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Measurement of the Cosmic Microwave Background Polarization with the BICEP Telescope at the South Pole
UC Berkeley UC Berkeley Electronic Theses and Dissertations Title Measurement of the Cosmic Microwave Background Polarization with the BICEP Telescope at the South Pole Permalink https://escholarship.org/uc/item/6b98h32b Author Takahashi, Yuki David Publication Date 2010 Peer reviewed|Thesis/dissertation eScholarship.org Powered by the California Digital Library University of California Measurement of the Cosmic Microwave Background Polarization with the Bicep Telescope at the South Pole by Yuki David Takahashi A dissertation submitted in partial satisfaction of the requirements for the degree of Doctor of Philosophy in Physics in the Graduate Division of the University of California, Berkeley Committee in charge: Professor William L. Holzapfel, Chair Professor Adrian T. Lee Professor Chung-Pei Ma Fall 2010 Measurement of the Cosmic Microwave Background Polarization with the Bicep Telescope at the South Pole Copyright 2010 by Yuki David Takahashi 1 Abstract Measurement of the Cosmic Microwave Background Polarization with the Bicep Telescope at the South Pole by Yuki David Takahashi Doctor of Philosophy in Physics University of California, Berkeley Professor William L. Holzapfel, Chair The question of how exactly the universe began is the motivation for this work. Based on the discoveries of the cosmic expansion and of the cosmic microwave background (CMB) ra- diation, humans have learned of the Big Bang origin of the universe. However, what exactly happened in the first moments of the Big Bang? A scenario of initial exponential expansion called “inflation” was proposed in the 1980s, explaining several important mysteries about the universe. Inflation would have generated gravitational waves that would have left a unique imprint in the polarization of the CMB. -
Integrated Sachs Wolfe Effect and Rees Sciama Effect
Prog. Theor. Exp. Phys. 2012, 00000 (24 pages) DOI: 10.1093/ptep/0000000000 Integrated Sachs Wolfe Effect and Rees Sciama Effect Atsushi J. Nishizawa1 1 Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), The University of Tokyo, Chiba 277-8582, Japan ∗E-mail: [email protected] ............................................................................... It has been around fifty years since R. K. Sachs and A. M. Wolfe predicted the existence of anisotropy in the Cosmic Microwave Background (CMB) and ten years since the integrated Sachs Wolfe effect (ISW) was first detected observationally. The ISW effect provides us with a unique probe of the accelerating expansion of the Universe. The cross-correlation between the large-scale structure and CMB has been the most promising way to extract the ISW effect from the data. In this article, we review the physics of the ISW effect and summarize recent observational results and interpretations. ................................................................................................. Subject Index Cosmological perturbation theory, Cosmic background radiations, Dark energy and dark matter 1. Overview After the discovery of the isotropic radiation of the Cosmic Microwave Background (CMB) of the Universe by A. A. Penzias and R. W. Wilson in 1965 [100], R. K. Sachs and A. M Wolfe predict the existence of anisotropy in the CMB associated with the gravitational redshift in 1967 [116]. They fully integrate the geodesic equation in a perturbed Friedman-Robertson-Walker (FRW) metric in the fully general relativistic framework. The Sachs-Wolfe (SW) is the first paper that predicts the presence of the anisotropy in the CMB which now plays an important role for constraining cosmo- logical models, the nature of dark energy, modified gravity, and non-Gaussianity of the primordial fluctuation. -
CMB Telescopes and Optical Systems to Appear In: Planets, Stars and Stellar Systems (PSSS) Volume 1: Telescopes and Instrumentation
