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CMB S4 Stage-4 CMB Experiment
Cosmic Microwave Background past and future June 3rd, 2016 28th Rencontres de Blois Akito KUSAKA Lawrence Berkeley National Laboratory Light New TeV Particle? Higgs 5th force? Yukawa Inflation n Dark Dark Energy 퐵 /퐵 Matter My summary of “Snowmass Questions” 2014 2.7K blackbody What is CMB? Light from Last Scattering Surface LSS: Boundary between plasma and neutral H COBE/FIRAS Mather et. al. (1990) Planck Collaboration (2014) The Universe was 1100 times smaller Fluctuations seeding “us” 2015 Planck Collaboration (2015) Wk = 0 0.005 (w/ BAO) Gaussian Planck Collaboration (2014) Polarization Quadrupole anisotropy creates linear polarization via Thomson scattering http://background.uchicago.edu/~whu/polar/webversion/polar.html Polarization – E modes and B modes E modes: curl free component 푘 B modes: divergence free component 푘 CMB Polarization Science Inflation / Gravitational Waves Gravitational Lensing / Neutrino Mass Light Relativistic Species And more… B-mode from Inflation It’s about the stuff here A probe into the Early Universe Hot High Energy ~3000K (~0.25eV) Photons 1016 GeV ? ~1010K (~1MeV) Neutrinos Gravitational waves Sound waves Source of GW? : inflation Inflation › Rapid expansion of universe Quantum fluctuation of metric during inflation › Off diagonal component (T) primordial gravitational waves Unique probe into gravity quantum mechanics connection Ratio to S (on-diagonal): r=T/S Lensing B-mode Deflection by lensing (Nearly) Gaussian Non-Gaussian (Nearly) pure E modes Non-zero B modes It’s about the stuff here Lensing B-mode Abazajian et. al. (2014) Deflection by lensing (Nearly) Gaussian Non-Gaussian (Nearly) pure E modes Non-zero B modes Accurate mass measurement may resolve neutrino mass hierarchy. -
Globular Clusters and Galactic Nuclei
Scuola di Dottorato “Vito Volterra” Dottorato di Ricerca in Astronomia– XXIV ciclo Globular Clusters and Galactic Nuclei Thesis submitted to obtain the degree of Doctor of Philosophy (“Dottore di Ricerca”) in Astronomy by Alessandra Mastrobuono Battisti Program Coordinator Thesis Advisor Prof. Roberto Capuzzo Dolcetta Prof. Roberto Capuzzo Dolcetta Anno Accademico 2010-2011 ii Abstract Dynamical evolution plays a key role in shaping the current properties of star clus- ters and star cluster systems. We present the study of stellar dynamics both from a theoretical and numerical point of view. In particular we investigate this topic on different astrophysical scales, from the study of the orbital evolution and the mutual interaction of GCs in the Galactic central region to the evolution of GCs in the larger scale galactic potential. Globular Clusters (GCs), very old and massive star clusters, are ideal objects to explore many aspects of stellar dynamics and to investigate the dynamical and evolutionary mechanisms of their host galaxy. Almost every surveyed galaxy of sufficiently large mass has an associated group of GCs, i.e. a Globular Cluster System (GCS). The first part of this Thesis is devoted to the study of the evolution of GCSs in elliptical galaxies. Basing on the hypothesis that the GCS and stellar halo in a galaxy were born at the same time and, so, with the same density distribution, a logical consequence is that the presently observed difference may be due to evolution of the GCS. Actually, in this scenario, GCSs evolve due to various mechanisms, among which dynamical friction and tidal interaction with the galactic field are the most important. -
Wide-Survey of the QUIJOTE CMB Experiment Presented By: Federica Guidi (IAC, ULL), on Behalf of the QUIJOTE Collaboration
Wide-survey of the QUIJOTE CMB experiment Presented by: Federica Guidi (IAC, ULL), on behalf of the QUIJOTE collaboration. I present the status and the recent results of the QUIJOTE (Q-U-I JOint TEnerife) experiment. QUIJOTE is a project that operates from the Teide Observatory, with the aim to characterize the emission of the galactic foregrounds at microwave wavelengths, and to study the polarization of the Cosmic Microwave Background, targeting the detection of the primordial gravitational waves, the so called ”B-modes”, down to a value of the tensor to scalar ratio of r = 0.05. Recently, one of the two instruments of QUIJOTE, the Multi Frequency Instrument (MFI), concluded a wide-survey campaign, during which we observed the full northern sky, at 11, 13, 17 and 19 GHz. The wide survey maps of QUIJOTE will be delivered soon to the community. Here I present the current status of the maps, and I summarize few