Solar Observations by the LOFAR Stations
A special issue of Galaxies (ISSN 2075-4434).
Deadline for manuscript submissions: closed (31 August 2020) | Viewed by 316
Special Issue Editors
Interests: space weather; ionosphere; magnetosphere; satellite geodesy; LOFAR
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Dear Colleagues,
LOFAR, the Low-Frequency Array (see: http://www.lofar.org/), is a radio interferometer composed of over 50 stations located across Europe. It covers the low frequency range from 10 to 240 MHz and is designed for research on various objects and phenomena in the Universe, including solar and space weather studies.
With the use of multiple stations, the LOFAR telescope can provide images of the Sun in interferometric and high-resolution dynamic spectra modes. We can also observe the Sun using a single station. In this case, we receive a dynamic spectra with a much lower time and frequency resolution. However, in comparison with similar instruments, LOFAR’s high sensitivity and wide band make this instrument one of the best for low frequencies observations. The LOFAR frequency range approximately corresponds to a radial distance between 1 and 3 solar radii in the corona.
The first solar observations with the LOFAR telescope indicate that it is well-suited for low-frequency solar research and can bring about some interesting observations and discoveries on the occurrence of solar radio bursts in the corona. These observations can be used in conjunction with other wavelengths to determine various events occurring on the Sun. It will also help us to observe solar active events that have a direct influence on the near-Earth space weather, good knowledge and prediction of which is of essential importance for our ever increasing dependence on space technology and for our increasing presence in space.
Prof. Dr. Andrzej Krankowski
Dr. Bartosz Dąbrowski
Guest Editors
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Keywords
- LOFAR
- space weather
- the Sun
- low-frequency solar research
- solar active events
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