ABSTRACT LOFAR, the Low-Frequency Array, is a powerful new radio telescope operating
between 10 and 240 MHz. LOFAR allows detailed sensitive high-resolution studies of the …

The LOw Frequency ARray (LOFAR will observe at 20-200 MHz. At those frequencies, large
ionospheric phase variations distort the observed brightness distribution. Fortunately, the …

Context. The LOw Frequency ARray (LOFAR) is the only radio telescope that is presently
capable of high-sensitivity, high-resolution (ie< 1 mJy beam− 1 and< 15 ″) observations at …

The Low Frequency Array (LOFAR) is an ideal instrument to conduct deep extragalactic
surveys. It has a large field of view and is sensitive to large-scale and compact emission. It …

Context. The Low Frequency Array (LOFAR) is the only existing radio interferometer able to
observe at ultra-low frequencies (< 100 MHz) with high resolution (< 15") and high sensitivity …

Context. New generation low-frequency telescopes are exploring a new parameter space in
terms of depth and resolution. The data taken with these interferometers, for example with …

Aims. This paper discusses the spectral occupancy for performing radio astronomy with the
Low-Frequency Array (LOFAR), with a focus on imaging observations. Methods. We have …

The LOFAR Two-metre Sky Survey (LoTSS) will cover the full northern sky and, additionally,
aims to observe the LoTSS deep fields to a noise level of≲ 10 μJy beam− 1 over several …

LOFAR, the LOw-Frequency ARray, is a new-generation radio interferometer constructed in
the north of the Netherlands and across europe. Utilizing a novel phased-array design …

We present the first wide area (19 deg2), deep (≈ 120–150 μJy beam− 1), high-resolution
(5.6× 7.4 arcsec) LOFAR High Band Antenna image of the Boötes field made at 130–169 …