[ { "id": "authors:h948c-ymx25", "collection": "authors", "collection_id": "h948c-ymx25", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190925-085849774", "type": "publication_whitepaper", "title": "Astro2020 APC White Paper: The need for better tools to design future CMB experiments", "author": [ { "family_name": "Rocha", "given_name": "Gra\u00e7a", "orcid": "0000-0002-4150-8076", "clpid": "Rocha-G-M" }, { "family_name": "Banday", "given_name": "A. J." }, { "family_name": "Barreiro", "given_name": "R.", "orcid": "0000-0002-6139-4272", "clpid": "Barreiro-R-B" }, { "family_name": "Challinor", "given_name": "A." }, { "family_name": "G\u00f3rski", "given_name": "K. M." }, { "family_name": "Hensley", "given_name": "B." }, { "family_name": "Jaffe", "given_name": "T." }, { "family_name": "Jewell", "given_name": "J." }, { "family_name": "Keating", "given_name": "B." }, { "family_name": "Kogut", "given_name": "A." }, { "family_name": "Lawrence", "given_name": "C." }, { "family_name": "Panopoulou", "given_name": "Georgia", "orcid": "0000-0001-7482-5759", "clpid": "Panopoulou-G-V" }, { "family_name": "Partridge", "given_name": "B." }, { "family_name": "Pearson", "given_name": "Tim", "orcid": "0000-0001-5213-6231", "clpid": "Pearson-T-J" }, { "family_name": "Silk", "given_name": "J." }, { "family_name": "Steinhardt", "given_name": "P." }, { "family_name": "Whehus", "given_name": "I." }, { "family_name": "Bock", "given_name": "Jamie", "orcid": "0000-0002-5710-5212", "clpid": "Bock-J-J" }, { "family_name": "Crill", "given_name": "Brendan", "orcid": "0000-0002-4650-8518", "clpid": "Crill-B-P" }, { "family_name": "Delabrouille", "given_name": "J." }, { "family_name": "Dor\u00e9", "given_name": "Olivier", "orcid": "0000-0001-7432-2932", "clpid": "Dor\u00e9-O" }, { "family_name": "Fernandez-Cobos", "given_name": "R." }, { "family_name": "Ijjas", "given_name": "A." }, { "family_name": "Keskitalo", "given_name": "R." }, { "family_name": "Kritsuk", "given_name": "A." }, { "family_name": "Mangilli", "given_name": "A." }, { "family_name": "Moncelsi", "given_name": "Lorenzo", "orcid": "0000-0002-4242-3015", "clpid": "Moncelsi-Lorenzo" }, { "family_name": "Myers", "given_name": "S." }, { "family_name": "Steinbach", "given_name": "Bryan", "clpid": "Steinbach-B-A" }, { "family_name": "Tristram", "given_name": "M." } ], "abstract": "This white paper addresses key challenges for the design of next-decade Cosmic Microwave Background (CMB) experiments, and for assessing their capability to extract cosmological information from CMB polarization. We focus here on the challenges posed by foreground emission, CMB lensing, and instrumental systematics to detect the signal that arises from gravitational waves sourced by inflation and parameterized by r, at the level of r\u223c10^(\u22123) or lower, as proposed for future observational efforts. We argue that more accurate and robust analysis and simulation tools are required for these experiments to realize their promise. We are optimistic that the capability to simulate the joint impact of foregrounds, CMB lensing, and systematics can be developed to the level necessary to support the design of a space mission at r\u223c10^(\u22124) in a few years. We make the case here for supporting such work. Although ground-based efforts present additional challenges (e.g., atmosphere, ground pickup), which are not addressed here, they would also benefit from these improved simulation capabilities.", "doi": "10.48550/arXiv.1908.01907", "publisher": "arXiv", "publication_date": "2019-08-06" }, { "id": "authors:c0d40-pgz60", "collection": "authors", "collection_id": "c0d40-pgz60", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20191001-141424748", "type": "publication_whitepaper", "title": "CMB-S4 Decadal Survey APC White Paper", "author": [ { "family_name": "Abazajian", "given_name": "Kevork", "orcid": "0000-0001-9919-6362", "clpid": "Abazajian-K-N" }, { "family_name": "Thakur", "given_name": "Ritoban