A Measurement of the CMB Spectrum from the 2003 Flight

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: ¼ 82N5, decl: ¼ 45 . 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 hEEi signal
in the range 201 < l < 1000 with a significance of 4.8 , a 2 upper limit of 8.6 K2 for any hBBi contribution,
and a 2 upper limit of 7.0 K2 for the hEBi spectrum. Estimates of foreground intensity fluctuations and the nondetection
of hBBi and hEBi 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.

Barkats, D., et al. 2005, ApJ, 619, L127
Benoıˆt, A., et al. 2004, A&A, 424, 571
Bernardi, G., Carretti, E., Cortiglioni, S., Sault, R. J., Kesteven, M. J., & Poppi,
S. 2003, ApJ, 594, L5
Bond, J. R., Contaldi, C. R., & Pogosyan, D. 2003, Philos. Trans. R. Soc.
London A, 361, 2435
Bond, J. R., & Efstathiou, G. 1984, ApJ, 285, L45
Bond, J. R., Jaffe, A. H., & Knox, L. 1998, Phys. Rev. D, 57, 2117
———. 2000, ApJ, 533, 19
Bucher, M., Moodley, K., & Turok, N. 2001, Phys. Rev. Lett., 87, 191301
Carretti, E., et al. 2006, MNRAS, 367, 132
Challinor, A., & Chon, G. 2005, MNRAS, 360, 509
Chon, G., Challinor, A., Hivon, E., Prunet, S., & Szapudi, I. 2004, MNRAS,
350, 914
Crill, B. P., et al. 2003, ApJS, 148, 527
Crittenden, R., Davis, R. L., & Steinhardt, P. J. 1993, ApJ, 417, L13
de Oliveira-Costa, A. 2005, in ASP Conf. Ser. 343, Astronomical Polarimetry:
Current Status and Future Directions, ed. A. Adamson, C. Aspin, & C. J.
Davis (San Fancisco: ASP), 485
Enqvist, K., & Kurki-Suonio, H. 2000, Phys. Rev. D, 61, 043002
Fosalba, P., Lazarian, A., Prunet, S., & Tauber, J. A. 2002, in AIP Conf. Proc.
609, Astrophysical Polarized Backgrounds, ed. S. Cecchini et al. (San Fransisco:
ASP), 44
Frigo, M., & Johnson, S. G. 2005, IEEE Proc., 93, 216
Go´rski, K.M.,Hivon,E., Banday,A. J.,Wandelt, B. D.,Hansen, F. K.,Reinecke,M.,
& Bartelmann, M. 2005, ApJ, 622, 759
Hivon, E., Go´rski, K.M., Netterfield, C. B., Crill, B. P., Prunet, S., & Hansen, F.
2002, ApJ, 567, 2
Hu, W. 2002, Phys. Rev. D, 65, 023003
Jones ,W. C., Bhatia, R. S., Bock, J. J.,&Lange,A. E. 2003, Proc. SPIE, 4855, 227
Jones, W. C., et al. 2006a, ApJ, 647, 823
———. 2006b, A&A, submitted (astro-ph/0606606)
Kamionkowski, M., Kosowsky, A., & Stebbins, A. 1997, Phys. Rev. D, 55,
7368
Kaplinghat, M., Knox, L., & Song, Y.-S. 2003, Phys. Rev. Lett., 91, 241301
Knox, L. 1999, Phys. Rev. D, 60, 103516
Kogut, A., et al. 2003, ApJS, 148, 161
Kovac, J. M., Leitch, E. M., Pryke, C., Carlstrom, J. E., Halverson, N. W., &
Holzapfel, W. L. 2002, Nature, 420, 772
Leitch, E., et al. 2005, ApJ, 624, 10
MacTavish, C., et al. 2006, ApJ, 647, 799
Masi, S., et al. 2006, A&A, submitted (astro-ph /0507509)
Netterfield, C. B., et al. 2002, ApJ, 571, 604
Piacentini, F., et al. 2002, ApJS, 138, 315
———. 2006, ApJ, 647, 833
Pogosian, L., Vachaspati, T., & Winitzki, S. 2002, Phys. Rev. D, 65, 083502
Polnarev, A. G. 1985, Soviet Astron, 29, 607
Ponthieu, N., et al. 2005, A&A, 444, 327
Readhead, A. C. S., et al. 2004, Science, 306, 836
Rees, M. J. 1968, ApJ, 153, L1
Ruhl, J. E., et al. 2003, ApJ, 599, 786
Schlegel, D. J., Finkbeiner, D. P., & Davis, M. 1998, ApJ, 500, 525
Seljak, U., & Zaldarriaga, M. 1997, Phys. Rev. Lett., 78, 2054
Seljak, U., et al. 2005, Phys. Rev. D, 71, 103515
Spergel, D. N., et al. 2003, ApJS, 148, 175
Tucci, M., Martinez-Gonzalez, E., Vielva, P., & Delabrouille, J. 2005, MNRAS,
360, 935
Turner, M. S., & White, M. 1996, Phys. Rev. D, 53, 6822
Wright, E. L. 1987, ApJ, 320, 818
Zaldarriaga, M., & Seljak, U. 1997, Phys. Rev. D, 55, 1830