English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We present the first results in our effort to calibrate low fre qu ncy (< 300 MHz) array observations that are suffering from ionospheric phase disturbances. Th ese disturbances may vary as a function of time, frequency, antenna location and viewing direc t on, which causes the self-calibration technique to fail in many cases. The method used is a simplifie d version of the calibration scheme proposed for LOFAR. This method extrapolates the results fr om calibrations towards individual sources within the target field-of-view (the peeling scheme ) by fitting a curved phase screen model at an arbitrary height, thus allowing for higher order phase corrections across intermediate sized (∼ 10−50 km) arrays like VLA-A/B and GMRT.

Ionospheric calibration for low frequency arrays using the peeling scheme