2018 Catalog of Courses, Lectures, and Trips
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The Cosmos - Before the Big Bang
From issue 2601 of New Scientist magazine, 28 April 2007, page 28-33 The cosmos - before the big bang How did the universe begin? The question is as old as humanity. Sure, we know that something like the big bang happened, but the theory doesn't explain some of the most important bits: why it happened, what the conditions were at the time, and other imponderables. Many cosmologists think our standard picture of how the universe came to be is woefully incomplete or even plain wrong, and they have been dreaming up a host of strange alternatives to explain how we got here. For the first time, they are trying to pin down the initial conditions of the big bang. In particular, they want to solve the long-standing mystery of how the universe could have begun in such a well- ordered state, as fundamental physics implies, when it seems utter chaos should have reigned. Several models have emerged that propose intriguing answers to this question. One says the universe began as a dense sea of black holes. Another says the big bang was sparked by a collision between two membranes floating in higher-dimensional space. Yet another says our universe was originally ripped from a larger entity, and that in turn countless baby universes will be born from the wreckage of ours. Crucially, each scenario makes unique and testable predictions; observations coming online in the next few years should help us to decide which, if any, is correct. Not that modelling the origin of the universe is anything new. -
Quantum Cosmology of the Big Rip: Within GR and in a Modified Theory of Gravity
universe Conference Report Quantum Cosmology of the Big Rip: Within GR and in a Modified Theory of Gravity Mariam Bouhmadi-López 1,2,*, Imanol Albarran 3,4 and Che-Yu Chen 5,6 1 Department of Theoretical Physics, University of the Basque Country UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain 2 IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain 3 Departamento de Física, Universidade da Beira Interior, Rua Marquês D’Ávila e Bolama, 6201-001 Covilhã, Portugal; [email protected] 4 Centro de Matemática e Aplicações da Universidade da Beira Interior (CMA-UBI), Rua Marquês D’Ávila e Bolama, 6201-001 Covilhã, Portugal 5 Department of Physics, National Taiwan University, 10617 Taipei, Taiwan; [email protected] 6 LeCosPA, National Taiwan University, 10617 Taipei, Taiwan * Correspondence: [email protected] Academic Editors: Mariusz P. D ˛abrowski, Manuel Krämer and Vincenzo Salzano Received: 8 March 2017; Accepted: 12 April 2017; Published: 14 April 2017 Abstract: Quantum gravity is the theory that is expected to successfully describe systems that are under strong gravitational effects while at the same time being of an extreme quantum nature. When this principle is applied to the universe as a whole, we use what is commonly named “quantum cosmology”. So far we do not have a definite quantum theory of gravity or cosmology, but we have several promising approaches. Here we will review the application of the Wheeler–DeWitt formalism to the late-time universe, where it might face a Big Rip future singularity. The Big Rip singularity is the most virulent future dark energy singularity which can happen not only in general relativity but also in some modified theories of gravity. -
Big Rip Singularity in 5D Viscous Cosmology
Send Orders for Reprints to [email protected] The Open Astronomy Journal, 2014, 7, 7-11 7 Open Access Big Rip Singularity in 5D Viscous Cosmology 1,* 2 G.S. Khadekar and N.V. Gharad 1Department of Mathematics, Rashtrasant Tukadoji Maharaj Nagpur University, Mahatma Jyotiba Phule Educational Campus, Amravati Road, Nagpur-440033, India 2Department of Physics, Jawaharlal Nehru College, Wadi, Nagpur-440023, India Abstract: Dark energy of phantom or quintessence nature with an equation of state parameter almost equal to -1 often leads to a finite future singularity. The singularities in the dark energy universe, by assuming bulk viscosity in the frame- work of Kaluza-Klein theory of gravitation have been discussed. Particularly, it is proved, that the physically natural as- sumption of letting the bulk viscosity be proportional to the scalar expansion in a spatially 5D FRW universe, can derive the fluid into the phantom region ( < -1), even if it lies in the quintessence region ( >-1) in the non viscous case. It is also shown that influence of the viscosity term acts to shorten the singularity time but it does not change the nature of sin- gularity in the framework of higher dimensional space time. Keywords: Big Rip, dark energy, future singularity, viscous cosmology. 1. INTRODUCTION including a quintessence (Wang et al. [12]) and phantom (Caldwell [13]), and (ii) interacting dark energy models, by A revolutionary development seems to have taken place considering the interaction including Chaplygin gas (Ka- in cosmology during the last few years. The latest develop- menohehik et al [14]), generalized Chaplygin gas (Bento et ments of super-string theory and super-gravitational theory al. -
