Results 61 to 70 of about 38,209 (292)

PEACHES. IV. Tracing the Formation and Evolution of C2H in Perseus Low-mass Protostars

The Astrophysical Journal
The radical hydrocarbon molecule C _2 H is widely detected in various stages of star and planet formation, and has emerged as a useful tracer of high-C/O gas within the photochemically active surface layers of mature (Class II) protoplanetary disks ...
Jack G. Anderson, Jennifer B. Bergner, Yao-Lun Yang, Yichen Zhang, Nami Sakai   +4 more
doaj   +1 more source

Flexible and High‐Performance Perovskite‐Polymer Composites for Dual X‐Ray and Proton Direct Detection

Advanced Optical Materials, EarlyView.
A polymer–perovskite composite obtained by mechanochemical synthesis enables thick, tunable active layers for efficient absorption of highly penetrating ionizing radiation. Vertical‐electrode detectors achieve low X‐ray detection limits and high sensitivity direct 5 MeV proton sensing.
Camilla Bordoni, Bas A. H. Huisman, Joost W. C. Reinders, Ilaria Fratelli, Massimo Chiari, Laura Basiricò, Henk J. Bolink, Andrea Ciavatti, Michele Sessolo, Beatrice Fraboni   +9 more
wiley   +1 more source

Interaction between celestial and terrestrial reference frames and some considerations for the next VLBI-based ICRF [PDF]

, 2014
In this paper we outline several problems related to the realization of the international celestial and terrestrial reference frames ICRF and ITRF at the millimeter level of accuracy, with emphasis on ICRF issues. The main topics considered are: analysis
Lambert, Sebastien, Ma, Chopo, Malkin, Zinovy, Schuh, Harald   +3 more
core  

WSPEC: A waveguide filter-bank focal plane array spectrometer for millimeter wave astronomy and cosmology [PDF]

, 2015
Imaging and spectroscopy at (sub-)millimeter wavelengths are key frontiers in astronomy and cosmology. Large area spectral surveys with moderate spectral resolution (R=50-200) will be used to characterize large scale structure and star formation through ...
Aguirre, James, Bryan, Sean, Che, George, Doyle, Simon, Flanigan, Daniel, Groppi, Christopher, Johnson, Bradley, Jones, Glenn, Mauskopf, Philip, McCarrick, Heather, Monfardini, Alessandro, Mroczkowski, Tony   +11 more
core   +4 more sources

Multi‐Dielectric Metasurfaces for Ultrabright, Tunable Structural Color and Reconfigurable Optical Filtering with Extraordinarily Large Color Span

Advanced Optical Materials, EarlyView.
Structural color generation is an emerging field for digital display and printing applications. This report presents a novel truncated‐cone design and the first use of GaP sandwiched between two layers of TiO2, demonstrating ultra‐bright, tunable colors with a record color gamut.
Md Rumon Miah, Yavuz Selim Aydın, Hilmi Volkan Demir   +2 more
wiley   +1 more source

JWST’s PEARLS: A JWST/NIRCam View of ALMA Sources

The Astrophysical Journal Letters, 2023
We report the results of James Webb Space Telescope/NIRCam observations of 19 (sub)millimeter sources detected by the Atacama Large Millimeter Array (ALMA).
Cheng Cheng, Jia-Sheng Huang, Ian Smail, Haojing Yan, Seth H. Cohen, Rolf A. Jansen, Rogier A. Windhorst, Zhiyuan Ma, Anton Koekemoer, Christopher N. A. Willmer, S. P. Willner, Jose M. Diego, Brenda Frye, Christopher J. Conselice, Leonardo Ferreira, Andreea Petric, Min Yun, Hansung B. Gim, Maria del Carmen Polletta, Kenneth J. Duncan, Benne W. Holwerda, Huub J. A. Röttgering, Rachel Honor, Nimish P. Hathi, Patrick S. Kamieneski, Nathan J. Adams, Dan Coe, Tom Broadhurst, Jake Summers, Scott Tompkins, Simon P. Driver, Norman A. Grogin, Madeline A. Marshall, Nor Pirzkal, Aaron Robotham, Russell E. Ryan Jr.   +35 more
doaj   +1 more source

Determining the Parameters of Massive Protostellar Clouds via Radiative Transfer Modeling

, 2010
A one-dimensional method for reconstructing the structure of prestellar and protostellar clouds is presented. The method is based on radiative transfer computations and a comparison of theoretical and observed intensity distributions at both millimeter ...
A. Baier, A. M. Fateeva, B. A. Whitney, B. T. Draine, B. T. Draine, C. Brinch, C. W. Ormel, D. S. Wiebe, H. Beuther, H. Zinnecker, J. F. Alves, J. M. Rathborne, J. S. Mathis, M. P. Egan, M. Perault, M. Tafalla, N. G. Bochkarev, P. Charbonneau, P. F. Goldsmith, R. A. Benjamin, R. Launhardt, S. J. Carey, T. S. Vasyunina, T. Vasyunina, Th. Robitaille, Ya. N. Pavlyuchenkov, Ya. N. Pavlyuchenkov   +26 more
core   +1 more source

125 - 211 GHz low noise MMIC amplifier design for radio astronomy [PDF]

, 2019
To achieve the low noise and wide bandwidth required for millimeter wavelength astronomy applications, superconductor-insulator-superconductor (SIS) mixer based receiver systems have typically been used.
Cleary, Kieran, Fuller, Gary A., George, Danielle, Lai, Richard, McGenn, William, Mei, Gerry, Readhead, Anthony, White, Daniel   +7 more
core   +2 more sources

2D Copper MOF Membranes with Precise Pores for Ionic Memory

Advanced Science, EarlyView.
 . ABSTRACT Biological ion channels play a critical role in the complex physiological processes of living organisms. Inspired by these natural systems, we demonstrate the fabrication of ultrathin 2D copper‐based metal‐organic framework (CuMOF) films and their application to mimic key functionalities of biological membranes. Using a liquid–air interface
Hiran Jyothilal, Raj Kumar Gogoi, Yuchen Liu, Vikas Sharma, Solleti Goutham, Michael Hutton, Rachel C. Kilbride, Daniel T.W. Toolan, Ashok Keerthi, Boya Radha   +9 more
wiley   +1 more source