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SUMMARY:Dark energy with HIRAX 21cm intensity mapping
DTSTART:20191009T170000
DTEND:20191009T180000
DTSTAMP:20260527T103205Z
UID:ed689e03f7a8ce914c81317da2e76080450d9a8f0356d4e472931764
CATEGORIES:Conferences - Seminars
DESCRIPTION:Kavilan Moodley\nObservations of redshifted 21-cm emission of 
 neutral hydrogen over a wide range of radio frequencies allow us to access
  redshifts that encompass a vast comoving volume\, including the  era of 
 dark energy. In this talk I will present the Hydrogen Intensity Mapping an
 d Real time Analysis eXperiment (HIRAX) project\, which is a proposed 21cm
  intensity mapping experiment operating at 400-800 MHz that will measure t
 he evolution of dark energy over the redshift range z=0.8-2.5 by using the
  characteristic baryonic acoustic oscillation scale as a standard ruler. T
 he HIRAX radio telescope array will be sited in the radio-quiet Karoo astr
 onomy reserve in South Africa and will ultimately comprise 1024 dishes\, e
 ach six metres in diameter\, placed in a compact configuration. I will dis
 cuss the design and project status of HIRAX and its scientific prospects. 
 This includes dark energy forecasts as well as prospects for interesting c
 osmological constraints from cross-correlations of HIRAX data  with other
  large-area\, southern-sky cosmological surveys. HIRAX will also discover 
 a large number of pulsars and transients including fast radio bursts (FRBs
 ). I will describe our programme to localise these FRBs using HIRAX outrig
 gers in African partner countries.\n\nKavilan Moodley is Professor of Cosm
 ology at the University of KwaZulu-Natal in Durban\, South Africa. Moodley
 ’s research deals with theoretical and observational cosmology. Moodley 
 has made important contributions to the Atacama Cosmology Telescope projec
 t and is presently the PI of the HIRAX experiment\, an upcoming 1024 eleme
 nt interferometric array to be based in the Karoo Desert in South Africa. 
 HIRAX will map out the acceleration of the Universe\, discover numerous ne
 w pulsars\, and help characterize and localize fast radio bursts.\n 
LOCATION:BC 420 https://plan.epfl.ch/?room==BC%20420
STATUS:CONFIRMED
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