Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Ceccotti, E"'
Autor:
Brackenhoff, S. A., Mevius, M., Koopmans, L. V. E., Offringa, A., Ceccotti, E., Chege, J. K., Gehlot, B. K., Ghosh, S., Höfer, C., Mertens, F. G., Munshi, S., Zaroubi, S.
The turbulent ionosphere causes phase shifts to incoming radio waves on a broad range of temporal and spatial scales. When an interferometer is not sufficiently calibrated for the direction-dependent ionospheric effects, the time-varying phase shifts
Externí odkaz:
http://arxiv.org/abs/2407.20220
Autor:
Chege, J. K., Koopmans, L. V. E., Offringa, A. R., Gehlot, B. K., Brackenhoff, S. A., Ceccotti, E., Ghosh, S., Höfer, C., Mertens, F. G., Mevius, M., Munshi, S.
Current radio interferometers output multi-petabyte-scale volumes of data per year making the storage, transfer, and processing of this data a sizeable challenge. This challenge is expected to grow with the next-generation telescopes such as the Squa
Externí odkaz:
http://arxiv.org/abs/2407.11557
Autor:
Munshi, S., Mertens, F. G., Koopmans, L. V. E., Offringa, A. R., Ceccotti, E., Brackenhoff, S. A., Chege, J. K., Gehlot, B. K., Ghosh, S., Höfer, C., Mevius, M.
One of the main obstacles preventing the detection of the redshifted 21-cm signal from neutral hydrogen in the early Universe is the astrophysical foreground emission, which is several orders of magnitude brighter than the signal. The foregrounds, du
Externí odkaz:
http://arxiv.org/abs/2407.10686
Autor:
Munshi, S., Mertens, F. G., Koopmans, L. V. E., Offringa, A. R., Semelin, B., Aubert, D., Barkana, R., Bracco, A., Brackenhoff, S. A., Cecconi, B., Ceccotti, E., Corbel, S., Fialkov, A., Gehlot, B. K., Ghara, R., Girard, J. N., Grießmeier, J. M., Höfer, C., Hothi, I., Mériot, R., Mevius, M., Ocvirk, P., Shaw, A. K., Theureau, G., Yatawatta, S., Zarka, P., Zaroubi, S.
Publikováno v:
A&A 681, A62 (2024)
The redshifted 21 cm signal from neutral hydrogen is a direct probe of the physics of the early universe and has been an important science driver of many present and upcoming radio interferometers. In this study we use a single night of observations
Externí odkaz:
http://arxiv.org/abs/2311.05364
Autor:
Gehlot, B. K., Koopmans, L. V. E., Brackenhoff, S. A., Ceccotti, E., Ghosh, S., Höfer, C., Mertens, F. G., Mevius, M., Munshi, S., Offringa, A. R., Pandey, V. N., Rowlinson, A., Shulevski, A., Wijers, R. A. M. J., Yatawatta, S., Zaroubi, S.
Publikováno v:
A&A 681, A71 (2024)
Measurement of the redshifted 21-cm signal of neutral hydrogen from the Cosmic Dawn (CD) and Epoch of Reionisation (EoR) promises to unveil a wealth of information about the astrophysical processes during the first billion years of evolution of the u
Externí odkaz:
http://arxiv.org/abs/2311.03023
Autor:
Ceccotti, E., Offringa, A. R., Koopmans, L. V. E., Timmerman, R., Brackenhoff, S. A., Gehlot, B. K., Mertens, F. G., Munshi, S., Pandey, V. N., van Weeren, R. J., Yatawatta, S., Zaroubi, S.
We present a new method, called "forced-spectrum fitting", for physically-based spectral modelling of radio sources during deconvolution. This improves upon current common deconvolution fitting methods, which often produce inaccurate spectra. Our met
Externí odkaz:
http://arxiv.org/abs/2308.07306
Autor:
Gan, H., Mertens, F. G., Koopmans, L. V. E., Offringa, A. R., Mevius, M., Pandey, V. N., Brackenhoff, S. A., Ceccotti, E., Ciardi, B., Gehlot, B. K., Ghara, R., Giri, S. K., Iliev, I. T., Munshi, S.
Publikováno v:
A&A 669, A20 (2023)
Detecting the 21-cm signal from the Epoch of Reionisation (EoR) is challenging due to the strong astrophysical foregrounds, ionospheric effects, radio frequency interference and instrumental effects. Understanding and calibrating these effects are cr
Externí odkaz:
http://arxiv.org/abs/2209.07854
Autor:
Soto-Cruz, F.J., Pérez-Moreno, S.M., Ceccotti, E., Barba-Lobo, A., Bolívar, J.P., Casas-Ruiz, M., Gázquez, M.J.
Publikováno v:
In Heliyon 15 May 2024 10(9)
Autor:
Brackenhoff, S A, Mevius, M, Koopmans, L V E, Offringa, A, Ceccotti, E, Chege, J K, Gehlot, B K, Ghosh, S, Höfer, C, Mertens, F G, Munshi, S, Zaroubi, S
Publikováno v:
Monthly Notices of the Royal Astronomical Society; Sep2024, Vol. 533 Issue 1, p632-656, 25p
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