Results 21 to 30 of about 11,729,249 (285)
Low Frequency Radio Astronomy from the Moon [PDF]
Highlights of Astronomy, 1998 AbstractThe radio sky at frequencies of several MHz and below is essentially unexplored with high angular resolution due to refraction and opacity in the Earth’s ionosphere. An interferometer array in space providing arcminute resolution images would allow a wide range of problems in solar, planetary, galactic, and extragalactic astronomy to be ...
D.L. Jones, K.W. Weiler
openaire +1 more source
Technology Advances for Radio Astronomy [PDF]
, 2013 The field of radio astronomy continues to provide fundamental contributions to the understanding of the evolution, and inner workings of, our universe.
Russell, Damon Stuart
core +1 more source
Revisiting Hybrid Interferometry With Low-Frequency Radio Astronomy Arrays [PDF]
IEEE Transactions on Antennas and Propagation, 2017 Radio interferometry most commonly involves antennas or antenna arrays of identical design. The identical antenna assumption leads to a convenient and useful mathematical simplification resulting in a scalar problem. An interesting variant to this is a "hybrid" interferometer involving two designs.
Adrian T. Sutinjo +5 more
openaire +3 more sources
Importance of Spectrum Management in Radio Astronomy
, 2022 Publisher Copyright: © 2022 J. Kallunki et al., published by Sciendo.The increasing terrestrial and space-borne communications are causing major problems to the radio astronomy observations.
Madkour, W. +7 more
core +1 more source
CREATION AND APPROBATION OF A LOW-FREQUENCY RADIO ASTRONOMY ANTENNA FOR STUDIES OF OBJECTS OF THE UNIVERSE FROM THE MOON'S FARSIDE [PDF]
Radio Physics and Radio Astronomy, 2021 Purpose: Theoretical and experimental studies of the active antenna – an element of the low-frequency radio telescope antenna array for the future observatory on the farside of the Moon.
I. N. Bubnov +5 more
doaj +1 more source
Low Frequency Planetary Radio Astronomy [PDF]
Symposium - International Astronomical Union, 2002 This paper reviews planetary radio astronomy at low frequencies. At least at frequencies observable from the Earth's surface, this field has been almost solely the study of Jovian magnetospheric emissions. With the discovery of extra-solar planets, and the potential for new telescopes with large collecting areas, we may well see more objects and ...
openaire +1 more source
Radio Physics and Radio Astronomy, 2019 Purpose: The abstract presentation and review of the works of the last 40 years in the field of low-frequency radio astronomy and a summary of their main scientific and technical results, which have been awarded the State Prize of Ukraine in the field of
O. O. Konovalenko +7 more
doaj +1 more source
The Radio Astronomy Explorer Satellite, a Low‐Frequency Observatory [PDF]
Radio Science, 1971 The Radio Astronomy Explorer satellite (RAE‐1) is the first spacecraft designed exclusively for radio astronomical studies. It is a small, but relatively complex, observatory including two 229‐meter antennas, several radiometer systems covering a frequency range of 0.2 to 9.2 MHz, and a variety of supporting experiments such as antenna impedance probes
R. R. Weber +2 more
openaire +1 more source
Universe, 2023 The discovery of diffuse radio emission in galaxy clusters proved the existence of energetic cosmic-ray electrons and cosmic magnetic fields on Mpc-scales in the Universe.
Denis Wittor
doaj +1 more source
INTERSTELLAR MEDIUM AND DECAMETER RADIO SPECTROSCOPY [PDF]
Radio Physics and Radio Astronomy, 2021 Purpose: The analytical review of the main results of research in the new direction of the low-frequency radio astronomy, the interstellar medium radio spectroscopy at decameter waves, which had led to astrophysical discovery, recording of the radio ...
S. V. Stepkin +3 more
doaj +1 more source