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MeerKLASS: MeerKAT Large Area Synoptic Survey
Mario G. Santos,Michelle E. Cluver,Matt Hilton,Matt J. Jarvis,Gyula I. G. Józsa,Lerothodi Leonard Leeuw,Oleg Smirnov,Russ Taylor,Filipe B. Abdalla,Jose Afonso,David Alonso,David Bacon,Bruce A. Bassett,Gianni Bernardi,Philip Bull,Stefano Camera,H. Cynthia Chiang,S. Colafrancesco,Pedro G. Ferreira,José Fonseca,Kurt van der Heyden,Ian Heywood,Kenda Knowles,Michelle Lochner,Yin-Zhe Ma,Roy Maartens,S. Makhathini,Kavilan Moodley,Alkistis Pourtsidou,Matthew Prescott,Jonathan Sievers,Kristine Spekkens,Mattia Vaccari,Amanda Weltman,I. H. Whittam,Amadeus Witzemann,Laura Wolz,Jonathan T. L. Zwart +37 more
TLDR
The MeerKLASS (MeerKAT Large Area Synoptic Survey) as mentioned in this paper is a large-scale survey of the sky that uses the Meer-KAT telescope.Abstract:
We discuss the ground-breaking science that will be possible with a wide area survey, using the MeerKAT telescope, known as MeerKLASS (MeerKAT Large Area Synoptic Survey). The current specifications of MeerKAT make it a great fit for science applications that require large survey speeds but not necessarily high angular resolutions. In particular, for cosmology, a large survey over $\sim 4,000 \, {\rm deg}^2$ for $\sim 4,000$ hours will potentially provide the first ever measurements of the baryon acoustic oscillations using the 21cm intensity mapping technique, with enough accuracy to impose constraints on the nature of dark energy. The combination with multi-wavelength data will give unique additional information, such as exquisite constraints on primordial non-Gaussianity using the multi-tracer technique, as well as a better handle on foregrounds and systematics. Such a wide survey with MeerKAT is also a great match for HI galaxy studies, providing unrivalled statistics in the pre-SKA era for galaxies resolved in the HI emission line beyond local structures at z > 0.01. It will also produce a large continuum galaxy sample down to a depth of about 5\,$\mu$Jy in L-band, which is quite unique over such large areas and will allow studies of the large-scale structure of the Universe out to high redshifts, complementing the galaxy HI survey to form a transformational multi-wavelength approach to study galaxy dynamics and evolution. Finally, the same survey will supply unique information for a range of other science applications, including a large statistical investigation of galaxy clusters as well as produce a rotation measure map across a huge swathe of the sky. The MeerKLASS survey will be a crucial step on the road to using SKA1-MID for cosmological applications and other commensal surveys, as described in the top priority SKA key science projects (abridged).read more
Citations
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The effect of finite halo size on the clustering of neutral hydrogen
TL;DR: In this paper, the effect of exclusion due to the finite halo size on the spectral line of neutral hydrogen (HI) resident in dark matter haloes is investigated, with the physical boundary of the host halo given by the splashback radius.
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Galaxy number counts at second order: an independent approach
TL;DR: In this paper, the relativistic galaxy number counts to second order in cosmological perturbation theory were derived for the angular diameter distance and for the volume spanned by a survey.
Journal ArticleDOI
The effect of finite halo size on the clustering of neutral hydrogen.
TL;DR: In this article, the effect of exclusion due to the finite halo size on the spectral line of neutral hydrogen (HI) resident in dark matter haloes is investigated, with the physical boundary of the host halo given by the splashback radius.
Journal ArticleDOI
Testing gravity with gravitational waves × electromagnetic probes cross-correlations
TL;DR: In this paper , the cross-correlation of resolved GW and EM signals from the Intensity Mapping of the neutral hydrogen distribution and resolved galaxies from the SKA Observatory is studied.
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Probing primordial non-Gaussianity with the power spectrum and bispectrum of future 21cm intensity maps
TL;DR: In this article, the authors investigate the constraints attainable from single-dish surveys operating in single-spectral mode, using the combined power spectrum and bispectrum signal, and find that single-dimensional surveys typically outperform interferometer surveys.
References
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