Electronic Newsletter December 15, 2016
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UC Berkeley UC Berkeley Electronic Theses and Dissertations
UC Berkeley UC Berkeley Electronic Theses and Dissertations Title Discoverable Matter: an Optimist’s View of Dark Matter and How to Find It Permalink https://escholarship.org/uc/item/2sv8b4x5 Author Mcgehee Jr., Robert Stephen Publication Date 2020 Peer reviewed|Thesis/dissertation eScholarship.org Powered by the California Digital Library University of California Discoverable Matter: an Optimist’s View of Dark Matter and How to Find It by Robert Stephen Mcgehee Jr. 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 Hitoshi Murayama, Chair Professor Alexander Givental Professor Yasunori Nomura Summer 2020 Discoverable Matter: an Optimist’s View of Dark Matter and How to Find It Copyright 2020 by Robert Stephen Mcgehee Jr. 1 Abstract Discoverable Matter: an Optimist’s View of Dark Matter and How to Find It by Robert Stephen Mcgehee Jr. Doctor of Philosophy in Physics University of California, Berkeley Professor Hitoshi Murayama, Chair An abundance of evidence from diverse cosmological times and scales demonstrates that 85% of the matter in the Universe is comprised of nonluminous, non-baryonic dark matter. Discovering its fundamental nature has become one of the greatest outstanding problems in modern science. Other persistent problems in physics have lingered for decades, among them the electroweak hierarchy and origin of the baryon asymmetry. Little is known about the solutions to these problems except that they must lie beyond the Standard Model. The first half of this dissertation explores dark matter models motivated by their solution to not only the dark matter conundrum but other issues such as electroweak naturalness and baryon asymmetry. -
Table of Contents (Print)
NEWSPAPER The PandaX-II liquid xenon detector used for dark matter searches at the China Jin-Ping Underground Laboratory. Selected for an Editors’ Suggestion. [Andi Tan et al. (PandaX-II Collaboration), Phys. Rev. Lett. 117, 121303 (2016)] PHYSICAL REVIEW LETTERS Contents Articles published 10 September–16 September 2016 VOLUME 117, NUMBER 12 16 September 2016 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. Direct Measurement of the Density Matrix of a Quantum System .................................................................... 120401 G. S. Thekkadath, L. Giner, Y. Chalich, M. J. Horton, J. Banker, and J. S. Lundeen Accessing Many-Body Localized States through the Generalized Gibbs Ensemble ........................................................... 120402 Stephen Inglis and Lode Pollet Noise Threshold and Resource Cost of Fault-Tolerant Quantum Computing with Majorana Fermions in Hybrid Systems ................................................................................................................................................................. 120403 Ying Li Quasiprobability Representations of Quantum Mechanics with Minimal Negativity .......................................................... 120404 Huangjun Zhu Grover Search and the No-Signaling Principle ..................................................................................................................... 120501 Ning Bao, Adam Bouland, and Stephen P. Jordan Gravitation and Astrophysics Observation of Noise Correlated by -
Constraining a Thin Dark Matter Disk with Gaia
LCTP 17-03, MIT-CTP 4957 Constraining a Thin Dark Matter Disk with Gaia Katelin Schutz,1, ∗ Tongyan Lin,1, 2, 3 Benjamin R. Safdi,4 and Chih-Liang Wu5 1Berkeley Center for Theoretical Physics, University of California, Berkeley, CA 94720, USA 2Theoretical Physics Group, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 3Department of Physics, University of California, San Diego, CA 92093, USA 4Leinweber Center for Theoretical Physics, Department of Physics, University of Michigan, Ann Arbor, MI 48109 5Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, MA 02139 If a component of the dark matter has dissipative interactions, it could collapse to form a thin dark disk in our Galaxy that is coplanar with the baryonic disk. It has been suggested that dark disks could explain a variety of observed phenomena, including periodic comet impacts. Using the first data release from the Gaia space observatory, we search for a dark disk via its effect on stellar kinematics in the Milky Way. Our new limits disfavor the presence of a thin dark matter disk, and we present updated measurements on the total matter density in the Solar neighborhood. Introduction.