Effects of destriping errors on cosmic microwave background polarization power spectra and pixel noise covariances
Effects of destriping errors on cosmic microwave background polarization power spectra and pixel noise covariances
复制标题
去条纹误差对宇宙微波背景偏振功率谱和像素噪声协方差的影响
DOI:
10.1111/j.1365-2966.2007.12201.x
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发表时间:
2007
影响因子:
4.8
通讯作者:
Efstathiou G
中科院分区:
文献类型:
--
作者:
Efstathiou G
Low frequency detector noise in CMB experiments must be corrected to produce faithful maps of the temperature and polarization anisotropies. For a Planck-type experiment the low frequency noise corrections lead to residual stripes in the maps. Here I show that for a ring torus and idealised detector geometry it is possible to calculate analytically the effects of destriping errors on the temperature and polarization power spectra. It is also possible to compute the pixel-pixel noise covariances for maps of arbitrary resolution. The analytic model is compared to numerical simulations using a realistic detector and scanning geometries. We show that Planck polarization maps at 143 GHz should be signal dominated on large scales. Destriping errors are the dominant source of noise for the temperature and polarization power spectra at multipoles ell < 10. A fast Monte-Carlo method for characterising noise, including destriping errors, is described that can be applied to Planck. This Monte-Carlo method can be used to quantify pixel-pixel noise covariances and to remove noise biases in power spectrum estimates.
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DOI:
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发表时间:
2006
期刊:
影响因子:
--
作者:
L. Porta;C. Burigana;W. Reich;P. Reich
通讯作者:
P. Reich
DOI:
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发表时间:
1999
期刊:
影响因子:
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作者:
B. Revenu;A. Kim;R. Ansari;F. Couchot;J. Delabrouille;J. Kaplan
通讯作者:
J. Kaplan
DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
D. Otero;M. Colás;F. Gutierrez;J. G. Campos;E. Osuna;J. Marín;J. Gómez
通讯作者:
J. Gómez
DOI:
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发表时间:
1999
期刊:
影响因子:
--
作者:
D. Maino;C. Burigana;M. Maltoni;B. Wandelt;K. Gorski;M. Malaspina;M. Bersanelli;N. Mandolesi;A. Banday;E. Hivon
通讯作者:
E. Hivon
DOI:
10.1111/j.1365-2966.2006.10486.x
发表时间:
2006-07
影响因子:
4.8
作者:
G. Efstathiou
通讯作者:
G. Efstathiou