A measurement of Ω from the North American test flight of Boomerang

被引：166

作者：

Melchiorri, A ^{[1
]}

Ade, PAR

de Bernardis, P

Bock, JJ

Borrill, J

Boscaleri, A

Crill, BP

De Troia, G

Farese, P

Ferreira, PG

Ganga, K

de Gasperis, G

Giacometti, M

Hristov, VV

Jaffe, AH

Lange, AE

Masi, S

Mauskopf, PD

Miglio, L

Netterfield, CB

Pascale, E

Piacentini, F

Romeo, G

Ruhl, JE

Vittorio, N

机构：

[1] Univ Roma La Sapienza, Dipartimento Fis, Rome, Italy

[2] Univ Roma Tor Vergata, Dipartimento Fis, I-00173 Rome, Italy

[3] Univ Geneva, Dept Phys Theor, CH-1211 Geneva, Switzerland

[4] Queen Mary Univ London, London E1 4NS, England

[5] CALTECH, Pasadena, CA 91125 USA

[6] Jet Prop Lab, Pasadena, CA USA

[7] Univ Calif Berkeley, Ctr Particle Astrophys, Berkeley, CA 94720 USA

[8] Lawrence Berkeley Lab, Natl Energy Res Sci Comp Ctr, Berkeley, CA USA

[9] CNR, Ist Ric Onde Elettromagneitche, Florence, Italy

[10] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA

[11] Inst Super Tecn, Ctr Multidisciplinar Astrofis, Lisbon, Portugal

[12] CERN, Div Theory, European Lab Particle Phys, CH-1211 Geneva, Switzerland

[13] Coll France, F-75231 Paris 05, France

[14] Univ Massachusetts, Dept Phys & Astron, Amherst, MA USA

[15] Univ Toronto, Dept Phys, Toronto, ON, Canada

[16] Univ Toronto, Dept Astron, Toronto, ON, Canada

[17] Ist Nazl Geofis, I-00161 Rome, Italy

来源：

ASTROPHYSICAL JOURNAL | 2000年 / 536卷 / 02期

基金：

美国国家科学基金会;

关键词：

cosmic microwave background; dark matter; methods : data analysis;

D O I：

10.1086/312744

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We use the angular power spectrum of the cosmic microwave background, measured during the North American test flight of the Boomerang experiment, to constrain the geometry of the universe. Within the class of cold dark matter models, we find that the overall fractional energy density of the universe Omega is constrained to be 0.85 less than or equal to Omega less than or equal to 1.25 at the 68% confidence level. Combined with the COBE measurement, the data on degree scales from the Microwave Anisotropy Telescope in Chile, and the high-redshift supernovae data, we obtain new constraints on the fractional matter density and the cosmological constant.

引用

页码：L63 / L66

页数：4

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