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Extracting Cosmology from High Resolution CMB Data *Focused on ACT and SO
Extracting cosmology from high resolution CMB data *focused on ACT and SO Jo Dunkley, Princeton University May 23, 2018 Jo Dunkley Cosmic Microwave Background T=2.7K ∆T/T ~0.00001 Also polarization: Rep.Two-point statistics: Prog. Phys. 81 (2018) 044901 Report on Progress TxT TxE BxB ExE Staggs, JD, Page 2018 review Figure 3. Example of recent CMB power spectra from [50–54]. Left. TT (top) and EE (bottom) data and power spectra plotted with logarithmic y axes. The TT and EE oscillations are out of phase by ∼π/2 as expected for acoustic oscillations (see section 1.4) since TT and EE trace density and velocity, respectively. The TT spectrum at low ℓ, corresponding to superhorizon scales at decoupling (see section 2.1), has post-decoupling contributions from gravitational redshifting of the photons as they pass through evolving potential wells, known as the integrated Sachs-Wolfe (ISW) effect [55, 56]. The EE spectrum peaks at higher ℓ than TT both because it lacks the ISW effect, and because the acoustic oscillation velocity gradients sourcing the polarization grow with k and thus with ℓ. The spectra are suppressed at large ℓ due to photon diffusion from smaller regions of space, also called Silk damping [57], and to geometric effects from compressing the 3d structure to 2d spectra. Right. TE with linear y axis. Since the ISW effect does not change the polarization, the negative peak at ℓ = 150 in TE confrmed that some of the largest scale features in the CMB are primordial, and not just late-time effects [58–60]. -
The Simons Observatory: Gain, Bandpass and Polarization-Angle Calibration Requirements for B-Mode Searches
Prepared for submission to JCAP The Simons Observatory: gain, bandpass and polarization-angle calibration requirements for B-mode searches Maximilian H. Abitbol,1 David Alonso,1 Sara M. Simon,2 Jack Lashner,3 Kevin T. Crowley,4 Aamir M. Ali,4 Susanna Azzoni,1 Carlo Baccigalupi,5;6;7 Darcy Barron,30 Michael L. Brown,12 Erminia Calabrese,8 Julien Carron,9 Yuji Chinone,10;11 Jens Chluba,12 Gabriele Coppi,13 Kevin D. Crowley,16 Mark Devlin,14 Jo Dunkley,15;16 Josquin Errard,17 Valentina Fanfani,13 Nicholas Galitzki,18 Martina Gerbino,31 J. Colin Hill,32;33 Bradley R. Johnson,19 Baptiste Jost,17 Brian Keating,18 Nicoletta Krachmalnicoff,5 Akito Kusaka,10;27;36;37 Adrian T. Lee,20 Thibaut Louis,21 Mathew S. Madhavacheril,38 Heather McCarrick,16 Jeffrey McMahon,22;23;24;25 P. Daniel Meerburg,26 Federico Nati,13 Haruki Nishino,10 Lyman A. Page,16 Davide Poletti,5;6;7 Giuseppe Puglisi34;35 Michael J. Randall,18 Aditya Rotti,12 Jacob Spisak,18 Aritoki Suzuki,27 Grant P. Teply,18 Clara Vergès,17 Edward J. Wollack,28 Zhilei Xu,14;29 Mario Zannoni13 1University of Oxford, Department of Physics, Denys Wilkinson Building, Keble Road, Ox- ford OX1 4LS, UK 2Fermi National Accelerator Laboratory, Batavia, IL, USA 3University of Southern California, Los Angeles, CA, USA 4University of California Berkeley, Berkeley, CA, USA 5International School for Advanced Studies (SISSA), Via Bonomea 265, 34136 Trieste, Italy 6 arXiv:2011.02449v2 [astro-ph.CO] 15 Jun 2021 Institute for Fundamental Physics of the Universe (IFPU), Via Beirut 2, 34014 Trieste, Italy 7National -
Bolocalc: a Sensitivity Calculator for the Design of Simons Observatory
BoloCalc: a sensitivity calculator for the design of Simons Observatory Charles A. Hilla,b, Sarah Marie M. Brunoc, Sara M. Simond, Aamir Alia, Kam S. Arnolde, Peter C. Ashtona,b, Darcy Barronf, Sean Bryang, Yuji Chinonea, Gabriele Coppih, Kevin T. Crowleyc, Ari Cukiermana, Simon Dickerh, Jo Dunkleyc, Giulio Fabbiani, Nicholas Galitzkie, Patricio A. Gallardoj, Jon E. Gudmundssonk, Johannes Hubmayrl, Brian Keatinge, Akito Kusakab,m, Adrian T. Leea,b,n, Frederick Matsudao, Philip D. Mauskopfp, Jeffrey McMahond, Michael D. Niemackj, Giuseppe Puglisiq, Mayuri Sathyanarayana Raob,r, Maria Salatinos, Carlos Sierrad, Suzanne Staggsc, Aritoki Suzukib, Grant Teplye, Joel N. Ulloml, Benjamin Westbrooka, Zhilei Xuh, and Ningfeng Zhuh aDepartment of Physics, University of California, Berkeley, CA 94720, USA. bPhysics Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA. cDepartment