Updated Calibration of the LOFAR Low-Band Antennas

The LOw-Frequency ARray (LOFAR) telescope measures radio emission from air showers. In order to interpret the data, an absolute, frequency dependent calibration is required. Due to a growing need for a better understanding of the measured frequency spectrum, we revisit the calibration of the LOFAR a...

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Bibliographic Details
Published inEPJ Web of Conferences Vol. 216; p. 4006
Main Authors Mulrey, K., Bonardi, A., Buitink, S., Corstanje, A., Falcke, H., Hare, B.M., Hörandel, J., Mitra, P., Nelles, A., Rachen, J.P., Rossetto, L., Schellart, P., Scholten, O., ter Veen, S., Thoudam, S., Trinh, T.N.G., Winchen, T
Format Journal Article Conference Proceeding
LanguageEnglish
Published Les Ulis EDP Sciences 01.01.2019
Subjects
Antenna arrays
Antennas
Calibration
Cosmic ray showers
Frequency spectrum
LOFAR
Radio emission
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Summary:The LOw-Frequency ARray (LOFAR) telescope measures radio emission from air showers. In order to interpret the data, an absolute, frequency dependent calibration is required. Due to a growing need for a better understanding of the measured frequency spectrum, we revisit the calibration of the LOFAR antennas in the range of 30—80 MHz. Using the galactic radio emission and a detailed model of the LOFAR signal chain, we find a calibration that provides an absolute energy scale and allows us to study frequency dependent features in measured air shower signals.
ISSN:2100-014X
2101-6275
2100-014X
DOI:10.1051/epjconf/201921604006