the planck satellite lfi and the microwave background: importance of the 4k reference targets
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ID: 242769
2010
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Abstract
Armed with ~4K reference targets, the Planck satellite low frequency instrument (LFI) is intended to map the microwave anisotropies of the sky from the second Lagrange point, L2. Recently, the complete design and pre-flight testing of these ~4K targets has been published (Valenziano L. et al., JINST 4, 2009, T12006). The receiver chain of the LFI is based on a pseudo-correlation architecture. Consequently, the presence of a ~3K microwave background signal at L2 can be established, if the ~4K reference targets function as intended. Conversely, demonstration that the targets are unable to provide the desired emission implies that the ~3K signal cannot exist, at this location. Careful study reveals that only the second scenario can be valid. This analysis thereby provides firm evidence that the monopole of the microwave background, as initially detected by Penzias and Wilson, is being produced by the Earth itself.
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| Authors | ;Robitaille P.-M. |
| Journal | e-jurnal akuntansi |
| Year | 2010 |
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