CMB Telescopes and Optical Systems To appear in: Planets, Stars and Stellar Systems (PSSS) Volume 1: Telescopes and Instrumentation Shaul Hanany ([email protected]) University of Minnesota, School of Physics and Astronomy, Minneapolis, MN, USA, Michael Niemack ([email protected]) National Institute of Standards and Technology and University of Colorado, Boulder, CO, USA, and Lyman Page ([email protected]) Princeton University, Department of Physics, Princeton NJ, USA. March 26, 2012 Abstract The cosmic microwave background radiation (CMB) is now firmly established as a funda- mental and essential probe of the geometry, constituents, and birth of the Universe. The CMB is a potent observable because it can be measured with precision and accuracy. Just as importantly, theoretical models of the Universe can predict the characteristics of the CMB to high accuracy, and those predictions can be directly compared to observations. There are multiple aspects associated with making a precise measurement. In this review, we focus on optical components for the instrumentation used to measure the CMB polarization and temperature anisotropy. We begin with an overview of general considerations for CMB ob- servations and discuss common concepts used in the community. We next consider a variety of alternatives available for a designer of a CMB telescope. Our discussion is guided by arXiv:1206.2402v1 [astro-ph.IM] 11 Jun 2012 the ground and balloon-based instruments that have been implemented over the years. In the same vein, we compare the arc-minute resolution Atacama Cosmology Telescope (ACT) and the South Pole Telescope (SPT). CMB interferometers are presented briefly. We con- clude with a comparison of the four CMB satellites, Relikt, COBE, WMAP, and Planck, to demonstrate a remarkable evolution in design, sensitivity, resolution, and complexity over the past thirty years. -
The Design of the Ali CMB Polarization Telescope Receiver
The design of the Ali CMB Polarization Telescope receiver M. Salatinoa,b, J.E. Austermannc, K.L. Thompsona,b, P.A.R. Aded, X. Baia,b, J.A. Beallc, D.T. Beckerc, Y. Caie, Z. Changf, D. Cheng, P. Chenh, J. Connorsc,i, J. Delabrouillej,k,e, B. Doberc, S.M. Duffc, G. Gaof, S. Ghoshe, R.C. Givhana,b, G.C. Hiltonc, B. Hul, J. Hubmayrc, E.D. Karpela,b, C.-L. Kuoa,b, H. Lif, M. Lie, S.-Y. Lif, X. Lif, Y. Lif, M. Linkc, H. Liuf,m, L. Liug, Y. Liuf, F. Luf, X. Luf, T. Lukasc, J.A.B. Matesc, J. Mathewsonn, P. Mauskopfn, J. Meinken, J.A. Montana-Lopeza,b, J. Mooren, J. Shif, A.K. Sinclairn, R. Stephensonn, W. Sunh, Y.-H. Tsengh, C. Tuckerd, J.N. Ullomc, L.R. Valec, J. van Lanenc, M.R. Vissersc, S. Walkerc,i, B. Wange, G. Wangf, J. Wango, E. Weeksn, D. Wuf, Y.-H. Wua,b, J. Xial, H. Xuf, J. Yaoo, Y. Yaog, K.W. Yoona,b, B. Yueg, H. Zhaif, A. Zhangf, Laiyu Zhangf, Le Zhango,p, P. Zhango, T. Zhangf, Xinmin Zhangf, Yifei Zhangf, Yongjie Zhangf, G.-B. Zhaog, and W. Zhaoe aStanford University, Stanford, CA 94305, USA bKavli Institute for Particle Astrophysics and Cosmology, Stanford, CA 94305, USA cNational Institute of Standards and Technology, Boulder, CO 80305, USA dCardiff University, Cardiff CF24 3AA, United Kingdom eUniversity of Science and Technology of China, Hefei 230026 fInstitute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 gNational Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 hNational Taiwan University, Taipei 10617 iUniversity of Colorado Boulder, Boulder, CO 80309, USA jIN2P3, CNRS, Laboratoire APC, Universit´ede Paris, 75013 Paris, France kIRFU, CEA, Universit´eParis-Saclay, 91191 Gif-sur-Yvette, France lBeijing Normal University, Beijing 100875 mAnhui University, Hefei 230039 nArizona State University, Tempe, AZ 85004, USA oShanghai Jiao Tong University, Shanghai 200240 pSun Yat-Sen University, Zhuhai 519082 ABSTRACT Ali CMB Polarization Telescope (AliCPT-1) is the first CMB degree-scale polarimeter to be deployed on the Tibetan plateau at 5,250 m above sea level. -
UC Berkeley UC Berkeley Electronic Theses and Dissertations