| The particle nature of dark matter height of hDD 10 pc are required to meaningfully im- (DM) remains a mystery in spite of its large abundance pact the above∼ phenomena.1 in our Universe. Moreover, some of the simplest DM Here we present a comprehensive search for a local DD, models are becoming increasingly untenable. Taken to- using tracer stars as a probe of the local gravitational po- gether, the wide variety of null searches for particle DM tential. -
Cora Dvorkin Curriculum Vitae
Cora Dvorkin 1 Cora Dvorkin Curriculum Vitae Contact Address: Department of Physics, Harvard University 17 Oxford Street, Lyman 334 Cambridge, MA 02138 Telephone (773) 915-3857 Email: [email protected] Website: http : ==dvorkin:physics:harvard:edu=Home:html https : ==www:physics:harvard:edu=people=facpages=dvorkin Citizenship: Argentina EDUCATION July, 2011: Doctor of Philosophy in Physics University of Chicago Dissertation: \On the Imprints of Inflation in the Cosmic Microwave Background" Advisor: Prof. Wayne Hu September, 2006: Master of Science in Physics University of Chicago June, 2005: Diploma in Physics (M.S. equivalent) University of Buenos Aires (Summa cum laude) RESEARCH INTERESTS I am a theoretical cosmologist. My areas of interest are: the nature of dark matter, neutrinos and other light relics, and the physics of the early universe. I use observables such as the Cosmic Microwave Background (CMB), the large-scale structure of the universe, 21-cm radiation, and strong gravitational lensing to shed light on these questions. POSITIONS HELD July, 2019 - present Department of Physics, Harvard University Associate Professor July, 2015 - June, 2019 Department of Physics, Harvard University Assistant Professor 2014-2015 ITC - Center for Astrophysics, Harvard University Hubble Fellow and ITC Fellow 2011-2014 Institute for Advanced Study (Princeton), School of Natural Sciences Postdoctoral Member 2006-2011 University of Chicago, Department of Physics Research Assistant at Kavli Institute for Cosmological Physics (KICP) 2004-2005 -
Tevpa 2017.Pdf
東京大学 2004.2.12 シンボルマーク+ロゴタイプ 新東大ブルー 基本形 漢字のみ 英語のみ TeV frontier in particle astrophysics Hitoshi Murayama (Berkeley, Kavli IPMU) TeVPA 2017, Columbus, Aug 11, 2017 東京大学 2004.2.12 シンボルマーク+ロゴタイプ 新東大ブルー 基本形 漢字のみ 英語のみ sub-GeV frontier in particle astrophysics Hitoshi Murayama (Berkeley, Kavli IPMU) TeVPA 2017, Columbus, Aug 11, 2017 +Yonit Hochberg, Eric Kuflik matter Ωm changes the overall heights of the peaks matter Ωm changes the overall heights of the peaks nDM 10 GeV =4.4 10− WIMP Miracles ⇥ mDM DM SM DM SM “weak” coupling correct abundance “weak” mass scale Miracle2 nDM 10 GeV =4.4 10− WIMP Miracles ⇥ mDM DM SM ↵2 σ2 2v h ! i⇡m2 2 ↵ 10− ⇡ m 300 GeV DM SM ⇡ “weak” coupling correct abundance “weak” mass scale Miracle2 sociology • Particle physicists used to think sociology • Particle physicists used to think • need to solve problems with the SM sociology • Particle physicists used to think • need to solve problems with the SM • hierarchy problem, strong CP, etc sociology • Particle physicists used to think • need to solve problems with the SM • hierarchy problem, strong CP, etc • it is great if a solution also gives dark matter candidate as an option sociology • Particle physicists used to think • need to solve problems with the SM • hierarchy problem, strong CP, etc • it is great if a solution also gives dark matter candidate as an option • big ideas: supersymmetry, extra dim sociology • Particle physicists used to think • need to solve problems with the SM • hierarchy problem, strong CP, etc • it is great if a solution also gives dark -
