We report measurements of the CMB polarization power spectra from the 2003 January Antarctic flight of BOOMERANG. The primary results come from 6 days of observation of a patch covering 0.22% of the sky centered near R.A.=82.5d, decl.=-45deg. The observations were made using four pairs of polarization-sensitive bolometers operating in bands centered at 145 GHz. Using two independent analysis pipelines, we measure a nonzero <EE> signal in the range 201<l<1000 with a significance of 4.8 ?, a 2 ? upper limit of 8.6 ?K2 for any <BB> contribution, and a 2 ? upper limit of 7.0 ?K2 for the <EB> spectrum. Estimates of foreground intensity fluctuations and the nondetection of <BB> and <EB> signals rule out any significant contribution from Galactic foregrounds. The results are consistent with a ?CDM cosmology seeded by adiabatic perturbations. We note that this is the first detection of CMB polarization with bolometric detectors.
A Measurement of the CMB Spectrum from the 2003 Flight of BOOMERANG / T. E., Montroy; P. A. R., Ade; J. J., Bock; J. R., Bond; J., Borrill; A., Boscaleri; Cabella, Paolo; C. R., Contaldi; B. P., Crill; DE BERNARDIS, Paolo; G., DE GASPERIS; A., DE OLIVEIRA COSTA; DE TROIA, Grazia; G., DI STEFANO; E., Hivon; A. H., Jaffe; T. S., Kisner; W. C., Jones; A. E., Lange; Masi, Silvia; P. D., Mauskopf; C. J., Mactavish; Melchiorri, Alessandro; P., Natoli; C. B., Netterfield; Pascale, Enzo; Piacentini, Francesco; D., Pogosyan; Polenta, Gianluca; S., Prunet; Ricciardi, Sara; G., Romeo; J. E., Ruhl; P., Santini; M., Tegmark; Veneziani, Marcella; N., Vittorio. - In: THE ASTROPHYSICAL JOURNAL. - ISSN 0004-637X. - STAMPA. - Volume 647, Issue 2:(2006), pp. 813-822. [10.1086/505560]
A Measurement of the CMB Spectrum from the 2003 Flight of BOOMERANG.
CABELLA, PAOLO;DE BERNARDIS, Paolo;G. DE GASPERIS;DE TROIA, Grazia;MASI, Silvia;MELCHIORRI, Alessandro;PASCALE, ENZO;PIACENTINI, Francesco;POLENTA, GIANLUCA;RICCIARDI, Sara;VENEZIANI, MARCELLA;
2006
Abstract
We report measurements of the CMB polarization power spectra from the 2003 January Antarctic flight of BOOMERANG. The primary results come from 6 days of observation of a patch covering 0.22% of the sky centered near R.A.=82.5d, decl.=-45deg. The observations were made using four pairs of polarization-sensitive bolometers operating in bands centered at 145 GHz. Using two independent analysis pipelines, we measure a nonzeroI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
