The Simons Observatory: The Large Aperture Telescope (LAT)

Xu, Zhilei; Adachi, S.; Ade, Peter A. R.; Beall, James A.; Bhandarkar, Tanay; Bond, J. Richard; Chesmore, Grace E.; Chinone, Yuji; Choi, Steve K.; Connors, J.; Coppi, Gabriele; Cothard, Nicholas F.; Crowley, Kevin D.; Devlin, Mark J.; Dicker, Simon; Dober, Bradley; Duff, Shannon M.; Galitzki, Nicholas; Gallardo, Patricio A.; Golec, Joseph E.; Gudmundsson, J. E.; Haridas, Saianeesh K.; Harrington, Kathleen; Hervías-Caimapo, Carlos; Ho, Shuay-Pwu Patty; Huber, Zachary B.; Hubmayr, Johannes; Iuliano, Jeffrey; Kaneko, Daisuke; Kofman, Anna M.; Koopman, Brian J.; Lashner, Jack; Limon, M.; Link, Michael J.; Lucas, Tammy J.; Matsuda, Frederick; McCarrick, Heather; Nati, F.; Niemack, Michael D.; Orlowski-Scherer, John; Piccirillo, L.; Sarmiento, Karen Perez; Schaan, Emmanuel; Silva-Feaver, Maximiliano; Sonka, Rita; Sutariya, Shreya; Tajima, O.; Teply, G. P.; Terasaki, Tomoki; Thornton, Robert J.; Tucker, C.; Ullom, Joel N.; Vavagiakis, Eve M.; Vissers, Michael; Walker, Samantha; Whipps, Zachary; Wollack, Edward J.; Zannoni, M.; Zhu, Ningfeng; Zonca, A.

doi:10.3847/2515-5172/abf9ab

Cited by 19 publications

(11 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The observatory will include one 6 m large-aperture telescope (LAT, Xu et al 2021;Parshley et al 2018) and three small-aperture 0.5 m telescopes (SATs, Ali et al 2020). The LAT will produce temperature and polarisation maps of the CMB with ∼arcminute resolution over 40% of the sky, with a sensitivity of ∼6 µK•arcmin when combining 90 and 150 GHz bands.…”

Section: Simons Observatorymentioning

confidence: 99%

Cosmology from Clustering, Cosmic Shear, CMB Lensing, and Cross Correlations: Combining Rubin Observatory and Simons Observatory

Fang,

Eifler,

Schaan

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

In the near future, the overlap of the Rubin Observatory Legacy Survey of Space and Time (LSST) and the Simons Observatory (SO) will present an ideal opportunity for joint cosmological dataset analyses. In this paper we simulate the joint likelihood analysis of these two experiments using six two-point functions derived from galaxy position, galaxy shear, and CMB lensing convergence fields. Our analysis focuses on realistic noise and systematics models and we find that the dark energy Figure-of-Merit (FoM) increases by 53% (92%) from LSST-only to LSST+SO in Year 1 (Year 6). We also investigate the benefits of using the same galaxy sample for both clustering and lensing analyses, and find the choice improves the overall signal-to-noise by ∼ 30 − 40%, which significantly improves the photo-z calibration and mildly improves the cosmological constraints. Finally, we explore the effects of catastrophic photo-z outliers finding that they cause significant parameter biases when ignored. We develop a new mitigation approach termed "island model", which corrects a large fraction of the biases with only a few parameters while preserving the constraining power.

show abstract

Section: Simons Observatorymentioning

confidence: 99%

Cosmology from Clustering, Cosmic Shear, CMB Lensing, and Cross Correlations: Combining Rubin Observatory and Simons Observatory

Fang,

Eifler,

Schaan

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…SO will have three 0.5 m telescopes and one 6 m aperture telescope. The Large Aperture Telescope (LAT; Gudmundsson et al 2021;Xu et al 2021) will map 40% of the sky in six frequency bands (27,39,93,145,225,and 280 GHz) and angular resolution from ∼7 4-0 9. The LAT 225 GHz band has a projected sensitivity improvement of over three in temperature and over four in polarization when compared to the Planck 217 GHz band (SO19, Planck Collaboration I 2020).…”