Signature Redacted Thesis Supervisor Certified By
MASSACHUSETTS INSTMITE A Tale of Two Particles OF TECHNOLOGY by AU6 15 2014 Katelin Schutz LIBRARIES Submitted to the Department of Physics in partial fulfillment of the requirements for the degree of Bachelor of Science in Physics at the MASSACHUSETTS INSTITUTE OF TECHNOLOGY June 2014 @ Katelin Schutz, MMXIV. All rights reserved. The author hereby grants to MIT permission to reproduce and to distribute publicly paper and electronic copies of this thesis document in whole or in part in any medium now known or hereafter created. Signature redacted Author .. .................................. Department of Physics Signature redacted May 9, 2014 Certified by. ........................... A. David Kaiser Germeshausen Professor of the History of Science Senior Lecturer, Department of Physics Signature redacted Thesis Supervisor Certified by.. ............................. Tracy Slatyer Assistant Professor of Physics Signature redacted Thesis Supervisor Accepted by.. ..................... Nergis Mavalvala Senior Thesis Coordinator A Tale of Two Particles by Katelin Schutz Submitted to the Department of Physics on May 9, 2014, in partial fulfillment of the requirements for the degree of Bachelor of Science in Physics Abstract It was the earliest of times, it was the latest of times, it was the age of inflation, it was the age of collapse, it was the epoch of perturbation growth, it was the epoch of perturbation damping, it was the CMB of light, it was the dwarf galaxy of dark- ness, it was the largest of cosmic scales, it was the smallest of Milky Way subhalos, we had multiple nonminimally coupled inflatons before us, we had inelastically self- interacting dark matter before us, we were all going direct to the Planck scale, we were all going direct the other way. -
Reversed out (White) Reversed
Berkeley rev.( white) Berkeley rev.( FALL 2014 reversed out (white) reversed IN THIS ISSUE Berkeley’s Space Sciences Laboratory Tabletop Physics Bringing More Women into Physics ALUMNI NEWS AND MORE! Cover: The MAVEN satellite mission uses instrumentation developed at UC Berkeley's Space Sciences Laboratory to explore the physics behind the loss of the Martian atmosphere. It’s a continuation of Berkeley astrophysicist Robert Lin’s pioneering work in solar physics. See p 7. photo credit: Lockheed Martin Physics at Berkeley 2014 Published annually by the Department of Physics Steven Boggs: Chair Anil More: Director of Administration Maria Hjelm: Director of Development, College of Letters and Science Devi Mathieu: Editor, Principal Writer Meg Coughlin: Design Additional assistance provided by Sarah Wittmer, Sylvie Mehner and Susan Houghton Department of Physics 366 LeConte Hall #7300 University of California, Berkeley Berkeley, CA 94720-7300 Copyright 2014 by The Regents of the University of California FEATURES 4 12 18 Berkeley’s Space Tabletop Physics Bringing More Women Sciences Laboratory BERKELEY THEORISTS INVENT into Physics NEW WAYS TO SEARCH FOR GOING ON SIX DECADES UC BERKELEY HOSTS THE 2014 NEW PHYSICS OF EDUCATION AND SPACE WEST COAST CONFERENCE EXPLORATION Berkeley theoretical physicists Ashvin FOR UNDERGRADUATE WOMEN Vishwanath and Surjeet Rajendran IN PHYSICS Since the Space Lab’s inception are developing new, small-scale in 1959, Berkeley physicists have Women physics students from low-energy approaches to questions played important roles in many California, Oregon, Washington, usually associated with large-scale of the nation’s space-based scientific Alaska, and Hawaii gathered on high-energy particle experiments. -
LIST of PUBLICATIONS Priyamvada Natarajan, Yale University 1