Basu", "clpid": "Thakur-R-B" }, { "family_name": "Crites", "given_name": "Abigail", "clpid": "Crites-A-T" }, { "family_name": "Hui", "given_name": "Howard", "clpid": "Hui-Howard" }, { "family_name": "Moncelsi", "given_name": "Lorenzo", "orcid": "0000-0002-4242-3015", "clpid": "Moncelsi-Lorenzo" }, { "family_name": "Schillaci", "given_name": "Alessandro", "clpid": "Schillaci-A" }, { "family_name": "Bock", "given_name": "James", "orcid": "0000-0002-5710-5212", "clpid": "Bock-J-J" } ], "abstract": "We provide an overview of the science case, instrument configuration and project plan for the next-generation ground-based cosmic microwave background experiment CMB-S4, for consideration by the 2020 Decadal Survey.", "doi": "10.48550/arXiv.1908.01062", "publication_date": "2019-07-31" }, { "id": "authors:8hmbt-75622", "collection": "authors", "collection_id": "8hmbt-75622", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190402-081757738", "type": "publication_whitepaper", "title": "Tomography of the Cosmic Dawn and Reionization Eras with Multiple Tracers", "author": [ { "family_name": "Chang", "given_name": "Tzu-Ching", "clpid": "Chang-Tzu-Ching" }, { "family_name": "Beane", "given_name": "Angus" }, { "family_name": "Dor\u00e9", "given_name": "Olivier", "orcid": "0000-0001-7432-2932", "clpid": "Dor\u00e9-O" }, { "family_name": "Lidz", "given_name": "Adam" }, { "family_name": "Mas-Ribas", "given_name": "Lluis" }, { "family_name": "Sun", "given_name": "Guochao", "orcid": "0000-0003-4070-497X", "clpid": "Sun-Guochao" }, { "family_name": "Alvarez", "given_name": "Marcelo" }, { "family_name": "Thakur", "given_name": "Ritoban Basu", "clpid": "Thakur-R-B" }, { "family_name": "Berger", "given_name": "Philippe" }, { "family_name": "Bethermin", "given_name": "Matthieu" }, { "family_name": "Bock", "given_name": "Jamie", "orcid": "0000-0002-5710-5212", "clpid": "Bock-J-J" }, { "family_name": "Bradford", "given_name": "Charles M." }, { "family_name": "Breysse", "given_name": "Patrick" }, { "family_name": "Burgarella", "given_name": "Denis" }, { "family_name": "Charmandaris", "given_name": "Vassilis", "orcid": "0000-0002-2688-1956", "clpid": "Charmandaris-V" }, { "family_name": "Cheng", "given_name": "Yun-Ting", "orcid": "0000-0002-5437-0504", "clpid": "Cheng-Yun-Ting" }, { "family_name": "Cleary", "given_name": "Kieran", "clpid": "Cleary-K-A" }, { "family_name": "Cooray", "given_name": "Asantha" }, { "family_name": "Crites", "given_name": "Abigail", "clpid": "Crites-A-T" }, { "family_name": "Ewall-Wice", "given_name": "Aaron" }, { "family_name": "Fan", "given_name": "Xiaohui" }, { "family_name": "Finkelstein", "given_name": "Steve" }, { "family_name": "Furlanetto", "given_name": "Steve" }, { "family_name": "Hewitt", "given_name": "Jacqueline" }, { "family_name": "Hunacek", "given_name": "Jonathon", "orcid": "0000-0001-7066-226X", "clpid": "Hunacek-J-R" }, { "family_name": "Korngut", "given_name": "Phil", "clpid": "Korngut-P-M" }, { "family_name": "Kovetz", "given_name": "Ely" }, { "family_name": "Hallinan", "given_name": "Gregg", "orcid": "0000-0002-7083-4049", "clpid": "Hallinan-G" }, { "family_name": "Heneka", "given_name": "Caroline" }, { "family_name": "Lagache", "given_name": "Guilaine" }, { "family_name": "Lawrence", "given_name": "Charles" }, { "family_name": "Lazio", "given_name": "Joseph" }, { "family_name": "Liu", "given_name": "Adrian" }, { "family_name": "Marrone", "given_name": "Dan" }, { "family_name": "Parsons", "given_name": "Aaron" }, { "family_name": "Readhead", "given_name": "Anthony", "orcid": "0000-0001-9152-961X", "clpid": "Readhead-A-C-S" }, { "family_name": "Rhodes", "given_name": "Jason" }, { "family_name": "Riechers", "given_name": "Dominik" }, { "family_name": "Seiffert", "given_name": "Michael" }, { "family_name": "Stacey", "given_name": "Gordon" }, { "family_name": "Visbal", "given_name": "Eli" }, { "family_name": "Wu", "given_name": "Hao-Yi" }, { "family_name": "Zemcov", "given_name": "Michael" }, { "family_name": "Zheng", "given_name": "Zheng" } ], "abstract": "The Cosmic Dawn and Reionization epochs remain a fundamental but challenging frontier of astrophysics and cosmology. We advocate a large-scale, multi-tracer approach to develop a comprehensive understanding of the physics that led to the formation and