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COSMICDAWN21CM

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Probing the cosmic dawn and the epoch of reionization with the history and fluct...

Probing the cosmic dawn and the epoch of reionization with the history and fluctuations of the hydrogen 21 cm line One of the frontiers being explored by astronomy today is the period between approximately 400000 years after the Big Bang, from which time we can detect the cosmic microwave background (CMB) radiation, and around one billion year... ver más

29/02/2016

UNIVERSITY COLLEGE...

300K€

Presupuesto del proyecto: 300K€

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UNIVERSITY COLLEGE LONDON No se ha especificado una descripción o un objeto social para esta compañía.

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Financiación concedida El organismo FP7 notifico la concesión del proyecto el día 2016-02-29 No tenemos la información de la convocatoria

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2 Participantes

UNIVERSITY COLLEGE LONDON

299.56K€ | Lider

UNIVERSITY COLLEGE LONDON

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Líder del proyecto

UNIVERSITY COLLEGE LONDON No se ha especificado una descripción o un objeto social para esta compañía.

Presupuesto del proyecto 300K€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto One of the frontiers being explored by astronomy today is the period between approximately 400000 years after the Big Bang, from which time we can detect the cosmic microwave background (CMB) radiation, and around one billion years after the Big Bang, when early galaxies and quasars start to become visible to current instruments, such as ALMA and the Wide Field Camera 3 on HST. The most promising observational probe of this period is the redshifted 21-cm hyperfine line of atomic hydrogen. The LOFAR telescope is now operational, and from its site in the Netherlands will be able to detect 21-cm radiation from the latter part of this period, the 'epoch of reionization' (EoR). Foreground radiation at the same frequency is several orders of magnitude more intense than the cosmological signal, however. Moreover, the data will have low signal-to-noise and be filtered through a complex instrument. As one of the core members of the LOFAR EoR key project, I have developed techniques to extract information about cosmology and reionization from the data, and applied them to synthetic EoR observations. During the fellowship, I will continue to develop and extend these methods with the help of the expertise in data analysis and novel statistical methods at UCL, begin to apply them to the real data which will start to arrive during the period of the fellowship, and use them to learn about the EoR. Other experiments are being proposed which would be able to probe earlier parts of this period, the 'dark ages' and the 'cosmic dawn'. I am a co-investigator on a satellite mission, the Dark Ages Radio Explorer (DARE), which will be proposed to NASA's 2013 Explorer program. It would take a complementary approach to LOFAR's, observing the sky-averaged 21-cm signal (rather than its fluctuations) at even lower radio frequencies, with the aim of learning about the very first stars and black holes. Analysing its data presents a different challenge, and will also require novel techniques.

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