Results 121 to 130 of about 4,678,333 (310)

Overconstrained Dynamics in Galaxy Redshift Surveys [PDF]

The Astrophysical Journal, 2001
The least-action principle (LAP) method is used on four galaxy redshift surveys to measure the density parameter Omega_m and the matter and galaxy-galaxy power spectra. The datasets are PSCz, ORS, Mark III and SFI. The LAP method is applied on the surveys simultaneously, resulting in an overconstrained dynamical system that describes the cosmic ...
openaire   +2 more sources

Flexible Chemiresistive Chitosan‐Glycerol Sensors on Laser‐Induced Graphene Electrodes for Room‐Temperature Ammonia Detection

Advanced Materials Technologies, EarlyView.
Flexible Chitosan‐glycerol sensor integrated with porous laser‐induced graphene (LIG) electrodes enable room‐temperature chemiresistive detection of ammonia (NH3) and proof‐of‐concept detection of fish spoilage. ABSTRACT We report a metal‐free sensor platform combining laser induced graphene (LIG) electrodes with drop‐deposited, glycerol‐plasticized ...
Mintesinot Tamiru Mengistu, Richard Murray, Cara‐Lena Nies, Cathal Larrigy, Martina Piletti, Jahidul Islam, Daniela Iacopino, Eileen Hurley, Michael Nolan, Aidan J. Quinn   +9 more
wiley   +1 more source

Photometric Redshift Forecast for the 7-Dimensional Sky Survey

The Astrophysical Journal
We investigate the expected accuracy of redshifts that can be obtained using low-resolution spectroscopic (medium-band) data from the 7-Dimensional Sky Survey (7DS). By leveraging 40 densely sampled filters with widths of FWHM = 25 nm, we create 7DS mock
Eunhee Ko, Myungshin Im, Yujin Yang, Ji Hoon Kim, Seong-Kook Lee, Gregory S.-H. Paek   +5 more
doaj   +1 more source

The redshifts from 122 bands: Comparative redshift forecast for low-resolution spectra from SPHEREx and the 7-Dimensional Sky Survey (7DS)

Astronomy & Astrophysics
The recently initiated SPHEREx and 7DS surveys will deliver low-resolution spectra (R ∼ 20 − 130) for hundreds of millions of galaxies over the optical to near-infrared range (0.4 − 5.0 μm), covering a wide sky area without sample selection. These unique
Bae Jangho, Lee Bomee, Im Myungshin, Bahk Hyeonguk, Dachan Kim, Hwang Ho Seong, Hong Sungryong, Kim Suk, Kim Minjin, Kim Taewan, Lee Jeyeon, Sohn Jubee, Song Hyunmi, Chang Seo-Won, Cheng Yun-Ting, Faisst Andreas L., Huai Zhaoyu, Jeong Woong-Seob, Kim Ji Hoon, Kim Dohyeong, Kim Yongjung, Lee Seong-Kook, Masters Daniel C., Ko Eunhee   +23 more
doaj   +1 more source

Deshima 2.0: Rapid Redshift Surveys and Multi-line Spectroscopy of Dusty Galaxies. [PDF]

J Low Temp Phys, 2022
Rybak M, Bakx T, Baselmans J, Karatsu K, Kohno K, Takekoshi T, Tamura Y, Taniguchi A, van der Werf P, Endo A.   +9 more
europepmc   +1 more source

Turning Water Into a Tool: From Degradation Pathways to Functional Engineering in Halide Perovskites

Advanced Materials Technologies, EarlyView.
Water exhibits a threshold‐dependent dual role in lead halide perovskites, acting either as a degradation trigger or as a powerful tool for defect passivation, recrystallization, and structural engineering. This review discusses how controlled water‐mediated interactions govern stability, dimensionality, and optoelectronic performance, providing ...
Raphaella T. S. Gonçalves, Gabriela O. Gera, Aryane Tofanello, Jose A. Souza, Andre L. M. Freitas   +4 more
wiley   +1 more source

Electroactive 3D Porous Graphene Foam Impedimetric Biosensor for Ultrasensitive Detection of MCF‐7‐Cells‐Derived Extracellular Vesicles in Human Serum

Advanced Materials Technologies, EarlyView.
A label‐free impedimetric biosensor based on electroactive 3D porous graphene foam enables ultrasensitive and selective detection of CD81 protein and MCF‐7 cell‐derived extracellular vesicles in human serum. Detection limits of 0.048 fg/mL for CD81 and ∼24 EVs/mL are achieved, demonstrating a robust platform for selective, label‐free, and ...
Michael Robert Furness, Ashish Kalkal, Tia Wardlaw, Jessica Valli, Suresh Chandra Baral, Pablo Lozano Sanchez, Marco Caffio, Sudhagar Pitchaimuthu, Olga Oikonomidou, Jason Webber, Nick R. Leslie, Anitha Devadoss   +11 more
wiley   +1 more source

The Stromlo-APM Redshift Survey. IV. The Redshift Catalog

The Astrophysical Journal Supplement Series, 1996
The Stromlo-APM Redshift Survey consists of 1797 galaxies with {ital b}{sub {ital J}}{le}17.15 selected randomly, at a rate of 1 in 20 from automated plate measurement (APM) scans. The survey covers a solid angle of 1.3 sr (4300 deg{sup 2}) in the south Galactic cap. Redshifts have been measured for 1790 (99.6{percent}) of the galaxies.
J. Loveday, B. A. Peterson, S. J. Maddox, G. Efstathiou   +3 more
openaire   +1 more source

Printed SWCNT‐Based p–n Junction Thin‐Film Near‐Infrared Photoresistors Enabled by a Sustainable Furan‐Derived π‐Conjugated Polymer

Advanced Materials Technologies, EarlyView.
A sustainable polymer–carbon nanotube bilayer enables efficient near‐infrared photodetection in a simple lateral planar p–n junction thin‐film architecture. Thermal side‐chain cleavage enhances interfacial coupling, shifts the dominant photoresponse from 800 to 1000 nm, and substantially improves device performance.
Jenner H. L. Ngai, Zhao Li, Jianfu Ding, Yuning Li   +3 more
wiley   +1 more source

Probabilistic Forward Modeling of Galaxy Catalogs with Normalizing Flows

The Astronomical Journal
Evaluating the accuracy and calibration of the redshift posteriors produced by photometric redshift (photo- z ) estimators is vital for enabling precision cosmology and extragalactic astrophysics with modern wide-field photometric surveys.
John Franklin Crenshaw, J. Bryce Kalmbach, Alexander Gagliano, Ziang Yan, Andrew J. Connolly, Alex I. Malz, Samuel J. Schmidt, The LSST Dark Energy Science Collaboration   +7 more
doaj   +1 more source