evolution of the first stars and galaxies. We highlight the line intensity mapping technique to trace the multi-phase reionization topology on large scales, and measure reionization history in detail. Besides 21cm, we advocate for Lya tomography mapping during the epoch of Wouthuysen-Field coupling as an additional probe of the cosmic dawn era.", "doi": "10.48550/arXiv.1903.11744", "publisher": "arXiv", "publication_date": "2019-03-28" }, { "id": "authors:7990k-31t52", "collection": "authors", "collection_id": "7990k-31t52", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20191002-084225513", "type": "publication_whitepaper", "title": "Opportunities for Astrophysical Science from the Inner and Outer Solar System", "author": [ { "family_name": "Zemcov", "given_name": "Michael", "orcid": "0000-0001-8253-1451", "clpid": "Zemcov-M" }, { "family_name": "Bock", "given_name": "James", "orcid": "0000-0002-5710-5212", "clpid": "Bock-J-J" }, { "family_name": "Chary", "given_name": "Ranga Ram", "orcid": "0000-0001-7583-0621", "clpid": "Chary-R-R" }, { "family_name": "Shvartzvald", "given_name": "Yossi", "orcid": "0000-0003-1525-5041", "clpid": "Shvartzvald-Y" } ], "abstract": "Astrophysical measurements away from the 1 AU orbit of Earth can enable several astrophysical science cases that are challenging or impossible to perform from Earthbound platforms, including: building a detailed understanding of the extragalactic background light throughout the electromagnetic spectrum; measurements of the properties of dust and ice in the inner and outer solar system; determinations of the mass of planets and stellar remnants far from luminous stars using gravitational microlensing; and stable time-domain astronomy. Though potentially transformative for astrophysics, opportunities to fly instrumentation capable of these measurements are rare, and a mission to the distant solar system that includes instrumentation expressly designed to perform astrophysical science, or even one primarily for a different purpose but capable of precise astronomical investigation, has not yet been flown. In this White Paper, we describe the science motivations for this kind of measurement, and advocate for future flight opportunities that permit intersectional collaboration and cooperation to make these science investigations a reality.", "doi": "10.48550/arXiv.1903.05729", "publication_date": "2019-03-13" }, { "id": "authors:1xt7h-pvp37", "collection": "authors", "collection_id": "1xt7h-pvp37", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20191001-110421553", "type": "publication_whitepaper", "title": "Cosmic Dawn and Reionization: Astrophysics in the Final Frontier", "author": [ { "family_name": "Cooray", "given_name": "Asantha", "orcid": "0000-0002-3892-0190", "clpid": "Cooray-A" }, { "family_name": "Appleton", "given_name": "Phil", "orcid": "0000-0002-7607-8766", "clpid": "Appleton-P-N" }, { "family_name": "Armus", "given_name": "Lee", "orcid": "0000-0003-3498-2973", "clpid": "Armus-L" }, { "family_name": "Bock", "given_name": "Jamie", "orcid": "0000-0002-5710-5212", "clpid": "Bock-J-J" }, { "family_name": "Chary", "given_name": "Ranga", "orcid": "0000-0001-7583-0621", "clpid": "Chary-R-R" } ], "abstract": "The cosmic dawn and epoch of reionization mark the time period in the universe when stars, galaxies, and blackhole seeds first formed and the intergalactic medium changed from neutral to an ionized one. Despite substantial progress with multi-wavelength observations, astrophysical process during this time period remain some of the least understood with large uncertainties on our existing models of galaxy, blackhole, and structure formation. This white paper outlines the current state of knowledge and anticipated scientific outcomes with ground and space-based astronomical facilities in the 2020s. We then propose a number of scientific goals and objectives for new facilities in late 2020s to mid 2030s that will lead to definitive measurements of key astrophysical processes in the epoch of reionization and cosmic dawn.", "doi": "10.48550/arXiv.1903.03629", "publication_date": "2019-03-08" } ]