of Physics, Princeton University, Princeton, NJ 08544, USA. dDepartment of Physics, University of Michigan, Ann Arbor, MI 48109, USA. eDepartment of Physics, University of California San Diego, La Jolla, CA 19104, USA. fSpace Sciences Lab, University of California Berkeley, Berkeley, CA 94720, USA. gSchool of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, AZ 85281, USA. hDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania, PA 19104, USA. iInstitut d'Astrophysique Spatiale, CNRS (UMR 8617), Univ. Paris-Sud, Universit´e Paris-Saclay, B^at.121, 91405 Orsay, France. jDepartment of Physics, Cornell University, Ithaca, NY 14850, USA. kThe Oskar Klein Centre for Cosmoparticle Physics, Department of Physics, Stockholm University, Stockholm, Sweden. lQuantum Sensors Group, NIST, Boulder, CO 80309, USA. mDepartment of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan. nRadio Astronomy Laboratory, University of California, Berkeley, Berkeley, CA 92093, USA. -
Proceedings of Spie
PROCEEDINGS OF SPIE SPIEDigitalLibrary.org/conference-proceedings-of-spie The Simons Observatory: instrument overview Nicholas Galitzki, Aamir Ali, Kam S. Arnold, Peter C. Ashton, Jason E. Austermann, et al. Nicholas Galitzki, Aamir Ali, Kam S. Arnold, Peter C. Ashton, Jason E. Austermann, Carlo Baccigalupi, Taylor Baildon, Darcy Barron, James A. Beall, Shawn Beckman, Sarah Marie M. Bruno, Sean Bryan, Paolo G. Calisse, Grace E. Chesmore, Yuji Chinone, Steve K. Choi, Gabriele Coppi, Kevin D. Crowley, Kevin T. Crowley, Ari Cukierman, Mark J. Devlin, Simon Dicker, Bradley Dober, Shannon M. Duff, Jo Dunkley, Giulio Fabbian, Patricio A. Gallardo, Martina Gerbino, Neil Goeckner-Wald, Joseph E. Golec, Jon E. Gudmundsson, Erin E. Healy, Shawn Henderson, Charles A. Hill, Gene C. Hilton, Shuay-Pwu Patty Ho, Logan A. Howe, Johannes Hubmayr, Oliver Jeong, Brian Keating, Brian J. Koopman, Kenji Kiuchi, Akito Kusaka, Jacob Lashner, Adrian T. Lee, Yaqiong Li, Michele Limon, Marius Lungu, Frederick Matsuda, Philip D. Mauskopf, Andrew J. May, Nialh McCallum, Jeff McMahon, Federico Nati, Michael D. Niemack, John L. Orlowski-Scherer, Stephen C. Parshley, Lucio Piccirillo, Mayuri Sathyanarayana Rao, Christopher Raum, Maria Salatino, Joseph S. Seibert, Carlos Sierra, Max Silva-Feaver, Sara M. Simon, Suzanne T. Staggs, Jason R. Stevens, Aritoki Suzuki, Grant Teply, Robert Thornton, Calvin Tsai, Joel N. Ullom, Eve M. Vavagiakis, Michael R. Vissers, Benjamin Westbrook, Edward J. Wollack, Zhilei Xu, Ningfeng Zhu, "The Simons Observatory: instrument overview," Proc. SPIE 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX, 1070804 (31 July 2018); doi: 10.1117/12.2312985 Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States Downloaded From: https://www.spiedigitallibrary.org/conference-proceedings-of-spie on 13 Jun 2019 Terms of Use: https://www.spiedigitallibrary.org/terms-of-use The Simons Observatory: Instrument Overview Nicholas Galitzkia, Aamir Alib, Kam S. -
Simons Observatory and CMB-S4 Experiments (Report for the Scientific Council of IN2P3, October 2020)
Observations of polarized cosmic microwave background anisotropies from the ground: Simons Observatory and CMB-S4 experiments (Report for the Scientific Council of IN2P3, October 2020) Contents 1 Introduction2 2 Science2 3 Challenges4 4 CMB observations from the ground5 5 Simons Observatory8 5.1 Instruments and operations8 5.2 Science 10 5.3 Timeline 11 5.4 French involvement and prospects 12 6 CMB-S4 13 6.1 Instruments and operations 13 6.2 Science 14 6.3 Timeline and organization 16 6.4 French involvement and prospects 16 7 Ground and space complementarity 17 7.1 Angular scales and sky coverage 17 7.2 Frequency coverage 19 7.3 LiteBIRD vs SO and CMB-S4 20 8 Synergies between CMB and other surveys and projects 21 0Image credits: B. Benson (left); J.Groh (right) 1 Introduction Studies of Cosmic Microwave Background (CMB) anisotropies have played a prominent role in establishing modern cosmology as a high precision science area, where ques- tions fundamental to our understanding of the Universe but also basic laws of physics can be efficiently investigated and reliably answered. This progress has been driven by