Measurement of a Peak in the Cosmic Microwave Background Power Spectrum from the North American Test Flight of Boomerang

• Published in: The Astrophysical journal Vol. 536; no. 2; pp. L59 - L62
• Main Authors: Mauskopf, P. D, Ade, P. A. R, de Bernardis, P, Bock, J. J, Borrill, J, Boscaleri, A, Crill, B. P, DeGasperis, G, De Troia, G, Farese, P, Ferreira, P. G, Ganga, K, Giacometti, M, Hanany, S, Hristov, V. V, Iacoangeli, A, Jaffe, A. H, Lange, A. E, Lee, A. T, Masi, S, Melchiorri, A, Melchiorri, F, Miglio, L, Montroy, T, Netterfield, C. B, Pascale, E, Piacentini, F, Richards, P. L, Romeo, G, Ruhl, J. E, Scannapieco, E, Scaramuzzi, F, Stompor, R, Vittorio, N
• Format: Journal Article
• Language: English
• Published: United States IOP Publishing 20-06-2000; American Astronomical Society
• Subjects: Astrophysics; Cosmology and Extra-Galactic Astrophysics; Physics
• ISSN: 1538-4357; 0004-637X; 1538-4357
• DOI: 10.1086/312743

We describe a measurement of the angular power spectrum of anisotropies in the cosmic microwave background (CMB) at scales of 0 3 to 5 degrees from the North American test flight of the Boomerang experiment. Boomerang is a balloon-borne telescope with a bolometric receiver designed to map CMB anisotropies on a long-duration balloon flight. During a 6 hr test flight of a prototype system in 1997, we mapped more than 200 deg(2) at high Galactic latitudes in two bands centered at 90 and 150 GHz with a resolution of 26 and 16 5 FWHM, respectively. Analysis of the maps gives a power spectrum with a peak at angular scales of 1 degrees with an amplitude 70 µK(CMB).