Section: Introductionmentioning

confidence: 99%

The Simons Observatory: Galactic Science Goals and Forecasts

Hensley

Clark

Fanfani

et al. 2022

ApJ

Self Cite

View full text Add to dashboard Cite

Observing in six frequency bands from 27 to 280 GHz over a large sky area, the Simons Observatory (SO) is poised to address many questions in Galactic astrophysics in addition to its principal cosmological goals. In this work, we provide quantitative forecasts on astrophysical parameters of interest for a range of Galactic science cases. We find that SO can: constrain the frequency spectrum of polarized dust emission at a level of Δβ d ≲ 0.01 and thus test models of dust composition that predict that β d in polarization differs from that measured in total intensity; measure the correlation coefficient between polarized dust and synchrotron emission with a factor of two greater precision than current constraints; exclude the nonexistence of exo-Oort clouds at roughly 2.9σ if the true fraction is similar to the detection rate of giant planets; map more than 850 molecular clouds with at least 50 independent polarization measurements at 1 pc resolution; detect or place upper limits on the polarization fractions of CO(2–1) emission and anomalous microwave emission at the 0.1% level in select regions; and measure the correlation coefficient between optical starlight polarization and microwave polarized dust emission in 1° patches for all lines of sight with N H ≳ 2 × 1020 cm−2. The goals and forecasts outlined here provide a roadmap for other microwave polarization experiments to expand their scientific scope via Milky Way astrophysics. 37 37 A supplement describing author contributions to this paper can be found at https://simonsobservatory.org/wp-content/uploads/2022/02/SO_GS_Contributions.pdf.

show abstract

“…Ongoing and forthcoming wide extra-galactic surveys, from the lowest to the highest frequencies, will provide complete and pure galaxy cluster samples up to high redshifts and down to low masses. These surveys include the Kilo Degree Survey 1 (KiDS, de Jong et al 2017;Kuijken et al 2019) (Amendola et al 2018;Euclid Collaboration et al 2019Scaramella et al 2021) in the optical and near-infrared, the South Pole Telescope 5 (Bayliss et al 2016;Chown et al 2018), the Atacama Cosmology Telescope 6 (Naess et al 2020;Orlowski-Scherer et al 2021), and the Simons Observatory 7 (Ade et al 2019;Xu et al 2021) surveys at high-radio frequencies, and eROSITA 8 (Brunner et al 2022;Liu et al 2022) in X-rays.…”

Section: Introductionmentioning

confidence: 99%

AMICO galaxy clusters in KiDS-DR3: Constraints on cosmological parameters and on the normalisation of the mass-richness relation from clustering

Lesci

Nanni

Marulli

et al. 2022

A&A

View full text Add to dashboard Cite

Aims. We analysed the clustering of a photometric sample of galaxy clusters selected from the Third Data Release of the Kilo-Degree Survey, focusing on the redshift-space two-point correlation function (2PCF). We compared our measurements to theoretical predictions of the standard Λ cold dark matter (ΛCDM) cosmological model. Methods. We measured the 2PCF of the sample in the cluster-centric radial range r ∈ [5, 80] h −1 Mpc, considering 4934 galaxy clusters with richness λ * ≥ 15 in the redshift range z ∈ [0.1, 0.6]. A Markov chain Monte Carlo analysis has been performed to constrain the cosmological parameters Ω m , σ 8 , and S 8 ≡ σ 8 (Ω m /0.3) 0.5 , assuming Gaussian priors on the mass-richness relation given by the posteriors obtained from a joint analysis of cluster counts and weak lensing. In addition, we constrained the normalisation of the mass-richness relation, α, with fixed cosmological parameters. Results. We obtained Ω m = 0.28 +0.05 −0.04 , σ 8 = 0.82 +0.14 −0.12 , and S 8 = 0.80 +0.08 −0.08 . The constraint on S 8 is consistent within 1σ with the results from WMAP and Planck. Furthermore, by fixing the cosmological parameters to those provided by Planck, we obtained α = 0.12 +0.06 −0.06 , which is fully consistent with the result obtained from the joint analysis of cluster counts and weak lensing performed for this sample.

show abstract

The Simons Observatory: The Large Aperture Telescope (LAT)

Cited by 19 publications

References 5 publications

Cosmology from Clustering, Cosmic Shear, CMB Lensing, and Cross Correlations: Combining Rubin Observatory and Simons Observatory

Cosmology from Clustering, Cosmic Shear, CMB Lensing, and Cross Correlations: Combining Rubin Observatory and Simons Observatory

The Simons Observatory: Galactic Science Goals and Forecasts

AMICO galaxy clusters in KiDS-DR3: Constraints on cosmological parameters and on the normalisation of the mass-richness relation from clustering

Contact Info

Product

Resources

About