21 cm background need to achieve a high dynamic range to isolate it from bright foreground emissions. Instrumental calibration inaccuracies can compromise the spectral fidelity of the smooth foreground continuum ...
Keller P. M., Nikolic B., Thyagarajan N.
doaj   +1 more source

Reionization and structure formation with ARCADE [PDF]

New Astronomy Reviews, 2003
To be published in the proceedings of "The Cosmic Microwave Background and its Polarization", New Astronomy Reviews, (eds. S. Hanany and K.A. Olive)
openaire   +2 more sources

Constraining reionization morphology and source properties with 21 cm galaxy cross-correlation surveys

Astronomy & Astrophysics
Cross-correlations between 21 cm observations and galaxy surveys provide a powerful probe of reionization by providing robustness against foreground contamination while linking ionization morphology to galaxies. We quantified the constraining power of 21
Pietschke Yannic, Hutter Anne, Heneka Caroline   +2 more
doaj   +1 more source

PRISMS: U37126, a very blue ISM-naked starburst at z = 10.255 with a nearly 100% Lyman continuum escape fraction

Astronomy & Astrophysics
We present very deep (≈11 hours on-source) JWST/MIRI low-resolution spectroscopy of the rest-frame optical emission of U37126, a UV-bright (MUV ≃ −20) mildly lensed (μ ≃ 2.2) galaxy at z = 10.255.
Marques-Chaves R., Álvarez-Márquez J., Colina L., Kendrew S., Abdurro’uf, Blanco-Prieto C., Boogaard L. A., Castellano M., Caputi K. I., Crespo-Gómez A., Fontana A., Fudamoto Y., Fujimoto S., García-Marín M., Harikane Y., Harish S., Hashimoto T., Hsiao T., Iani E., Inoue A. K., Langeroodi D., Lin R., Melinder J., Napolitano L., Östlin G., Pérez-González P. G., Prieto-Jiménez C., Rinaldi P., Rodríguez Del Pino B., Santini P., Sugahara Y., Varo-O’Ferrall A., Wright G., Zavala J.   +33 more
doaj   +1 more source