Results 11 to 20 of about 2,287,120 (303)

Denoising and Feature Extraction for Space Infrared Dim Target Recognition Utilizing Optimal VMD and Dual-Band Thermometry

Machines, 2022
Space target feature extraction and space infrared target recognition are important components of space situational awareness (SSA). However, owing to far imaging distance between the space target and infrared detector, the infrared signal of the target ...
Hao Zhang, Peng Rao, Xin Chen, Hui Xia, Shenghao Zhang   +4 more
doaj   +1 more source

Dust in the inner regions of debris disks around A stars [PDF]

, 2008
We present infrared interferometric observations of the inner regions of two A-star debris disks, beta Leo and zeta Lep, using the FLUOR instrument at the CHARA interferometer on both short (30 m) and long (>200 m) baselines.
A. Merand, Aufdenberg, Backman, Bauer, Beichman, Beichman, Bryden, C. A. Beichman, Chen, Chen, Chiang, Ciardi, Claret, D. R. Ciardi, Dominik, E. Di Folco, Glasse, H. McAlister, Hanbury Brown, J. Aufdenberg, J. D. Monnier, J. Sturmann, Jayawardhana, Kennedy, Kenyon, Koerner, Krivov, L. Sturmann, Lachaume, Lamy, Meyer, Meyer, Moerchen, Mérand, N. Turner, Natta, O. Absil, Perryman, R. L. Akeson, R. Millan-Gabet, Rieke, Su, Sylvester, T. ten Brummelaar, ten Brummelaar, van Leeuwen, Wolf, Wyatt   +47 more
core   +3 more sources

High efficiency and fast van der Waals hetero-photodiodes with a unilateral depletion region

Nature Communications, 2019
Photovoltaic devices based on 2D materials still suffer from low quantum efficiencies due to interfacial charge recombination and inefficient contacts.
Feng Wu, Qing Li, Peng Wang, Hui Xia, Zhen Wang, Yang Wang, Man Luo, Long Chen, Fansheng Chen, Jinshui Miao, Xiaoshuang Chen, Wei Lu, Chongxin Shan, Anlian Pan, Xing Wu, Wencai Ren, Deep Jariwala, Weida Hu   +17 more
doaj   +1 more source

Mid Infrared Polarisation of Ultraluminous Infrared Galaxies [PDF]

, 2001
The mid infrared polarisation properties of four Ultraluminous Infrared Galaxies (ULIRGs) have been investigated by broad band filter observations with the ISOCAM instrument on board the Infrared Space Observatory (ISO).
A. Efstathiou, Antonucci, Antonucci, Barger, Carilli, Cesarsky, Clavel, Downes, Efstathiou, Efstathiou, Efstathiou, Genzel, Goldader, Gonatas, Granato, Greaves, Haas, Hall, Heisler, Hildebrand, Hiltner, Hughes, Jones, Kawara, Kessler, Koningl, Krolik, Krügel, Leach, Minchin, Novak, Ott, Pier, Puget, R. Siebenmorgen, Rigopoulou, Sanders, Sargent, Siebenmorgen, Siebenmorgen, Skinner, Smith, Smith, Soifer, Sopp, Veilleux, Ward-Thompson   +46 more
core   +2 more sources

High-Discrimination Circular Polarization Detection Based on Dielectric-Metal-Hybrid Chiral Metamirror Integrated Quantum Well Infrared Photodetectors

Sensors, 2022
Circular polarization detection enables a wide range of applications. With the miniaturization of optoelectronic systems, integrated circular polarization detectors with native sensitivity to the spin state of light have become highly sought after.
Jinyong Shen, Tianyun Zhu, Jing Zhou, Zeshi Chu, Xiansong Ren, Jie Deng, Xu Dai, Fangzhe Li, Bo Wang, Xiaoshuang Chen, Wei Lu   +10 more
doaj   +1 more source

ISO continuum observations of quasars at z=1-4 I.Spectral energy distributions of quasars from the UV to far-infrared [PDF]

, 2000
Eight luminous quasars with $ -30 < M_B < -27$ at z = 1.4 - 3.7 have been observed in the mid- and far-infrared using ISO. All the quasars have been detected in the mid-infrared bands of ISOCAM, while no far-infrared detections have been made with ...
Andreani, Andreani, Bechtold, Benford, Bertin, Bloom, C. Gabriel, Carilli, Carilli, Casali, Cesarsky, Chini, Chini, Dunlop, E. Nishihara, Elvis, Green, Guilloteau, Guilloteau, H. Okuda, H. Shibai, Haas, Hamann, Herbstmeier, Hughes, Impey, Irwin, Isaak, Ivison, K. Kawara, Kawara, Kawara, Kessler, Kneib, Kobayashi, Kormann, Landolt, Lemke, Lichti, Magain, Matsuhara, McMahon, Neugebauer, Neugebauer, Ohta, Omont, Omont, Osmer, Pier, Puget, Richards, Rowan-Robinson, S. Oyabu, Sanders, Schneider, Starck, T. Hasegawa, Taniguchi, Y. Sato, Y. Sofue, Y. Taniguchi, Y. Tsuzuki, Yoshii   +62 more
core   +2 more sources

Spitzer Observations of GX17+2: Confirmation of a Periodic Synchrotron Source [PDF]

, 2011
GX17+2 is a low-mass X-ray binary (LMXB) that is also a member of a small family of LMXBs known as "Z-sources" that are believed to have persistent X-ray luminosities that are very close to the Eddington limit. GX17+2 is highly variable at both radio and
Bornak, Jillian, Gelino, Christopher R., Gelino, Dawn M., Harrison, Thomas E., McNamara, Bernard J., Rupen, Michael P., Wachter, Stefanie   +6 more
core   +1 more source

Velocity Estimation for Space Infrared Dim Targets Based on Multi-Satellite Observation and Robust Locally Weighted Regression

Remote Sensing, 2023
Velocity estimation of space moving targets is a key part of space situational awareness. However, most of the existing methods do not consider the satellite observation process, and the performance mainly depends on the preset target motion state, which
Shenghao Zhang, Peng Rao, Hao Zhang, Xin Chen   +3 more
doaj   +1 more source

The WISE InfraRed Excesses around Degenerates (WIRED) Survey [PDF]

, 2010
The Wide-field Infrared Survey Explorer (WISE) is a NASA medium class Explorer mission that performed an all sky survey in four infrared bands. We present an overview of the WISE InfraRed Excesses around Degenerates (WIRED) Survey, which has the goals ...
Cohen, M., Debes, J. H., Hoard, D. W., Leisawitz, D. T., Wachter, S.   +4 more
core   +1 more source

Room temperature mid-infrared fibre photoluminescence and lasing beyond 5 μm in Ce3+ -doped chalcogenide glass – INVITED [PDF]

EPJ Web of Conferences, 2023
We review here our recent work in achieving mid-infrared (MIR) fibre lasing beyond 5 µm wavelength in Ce3+-doped selenide-chalcogenide fibre, as well as the observed photoluminescence in samples of the same composition but in particulate and bulk glass ...
Nunes Joel J., Sojka Łukasz, Crane Richard W., Furniss David, Tang Zhuoqi, Xiao Boyu, Benson Trevor M., Farries Mark C., Kalfagiannis Nikolaos, Barney Emma, Phang Sendy, Sujecki Slawomir, Seddon Angela B.   +12 more
doaj   +1 more source