Experimental radio cosmology

Research group

Research theme

Sub department

About

Cosmological parameter estimation using Very Small Array data out to ℓ= 1500

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 353:3 (2004) 747-759

Authors:

Rafael Rebolo, Richard A Battye, Pedro Carreira, Kieran Cleary, Rod D Davies, Richard J Davis, Clive Dickinson, Ricardo Genova-Santos, Keith Grainge, Carlos M Gutiérrez, Yaser A Hafez, Michael P Hobson, Michael E Jones, Rüdiger Kneissl, Katy Lancaster, Anthony Lasenby, JP Leahy, Klaus Maisinger, Guy G Pooley, Nutan Rajguru, José Alberto Rubiño-Martin, Richard DE Saunders, Richard S Savage, Anna Scaife, Paul F Scott, Anže Slosar, Pedro Sosa Molina, Angela C Taylor, David Titterington, Elizabeth Waldram, Robert A Watson, Althea Wilkinson
More details from the publisher
More details
Details from ArXiV

High-sensitivity measurements of the cosmic microwave background power spectrum with the extended Very Small Array

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 353:3 (2004) 732-746

Authors:

Clive Dickinson, Richard A Battye, Pedro Carreira, Kieran Cleary, Rod D Davies, Richard J Davis, Ricardo Genova-Santos, Keith Grainge, Carlos M Gutiérrez, Yaser A Hafez, Michael P Hobson, Michael E Jones, Rüdiger Kneissl, Katy Lancaster, Anthony Lasenby, JP Leahy, Klaus Maisinger, Carolina Ödman, Guy Pooley, Nutan Rajguru, Rafael Rebolo, José Alberto Rubiño-Martin, Richard DE Saunders, Richard S Savage, Anna Scaife, Paul F Scott, Anže Slosar, Pedro Sosa Molina, Angela C Taylor, David Titterington, Elizabeth Waldram, Robert A Watson, Althea Wilkinson
More details from the publisher
More details
Details from ArXiV

Cosmological parameter estimation using Very Small Array data out to l= 1500

\mnras 353 (2004) 747-759

Authors:

R Rebolo, RA Battye, P Carreira, K Cleary, RD Davies, RJ Davis, C Dickinson, R Genova-Santos, K Grainge, CM Gutiérrez, YA Hafez, MP Hobson, ME Jones, R Kneissl, K Lancaster, A Lasenby, JP Leahy, K Maisinger, GG Pooley, N Rajguru, JA Rubi no-Martin, RDE Saunders, RS Savage, A Scaife, PF Scott, A Slosar, P Sosa Molina, AC Taylor, D Titterington, E Waldram, RA Watson, A Wilkinson
More details from the publisher
More details
Details from ArXiV

High-sensitivity measurements of the cosmic microwave background power spectrum with the extended Very Small Array

\mnras 353 (2004) 732-746

Authors:

C Dickinson, RA Battye, P Carreira, K Cleary, RD Davies, RJ Davis, R Genova-Santos, K Grainge, CM Gutiérrez, YA Hafez, MP Hobson, ME Jones, R Kneissl, K Lancaster, A Lasenby, JP Leahy, K Maisinger, C Ödman, G Pooley, N Rajguru, R Rebolo, JA Rubi no-Martin, RDE Saunders, RS Savage, A Scaife, PF Scott, A Slosar, P Sosa Molina, AC Taylor, D Titterington, E Waldram, RA Watson, A Wilkinson
More details from the publisher
More details
Details from ArXiV

Estimating the bispectrum of the Very Small Array data

Monthly Notices of the Royal Astronomical Society 352:3 (2004) 887-902

Authors:

S Smith, G Rocha, A Challinor, RA Battye, P Carreira, K Cleary, RD Davies, RJ Davis, C Dickinson, R Genova-Santos, K Grainge, CM Gutiérrez, YA Hafez, MP Hobson, ME Jones, R Kneissl, K Lancaster, A Lasenby, JP Leahy, K Maisinger, GG Pooley, N Rajguru, R Rebolo, JA Rubiño-Martin, PS Molina, RDE Saunders, RS Savage, P Scott, A Slosar, AC Taylor, D Titterington, E Waldram, RA Watson

Abstract:

We estimate the bispectrum of the Very Small Array data from the compact and extended configuration observations released in 2002 December, and compare our results with those obtained from Gaussian simulations. There is a slight excess of large bispectrum values for two individual fields, but this does not appear when the fields are combined. Given our expected level of residual point sources, we do not expect these to be the source of the discrepancy. Using the compact configuration data, we put an upper limit of 5400 on the value of F NL, the non-linear coupling parameter, at 95 per cent confidence. We test our bispectrum estimator using non-Gaussian simulations with a known bispectrum, and recover the input values.
More details from the publisher