UC Berkeley UC Berkeley Electronic Theses and Dissertations Title The South Pole Telescope bolometer array and the measurement of secondary Cosmic Microwave Background anisotropy at small angular scales Permalink https://escholarship.org/uc/item/2z74c4rc Author Shirokoff, Erik D. Publication Date 2011 Peer reviewed|Thesis/dissertation eScholarship.org Powered by the California Digital Library University of California The South Pole Telescope bolometer array and the measurement of secondary Cosmic Microwave Background anisotropy at small angular scales by Erik D. Shirokoff A dissertation submitted in partial satisfaction of the requirements for the degree of Doctor of Philosophy in Physics in the Graduate Division of the University of California, Berkeley Committee in charge: Professor William Holzapfel, Chair Professor Bernard Sadoulet Professor Chung-Pei Ma Fall 2011 The South Pole Telescope bolometer array and the measurement of secondary Cosmic Microwave Background anisotropy at small angular scales Copyright 2011 by Erik D. Shirokoff 1 Abstract The South Pole Telescope bolometer array and the measurement of secondary Cosmic Microwave Background anisotropy at small angular scales by Erik D. Shirokoff Doctor of Philosophy in Physics University of California, Berkeley Professor William Holzapfel, Chair The South Pole Telescope (SPT) is a dedicated 10-meter diameter telescope optimized for mm-wavelength surveys of the Cosmic Microwave Background (CMB) with arcminute reso- lution. The first instrument deployed at SPT features a 960 element -
Cosmic Microwave Background
1 29. Cosmic Microwave Background 29. Cosmic Microwave Background Revised August 2019 by D. Scott (U. of British Columbia) and G.F. Smoot (HKUST; Paris U.; UC Berkeley; LBNL). 29.1 Introduction The energy content in electromagnetic radiation from beyond our Galaxy is dominated by the cosmic microwave background (CMB), discovered in 1965 [1]. The spectrum of the CMB is well described by a blackbody function with T = 2.7255 K. This spectral form is a main supporting pillar of the hot Big Bang model for the Universe. The lack of any observed deviations from a 7 blackbody spectrum constrains physical processes over cosmic history at redshifts z ∼< 10 (see earlier versions of this review). Currently the key CMB observable is the angular variation in temperature (or intensity) corre- lations, and to a growing extent polarization [2–4]. Since the first detection of these anisotropies by the Cosmic Background Explorer (COBE) satellite [5], there has been intense activity to map the sky at increasing levels of sensitivity and angular resolution by ground-based and balloon-borne measurements. These were joined in 2003 by the first results from NASA’s Wilkinson Microwave Anisotropy Probe (WMAP)[6], which were improved upon by analyses of data added every 2 years, culminating in the 9-year results [7]. In 2013 we had the first results [8] from the third generation CMB satellite, ESA’s Planck mission [9,10], which were enhanced by results from the 2015 Planck data release [11, 12], and then the final 2018 Planck data release [13, 14]. Additionally, CMB an- isotropies have been extended to smaller angular scales by ground-based experiments, particularly the Atacama Cosmology Telescope (ACT) [15] and the South Pole Telescope (SPT) [16]. -
Physics of the Cosmic Microwave Background Anisotropy∗
Physics of the cosmic microwave background anisotropy∗ Martin Bucher Laboratoire APC, Universit´eParis 7/CNRS B^atiment Condorcet, Case 7020 75205 Paris Cedex 13, France [email protected] and Astrophysics and Cosmology Research Unit School of Mathematics, Statistics and Computer Science University of KwaZulu-Natal Durban 4041, South Africa January 20, 2015 Abstract Observations of the cosmic microwave background (CMB), especially of its frequency spectrum and its anisotropies, both in temperature and in polarization, have played a key role in the development of modern cosmology and our understanding of the very early universe. We review the underlying physics of the CMB and how the primordial temperature and polarization anisotropies were imprinted. Possibilities for distinguish- ing competing cosmological models are emphasized. The current status of CMB ex- periments and experimental techniques with an emphasis toward future observations, particularly in polarization, is reviewed. The physics of foreground emissions, especially of polarized dust, is discussed in detail, since this area is likely to become crucial for measurements of the B modes of the CMB polarization at ever greater sensitivity. arXiv:1501.04288v1 [astro-ph.CO] 18 Jan 2015 1This article is to be published also in the book \One Hundred Years of General Relativity: From Genesis and Empirical Foundations to Gravitational Waves, Cosmology and Quantum Gravity," edited by Wei-Tou Ni (World Scientific, Singapore, 2015) as well as in Int. J. Mod. Phys. D (in press). -