scientific results related to them, with special emphasis on the low frequency Galactic foregrounds, such as the Synchrotron and the Anomalous Microwave Emission. XIV.0 Reunión Científica 13-15 julio 2020 Context of the research: QUIJOTE: a polarimetric CMB experiment for the characterization of the low frequency galactic foregrounds ● CMB polarization experiments are searching for the polarization pattern imprinted by primordial gravitational waves: the “B-modes”. ● QUIJOTE is a polarimetric CMB experiment installed at the Teide observatory since 2012. ● QUIJOTE extends the Planck and WMAP coverage to low frequency, with two instruments: ○ Multi Frequency Instrument (MFI): 11, 13, 17, 19 GHz; ○ Thirty and Forty GHz Instrument (TFGI): Q Q Q Q J J 30-40 GHz. -
Delft University of Technology Groundbird Observation of CMB
Delft University of Technology GroundBIRD Observation of CMB Polarization with a Rapid Scanning and MKIDs Nagasaki, T.; Choi, J.; Génova-Santos, R. T.; Karatsu, K.; Lee, K.; Naruse, M.; Suzuki, J.; Taino, T.; Tomita, N.; More Authors DOI 10.1007/s10909-018-2077-y Publication date 2018 Document Version Accepted author manuscript Published in Journal of Low Temperature Physics Citation (APA) Nagasaki, T., Choi, J., Génova-Santos, R. T., Karatsu, K., Lee, K., Naruse, M., Suzuki, J., Taino, T., Tomita, N., & More Authors (2018). GroundBIRD: Observation of CMB Polarization with a Rapid Scanning and MKIDs. Journal of Low Temperature Physics, 193(5-6), 1066-1074. https://doi.org/10.1007/s10909-018- 2077-y Important note To cite this publication, please use the final published version (if applicable). Please check the document version above. Copyright Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons. Takedown policy Please contact us and provide details if you believe this document breaches copyrights. We will remove access to the work immediately and investigate your claim. This work is downloaded from Delft University of Technology. For technical reasons the number of authors shown on this cover page is limited to a maximum of 10. Journal of Low Temperature Physics manuscript No. (will be inserted by the editor) GroundBIRD - Observation of CMB polarization with a rapid scanning and MKIDs T. -
Women of Goddard: Careers in Science, Technology, Engineering, and Mathematics
Women of Goddard: Careers in Science, Technology, Engineering, and Mathematics Engineering, Technology, Careers in Science, of Goddard: Women National Aeronautics and Space Administration Goddard of Parkinson, Millar, Thaller Millar, Parkinson, Careers in Science Technology Engineering & Mathematics Women www.nasa.gov Women of Goddard NASA’s Goddard Space Flight Center IV&V, WV Goddard Institute for Space Studies, Greenbelt, Maryland, Main Campus Wallops Flight Facility, Virginia New York City Testing and Integration Facility, Greenbelt Home of Super Computing and Data Storage, Greenbelt GSFC’s new Sciences and Exploration Building, Greenbelt Women of Goddard: Careers in Science, Technology, Engineering, and Mathematics Editors: Claire L. Parkinson, Pamela S. Millar, and Michelle Thaller Graphics and Layout: Jay S. Friedlander In Association with: The Maryland Women’s Heritage Center (MWHC) NASA Goddard Space Flight Center, Greenbelt, Maryland, July 2011 Women of Goddard Careers in Foreword Science A century ago women in the United States could be schoolteachers and nurses but were largely excluded from the vast majority of other jobs that could Technology be classified as Science, Technology, Engineering, or Mathematics (STEM careers). Some inroads were fortuitously made during World Wars I and II, when because of Engineering the number of men engaged in fighting overseas it became essential that women fill in on jobs of all types on the home front. However, many of these inroads Mathematics were lost after the wars ended and the men -
Progress in Nuclear Astrophysics of East and Southeast Asia