Science Fiction Stories with Good Astronomy & Physics
Science Fiction Stories with Good Astronomy & Physics: A Topical Index Compiled by Andrew Fraknoi (U. of San Francisco, Fromm Institute) Version 7 (2019) © copyright 2019 by Andrew Fraknoi. All rights reserved. Permission to use for any non-profit educational purpose, such as distribution in a classroom, is hereby granted. For any other use, please contact the author. (e-mail: fraknoi {at} fhda {dot} edu) This is a selective list of some short stories and novels that use reasonably accurate science and can be used for teaching or reinforcing astronomy or physics concepts. The titles of short stories are given in quotation marks; only short stories that have been published in book form or are available free on the Web are included. While one book source is given for each short story, note that some of the stories can be found in other collections as well. (See the Internet Speculative Fiction Database, cited at the end, for an easy way to find all the places a particular story has been published.) The author welcomes suggestions for additions to this list, especially if your favorite story with good science is left out. Gregory Benford Octavia Butler Geoff Landis J. Craig Wheeler TOPICS COVERED: Anti-matter Light & Radiation Solar System Archaeoastronomy Mars Space Flight Asteroids Mercury Space Travel Astronomers Meteorites Star Clusters Black Holes Moon Stars Comets Neptune Sun Cosmology Neutrinos Supernovae Dark Matter Neutron Stars Telescopes Exoplanets Physics, Particle Thermodynamics Galaxies Pluto Time Galaxy, The Quantum Mechanics Uranus Gravitational Lenses Quasars Venus Impacts Relativity, Special Interstellar Matter Saturn (and its Moons) Story Collections Jupiter (and its Moons) Science (in general) Life Elsewhere SETI Useful Websites 1 Anti-matter Davies, Paul Fireball. -
Features Lifestyle
12 Established 1961 Lifestyle Features Monday, July 26, 2021 rince’s estate will soon issue a sciousness... this is a concerted effort to technology and devices, which he saw the first time. “He said, ‘never in my completed record from the mercuri- really speak about these things,” said “as something that handcuffed people.” career have I taken a week where I didn’t Pal artist’s storied music vault, the Hayes, who co-produced the album. “I But while the album tackles decidedly write a song and pick up my guitar.’” The first never-before-heard album released really dug how raw it was, and as far as weighty topics - “Running Game (Son of release of Prince’s vast trove of music since the musician’s shock death five my production, I just wanted to keep it to a Slave Master)” centers on racism, remains a sensitive subject; the super- years ago. “Welcome 2 America” - a 12- where its raw and I don’t get in the way while “Same Page, Different Book” star was controlling of his work, image, track album finished in 2010, but shelved of what he’s trying to say.” touches on religious strife - the album and carefully constructed enigmatic per- for reasons unknown in the famous vault also includes vintage danceable and car- sona. Doing right by him is no small chal- at Prince’s Paisley Park compound near ‘Liberty and justice’ nal slow jam Prince in the mix. “Hot lenge. Minneapolis - offers a prophetic window For Hayes, the singular artist “was Summer” is a major-key, guitar-heavy, Previously the estate has re-released into social struggles at today’s forefront, way ahead”, like a “sage sitting in the feel-good track, while the sparsely expanded versions of Prince’s milestone delving into racism, political division, Himalayas somewhere”, in foreshadow- arranged “When She Comes” featuring albums, like “1999” and “Sign O’ The technology and disinformation. -
Chaotic Universe Model Ekrem Aydiner
www.nature.com/scientificreports OPEN Chaotic universe model Ekrem Aydiner In this study, we consider nonlinear interactions between components such as dark energy, dark matter, matter and radiation in the framework of the Friedman-Robertson-Walker space-time and propose a simple interaction model based on the time evolution of the densities of these components. Received: 28 July 2017 By using this model we show that these interactions can be given by Lotka-Volterra type equations. We numerically solve these coupling equations and show that interaction dynamics between dark Accepted: 15 December 2017 energy-dark matter-matter or dark energy-dark matter-matter-radiation has a strange attractor for Published: xx xx xxxx 0 > wde >−1, wdm ≥ 0, wm ≥ 0 and wr ≥ 0 values. These strange attractors with the positive Lyapunov exponent clearly show that chaotic dynamics appears in the time evolution of the densities. These results provide that the time evolution of the universe is chaotic. The present model may have potential to solve some of the cosmological problems such as the singularity, cosmic coincidence, big crunch, big rip, horizon, oscillation, the emergence of the galaxies, matter distribution and large-scale organization of the universe. The model also connects between dynamics of the competing species in biological systems and dynamics of the time evolution of the universe and ofers a new perspective and a new diferent scenario for the universe evolution. Te formation, structure, dynamics and evolution of the universe has always been of interest. It is commonly accepted that modern cosmology began with the publication of Einstein’s seminal article in 19171. -