Seeing Black Holes: from the Computer to the Telescope
universe Review Seeing Black Holes: From the Computer to the Telescope Jean-Pierre Luminet 1,2,3 1 Aix Marseille University, CNRS, LAM, 13013 Marseille, France; [email protected] or [email protected] 2 Aix Marseille University, CNRS, CPT, 13009 Marseille, France 3 Observatoire de Paris, CNRS, LUTH, 92195 Meudon, France Received: 7 July 2018; Accepted: 6 August 2018; Published: 9 August 2018 Abstract: Astronomical observations are about to deliver the very first telescopic image of the massive black hole lurking at the Galactic Center. The mass of data collected in one night by the Event Horizon Telescope network, exceeding everything that has ever been done in any scientific field, should provide a recomposed image in 2018. All this, forty years after the first numerical simulations performed by the present author. Keywords: black hole; numerical simulation; observation; general relativity 1. Introduction According to the laws of general relativity (for recent overviews at the turn of its centennial, see, e.g., [1,2]), black holes are, by definition, invisible. Contrary to uncollapsed stars, their surface is neither a solid nor a gas; it is an intangible frontier known as the event horizon. Beyond this horizon, gravity is so strong that nothing escapes, not even light. Seen projected onto the background of the sky, the event horizon would probably resemble a perfectly black disk if the black hole is static (Schwarzschild black hole) or a slightly flattened disk if it is rotating (Kerr black hole). A black hole however, be it small and of stellar mass or giant and supermassive, is rarely “bare”; in typical astrophysical conditions it is usually surrounded by gaseous matter. -
The Big Bang, the South Pole, and Everything
The Big Bang, the South Pole, and Everything Spectrum's Glenn Zorpette reports from Antarctica This is part of the series: Antarctica: Life on the Ice Transcript: The Big Bang, the South Pole, and Everything Glenn Zorpette: The South Pole is a great place to study origins of the universe. Here’s why. One of the main things that cosmologists do is analyze the microwave radiation that permeates the universe. That radiation is called the cosmic microwave background, and you can think of it as an echo of the big bang that launched the universe into the glorious spectacle that we see today. With its dry, stable atmosphere, the South Pole offers outstanding viewing conditions for two microwave telescopes that could unravel the deepest mysteries of the universe. [clanking/talking sounds] Glenn Zorpette: Physicist John Carlstrom of the University of Chicago leads the way up to the roof of the South Pole Telescope. It towers five stories above the powdery white snow. [clanking sound up for 1 to 2 seconds then fade] John Carlstrom: This is a 10-meter diameter—it’s actually a little larger, but 10 meters as it’s projected toward the sky—telescope for looking at radiation from the big bang, what we call the cosmic microwave background radiation. Glenn Zorpette: Carlstrom is the mastermind behind this [US] $19 million telescope. He explains that the cosmic microwave background radiation is like an echo reaching us from 13.7 billion years ago. John Carlstrom: And it allows us to take a snapshot, see what the universe was like. -
Sub-Mm VLBI from the Arctic — Imaging Black Holes
Astrophysics from Antarctica Proceedings IAU Symposium No. 288, 2012 c International Astronomical Union 2013 M. G. Burton, X. Cui & N. F. H. Tothill, eds. doi:10.1017/S1743921312016870 Sub-mm VLBI from the Arctic — Imaging Black Holes Makoto Inoue1 and the Greenland Telescope team1,2,3,4 1 Academia Sinica Institute of Astronomy and Astrophysics, P.O. Box 23-141, Taipei, 10617 Taiwan, R.O.C. email: [email protected] 2 Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138, USA 3 MIT Haystack Observatory, Off Route 40, Westford, MA 01886-1299, USA 4 National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903-4608, USA Abstract. We are deploying a new station for sub-millimeter Very Long Baseline Interferom- etry (VLBI) to obtain shadow images of Supermassive Black Hole (SMBH). Sub-mm