Aziz et al. AAPPS Bulletin (2021) 31:18 AAPPS Bulletin https://doi.org/10.1007/s43673-021-00018-z Review article Open Access Progress in nuclear astrophysics of east and southeast Asia Azni Abdul Aziz1, Nor Sofiah Ahmad2,S.Ahn3,WakoAoki4, Muruthujaya Bhuyan2, Ke-Jung Chen5,Gang Guo6,7,K.I.Hahn8,9, Toshitaka Kajino4,10,11*, Hasan Abu Kassim2,D.Kim12, Shigeru Kubono13,14, Motohiko Kusakabe11,15,A.Li15, Haining Li16,Z.H.Li17,W.P.Liu17*,Z.W.Liu18, Tohru Motobayashi14, Kuo-Chuan Pan19,20,21,22, T.-S. Park12, Jian-Rong Shi16,23, Xiaodong Tang24,25* ,W.Wang26,Liangjian Wen27, Meng-Ru Wu5,6, Hong-Liang Yan16,23 and Norhasliza Yusof2 Abstract Nuclear astrophysics is an interdisciplinary research field of nuclear physics and astrophysics, seeking for the answer to a question, how to understand the evolution of the universe with the nuclear processes which we learn. We review the research activities of nuclear astrophysics in east and southeast Asia which includes astronomy, experimental and theoretical nuclear physics, and astrophysics. Several hot topics such as the Li problems, critical nuclear reactions and properties in stars, properties of dense matter, r-process nucleosynthesis, and ν-process nucleosynthesis are chosen and discussed in further details. Some future Asian facilities, together with physics perspectives, are introduced. Keywords: Nuclear astrophysics, East and southeast Asia 1 Introduction • What are the nuclear reactions that drive the Nuclear astrophysics deals with astronomical phenomena evolution of stars and stellar explosions? involving atomic nuclei, and therefore, it is an interdis- ciplinary field that consists of astronomy, astrophysics, The research involves close collaboration among and nuclear physics. -
Kinetic Inductance Detectors for the OLIMPO Experiment: In–Flight Operation and Performance
Prepared for submission to JCAP Kinetic Inductance Detectors for the OLIMPO experiment: in–flight operation and performance S. Masi,a;b;1 P. de Bernardis,a;b A. Paiella,a;b F. Piacentini,a;b L. Lamagna,a;b A. Coppolecchia,a;b P. A. R. Ade,c E. S. Battistelli,a;b M. G. Castellano,d I. Colantoni,d;e F. Columbro,a;b G. D’Alessandro,a;b M. De Petris,a;b S. Gordon, f C. Magneville,g P. Mauskopf, f;h G. Pettinari,d G. Pisano,c G. Polenta,i G. Presta,a;b E. Tommasi,i C. Tucker,c V. Vdovin,l;m A. Volpei and D. Yvong aDipartimento di Fisica, Sapienza Università di Roma, P.le A. Moro 2, 00185 Roma, Italy bIstituto Nazionale di Fisica Nucleare, Sezione di Roma, P.le A. Moro 2, 00185 Roma, Italy cSchool of Physics and Astronomy, Cardiff University, Cardiff CF24 3YB, UK dIstituto di Fotonica e Nanotecnologie - CNR, Via Cineto Romano 42, 00156 Roma, Italy ecurrent address: CNR-Nanotech, Institute of Nanotechnology c/o Dipartimento di Fisica, Sapienza Università di Roma, P.le A. Moro 2, 00185, Roma, Italy f School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USA gIRFU, CEA, Université Paris-Saclay, F-91191 Gif sur Yvette, France hDepartment of Physics, Arizona State University, Tempe, AZ 85257, USA iItalian Space Agency, Roma, Italy lInstitute of Applied Physics RAS, State Technical University, Nizhnij Novgorov, Russia mASC Lebedev PI RAS, Moscow, Russia E-mail: [email protected] Abstract. We report on the performance of lumped–elements Kinetic Inductance Detector (KID) arrays for mm and sub–mm wavelengths, operated at 0:3 K during the stratospheric flight of the OLIMPO payload, at an altitude of 37:8 km. -
China's First Step Towards Probing the Expanding Universe and the Nature of Gravity Using a Space Borne Gravitational Wave
PERSPECTIVE https://doi.org/10.1038/s42005-021-00529-z OPEN China’s first step towards probing the expanding universe and the nature of gravity using a space borne gravitational wave antenna The Taiji Scientific Collaboration* In this perspective, we outline that a space borne gravitational wave detector network combining LISA and Taiji can be used to measure the Hubble constant with an uncertainty less than 0.5% in ten years, compared with the network of the ground based gravitational wave detectors which can measure the Hubble constant within a 2% uncertainty in the next five years by the standard siren method. Taiji is a Chinese space borne gravitational wave 1234567890():,; detection mission planned for launch in the early 2030 s. The pilot satellite mission Taiji-1 has been launched in August 2019 to verify the feasibility of Taiji. The results of a few tech- nologies tested on Taiji-1 are presented in this paper. he observation of gravitational waves (GWs) enables us to explore the Universe in more Tdetails than that is currently known. By testing the theory of general relativity, it can unveil the nature of gravity. In particular, a GW can be used to determine the Hubble constant by a standard siren method1,2. This method3 was first used by the Advanced LIGO4 and Virgo5 observatories when they discovered GW event GW1708176. Despite the degeneracy problem in the ground-based GW detectors, the Hubble constant can reach a precision of 2% after a 5-year observation with the network of the current surface GW detectors6, although LIGO’s O3 data have shown that the chance to detect electromagnetic (EM) counterpart might be a little optimistic7. -