Setup of the LOFAR-LBA beamformed observations.
|Array setup||LOFAR Core|
|Number of stations||24|
|Beams||ON & 2 OFF|
|Configuration||LBA outer antennas|
|Antennas per station||48|
|Minimum frequency||26 (a) or 15 (b)||MHz|
|Maximum frequency||74 (a) or 62 (b)||MHz|
|Channels per subband||64|
|Frequency resolution (b)||3.05||kHz|
|Time resolution (τ)||10.5||msec|
|Beam diameter (c)||13.8||arcmin|
|Raw sensitivity (ΔS) (d)||208||Jy|
Notes. (a) Frequency range for the 55 Cnc observations. (b)Frequency range for the υ And and τ Boo observations. (c) Calculated at 30 MHz (van Haarlem et al. 2013). (d)Raw sensitivity of a pixel in the dynamic spectrum, calculated using , with Ssys the system equivalent flux density (SEFD) of one LOFAR Core station (40 kJy; van Haarlem et al. 2013), N the number of stations summed, npol is the number of polarizations (2), b the frequency resolution, and τ the time resolution.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.