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000874406 005__ 20210130004652.0
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000874406 037__ $$aFZJ-2020-01416
000874406 041__ $$aEnglish
000874406 1001_ $$0P:(DE-HGF)0$$aDrabent, Alexander$$b0
000874406 1112_ $$aNIC Symposium 2020$$cJülich$$d2020-02-27 - 2020-02-28$$wGermany
000874406 245__ $$aRealising the LOFAR Two-Metre Sky Survey
000874406 260__ $$aJülich$$bForschungszentrum Jülich GmbH Zentralbibliothek, Verlag$$c2020
000874406 29510 $$aNIC Symposium 2020
000874406 300__ $$a113 - 122
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000874406 3367_ $$0PUB:(DE-HGF)7$$2PUB:(DE-HGF)$$aContribution to a book$$mcontb
000874406 4900_ $$aPublication Series of the John von Neumann Institute for Computing (NIC) NIC Series$$v50
000874406 520__ $$aThe new generation of high-resolution broad-band radio telescopes, like the Low Frequency Array (LOFAR), produces, depending on the level of compression, between 1 to 10 TB of data per hour after correlation. Such a large amount of scientific data demand powerful computing resources and efficient data handling strategies to be mastered. The LOFAR Two-metre Sky Survey (LoTSS) is a Key Science Project (KSP) of the LOFAR telescope. It aims to map the entire northern hemisphere at unprecedented sensitivity and resolution. The survey consist of 3 168 pointings, requiring about 30 PBytes of storage space. As a member of the German Long Wavelength Consortium (GLOW) the Forschungszentrum Jülich (FZJ) stores in the Long Term Archive (LTA) about 50% of all LoTSS observations conducted to date. In collaboration with SURFsara in Amsterdam we developed service tools that enables the KSP to process LOFAR data stored in the LTA at the Jülich Supercomputing Centre (JSC) in an automated and robust fashion. Through our system more than 500 out of 800 existing LoTSS observationshave already been processed with the prefactor pipeline. This pipeline calibrates the direction-independent instrumental and ionospheric effects and furthermore reduces the data size significantly. For continuum imaging, this processing pipeline is the standard pipeline that is executed before more advanced processing and image reconstruction methods are applied.
000874406 536__ $$0G:(DE-HGF)POF3-513$$a513 - Supercomputer Facility (POF3-513)$$cPOF3-513$$fPOF III$$x0
000874406 7001_ $$0P:(DE-HGF)0$$aHoeft, Matthias$$b1$$eCorresponding author
000874406 7001_ $$0P:(DE-HGF)0$$aMechev, Alex B.$$b2
000874406 7001_ $$0P:(DE-HGF)0$$aOonk, J. B. Raymond$$b3
000874406 7001_ $$0P:(DE-HGF)0$$aShimwell, Timothy W.$$b4
000874406 7001_ $$0P:(DE-HGF)0$$aSweijen, Frits$$b5
000874406 7001_ $$0P:(DE-HGF)0$$aDanezi, Anatoli$$b6
000874406 7001_ $$0P:(DE-HGF)0$$aSchrijvers, Coen$$b7
000874406 7001_ $$0P:(DE-Juel1)132183$$aManzano, Cristina$$b8
000874406 7001_ $$0P:(DE-Juel1)167207$$aTsigenov, Oleg$$b9
000874406 7001_ $$0P:(DE-HGF)0$$aDettmar, Ralf-Jürgen$$b10
000874406 7001_ $$0P:(DE-HGF)0$$aBrüggen, Marcus$$b11
000874406 7001_ $$0P:(DE-HGF)0$$aSchwarz, Dominik J.$$b12
000874406 7870_ $$0FZJ-2020-01353$$iIsPartOf
000874406 8564_ $$uhttps://juser.fz-juelich.de/record/874406/files/NIC_2020_Schwarz.pdf$$yOpenAccess
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000874406 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$aThüringer Landessternwarte$$b0
000874406 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$aThüringer Landessternwarte$$b1
000874406 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$aLeiden University$$b2
000874406 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$aLeiden University$$b3
000874406 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$aASTRON$$b3
000874406 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$aSURFsara$$b3
000874406 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$aLeiden University$$b4
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000874406 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$aLeiden University$$b5
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000874406 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$aRuhr-Universität Bochum$$b10
000874406 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$aHamburger Sternwarte$$b11
000874406 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$aUniversität Bielefeld$$b12
000874406 9131_ $$0G:(DE-HGF)POF3-513$$1G:(DE-HGF)POF3-510$$2G:(DE-HGF)POF3-500$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$aDE-HGF$$bKey Technologies$$lSupercomputing & Big Data$$vSupercomputer Facility$$x0
000874406 9141_ $$y2020
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000874406 9201_ $$0I:(DE-Juel1)NIC-20090406$$kNIC$$lJohn von Neumann - Institut für Computing$$x0
000874406 9201_ $$0I:(DE-Juel1)JSC-20090406$$kJSC$$lJülich Supercomputing Center$$x1
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