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王å (音樂家) 音樂專輯 串行 (专辑 & æ—¶é— ´è¡¨) The Black Album https://zh.listvote.com/lists/music/albums/the-black-album-880043/songs Lovesexy https://zh.listvote.com/lists/music/albums/lovesexy-1583377/songs Love Symbol https://zh.listvote.com/lists/music/albums/love-symbol-955274/songs Graffiti Bridge https://zh.listvote.com/lists/music/albums/graffiti-bridge-2006389/songs Musicology https://zh.listvote.com/lists/music/albums/musicology-592659/songs The Rainbow Children https://zh.listvote.com/lists/music/albums/the-rainbow-children-1889451/songs 3121 https://zh.listvote.com/lists/music/albums/3121-224638/songs Chaos and Disorder https://zh.listvote.com/lists/music/albums/chaos-and-disorder-2956463/songs 20Ten https://zh.listvote.com/lists/music/albums/20ten-1755769/songs Plectrumelectrum https://zh.listvote.com/lists/music/albums/plectrumelectrum-18193229/songs N.E.W.S https://zh.listvote.com/lists/music/albums/n.e.w.s-1583349/songs Art Official Age https://zh.listvote.com/lists/music/albums/art-official-age-18085760/songs One Nite Alone... https://zh.listvote.com/lists/music/albums/one-nite-alone...-2231221/songs HITnRUN Phase Two https://zh.listvote.com/lists/music/albums/hitnrun-phase-two-21762471/songs The Vault: Old Friends 4 Sale https://zh.listvote.com/lists/music/albums/the-vault%3A-old-friends-4-sale-2633846/songs https://zh.listvote.com/lists/music/albums/hitnrun-phase-one-%28prince-album%29- HITnRUN phase one (Prince album) 20735574/songs The Chocolate Invasion https://zh.listvote.com/lists/music/albums/the-chocolate-invasion-1975542/songs -
Texas Annual Conference of the United Methodist Church 2013 Pre
Texas Annual Conference of the United Methodist Church 2013 Pre-Conference Journal Dear Member of the Texas Annual Conference, Grace and peace to you in the name of our Lord Jesus Christ. Welcome to the 2013 Texas Annual Conference of the United Methodist Church! Our planning team, staff and elected leaders have been working hard to bring you, what I hope you’ll agree is, our best Annual Conference yet. During our 2012 Annual Conference, delegates voted to adopt the Strategic Assessment Team Report that included a commitment to three focus areas of ministry: cultivate growing, fruitful, missional congregations, form transforming lay and clergy leaders, and invest in the young. Our theme for this year’s conference is Invest in the Young but we will also have presentations on the other two focus areas. You’ll be hearing stories from local churches on how they have “lived into” these focus areas and creatively reached out into their communities to “make disciples of Jesus Christ for the transformation of the world. Conference will be held this year from May 26 - 29, 2013 at Hilton Americas – Houston, 1600 Lamar St. Houston, Texas 77010. We are very fortunate to present Rev. Kenda Creasy Dean as our keynote speaker. In line with our theme, Invest in the Young, Rev. Dean has extensive experience in ministry to the young including authoring several books on the subject. I am sure you’ll be both enlightened and entertained by her presentations. We are also blessed to have Dr. Jim Bankston of St. Paul’s UMC, Houston preach our Service of Remembrance & Thanksgiving on Monday evening and Rev. -
Detroit Media Guide Contents
DETROIT MEDIA GUIDE CONTENTS EXPERIENCE THE D 1 Welcome ..................................................................... 2 Detroit Basics ............................................................. 3 New Developments in The D ................................. 4 Destination Detroit ................................................... 9 Made in The D ...........................................................11 Fast Facts ................................................................... 12 Famous Detroiters .................................................. 14 EXPLORE DETROIT 15 The Detroit Experience...........................................17 Dearborn/Wayne ....................................................20 Downtown Detroit ..................................................22 Greater Novi .............................................................26 Macomb ....................................................................28 Oakland .....................................................................30 Itineraries .................................................................. 32 Annual Events ..........................................................34 STAYING WITH US 35 Accommodations (by District) ............................. 35 NAVIGATING THE D 39 Metro Detroit Map ..................................................40 Driving Distances ....................................................42 District Maps ............................................................43 Transportation .........................................................48 -
Death from the Skies!