LIST OF PUBLICATIONS Priyamvada Natarajan, Yale University 1. Meneghetti, M; Davoli, G; Bergamini, P; Rosati, P; Natarajan, P. et al. 2020 An excess of small-scale gravitational lenses observed in galaxy clusters Science, Vol. 369, Issue 6509, 1347-1353. 2. Natarajan, Priyamvada. 2020 A new channel to form Intermediate Mass Black Holes throughout cosmic time MNRAS, submitted. 3. Tam, S-I., et al. 2020. The distribution of dark matter and gas spanning 6 Mpc around post-merger galaxy cluster MS- 0451-03 MNRAS, 496, 4032. 4. Ricarte, Angelo; Tremmel, Michael; Natarajan, Priyamvada & Quinn, Thomas. 2020 A Link between Ram Pressure Stripping and Active Galactic Nuclei ApJ, 895, L8. 5. Niemeic, Anna., et al. 2020 hybrid-LENSTOOL: a self-consistent algorithm to model galaxy clusters with strong- and weak- lensing simultaneously MNRAS, 493, 3331. 6. Steinhardt, C., et al., 2020 The BUFFALO HST Survey ApJS, 247, 64. 7. Natarajan, Priyamvada et al. 2019. Disentangling nature from nurture: tracing the origin of seed black holes, White paper submitted to the 2020 Decadal Survey, the NAS White Paper Repository, BAAS, 51, 7, 73. 8. Cornish, Neil., et al. 2019. The Discovery Potential of Space-Based Gravitational Wave Astronomy, White paper submitted to the 2020 Decadal Survey, the NAS White Paper Repository, BAAS, 51, 7, 76. 9. Pacucci, Fabio., et al. 2019. Detecting the Birth of Supermassive Black Holes Formed from Heavy Seeds, White paper submitted to the 2020 Decadal Survey, the NAS White Paper Repository, BAAS, 51, 7, 117. 10. Baker, John., et al. 2019. Multi-messenger science opportunities with mHz gravitational waves, White paper submitted to the 2020 Decadal Survey, the NAS White Paper Repository, BAAS, 51, 7, 123. -
Black Hole Apocalypse
NOVA: BLACK HOLE APOCALYPSE Premieres Wednesday, January 10, 2018 at 9PM/8C on PBS (check local listings) SUMMER 2017 TCA PRESS TOUR PANELIST BIOS www.pbs.org/nova http://www.facebook.com/novaonline Twitter: @novapbs PAULA S. APSELL Senior Executive Producer, NOVA, and Director, WGBH Science Unit, WGBH Boston Paula Apsell began her work in broadcast typing the public broadcaster WGBH Boston’s daily logs, a job, she notes, that is now mercifully automated. While at WGBH-FM, her next move, she developed the award-winning children’s drama series The Spider’s Web and served as an on-air radio news producer. She then joined WGBH’s pioneering science documentary series NOVA, producing, among several other programs, Death of a Disease, the first long-form documentary about the worldwide eradication of smallpox. Moving to WCVB, the ABC affiliate in Boston, she became senior producer for medical programming, working with Dr. Timothy Johnson. She then spent a year at MIT as a Knight Science Journalism Fellow until she took over the leadership of NOVA, where she is now senior executive producer and director of the WGBH Science Unit. In 2016, Apsell became the second woman and first from the profession of journalism and communications to receive the Galien Foundation’s annual Pro Bono Humanum Award, which recognizes contributions leading to improvements in the state of human health. She is also a recipient of the Bradford Washburn Award from the Museum of Science, Boston; the Carl Sagan Award, given by the Council of Scientific Society Presidents; the American Institute of Physics Andrew Gemant Award; and the Planetary Society’s Cosmos Award, among many others. -
LIST of PUBLICATIONS Priyamvada Natarajan, Yale University 1
LIST OF PUBLICATIONS Priyamvada Natarajan, Yale University 1. Natarajan, Priyamvada. 2020 Black Hole Formation at Late Cosmic Epochs MNRAS, submitted. 2. Meneghetti, M., et al. 2020. A new gap between observations and theory revealed by cluster lensing Science, accepted. 3. Tam, S-I., et al. 2020. The distribution of dark matter and gas spanning 6 Mpc around post-merger galaxy cluster MS- 0451-03 MNRAS, in press. 4. Ricarte, Angelo; Tremmel, Michael; Natarajan, Priyamvada & Quinn, Thomas. 2020 A Link between Ram Pressure Stripping and Active Galactic Nuclei ApJ, 895, L8. 5. Niemeic, Anna., et al. 2020 hybrid-LENSTOOL: a self-consistent algorithm to model galaxy clusters with strong- and weak- lensing simultaneously MNRAS, 493, 3331. 6. Steinhardt, C., et al., 2020 The BUFFALO HST Survey ApJS, 247, 64. 7. Natarajan, Priyamvada et al. 2019. Disentangling nature from nurture: tracing the origin of seed black holes, White paper submitted to the 2020 Decadal Survey submitted to NAS White Paper Repository, BAAS, 51, 7, 73. 