Results 41 to 50 of about 1,965,723 (227)

SOLAR MEASUREMENTS FOR 21 CM WAVELENGTH USING 3 M RADIO TELESCOPE

Progress In Electromagnetics Research Letters, 2019
Solar hydrogen line emission has been observed at the frequency of 1.42 GHz (21 cm wavelength) with 3 m radio telescope installed inside the University of Baghdad campus.
Uday E. Jallod, Kamal M. Abood
semanticscholar   +1 more source

RatanSunPy: A robust preprocessing pipeline for RATAN-600 solar radio observations data [PDF]

Astronomy and Computing
The advancement of observational technologies and software for processing and visualizing spectro-polarimetric microwave data obtained with the RATAN-600 radio telescope opens new opportunities for studying the physical characteristics of solar plasma at
I. Knyazeva, Igor Lysov, E. Kurochkin, A. Shendrik, D. Derkach, N. Makarenko   +5 more
semanticscholar   +1 more source

DYNAMIC CHARACTERISTICS OF THE MAIN INDEXES OF SPACE WEATHER AND THEIR APPLICATION TO THE ANALYSIS MONITORING OBSERVATIONS FLUX DENSITIES OF POWER RADIO SOURCES ON RT <URAN-4>

Odessa Astronomical Publications, 2012
On radio telescope "URAN-4" of the Odessa observatory of Radio-astronomical Institute during twenty five years (since 1987 till present) monitoring of power galactic and extragalactic radio sources on frequencies 25 and 20MHz has been carried out.
L. Guglya, M. Ryabov, S. Panishko, A. Suharev   +3 more
doaj   +1 more source

Lightning electromagnetic emission location using arrival time differencing (LEELA): An introduction to the Met Office's next generation Very Low Frequency lightning location system

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This paper describes the Met Office's new lightning location system LEELA. A brief overview of the upgraded hardware and geolocation algorithms is given. LEELA has improved lightning detection capabilities, especially at night. When comparing LEELA to the previous ATDnet system against ground truths LEELA has 100% storm detection efficiency within 5 km
Graeme Marlton, Mike Protts, Stephen Prust, Edmund Keith Stone, Debbie O'Sullivan, Sue Twelves, Francesco Devoto, Claire Witham   +7 more
wiley   +1 more source

Exploring radio emissions from confirmed exoplanets using SKA

Frontiers in Astronomy and Space Sciences
Our understanding of magnetic fields in exoplanets remains limited compared to those within our solar system. Planets with magnetic fields emit radio signals primarily due to the Electron Cyclotron Maser Instability mechanism.
Fatemeh Bagheri, Fatemeh Bagheri, Anshuman Garga, Ramon E. Lopez   +3 more
doaj   +1 more source

Author's Reply to Comment by Greaves et al. on “Phosphine in the Venusian Atmosphere: A Strict Upper Limit From SOFIA GREAT Observations”

Geophysical Research Letters, 2023
In an attempt to understand the findings presented in the Comment by Greaves et al. (2023, https://doi.org/10.1029/2023GL103539), we followed their data analysis methodology, omitting the hot and cold‐load calibrations that are an important part of the ...
M. A. Cordiner, H. Wiesemeyer, G. L. Villanueva, I. dePater, J. Stutzki, G. Liuzzi, R. Aladro, S. B. Charnley, R. Cosentino, S. Faggi, V. Kofman, B. A. McGuire, S. N. Milam, A. Moullet, C. A. Nixon, A. E. Thelen   +15 more
doaj   +1 more source

Robotics for Crop Pollination: Recent Advances and Future Direction

Journal of Field Robotics, EarlyView.
ABSTRACT There is great interest in alternative pollination strategies for crop production in the face of climate change and perennial threats to the traditional pollination mechanisms. This review explores the potential of robotic pollination as a promising solution to these challenges affecting crop fertilization, agricultural sustainability, and ...
Ranjan Sapkota, Matthew D. Whiting, Dawood Ahmed, Manoj Karkee   +3 more
wiley   +1 more source

Geometric Characterization of LEO–GEO Inter‐Satellite Links for Bidirectional Communications

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT Incorporating geosynchronous Earth orbit (GEO) and low Earth orbit (LEO) satellites can extend communication services far beyond the reach of terrestrial infrastructure. A key enabler of such architectures is the establishment of inter‐satellite links (ISLs) between LEOs and GEOs to support bidirectional communications.
Muhammad Furqan, Lingfeng Ye, Yanming Feng   +2 more
wiley   +1 more source

A 22 GHz radio telescope [PDF]

, 1976
This thesis reports on the design, construction, testing and operation of the spectral line and continuum receivers built for the 22 GHz Radio Telescope. First results from 'the telescope were obtained and have been analysed to give an estimate of system
Mutch, Laurence Ian
core   +3 more sources

A New Image Restoration Method for MUSER

Advances in Astronomy, 2019
Solar radio images in decimeter wave range consist of many complicated components including a disk component, some bright and weak compact sources, and many diffuse features.
Wei Wang, Yihua Yan
doaj   +1 more source