Results 1 to 10 of about 278,474 (234)
Intrinsic Brightness Temperatures of AGN Jets [PDF]
The Astrophysical Journal, 2006 We present a new method for studying the intrinsic brightness temperatures of the parsec-scale jet cores of Active Galactic Nuclei (AGN). Our method uses observed superluminal motions and observed brightness temperatures for a large sample of AGN to ...
D. C. Homan +10 more
core +6 more sources
A RADIOMETER FOR METEOROLOGICAL MEASUREMENTS WITH ACCURATE CALIBRATION BY THE SKY BRIGHTNESS TEMPERATURE [PDF]
Радиофизика и электроника, 2016 Methods for passive sensing the atmosphere in the microwave range are one of important directions of remote sensing of environmental protection. To develop simple and cost-effective technical solutions and radiometric measuring techniques is an important
V. A. Kabanov
doaj +2 more sources
Experimental Investigation of Ground Radiation on Dielectric and Brightness Temperature of Soil Moisture and Soil Salinity [PDF]
Sensors, 2020 Soil moisture and salinity are crucial parameters of the Earth’s ecosystem; how to understand the radiation properties of them is of great significance for remote sensing monitoring.
Weizhen Wang +5 more
doaj +2 more sources
Brightness temperature constraints from interferometric visibilities [PDF]
Astronomy & Astrophysics, 2014 The brightness temperature is an effective parameter that describes the physical properties of emitting material in astrophysical objects. It is commonly determined by imaging and modeling the structure of the emitting region and estimating its flux ...
Lobanov, Andrei
core +3 more sources
Temperature, brightness and spectral index of the Cygnus radio loop [PDF]
, 2011 The estimated brightness of the Cygnus loop supernova remnant (SNR) at 2720, 1420, 820, 408 and 34.5 MHz are presented. The observations of the continuum radio emission are used to calculate the mean brightness temperatures and surface brightnesses of ...
V. Borka Jovanović, D. Urošević
openalex +5 more sources
Remote Sensing, 2023 The snow temperature above the ice sheet is one of the basic characteristic parameters of the ice sheet, which plays an important role in the study of the global climate.
Zhiwei Chen +4 more
doaj +1 more source
Frontiers in Earth Science, 2022 We processed MODIS data received from ground receiving stations into the spatial range of the Qinghai-Tibetan Plateau (China) and the eastern margin of the plateau, and then 283 K was set as the threshold value to remove the area covered by clouds.
Xing Yang +8 more
doaj +1 more source
Remote Sensing, 2020 We proposed a cloud discrimination method applicable in Japan using MODIS nighttime data, monitored the singularity of the spatiotemporal correlation of surface temperature anomalies and investigated the possibility of detecting and monitoring lava ...
Rika Tsutsumi +3 more
doaj +1 more source
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023 The topography can be very important for passive microwave remote sensing of soil moisture due to its complex influence on the emitted brightness temperature observed by a satellite microwave radiometer.
Yu Bai +8 more
doaj +1 more source
Brightness temperature for radio sources [PDF]
Proceedings of the International Astronomical Union, 2007 AbstractIn this work, using the database of the university of Michigan Radio Astronomy Observatory (UMRAO), we determined the brightness temperatures, TB for a sample of 167 radio sources. The value of TB is in a range of log TB(K) = 10.46 to 20.08, which suggested that the boosting factors are in a range of δ = 0.41 to 41.26.
J. H. Fan +5 more
openaire +1 more source