MG15 - Talk detail |
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Participant |
Rubino-Martin, Jose Alberto | |||||||
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Institution |
Instituto Astrofisica de Canarias (IAC) - C/Via Lactea, s/n - La Laguna - Tenerife - Spain | |||||||
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Session |
CM3 |
Accepted |
Yes |
Order |
6 |
Time |
17:53 | 17' + 3' |
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Talk |
Oral abstract |
Title |
Resonant Scattering of CMB photons: A Tomographic View of the Universe from Recombination to Reionization | |||||
| Coauthors | Rubino-Martin, J.A.; Hernandez-Monteagudo, C. | |||||||
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Abstract |
Resonant scattering of CMB photons produces spectral and spatial distortions that can be used to obtain tomographic information of the Universe. On the one hand, I will discuss how the coherent scattering in neutral hydrogen lines during recombination produce frequency-dependent changes in the power spectra of CMB anisotropies, both in intensity and polarization, which could be used as an independent cosmological probe. Moreover, the same physical process during the dark ages could be used to constrain the abundance of metals in the pre-reionization Universe. However, an exquisite control on foreground contamination and inter-calibration of instrumental channels is essential to measure these features. |
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Pdf file |
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Session |
CM5 |
Accepted |
Yes |
Order |
2 |
Time |
15:45 | 30' |
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Talk |
Oral abstract |
Title |
The QUIJOTE Experiment: Project Status and First Scientific Results. | |||||
| Coauthors | Rubino-Martin, J.A.; on behalf of the QUIJOTE collaboration | |||||||
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Abstract |
I will review the current status of the QUIJOTE (Q-U-I JOint TEnerife) experiment, a project with the aim of characterising the polarisation of the Cosmic Microwave Background, and other galactic or extragalactic physical processes that emit in microwaves in the frequency range 10-42GHz, and at large angular scales (1 degree resolution). The experiment has been designed to reach the required sensitivity to detect a primordial gravitational wave component in the CMB, provided its tensor-to-scalar ratio is larger than r~0.05. QUIJOTE consists of two telescopes and three instruments which will survey a large sky area from the Teide Observatory to provide I, Q and U maps of high sensitivity. The first QUIJOTE instrument, known as Multi-Frequency Instrument (MFI), has been surveying the northern sky in four individual frequencies between 10 and 20 GHz since November 2012, providing data with an average sensitivity of 60 muK/beam in Q and U in a region of 20,000 square-degrees. The second instrument, or Thirty-GHz Instrument (TGI), and the third one, or Forty-GHz Instrument (FGI), are currently undergoing the commissioning phase. |
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Pdf file |
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