Results 21 to 30 of about 3,908,495 (300)
Polarization and brightness temperature observations of Venus with the GMRT [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 Venus was observed at frequencies of 1297.67 MHz (23 cm), 607.67 MHz (49 cm) and 233.67 MHz (1.28 m) with the Giant Metrewave Radio Telescope (GMRT) during the period of 25th July and 6th September 2015 when it was close to its inferior conjunction. Values of the brightness temperature (Tb) of Venus from these observations were derived as 622{\pm}43 K,
Nithin Mohan +3 more
openaire +2 more sources
International Journal of Antennas and Propagation, 2016 Simulation in passive millimeter-wave (MMW) imaging of rough surfaces is an indispensable step in the simulation in passive radiation imaging, especially for the rough surfaces of different roughness surfaces.
Chuan Yin, Ming Zhang, Yaming Bo
doaj +1 more source
Homogeneous vs Biased IGM: Impact on Reionization
Frontiers in Astronomy and Space Sciences, 2021 This paper considers the impact of large scale biasing of the IGM on reionization. The two simplest but extreme scenarios for IGM biasing are: an unbiased IGM which has a constant density and an IGM with density equal to the collapsed matter density.
Dinesh Raut
doaj +1 more source
SPECIAL FIELDS OF THE GALAXY RADIO EMISSION
Odessa Astronomical Publications, 2016 The brightness temperatures of radio emission were measured with the UTR-2 low-frequency radio telescope at frequencies 12.6, 14.7, 16.7, 20 and 25 MHz for the following Galaxy regions: the North Pole, the area of minimum radio brightness and the ...
N. M. Vasilenko, M. A. Sidorchuk
doaj +1 more source
Retrieval of sea surface temperature from space based on modeling of infrared radiative transfer: capabilities and limitations [PDF]
, 2004 The retrieval (estimation) of sea surface temperatures (SSTs) from space-based infrared observations is increasingly performed using retrieval coefficients derived from radiative transfer simulations of top-of-atmosphere brightness temperatures (BTs ...
Merchant, Christopher J. +3 more
core +1 more source
Colour of baked products during baking
Czech Journal of Food Sciences, 2000 The parameters of the colour of the surface of bakery products - brightness L*, a* for red and b* for yellow colour - were measured at different temperature regimes. The parameters were found to change during the time of baking.
P. Novotná, A. Landfeld
doaj +1 more source
Microwave Observations of Venus with CLASS
The Planetary Science Journal, 2023 We report on the disk-averaged absolute brightness temperatures of Venus measured at four microwave frequency bands with the Cosmology Large Angular Scale Surveyor.
Sumit Dahal +23 more
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Intrinsic brightness temperatures of blazar jets at 15 GHz
EPJ Web of Conferences, 2013 We have developed a new Bayesian Markov Chain Monte Carlo method to deconvolve light curves of blazars into individual flares, including proper estimation of the fit errors.
Hovatta Talvikki +7 more
doaj +1 more source
SMOS Brightness Temperature Monitoring Quality Control Review and Enhancements
Remote Sensing, 2021 Brightness temperature (Tb) observations from the European Space Agency (ESA) Soil Moisture Ocean Salinity (SMOS) instrument are passively monitored in the European Centre for Medium-range Weather Forecasts (ECMWF) Integrated Forecasting System (IFS ...
Peter Weston, Patricia de Rosnay
doaj +1 more source
Multi-Parameter Regularization Method for Synthetic Aperture Imaging Radiometers
Remote Sensing, 2021 Synthetic aperture imaging radiometers (SAIRs) are powerful passive microwave systems for high-resolution imaging by use of synthetic aperture technique.
Xiaocheng Yang +4 more
doaj +1 more source