8. Cornish, Neil., et al. 2019. The Discovery Potential of Space-Based Gravitational Wave Astronomy, White paper submitted to the 2020 Decadal Survey submitted to NAS White Paper Repository, BAAS, 51, 7, 76. 9. Pacucci, Fabio., et al. 2019. Detecting the Birth of Supermassive Black Holes Formed from Heavy Seeds, White paper submitted to the 2020 Decadal Survey submitted to NAS White Paper Repository, BAAS, 51, 7, 117. 10. Baker, John., et al. 2019. Multi-messenger science opportunities with mHz gravitational waves, White paper submitted to the 2020 Decadal Survey submitted to NAS White Paper Repository, BAAS, 51, 7, 123. -
Quasar Outflows and the Formation of Dwarf Galaxies
Mon. Not. R. Astron. Soc. 000, 000–000 (0000) Printed 2 October 2018 Quasar outflows and the formation of dwarf galaxies Priyamvada Natarajan,1, Steinn Sigurdsson1 and Joseph Silk1,2,3 1Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, U. K. 2Department of Astronomy and Physics, Univ. of California at Berkeley, Berkeley, CA 97420, U. S. A. 3Center for Particle Astrophysics, Univ. of California at Berkeley, Berkeley, CA 97420, U. S. A. 2 October 2018 ABSTRACT In this paper we propose a scenario for the formation of a population of baryon rich, dark matter deficient dwarf galaxies at high redshift from the mass swept out in the Inter-Galactic Medium (IGM) by energetic outflows from luminous quasars. We pre- dict the intrinsic properties of these galaxies, and examine the prospects for their ob- servational detection in the optical, X-ray and radio wavebands. Detectable thermal Sunyaev-Zeldovich decrements on arc-minute scales in the cosmic microwave back- ground radiation maps are expected during the shock-heated expanding phase from these hot bubbles. We conclude that the optimal detection strategy for these dwarfs is via narrow-band Lyman-α imaging of regions around high redshift quasars. A scaled down (in the energetics) version of the same model is speculated upon as a possible mechanism for forming pre-galactic globular clusters. Key words: 1 INTRODUCTION sponding to the mass of dwarf galaxy size objects, akin to the explosion-driven galaxy formation scenarios proposed Galaxy formation is a complex physical process involving by McKee & Ostriker (1977), Ostriker & Cowie (1981) and several length, mass and time scales, therefore it is expected Ostriker & Ikeuchi (1983). -
Upcoming Events
To view this email as a web page, go here. Upcoming Events Monday, October 12 4:00pm Physics Club. Sheldon Stone, Syracuse University, "Physics at LHCb" via zoom. Tuesday, October 13 12:00pm WIDG Seminar. Carl Rethmeier, Carleton University, "Measurement of Alpha-Decaying Backgrounds and the Search for 5.5 MeV Solar Axions in DEAP-3600" via zoom. 12:00pm Department of Chemistry Biophysical Seminar. Richard Cogdell, University of Glasgow, "Recent advances on the structure and function of purple bacterial light harvesting complexes" via zoom. 4:00pm DEIAP Town Hall. Karsten Heeger, Yale University, "Planning for DEI action" via zoom. Wednesday, October 14 3:30pm Earth and Planetary Science Colloquium. Daniel Ibarra, University of California Berkeley, "Drivers of warm and cold past wet states recorded by lakes in western North America" via zoom. 4:00pm Molecular, Cellular and Developmental Biology Seminar. Erin Carlson, University of Minnesota, "Chemical Microbiology: Translation and Control of Bacterial Behavior" via zoom. Hosted by Stavroula Hatzios. 4:00pm Department of Chemistry Organic Seminar. Jeff Chan, University of Illinois, "Expanding the Chemical Toolbox for Acoustic-based Imaging of Cancer" via zoom. 4:15pm Department of Mathematics Colloquium. Anna Gilbert, Yale University, "Title TBA" via zoom. Thursday, October 15 1:00pm NPA Seminar. Stefania Amodeo, Cornell, "Halo gas thermodynamics from the CMB: results from the Atacama Cosmology Telescope DR5" via zoom. 2:30pm Department of Astronomy Colloquium. Katelin Schutz, MIT Center for Theoretical Physics, "Making dark matter out of light: the cosmology of sub-MeV freeze-in" via zoom. Friday, October 16 4:00pm Yale Quantum Institute Open Mic.