experimental efforts carried out from space-borne platforms, COBE, WMAP, and Planck, from stratospheric balloons, e.g., BOOMERANG, MAXIMA, Archeops, and from ground-based observatories, e.g., DASI, QUIET, POLARBEAR, ACT, SPT, BI- CEP, and combined with data delivered by supernovae, galaxy clustering, and baryonic acoustic oscillation surveys. These past efforts led to a standard model of cosmology, based on the hot Big Bang paradigm, where the Universe, initially very hot, dense, and ionized, expands and cools down adiabatically while the gravitational instability of initially minute fluctuations has led to the variety of structures we observe today. -
The Integration and Testing Program for the Simons Observatory Large Aperture Telescope Optics Tubes
The Integration and Testing Program for the Simons Observatory Large Aperture Telescope Optics Tubes Kathleen Harringtona, Carlos Sierrab, Grace Chesmoreb, Shreya Sutariyab, Aamir M. Alic, Steve K. Choi d,e, Nicholas F. Cothardf, Simon Dickerg, Nicholas Galitzkih, Shuay-Pwu Patty Hoi, Anna M. Kofmang, Brian J. Koopmanj, Jack Lashnerk, Jeff McMahona,b,l,m, Michael D. Niemackd,e, John Orlowski-Schererg, Joseph Seiberth, Max Silva-Feaverh, Eve M. Vavagiakisd, Zhilei Xug,n, and Ningfeng Zhug aDepartment of Astronomy and Astrophysics, University of Chicago, Chicago, IL, 60637, USA bDepartment of Physics, University of Chicago, Chicago, IL 60637, USA cDepartment of Physics, University of California, Berkeley, Berkeley, CA, 94720, USA dDepartment of Physics, Cornell University, Ithaca, NY 14853, USA eDepartment of Astronomy, Cornell University, Ithaca, NY 14853, USA fDepartment of Applied and Engineering Physics, Cornell University, Ithaca NY, 14853, USA gDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA, 19104, USA hDepartment of Physics, University of California, San Diego, La Jolla, CA 92093, USA iDepartment of Physics, Stanford University, Stanford, CA 94305, USA jDepartment of Physics, Yale University, New Haven, CT 06520, USA kDepartment of Physics and Astronomy, University of Southern California, Los Angeles CA, 90089, USA lKavli Institute for Cosmological Physics, University of Chicago, Chicago, IL 60637, USA mEnrico Fermi Institute, University of Chicago, Chicago, IL 60637, USA nMIT Kavli Institute, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA Dec. 15 2020 ABSTRACT The Simons Observatory (SO) will be a cosmic microwave background (CMB) survey experiment with three small-aperture telescopes and one large-aperture telescope, which will observe from the Atacama Desert in Chile. -
Enabling Discoveries: Thirty Years of Advanced Technologies and Instrumentation at the National Science Foundation
Enabling Discoveries: Thirty Years of Advanced Technologies and Instrumentation at the National Science Foundation Peter Kurczynskia,b,*, and Stasaˇ Milojevic´c aNational Science Foundation, 2415 Eisenhower Ave, Alexandria , Virginia, USA bRutgers, the State University of New Jersey, Piscataway, New Jersey, USA cCenter for Complex Networks and Systems Research, Luddy School of Informatics, Computing, and Engineering, Indiana University, Bloomington, USA Abstract. Over its more than thirty-year history, the Advanced Technologies and Instrumentation (ATI) program has provided grants to support technology development and instrumentation for ground-based astronomy. Through a combination of automated literature assessment and in-depth literature review, we present a survey of ATI-funded research and an assessment of its impact on astronomy and society. Award acknowledgement and literature citation statistics for ATI are comparable to a comparison astronomy grant program that does not support technology develop- ment. Citation statistics for both NSF-funded programs exceed those of the general astronomical literature. Numerous examples demonstrate the significant, long term impact of ATI-supported research on astronomy. As part of this im- pact, ATI grants have provided many early career researchers the opportunity to gain critical professional experience. However, technology development unfolds over a time period that is longer than an individual grant. A longitudinal perspective shows that investments in technology and instrumentation have