Interference detection results with LOFAR

Author

Offringa, A.R. ; de Bruyn, A.G.

Author_Institution

Kapteyn Astron. Inst., Univ. of Groningen, Groningen, Netherlands

fYear

2011

fDate

13-20 Aug. 2011

Firstpage

1

Lastpage

4

Abstract

With the help of new interference detection strategies, the LOFAR radio environment is being analysed. The "AOFlagger" is the default LOFAR interference detector, and is a completely automated pipeline. This dagger was extensively tested on LOFAR data, and it was shown that it is faster and more accurate than other existing flaggers on LOFAR data. Early results of the epoch of reionisation (EoR) project also confirm the stability of the AOFlagger. Statistics of the first LOFAR EoR data show a relatively benign radio environment for astronomy, where only a few per cent of the data is flagged due to interference. An interference monitoring observation was recorded to make an inventory on the current interference situation of LOFAR.

Keywords

radioastronomical techniques; radioastronomy; radiofrequency interference; radiotelescopes; radiowave interferometry; AOFlagger; LOFAR interference detector; LOFAR radio environment; LOFAR telescope; interference monitoring observation; radio astronomy; reionisation epoch; Antennas; Calibration; Correlators; Imaging; Interference; Pipelines; Time frequency analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

General Assembly and Scientific Symposium, 2011 XXXth URSI

Conference_Location

Istanbul

Print_ISBN

978-1-4244-5117-3

Type

conf

DOI

10.1109/URSIGASS.2011.6051249

Filename

6051249