Death from the Skies! Kristi Schneck SLAC Association for Student Seminars 7/11/12 The universe is trying to kill us! Well, not actively... BUT • Near-Earth Asteroids • Solar Flares and Coronal Mass Ejections • Supernovae • Gamma Ray Bursts • Black Holes 2 of 18 Asteroids and Near-Earth Objects 3 of 18 Hollywood|Armageddon 4 of 18 Reality • The earth is pummeled by 20-40 tons of material every day • Chicxulub impact{extinction of dinosaurs • 1908 Tunguska event (air burst of ∼100 m asteroid above Siberia) 5 of 18 Reality|99942 Apophis 6 of 18 The Torino Scale 7 of 18 What can we do about this? • Blow it up, redirect it, etc... http://www.b612foundation.org/ 8 of 18 Death by Sun 9 of 18 Hollywood|Knowing 10 of 18 Hollywood (again)|2012 The neutrinos have mutated! http://www.youtube.com/watch?v=uXqUcuE8fNo 11 of 18 Reality • Charged particles from CMEs mess with satellites and power grid ◦ March 1989|major power outages in NJ and Canada ◦ Damage only increases as we use more power • Depletion of ozone and production of NO2 in atmosphere • \Little Ice Age" in Europe (17th Century) correlated with very low sunspot activity ◦ Many other factors contributed to this.... 12 of 18 Supernovae • ∼20 stars within 1000 ly could potentially become supernovae • For 20 M star 10 ly away, 40 million tons of material would hit us ◦ < One ounce per square foot over Earth's surface ◦ Inverse-square law saves the day! • Other stuff: neutrinos, X-rays, gammas ◦ Earth-bound people are pretty safe safe, but astronauts? 13 of 18 Gamma Ray Bursts • Discovered while -
Sabotage Records
Downloaded from: justpaste.it/princeflac Sabotage Records #SAB 001-002 Driving 2 Midnight Mess #SAB 003-005 Paisley Park Extravaganza Box Set #SAB 006-007 Past, Present & Future #SAB 006b-007b Past, Present & Futu re II #SAB 008-009 (Prince's Tales From A) Spa nish Harem #SAB 010-011+040 Rock Over Germany #SAB 012-013 Sound & Vision Volume 2 #SAB 014 The Hollywood Affair #SAB 015 Emancipation Proclam ation #SAB 016-017 Sound & Vision Volume 1 #SAB 018-019 Sound & Vision Volume 3 #SAB 020-021 Atlanta, January 19th 199 7 #SAB 022-023 Aloha Hawaii #SAB 024A-B Sun, Moon & S tars #SAB 025-026 Gold Tour Finale #SAB 027-028 The Artist V's Toronto #SAB 029 Emancipation - The Secret Chapter #SAB 030-031 Late Night Shows Part 1 #SAB 032-033 Late Night Shows Part 2 #SAB 034-035 Late Night Shows Part 3 #SAB 036+039 The Inner Sanctum #SAB 037-038 Mountain View #SAB 041-042 Sound & Vision Volume 4 #SAB 043-044 Apotheosis #SAB 045-046+066 Strippe d Down #SAB 047-048 Nighttown Vega #SAB 049-050 The Freak #SAB 051-052 The War #SAB 053-054 R U Xperienced #SAB 055 Gold Aftershow 1995 #SAB 056-057 Birthday Parade #SAB 058-061 Return To Zenith #SAB 062-063 Late Night Shows Part 4 #SAB 064-065 Cafe de Paris #SAB 067-069 A Night At The Bullring #SAB 070-071 1999 Revisited #SAB 072-073 Funkspectations #SAB 074 Late Night Shows Part 5 #SAB 075-076 Rock This Joint #SAB 077-078 R U Gonna Go My Way #SAB 079-080 Studio 54 #SAB 079-080+094-095 Viva Las Vegas 1999 #SAB 081-082 Ahoy Rotterdam #SAB 083-084 Funkball #SAB 085-086 Hypno Paradise #SAB 087-088 The Spanish -
Introduction to Black Hole Astrophysics, 2010 Gustavo E
Lecture Notes Introduction to Black Hole Astrophysics, 2010 Gustavo E. Romero Introduction to black hole astrophysics Gustavo E. Romero Instituto Argentino de Radioastronomía, C.C. 5, Villa Elisa (1894), and Facultad de Cs. Astronómicas y Geofísicas, UNLP, Paseo del Bosque S/N, (1900) La Plata, Argentina, [email protected] Es cosa averiguada que no se sabe nada, y que todos son ignorantes; y aun esto no se sabe de cierto, que, a saberse, ya se supiera algo: sospéchase. Quevedo Abstract. Black holes are perhaps the most strange and fascinating objects in the universe. Our understanding of space and time is pushed to its limits by the extreme conditions found in these objects. They can be used as natural laboratories to test the behavior of matter in very strong gravitational fields. Black holes seem to play a key role in the universe, powering a wide variety of phenomena, from X-ray binaries to active galactic nuclei. In these lecture notes the basics of black hole physics and astrophysics are reviewed. 1. Introduction Strictly speaking, black holes do not exist. Moreover, holes, of any kind, do not exist. You can talk about holes of course. For instance you can say: “there is a hole in the wall”. You can give many details of the hole: it is big, it is round shaped, light comes in through it. Even, perhaps, the hole could be such that you can go through to the outside. But I am sure that you do not think that there is a thing made out of nothingness in the wall.