DEGREE-SCALE OBSERVATIONS OF COSMIC MICROWAVE BACKGROUND ANISOTROPIES

被引：77
|
作者：
DEBERNARDIS, P
AQUILINI, E
BOSCALERI, A
DE PETRIS, M
DANDRETA, G
GERVASI, M
KREYSA, E
MARTINIS, L
MASI, S
PALUMBO, P
SCARAMUZZI, F
机构：
[1] MAX PLANCK INST RADIOASTRON, W-5300 BONN, GERMANY
[2] CNR, IROE, I-50127 FLORENCE, ITALY
[3] ENEA, TECRI, SP SINCROTRONE, FRASCATI, ITALY
来源：
ASTROPHYSICAL JOURNAL | 1994年 / 422卷 / 02期
关键词：
COSMIC MICROWAVE BACKGROUND; COSMOLOGY; OBSERVATIONS;
D O I：
10.1086/187205
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report the first results of a millimeter search for cosmic microwave background (CMB) anisotropies, carried out by means of a balloon experiment (ARGO 1993). The experiment has observed 63 independent sky fields in Hercules, with an angular resolution of 52' FWHM, in four photometric bands at 2.0, 1.2, 0.8, and 0.5 mm. A statistically significant sky signal has been observed above detector noise at 2.0 and 1.2 mm. The signal is spectrally consistent with CMB anisotropies, while reasonable local sources of anisotropy are excluded. For temperature fluctuations with a coherence angle of theta(c) = 30' we get 1.4 x 10(-5) < DELTAT/T < 3.0 x 10(-5) (90% confidence interval, calibration error included). The data are also compared to theoretical models and are found to be in agreement with the CMB anisotropy detected by COBE.
引用
收藏
页码：L33 / L36
页数：4
相关论文
共 50 条
  • [1] Gaussianity of degree-scale cosmic microwave background anisotropy observations
    Park, CG
    Park, C
    Ratra, B
    Tegmark, M
    [J]. ASTROPHYSICAL JOURNAL, 2001, 556 (02): : 582 - 589
  • [2] A degree-scale measurement of the anisotropy in the cosmic microwave background
    Wollack, E
    Jarosik, N
    Netterfield, B
    Page, L
    Wilkinson, D
    [J]. ASTROPHYSICAL LETTERS & COMMUNICATIONS, 1995, 32 (1-6) : 217 - 222
  • [3] The impact of atmospheric fluctuations on degree-scale imaging of the cosmic microwave background
    Lay, OP
    Halverson, NW
    [J]. ASTROPHYSICAL JOURNAL, 2000, 543 (02): : 787 - 798
  • [4] DEGREE-SCALE ANISOTROPY IN THE COSMIC MICROWAVE BACKGROUND - SP94 RESULTS
    GUNDERSEN, JO
    LIM, M
    STAREN, J
    WUENSCHE, CA
    FIGUEIREDO, N
    GAIER, TC
    KOCH, T
    MEINHOLD, PR
    SEIFFERT, MD
    COOK, G
    SEGALE, A
    LUBIN, PM
    [J]. ASTROPHYSICAL JOURNAL, 1995, 443 (02): : L57 - L60
  • [5] A DEGREE-SCALE MEASUREMENT OF ANISOTROPY OF THE COSMIC BACKGROUND-RADIATION
    GAIER, T
    SCHUSTER, J
    GUNDERSEN, J
    KOCH, T
    SEIFFERT, M
    MEINHOLD, P
    LUBIN, P
    [J]. ASTROPHYSICAL JOURNAL, 1992, 398 (01): : L1 - L4
  • [6] Observations of primary and secondary anisotropies in the cosmic microwave background
    Lasenby, AN
    Hobson, MP
    [J]. CURRENT TOPICS IN ASTROFUNDAMENTAL PHYSICS, 5TH COURSE, 1997, : 485 - 515
  • [7] COLD DARK MATTER AND DEGREE-SCALE COSMIC MICROWAVE BACKGROUND ANISOTROPY STATISTICS AFTER COBE
    GORSKI, KM
    STOMPOR, R
    JUSZKIEWICZ, R
    [J]. ASTROPHYSICAL JOURNAL, 1993, 410 (01): : L1 - &
  • [8] Cosmic microwave background anisotropies
    Hu, W
    Dodelson, S
    [J]. ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, 2002, 40 : 171 - 216
  • [9] ANISOTROPIES IN THE COSMIC MICROWAVE BACKGROUND
    WHITE, M
    SCOTT, D
    SILK, J
    [J]. ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, 1994, 32 : 319 - 370
  • [10] Anisotropies of the cosmic microwave background
    M. Bersanelli
    D. Maino
    A. Mennella
    [J]. La Rivista del Nuovo Cimento, 2002, 25 (9) : 1 - 82
12345