The brightness and spatial distributions of terrestrial radio sources

Autor: Offringa, A. R., de Bruyn, A. G., Zaroubi, S., Koopmans, L. V. E., Wijnholds, S. J., Abdalla, F. B., Brouw, W. N., Ciardi, B., Iliev, I. T., Harker, G. J. A., Mellema, G., Bernardi, G., Zarka, P., Ghosh, A., Alexov, A., Anderson, J., Asgekar, A., Avruch, I. M., Beck, R., Bell, M. E., Bell, M. R., Bentum, M. J., Best, P., Bîrzan, L., Breitling, F., Broderick, J., Brüggen, M., Butcher, H. R., de Gasperin, F., de Geus, E., de Vos, M., Duscha, S., Eislöffel, J., Fallows, R. A., Ferrari, C., Frieswijk, W., Garrett, M. A., Grießmeier, J., Hassall, T. E., Horneffer, A., Iacobelli, M., Juette, E., Karastergiou, A., Klijn, W., Kondratiev, V. I., Kuniyoshi, M., Kuper, G., van Leeuwen, J., Loose, M., Maat, P., Macario, G., Mann, G., McKean, J. P., Meulman, H., Norden, M. J., Orru, E., Paas, H., Pandey-Pommier, M., Pizzo, R., Polatidis, A. G., Rafferty, D., Reich, W., van Nieuwpoort, R., Röttgering, H., Scaife, A. M. M., Sluman, J., Smirnov, O., Sobey, C., Tagger, M., Tang, Y., Tasse, C., ter Veen, S., Toribio, C., Vermeulen, R., Vocks, C., van Weeren, R. J., Wise, M. W., Wucknitz, O.

Faint undetected sources of radio-frequency interference (RFI) might become visible in long radio observations when they are consistently present over time. Thereby, they might obstruct the detection of the weak astronomical signals of interest. This

Externí odkaz: http://arxiv.org/abs/1307.5580

LOFAR insights into the epoch of reionization from the cross power spectrum of 21cm emission and galaxies

Autor: Wiersma, R. P. C., Ciardi, B., Thomas, R. M., Harker, G. J. A., Zaroubi, S., Bernardi, G., Brentjens, M., de Bruyn, A. G., Daiboo, S., Jelic, V., Kazemi, S., Koopmans, L. V. E., Labropoulos, P., Martinez, O., Mellema, G., Offringa, A., Pandey, V. N., Schaye, J., Veligatla, V., Vedantham, H., Yatawatta, S.

Using a combination of N-body simulations, semi-analytic models and radiative transfer calculations, we have estimated the theoretical cross power spectrum between galaxies and the 21cm emission from neutral hydrogen during the epoch of reionization.

Externí odkaz: http://arxiv.org/abs/1209.5727

Probing the First Stars and Black Holes in the Early Universe with the Dark Ages Radio Explorer (DARE)

Autor: Burns, Jack O., Lazio, T. J. W., Bale, S. D., Bowman, J. D., Bradley, R. F., Carilli, C. L., Furlanetto, S. R., Harker, G. J. A., Loeb, A., Pritchard, J. R.

A concept for a new space-based cosmology mission called the Dark Ages Radio Explore (DARE) is presented in this paper. DARE's science objectives include (1) When did the first stars form? (2) When did the first accreting black holes form? (3) When d

Externí odkaz: http://arxiv.org/abs/1106.5194

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Simulating the 21 cm forest detectable with LOFAR and SKA in the spectra of high-z GRBs.

Autor: Ciardi, B., Inoue, S., Abdalla, F. B., Asad, K., Bernardi, G., Bolton, J. S., Brentjens, M., de Bruyn, A. G., Chapman, E., Daiboo, S., Fernandez, E. R., Ghosh, A., Graziani, L., Harker, G. J. A., Iliev, I. T., Jelić, V., Jensen, H., Kazemi, S., Koopmans, L. V. E., Martinez, O.

Publikováno v: Monthly Notices of the Royal Astronomical Society: Letters; 10/11/2015, Vol. 453 Issue 1, p101-105, 5p