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Statements

Subject Item: dbr:Reionization
dbo:wikiPageWikiLink: dbr:Precision_Array_for_Probing_the_Epoch_of_Reionization

Subject Item: dbr:Index_of_physics_articles_(P)
dbo:wikiPageWikiLink: dbr:Precision_Array_for_Probing_the_Epoch_of_Reionization

Subject Item: dbr:Intensity_mapping
dbo:wikiPageWikiLink: dbr:Precision_Array_for_Probing_the_Epoch_of_Reionization

Subject Item: dbr:List_of_radio_telescopes
dbo:wikiPageWikiLink: dbr:Precision_Array_for_Probing_the_Epoch_of_Reionization

Subject Item: dbr:Paper_(disambiguation)
dbo:wikiPageWikiLink: dbr:Precision_Array_for_Probing_the_Epoch_of_Reionization
dbo:wikiPageDisambiguates: dbr:Precision_Array_for_Probing_the_Epoch_of_Reionization

Subject Item: dbr:Precision_Array_for_Probing_the_Epoch_of_Reionization
rdf:type: yago:Magnifier103709206 yago:Instrument103574816 dbo:Organisation yago:PhysicalEntity100001930 yago:WikicatInterferometers yago:MeasuringInstrument103733925 yago:Telescope104403638 yago:Artifact100021939 yago:Device103183080 yago:Object100002684 yago:ScientificInstrument104147495 yago:Whole100003553 yago:Instrumentality103575240 yago:Interferometer103578981
rdfs:label: Precision Array for Probing the Epoch of Reionization
rdfs:comment: The Donald C. Backer Precision Array for Probing the Epoch of Reionization (PAPER) is a radio interferometer funded by the National Science Foundation to detect 21 cm hydrogen (HI) fluctuations occurring when the first galaxies ionized intergalactic gas at around 500 Million years after the Big Bang. PAPER is a focused experiment aimed toward making the firststatistical detection of the 21 cm reionizationsignal. Given the stringent dynamic range requirements for detectingreionization in the face of foregrounds that are five orders ofmagnitude brighter, the PAPERproject is taking a carefully staged engineering approach, optimizingeach component in the array to mitigate, at the outset, anypotentially debilitating problems in subsequent data calibration andanalysis. This staged approach addre
dct:subject: dbc:Interferometric_telescopes dbc:Radio_telescopes
dbo:wikiPageID: 33219989
dbo:wikiPageRevisionID: 955916386
dbo:wikiPageWikiLink: dbr:Square_Kilometre_Array dbr:University_of_Pennsylvania dbr:Aaron_Parsons dbr:University_of_California,_Berkeley dbr:National_Radio_Astronomy_Observatory dbc:Radio_telescopes dbc:Interferometric_telescopes dbr:Reionization dbr:Murchison_Widefield_Array dbr:Hydrogen_line dbr:Radio_Astronomy_Laboratory dbr:Donald_Backer dbr:National_Science_Foundation
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dbo:abstract: The Donald C. Backer Precision Array for Probing the Epoch of Reionization (PAPER) is a radio interferometer funded by the National Science Foundation to detect 21 cm hydrogen (HI) fluctuations occurring when the first galaxies ionized intergalactic gas at around 500 Million years after the Big Bang. PAPER is a focused experiment aimed toward making the firststatistical detection of the 21 cm reionizationsignal. Given the stringent dynamic range requirements for detectingreionization in the face of foregrounds that are five orders ofmagnitude brighter, the PAPERproject is taking a carefully staged engineering approach, optimizingeach component in the array to mitigate, at the outset, anypotentially debilitating problems in subsequent data calibration andanalysis. This staged approach addresses theobservational challenges that arise fromvery-wide-field, high-dynamic-range imaging over wide bandwidthsin the presence of transient terrestrial interference.PAPER began as a collaboration between Don Backer of the UC Berkeley Radio Astronomy Laboratory and Richard Bradley of the National Radio Astronomy Observatory. With Backer's passing in 2010, Aaron Parsons has assumed leadership of PAPER on the side of UC Berkeley. The two fundamental concerns that most influence the design of any HIreionization detection instrument are removing foregrounds andachieving the requisite sensitivity. The PAPER approach heavilyemphasizes the former; the level of instrumental calibration andforeground characterization that will be required to model and removepolarized galactic synchrotron emission, continuum point-sources, andgalactic/extra-galactic free-free emission is unprecedented in the100-200 MHz band expected to encompass reionization. PAPER consists of two distinct arrays: one located at the NRAO site in Green Bank, WV, whichis used primarily for engineering investigations and field testing, and another located at theSouth African SKA site in the Karoo desert of the Northern Cape, South Africa., which is used for science observations.
gold:hypernym: dbr:Interferometer
prov:wasDerivedFrom: wikipedia-en:Precision_Array_for_Probing_the_Epoch_of_Reionization?oldid=955916386&ns=0
dbo:wikiPageLength: 5460
foaf:isPrimaryTopicOf: wikipedia-en:Precision_Array_for_Probing_the_Epoch_of_Reionization

Subject Item: dbr:Tololo_1247-232
dbo:wikiPageWikiLink: dbr:Precision_Array_for_Probing_the_Epoch_of_Reionization

Subject Item: dbr:Dark_Ages_Radio_Explorer
dbo:wikiPageWikiLink: dbr:Precision_Array_for_Probing_the_Epoch_of_Reionization

Subject Item: dbr:Large_Aperture_Experiment_to_Detect_the_Dark_Ages
dbo:wikiPageWikiLink: dbr:Precision_Array_for_Probing_the_Epoch_of_Reionization

Subject Item: dbr:Aaron_Parsons
dbo:wikiPageWikiLink: dbr:Precision_Array_for_Probing_the_Epoch_of_Reionization

Subject Item: dbr:KAT-7
dbo:wikiPageWikiLink: dbr:Precision_Array_for_Probing_the_Epoch_of_Reionization

Subject Item: dbr:Radio_Astronomy_Laboratory
dbo:wikiPageWikiLink: dbr:Precision_Array_for_Probing_the_Epoch_of_Reionization

Subject Item: dbr:Haro_11
dbo:wikiPageWikiLink: dbr:Precision_Array_for_Probing_the_Epoch_of_Reionization

Subject Item: dbr:Hydrogen_Epoch_of_Reionization_Array
dbo:wikiPageWikiLink: dbr:Precision_Array_for_Probing_the_Epoch_of_Reionization

Subject Item: dbr:Wouthuysen–Field_coupling
dbo:wikiPageWikiLink: dbr:Precision_Array_for_Probing_the_Epoch_of_Reionization

Subject Item: dbr:Donald_C._Backer
dbo:wikiPageWikiLink: dbr:Precision_Array_for_Probing_the_Epoch_of_Reionization

Subject Item: dbr:MeerKAT
dbo:wikiPageWikiLink: dbr:Precision_Array_for_Probing_the_Epoch_of_Reionization

Subject Item: dbr:Low-Frequency_Array_(LOFAR)
dbo:wikiPageWikiLink: dbr:Precision_Array_for_Probing_the_Epoch_of_Reionization

Subject Item: wikipedia-en:Precision_Array_for_Probing_the_Epoch_of_Reionization
foaf:primaryTopic: dbr:Precision_Array_for_Probing_the_Epoch_of_Reionization