Results 31 to 40 of about 38,151 (299)

ALMA and VLA observations of recombination lines and continuum toward the Becklin-Neugebauer object in Orion

, 2012
Compared to their centimeter-wavelength counterparts, millimeter recombination lines (RLs) are intrinsically brighter and are free of pressure broadening.
Galvan-Madrid, Roberto, Goddi, Ciriaco, Rodriguez, Luis F.   +2 more
core   +1 more source

Topologically Protected Edge State in Two-Dimensional Su–Schrieffer–Heeger Circuit

Research, 2019
Topological circuits, an exciting field just emerged over the last two years, have become a very accessible platform for realizing and exploring topological physics, with many of their physical phenomena and potential applications as yet to be discovered.
Shuo Liu, Wenlong Gao, Qian Zhang, Shaojie Ma, Lei Zhang, Changxu Liu, Yuan Jiang Xiang, Tie Jun Cui, Shuang Zhang   +8 more
doaj   +2 more sources

OPTICAL SENSOR FOR SURFACE PROFILE MONITORING OF PARABOLIC ANTENNA FOR MILLIMETER AND SUBMILLIMETER ASTRONOMY

Radio Physics and Radio Astronomy, 2016
Purpose: developing the sensor for non-contact measurement and profiling parabolic surfaces of antenna systems in the millimeter and submillimeter range with an aperture diameter up to 2 m.
D. L. Chechetkin, I. P. Belyankin, V. V. Silin, S. I. Slavgorodskiy, V. M. Shulga   +4 more
doaj   +1 more source

Pyramidal Structures on Yttria‐Stabilized Zirconia after High Temperature Exposure at 1500°C: New Features on an Old Material

Advanced Engineering Materials, EarlyView.
New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold, Dylan Jennings, Robert Vaßen   +2 more
wiley   +1 more source

HIGH-PRECISION MICROWAVE SPECTROMETER WITH SUB-DOPPLER SPECTRAL RESOLUTION

Radio Physics and Radio Astronomy, 2014
Results of improvement of the automated millimeter-wave spectrometer of the Institute of Radio Astronomy NAS–Ukraine aimed at reaching a sub-Doppler resolution on the basis of the Lamb-dip observation are presented.
E. A. Alekseev, V. V. Ilyushin, A. A. Mescheryakov   +2 more
doaj   +1 more source

Absolute calibration and beam reconstruction of MITO (a ground-based instrument in the millimetric region)

, 2003
An efficient sky data reconstruction derives from a precise characterization of the observing instrument. Here we describe the reconstruction of performances of a single-pixel 4-band photometer installed at MITO (Millimeter and Infrared Testagrigia ...
A Orlando, De Petris, De Petris, E Palladino, E.S Battistelli, Furniss, G Luzzi, G Savini, Griffin, Hildebrand, L Lamagna, M De Petris, Mainella, Mangum, Ulich, Werner, Whitcomb   +16 more
core   +1 more source

Technology for Submillimeter Astronomy [PDF]

, 2007
Despite about three decades of progress, the field of submillimeter astronomy remains quite challenging, because the detection technology is still under development and the transmission of the atmosphere is poor.
Zmuidzinas, J.
core   +1 more source

Photonic Engineering Enables All‐Passive Upconversion Imaging with Low‐Intensity Near‐Infrared Light

Advanced Functional Materials, EarlyView.
A passive upconversion imaging system enables the observation of scenes illuminated by low‐intensity incoherent near‐infrared light from 750 to 930 nm, by converting it into the visible without the use of external power. The upconverter is enabled by triplet–triplet annihilation in a bulk heterojunction, with absorption enhanced by plasmonic resonators
Rabeeya Hamid, Demeng Feng, Pournima Narayanan, Justin S. Edwards, Manchen Hu, Emma Belliveau, Minjeong Kim, Shenwei Yin, Sanket Deshpande, Chenghao Wan, Linda Pucurimay, David A. Czaplewski, Daniel N. Congreve, Mikhail A. Kats   +13 more
wiley   +1 more source

A Broad Line-width, Compact, Millimeter-bright Molecular Emission Line Source near the Galactic Center

The Astrophysical Journal Letters
A compact source, G0.02467–0.0727, was detected in Atacama Large Millimeter/submillimeter Array 3 mm observations in continuum and very broad line emission.
Adam Ginsburg, John Bally, Ashley T. Barnes, Cara Battersby, Nazar Budaiev, Natalie O. Butterfield, Paola Caselli, Laura Colzi, Katarzyna M. Dutkowska, Pablo García, Savannah Gramze, Jonathan D. Henshaw, Yue Hu, Desmond Jeff, Izaskun Jiménez-Serra, Jens Kauffmann, Ralf S. Klessen, Emily M. Levesque, Steven N. Longmore, Xing Lu, Elisabeth A. C. Mills, Mark R. Morris, Francisco Nogueras-Lara, Tomoharu Oka, Jaime E. Pineda, Thushara G. S. Pillai, Víctor M. Rivilla, Álvaro Sánchez-Monge, Miriam G. Santa-Maria, Howard A. Smith, Yoshiaki Sofue, Mattia C. Sormani, Grant R. Tremblay, Gijs Vermariën, Alexey Vikhlinin, Serena Viti, Dan Walker, Q. Daniel Wang, Fengwei Xu, Qizhou Zhang   +39 more
doaj   +1 more source

Study on the Optoelectronic Design for Korean Mobile Satellite Laser Ranging System [PDF]

Journal of Astronomy and Space Sciences, 2011
Korea Astronomy and Space Science Institute has been developing one mobile and one stationary satellite laser ranging system for the space geodesy research and precise orbit determination since 2008, which are called as ARGO-M and ARGO-F, respectively.
Hyung-Chul Lim, Seong-Cheol Bang, Sung-Yeol Yu, Yoon-Kyung Seo, Eunseo Park, Kwang Dong Kim, Jakyoung Nah, Jeong Gyun Jang, Bi-Ho Jang, Jang-Hyun Park, Jong-Uk Park   +10 more
doaj   +1 more source