Results 91 to 100 of about 108,440 (263)

Ultrasensitive and Visible Detection of Influenza A Virus Based on Enzymatic Properties of Layered Gold Nanoparticles

Small Structures, Volume 5, Issue 4, April 2024.
An ultrasensitive and visible detection for influenza A virus is presented by leveraging the properties of gold nanoparticles (GNPs). Dual amplification, achieved through a synthetic nanoprobe utilizing the enzymatic properties of layered GNPs, exhibits a higher sensitivity. This system is suitable for point‐of‐care tests within 55 min by verifying its
Eunji Jeong, Geunseon Park, Jinyoung Kim, Sojeong Lee, Chaewon Park, Jong‐Woo Lim, Minjoo Yeom, Daesub Song, Seungjoo Haam   +8 more
wiley   +1 more source

Chemical Evolution of the Universe and its Consequences for Gravitational‐Wave Astrophysics

Annalen der Physik, Volume 536, Issue 2, February 2024.
Population properties of double compact object mergers (especially binary black holes) are sensitive to the metallicity dependent cosmic star formation history. The uncertainty of this quantity cannot be ignored and makes the interpretation of current gravitational wave observations difficult.
Martyna Chruślińska
wiley   +1 more source

Cosmology with Gravitational Waves: A Review

Annalen der Physik, Volume 536, Issue 2, February 2024.
The review gives an overview of the most recent advances in gravitational‐wave (GWs) cosmology. After an in‐depth discussion of methodologies and tools for GW cosmology, it presents the latest results on measurements of standard cosmological parameters from the LIGO, Virgo, and KAGRA detections.
Simone Mastrogiovanni, Christos Karathanasis, Jonathan Gair, Gregory Ashton, Stefano Rinaldi, Hsiang‐Yu Huang, Gergely Dálya   +6 more
wiley   +1 more source

Very High Redshift Radio Galaxies [PDF]

, 1999
High redshift radio galaxies (HzRGs) provide unique targets for the study of the formation and evolution of massive galaxies and galaxy clusters at very high redshifts. We discuss how efficient HzRG samples are selected, the evidence for strong morphological evolution at near-infrared wavelengths, and for jet-induced star formation in the z=3.800 HzRG ...
van Breugel, Wil, De Breuck, Carlos, Rottgering, Huub, Miley, George, Stanford, Adam   +4 more
openaire   +2 more sources

Stratified learning: A general‐purpose statistical method for improved learning under covariate shift

Statistical Analysis and Data Mining: The ASA Data Science Journal, Volume 17, Issue 1, February 2024.
Abstract We propose a simple, statistically principled, and theoretically justified method to improve supervised learning when the training set is not representative, a situation known as covariate shift. We build upon a well‐established methodology in causal inference and show that the effects of covariate shift can be reduced or eliminated by ...
Maximilian Autenrieth, David A. van Dyk, Roberto Trotta, David C. Stenning   +3 more
wiley   +1 more source

ALESS-JWST: Joint (Sub)kiloparsec JWST and ALMA Imaging of z ~ 3 Submillimeter Galaxies Reveals Heavily Obscured Bulge Formation Events

The Astrophysical Journal
We present JWST NIRCam imaging targeting 13 z  ~ 3 infrared-luminous ( L _IR  ∼ 5 × 10 ^12 L _⊙ ) galaxies from the ALESS survey with uniquely deep, high-resolution (0 $\mathop{.}\limits^{\unicode{x02033}}$ 08–0 $\mathop{.}\limits^{^{\prime\prime} }$ 16)
J. A. Hodge, E. da Cunha, S. Kendrew, J. Li, I. Smail, B. A. Westoby, O. Nayak, A. M. Swinbank, C.-C. Chen, F. Walter, P. van der Werf, M. Cracraft, A. Battisti, W. N. Brandt, G. Calistro Rivera, S. C. Chapman, P. Cox, H. Dannerbauer, R. Decarli, M. Frias Castillo, T. R. Greve, K. K. Knudsen, S. Leslie, K. M. Menten, M. Rybak, E. Schinnerer, J. L. Wardlow, A. Weiss   +27 more
doaj   +1 more source

Stellar properties of z ~ 1 Lyman-break galaxies from ACS slitless grism spectra

, 2010
Lyman-break galaxies are now regularly found in the high redshift Universe by searching for the break in the galaxy spectrum caused by the Lyman-limit redshifted into the optical or even near-IR.
Balestra, Balogh, Bolzonella, Bruzual, Bunker, Burgarella, Calzetti, Daddi, Finkelstein, Franx, Fynbo, Fèvre, Gawiser, Giavalisco, Guaita, Gunn, H. Kuntschner, Hamilton, J. R. Walsh, K. K. Nilsson, Kauffmann, Kennicutt, Kriek, Leitherer, Luo, M. Kümmel, M. Lombardi, Mignoli, Møller, Nilsson, Nilsson, Nilsson, Nonino, O. Möller-Nilsson, Ouchi, Overzier, P. Rosati, Papovich, Pettini, Pirzkal, R. A. E. Fosbury, Ranalli, Ravikumar, Retzlaff, Shapley, Shapley, Steidel, Steidel, Straughn, Vanzella, Venemans, Verma, Xu, Yabe   +53 more
core   +1 more source

Multivariate Predictors of Lyman Continuum Escape. II. Predicting Lyman Continuum Escape Fractions for High-redshift Galaxies

The Astrophysical Journal
JWST is uncovering the properties of ever-increasing numbers of galaxies at z > 6, during the epoch of reionization. Connecting these observed populations to the process of reionization requires understanding how efficiently they produce Lyman continuum (
Anne E. Jaskot, Anneliese C. Silveyra, Anna Plantinga, Sophia R. Flury, Matthew Hayes, John Chisholm, Timothy Heckman, Laura Pentericci, Daniel Schaerer, Maxime Trebitsch, Anne Verhamme, Cody Carr, Henry C. Ferguson, Zhiyuan Ji, Mauro Giavalisco, Alaina Henry, Rui Marques-Chaves, Göran Östlin, Alberto Saldana-Lopez, Claudia Scarlata, Gábor Worseck, Xinfeng Xu   +21 more
doaj   +1 more source

MAMMOTH-Subaru. IV. Large Scale Structure and Clustering Analysis of Lyα Emitters and Lyα Blobs at z = 2.2–2.3

The Astrophysical Journal
We report the large scale structure and clustering analysis of Ly α emitters (LAEs) and Ly α blobs (LABs) at z  = 2.2–2.3. Using 3341 LAEs, 117 LABs, and 58 bright (Ly α luminosity L _Ly _α  > 10 ^43.4 erg s ^−1 ) LABs at z  = 2.2–2.3 selected with ...
Haibin Zhang, Zheng Cai, Mingyu Li, Yongming Liang, Nobunari Kashikawa, Ke Ma, Yunjing Wu, Qiong Li, Sean D. Johnson, Satoshi Kikuta, Masami Ouchi, Xiaohui Fan, Yuanhang Ning   +12 more
doaj   +1 more source

A search for distant radio galaxies from SUMSS and NVSS: III. radio spectral energy distributions and the z-alpha correlation

, 2006
This is the third in a series of papers that present observations and results for a sample of 76 ultra-steep-spectrum radio sources designed to find galaxies at high redshift.
Bryant, J. J., De Breuck, C., Ekers, R. D., Hunstead, R. W., Klamer, I. J., Sadler, E. M.   +5 more
core   +1 more source