VLBI is thought to be the only way so far to get the direct image of SMBH by its shadow, thanks to the superb angular resolution and high transparency against dense plasma around SMBH. At the Summit Station on Greenland, we have started monitoring the opacity at sub-mm region. The Summit Station subtends long baselines with the Atacama Large Milimeter/submillimeter Array (ALMA) in Chile and Submillimeter Array (SMA) in Hawaii. In parallel, we started retrofitting the ALMA North America prototype telescope (renamed as Greenland Telescope: GLT) for the cold environment. Keywords. Supermassive Black Hole (SMBH), Sub-millimeter telescope, Very Long Baseline Interferometry (VLBI) 1. Introduction An experiment in the sub-millimeter (submm) Very Long Baseline Interferometry (VLBI) has shown the capability for direct imaging of Sumermassive Black Hole (SMBH) (Doelaman et al. -
First Results from the Event Horizon Telescope
First results from the Event Horizon Telescope Dom Pesce On behalf of the Event Horizon Telescope collaboration March 10, 2020 EDSU conference The goal (ca. 2017) The goal is to take a picture of a black hole The goal (ca. 2017) Subrahmanyan Chandrasekhar The goal is to take a picture of a black hole • General relativity makes a prediction for the apparent shape of a black hole “It is conceptually interesting, if not astrophysically very important, to calculate the precise apparent shape of the black hole… Unfortunately, there seems to be no hope of observing this effect.” - James Bardeen, 1973 James Bardeen Photon ring and black hole shadow The warped spacetime around a black hole causes photon trajectories to bend event horizon b photon orbit Photon ring and black hole shadow The warped spacetime around a black hole causes photon trajectories to bend The closer these trajectories get to a critical impact parameter, the more tightly wound they become Photon ring and black hole shadow The warped spacetime around a black hole causes photon trajectories to bend The closer these trajectories get to a critical impact parameter, the more tightly wound they become Photon ring and black hole shadow The warped spacetime around a black hole causes photon trajectories to bend The closer these trajectories get to a critical impact parameter, the more tightly wound they become The trajectories interior to this critical impact parameter intersect the horizon, and these collectively form the black hole “shadow” (Falcke, Melia, & Agol 2000) while the bright surrounding region constitutes the “photon ring” Adapted from: Asada et al. -
Greenland Telescope Project --- Direct Confirmation of Black Hole with Sub-Millimeter VLBI
Greenland Telescope Project --- Direct Confirmation of Black Hole with Sub-millimeter VLBI --- Inoue, M.§; Algaba-Marcos, J.C.; Asada, K.; Chang, C.-C.; Chen, M.-T.; Han, J.; Hirashita, H.; Ho, P.T.P.; Hsieh, S.-N.; Huang, T.; Jiang, H.; Koch, P.M.; Kubo, D.Y.; Kuo, C.-Y.; Liu, B.; Martin-Cocher, P.; Matsushita, S.; Meyer-Zhao, Z.; Nakamura, M.; Nishioka, H.; Nystrom, G.; Pradel, N.; Pu, H.-Y.; Raffin, P.A.; Shen, H.-Y.; Snow, W.; Srinivasan, R.; and Wei, T.-S. Academia Sinica Institute of Astronomy and Astrophysics 11F of Astronomy-Mathematics Building, AS/NTU, No.1, Sec. 4, Roosevelt Rd, Taipei 10617, Taiwan, R.O.C. Blundell, R.; Burgos, R.; Grimes, P.; Keto, E.; Paine, S.; Patel, N.; and Sridharan, T.K. Harvard-Smithsonian Center for Astrophysics 60 Garden Street, Cambridge, MA 02138, USA Doeleman, S.S.; and Fish, V. MIT Haystack Observatory Off Route 40, Westford, MA 01886-1299, USA and Brisken, W.; and Napier, P. National Radio Astronomy Observatory Array Operation Center, P.O. Box O, 1003 Lopezville Road, Socorro, NM 87801-0387, USA § Email address: [email protected] 1 Abstract A 12-m diameter radio telescope will be deployed to the Summit Station in Greenland to provide direct confirmation of a Super Massive Black Hole (SMBH) by observing its shadow image in the active galaxy M87. The telescope (Greenland Telescope: GLT) is to become one of the Very Long Baseline Interferometry (VLBI) stations at sub-millimeter (submm) regime, providing the longest baseline > 9,000 km to achieve an exceptional angular resolution of 20 µas at 350 GHz, which will enable us to resolve the shadow size of ~40 µas.