Results 21 to 30 of about 34,734 (271)

Retrospect and prospect of ionospheric weather observed by FORMOSAT-3/COSMIC and FORMOSAT-7/COSMIC-2

Terrestrial, Atmospheric and Oceanic Sciences, 2022
Key Points FORMOSAT-3/COSMIC and FORMOSAT-7/COSMIC-2 uniformly observe 3D electron density. FORMOSAT-3 and FORMOSAT-7 enable ionospheric weather forecasting.
Tiger Jann-Yenq Liu, Charles Chien‐Hung Lin, Chi‐Yen Lin, I-Te Lee, Yang-Yi Sun, Shih-Ping Chen, Fu-Yuan Chang, Panthalingal Krishnanunni Rajesh, Chih-Ting Hsu, Tomoko Matsuo, Chia-Hung Chen, Ho‐Fang Tsai   +11 more
doaj   +1 more source

Wavenumber-4 Structure in COSMIC-2 Observations: Vertical Plane Perspective

Remote Sensing, 2023
High-rate radio occultation (RO) in COSMIC-2 (FORMOSAT7) enables us to investigate the finer details of the ionosphere owing to the measurements being made at a significantly high spatiotemporal resolution, which was unthinkable a decade ago. In the vertical plane, local-time ionospheric wavenumber-4 (WN4) structures display tilted phase-fronts over ...
Lalit Mohan Joshi, Lung-Chih Tsai, Shin-Yi Su   +2 more
openaire   +2 more sources

Research on rapid imaging with cosmic ray muon scattering tomography

Scientific Reports, 2023
Cosmic ray muons tomography is a non-destructive imaging technique that uses the natural radiation of cosmic ray muons to create tomographic images of objects.
Qun-Gang Wen
doaj   +1 more source

An Atlas of Color-selected Quiescent Galaxies at z > 3 in Public JWST Fields

The Astrophysical Journal, 2023
We present the results of a systematic search for candidate quiescent galaxies in the distant universe in 11 JWST fields with publicly available observations collected during the first 3 months of operations and covering an effective sky area of ∼145 ...
Francesco Valentino, Gabriel Brammer, Katriona M. L. Gould, Vasily Kokorev, Seiji Fujimoto, Christian Kragh Jespersen, Aswin P. Vijayan, John R. Weaver, Kei Ito, Masayuki Tanaka, Olivier Ilbert, Georgios E. Magdis, Katherine E. Whitaker, Andreas L. Faisst, Anna Gallazzi, Steven Gillman, Clara Giménez-Arteaga, Carlos Gómez-Guijarro, Mariko Kubo, Kasper E. Heintz, Michaela Hirschmann, Pascal Oesch, Masato Onodera, Francesca Rizzo, Minju Lee, Victoria Strait, Sune Toft   +26 more
doaj   +1 more source

The surface density of Extremely Red Objects in high-z quasar fields [PDF]

, 2003
We report on a study of the surface density of Extremely Red Objects (EROs) in the fields of 13 radio-loud quasars at 1.8 < z < 3.0 covering a total area of 61.7 sqr arcmin.
Barthel, Bertin, Cimatti, Cimatti, Daddi, Elston, G. Neugebauer, Hall, Hewitt, Hu, L. Armus, M. Wold, M.D. Lehnert, Mannucci, McCarthy, Roche, Scodeggio, Smail, T.H. Jarrett, Thompson   +19 more
core   +2 more sources

Comparison of COSMIC and COSMIC-2 Radio Occultation Refractivity and Bending Angle Uncertainties in August 2006 and 2021

Atmosphere, 2022
We compare the random error statistics (uncertainties) of COSMIC (Constellation Observing System for Meteorology, Ionosphere and Climate, C1) and COSMIC-2 (C2) radio occultation (RO) bending angles and refractivities for the months of August 2006 and ...
Richard Anthes, Jeremiah Sjoberg, Xuelei Feng, Stig Syndergaard   +3 more
doaj   +1 more source

Improving topside ionospheric empirical model using FORMOSAT-7/COSMIC-2 data

Journal of Geodesy, 2023
AbstractThe precise description of the topside ionosphere using an ionospheric empirical model has always been a work in progress. The NeQuick topside model is greatly enhanced by adopting radio occultation data from the FORMOSAT-7/COSMIC-2 constellation.
Xiaodong Ren, Yan Li, Dengkui Mei, Wei Zhu, Xiaohong Zhang   +4 more
openaire   +1 more source

Using the Commercial GNSS RO Spire Data in the Neutral Atmosphere for Climate and Weather Prediction Studies

Remote Sensing, 2023
Recently, the NOAA has included GNSS (Global Navigation Satellite System) Radio Occultation (RO) data as one of the crucial long-term observables for weather and climate applications.
Shu-peng Ho, Xinjia Zhou, Xi Shao, Yong Chen, Xin Jing, William Miller   +5 more
doaj   +1 more source

A JWST/NIRSpec First Census of Broad-line AGNs at z = 4–7: Detection of 10 Faint AGNs with M BH ∼ 106–108 M ⊙ and Their Host Galaxy Properties

The Astrophysical Journal, 2023
We present the first statistical sample of faint type 1 AGNs at z > 4 identified by JWST/NIRSpec deep spectroscopy. Among the 185 galaxies at z _spec = 3.8–8.9 confirmed with NIRSpec, our systematic search for broad-line emission reveals 10 type 1 AGNs ...
Yuichi Harikane, Yechi Zhang, Kimihiko Nakajima, Masami Ouchi, Yuki Isobe, Yoshiaki Ono, Shun Hatano, Yi Xu, Hiroya Umeda   +8 more
doaj   +1 more source

Closed Universe in Mirage Cosmology [PDF]

, 2000
We study the cosmological evolution of the closed universe on a spherical probe brane moving in the AdS$_m\times S^n$ background and the near-horizon background of the dilatonic D-branes.
A. Chamblin, A. Hashimoto, A. Kehagias, C. Csaki, D. J. Chung, Donam Youm, E. E. Flanagan, G. Dvali, H. A. Chamblin, I. Antoniadis, J. Lykken, J. M. Cline, J. Madore, J. Maldacena, J. McGreevy, J. Y. Kim, J. Y. Kim, L. Randall, L. Randall, M. T. Grisaru, N. Arkani-Hamed, N. Arkani-Hamed, P. Binetruy, P. Kanti, P. Kraus, S. R. Das   +25 more
core   +5 more sources