Zobrazeno 1 - 10
of 12 789
pro vyhledávání: '"A Anstey"'
The precise measurement of the sky-averaged HI absorption signal between 50 and 200 MHz is the primary goal of global 21-cm cosmology. This measurement has the potential to unravel the underlying physics of cosmic structure formation and evolution du
Externí odkaz:
http://arxiv.org/abs/2412.02552
Autor:
O'Hara, Oscar S. D., Gueuning, Quentin, Acedo, Eloy de Lera, Dulwich, Fred, Cumner, John, Anstey, Dominic, Brown, Anthony, Fialkov, Anastasia, Dhandha, Jiten, Faulkner, Andrew, Liu, Yuchen
We investigate the impact of Mutual Coupling (MC) between antennas on the time-delay power spectrum response of the core of the SKA-Low radio telescope. Using two in-house tools - Fast Array Simulation Tool (FAST) (a fast full-wave electromagnetic so
Externí odkaz:
http://arxiv.org/abs/2412.01699
Autor:
Pattison, Joe H. N., Cavillot, Jean, Bevins, Harry T. J., Anstey, Dominic J., Acedo, Eloy de Lera
The redshifted 21 cm line of cosmic atomic hydrogen is one of the most auspicious tools in deciphering the early Universe. Recovering this signal remains an ongoing problem for cosmologists in the field, with the signal being hidden behind foreground
Externí odkaz:
http://arxiv.org/abs/2408.06012
Publikováno v:
MNRAS 534 (2024) 1317
Contribution of resolved and unresolved extragalactic point sources to the low-frequency sky spectrum is a potentially non-negligible part of the astrophysical foregrounds for cosmic dawn 21-cm experiments. The clustering of such point sources on the
Externí odkaz:
http://arxiv.org/abs/2406.17031
Autor:
The DEAP Collaboration, Adhikari, P., Alpízar-Venegas, M., Amaudruz, P. -A., Anstey, J., Auty, D. J., Batygov, M., Beltran, B., Bina, C. E., Bonivento, W., Boulay, M. G., Bueno, J. F., Cai, B., Cárdenas-Montes, M., Choudhary, S., Cleveland, B. T., Crampton, R., Daugherty, S., DelGobbo, P., Di Stefano, P., Dolganov, G., Doria, L., Duncan, F. A., Dunford, M., Ellingwood, E., Erlandson, A., Farahani, S. S., Fatemighomi, N., Fiorillo, G., Ford, R. J., Gahan, D., Gallacher, D., Abia, P. García, Garg, S., Giampa, P., Giménez-Alcázar, A., Goeldi, D., Gorel, P., Graham, K., Hallin, A. L., Hamstra, M., Haskins, S., Hu, J., Hucker, J., Hugues, T., Ilyasov, A., Jigmeddorj, B., Jillings, C. J., Kaur, G., Yazdi, M. Khoshraftar, Kemp, A., Kuźniak, M., La Zia, F., Lai, M., Langrock, S., Lehnert, B., Levashko, N., Lissia, M., Luzzi, L., Machulin, I., Maru, A., Mason, J., McDonald, A. B., McElroy, T., McLaughlin, J. B., Mielnichuk, C., Mirasola, L., Moharana, A., Monroe, J., Murray, A., Ng, C., Oliviéro, G., Olszewski, M., Pal, S., Papi, D., Park, B., Perry, M., Pesudo, V., Pollmann, T. R., Rad, F., Rethmeier, C., Retière, F., Roszkowski, L., Santorelli, R., Schuckman II, F. G., Seth, S., Shalamova, V., Skensved, P., Smirnova, T., Sobotkiewich, K., Sonley, T., Sosiak, J., Soukup, J., Stainforth, R., Stringer, M., Tang, J., Vázquez-Jáuregui, E., Viel, S., Vyas, B., Walczak, M., Walding, J., Ward, M., Westerdale, S., Wormington, R.
The knowledge of scintillation quenching of $\alpha$-particles plays a paramount role in understanding $\alpha$-induced backgrounds and improving the sensitivity of liquid argon-based direct detection of dark matter experiments. We performed a relati
Externí odkaz:
http://arxiv.org/abs/2406.18597
Autor:
O'Hara, Oscar Sage David, Dulwich, Fred, Acedo, Eloy de Lera, Dhandha, Jiten, Gessey-Jones, Thomas, Anstey, Dominic, Fialkov, Anastasia
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 533, Issue 3, September 2024, Pages 2876-2892
The Cosmic Dawn was marked by the formation of the first stars, and preceded the Epoch of Reionization (EoR), when the Universe underwent a fundamental transformation caused by the radiation from these first stars and galaxies. Interferometric 21-cm
Externí odkaz:
http://arxiv.org/abs/2402.04008
Global 21-cm experiments are built to study the evolution of the Universe between the cosmic dawn and the epoch of reionisation. FlexKnot is a function parameterised by freely moving knots stringed together by splines. Adopting the FlexKnot function
Externí odkaz:
http://arxiv.org/abs/2311.14537
Autor:
Pape, Dave, Anstey, Josephine, Bogucki, Mike, Dawe, Greg, DeFanti, Tom, Johnson, Andy, Sandin, Dan
In this paper we discuss the design and implementation of a plasma display panel for a wide field of view desktop virtual reality environment. Present commercial plasma displays are not designed with virtual reality in mind, leading to several proble
Externí odkaz:
http://arxiv.org/abs/2311.12037
As part of the iGrid Research Demonstration at INET 2000, we created two Virtual Cultural Heritage environments - "Virtual Harlem" and "Shared Miletus". The purpose of these applications was to explore possibilities in using the combination of high-s
Externí odkaz:
http://arxiv.org/abs/2311.10303
Radio observations of the neutral hydrogen signal from the Cosmic Dawn and Epoch of Reionisation have helped to provide constraints on the properties of the first stars and galaxies. Since this global 21-cm cosmological signal from the Cosmic Dawn is
Externí odkaz:
http://arxiv.org/abs/2310.17975