BEGIN:VCALENDAR PRODID:-//University of Illinois//Web Services Calendar//EN VERSION:2.0 CALSCALE:GREGORIAN BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120214T160000 DTEND;TZID=America/Chicago:20120214T160000 SUMMARY:Astrophysics Colloquium: NO COLLOQUIUM TODAY CREATED:20120207T150000Z LAST-MODIFIED:20120207T150000Z CATEGORIES:Colloquia ORGANIZER:mmoconno@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010115984893 UID:15984893@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120215T120000 DTEND;TZID=America/Chicago:20120215T120000 SUMMARY:CTA Theoretical Astrophysics and General Relativity Seminar: "Pro bing Gravity with Large-Scale Structure" - Fabian Schmidt (Caltech) CREATED:20111205T150000Z DESCRIPTION:Testing our theory of gravity\, General Relativity (GR)\, has become one of the main goals of cosmology\, motivated in part by the di scovery that our Universe is accelerating. Given that gravity is the mai n force governing the evolution of large-scale structure in the Universe \, the latter can in principle be used to put precision constraints on g ravity\, probing scales ten orders of magnitude larger than those of cla ssical Solar System tests. I will explain why this is a very challenging task\, and show how analytical models and numerical simulations in conj unction with current data have enabled us take first steps in this direc tion. I will also show the fascinating prospects for upcoming\, much lar ger data sets\, such as that from the Dark Energy Survey. LAST-MODIFIED:20120102T150000Z LOCATION:464 Loomis CATEGORIES:CTA Seminar CONTACT:Jon Thaler ORGANIZER:jjt@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010113119010 UID:13119010@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120215T153000 DTEND;TZID=America/Chicago:20120215T153000 SUMMARY:Physics Colloquium "Micromechanics: A new quantum technology" CREATED:20111128T150000Z DESCRIPTION:That an object can be in two distinct places simultaneously i s a consequence of quantum theory and a fact routinely invoked to accoun t for the behavior of electrons and atoms. Nevertheless\, these superpos itions are in conflict with our everyday experience. What is the largest and most tangible object that can be prepared in such a superposition? This question has motivated researchers to fabricate micron-scale mechan ical resonators and coax them towards the regime of quantum behavior. In deed micro-mechanical devices recently reached the quantum regime. In th is talk\, I will describe how we use electricity to achieve the exquisit e control and measurement of micromechanical resonators necessary to rea ch the quantum regime. Having entered this regime\, we are now able to p ursue many exciting ideas. We endeavor to use mechanical resonators as l ong-lived memories for the quantum states of electrical circuits. In add ition\, we are developing the technology to transfer quantum states betw een two incompatible systems via a mechanical intermediary. We may even be able to test quantum theory itself in an unexplored region of mass an d size scales. LAST-MODIFIED:20120209T150000Z LOCATION:141 Loomis Lab CATEGORIES:Physics Colloquium CONTACT:Marjorie Gamel 217-333-3762 ORGANIZER:mgamel@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010112809235 UID:12809235@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120217T160000 DTEND;TZID=America/Chicago:20120217T160000 SUMMARY:CosmoCoffee - A New Cosmological Distance Measure Using Active Ga lactic Nuclei CREATED:20120212T150000Z DESCRIPTION:Authors: D. Watson \, K. D. Denney \, M. Vestergaard \, T. M. Davis http://adsabs.harvard.edu/abs/2011ApJ...740L..49WAccurate distan ces to celestial objects are key to establishing the age and energy dens ity of the Universe and the nature of dark energy. A distance measure us ing active galactic nuclei (AGN) has been sought for more than forty yea rs\, as they are extremely luminous and can be observed at very large di stances. We report here the discovery of an accurate luminosity distance measure using AGN. We use the tight relationship between the luminosity of an AGN and the radius of its broad line region established via rever beration mapping to determine the luminosity distances to a sample of 38 AGN. All reliable distance measures up to now have been limited to mode rate redshift -- AGN will\, for the first time\, allow distances to be e stimated to z~4\, where variations of dark energy and alternate gravity theories can be probed. LAST-MODIFIED:20120213T150000Z LOCATION:Atlas Room\, Astronomy Building ORGANIZER:bdunne@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010116227929 UID:16227929@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120222T120000 DTEND;TZID=America/Chicago:20120222T120000 SUMMARY:CTA Theoretical Astrophysics and General Relativity Seminar CREATED:20111205T150000Z LAST-MODIFIED:20111205T150000Z LOCATION:464 Loomis CATEGORIES:CTA Seminar ORGANIZER:vpaschal@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010113119011 UID:13119011@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120222T153000 DTEND;TZID=America/Chicago:20120222T153000 SUMMARY:Physics Colloquium: "The Physics of Music & Musical Instruments" CREATED:20111215T150000Z DESCRIPTION:I have been teaching two lecture/demo/lab courses (a freshman "discovery" & an upper-level undergrad course) on the Physics of Music/ Musical Instruments for over a decade now\, which has been *great* fun\, but during this time\, a great many questions have also arisen - which have been truly fascinating to me to pursue... A few such questions are :Why is music seemingly *so* important to us human beings?Why do we like /enjoy music *so* much - are there in fact quantitative reasons for this ? Is music actually beneficial to us in any way\, or is it just "fluff" - i.e. "auditory cheesecake"\, as some have suggested...Why do we hear i n the frequency range (20 Hz - 20 KHz) that we do?Why not higher or lowe r? Why do we have the musical scale(s) that we do?Why do we have the mus ical instruments that we do?If intelligent life exists elsewhere in the universe\, would those beings also have music? If so\, what would their music sound like?Are there physics answers to these questions?Please com e to this colloquium talk and find out! LAST-MODIFIED:20120213T150000Z LOCATION:141 Loomis Lab CATEGORIES:Physics Colloquium CONTACT:Marjorie Gamel 217-333-3762 ORGANIZER:mgamel@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010113583204 UID:13583204@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120229T120000 DTEND;TZID=America/Chicago:20120229T120000 SUMMARY:CTA Theoretical Astrophysics and General Relativity Seminar CREATED:20111205T150000Z LAST-MODIFIED:20111205T150000Z LOCATION:464 Loomis CATEGORIES:CTA Seminar ORGANIZER:vpaschal@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010113119012 UID:13119012@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120229T153000 DTEND;TZID=America/Chicago:20120229T153000 SUMMARY:Physics Colloquium: No Colloquium March Meeting CREATED:20111215T150000Z LAST-MODIFIED:20111215T150000Z CATEGORIES:Physics Colloquium CONTACT:Marjorie Gamel 217-333-3762 ORGANIZER:mgamel@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010113583205 UID:13583205@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120306T160000 DTEND;TZID=America/Chicago:20120306T160000 SUMMARY:Astrophysics Colloquium: Adrienne Erickcek\, University of Toro nto CREATED:20120105T150000Z LAST-MODIFIED:20120105T150000Z LOCATION:134 Astronomy CATEGORIES:Colloquia CONTACT:Charles Gammie 333-8646 ORGANIZER:gammie@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010114507503 UID:14507503@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120307T120000 DTEND;TZID=America/Chicago:20120307T120000 SUMMARY:CTA Theoretical Astrophysics and General Relativity Seminar CREATED:20111205T150000Z LAST-MODIFIED:20111205T150000Z LOCATION:464 Loomis CATEGORIES:CTA Seminar ORGANIZER:vpaschal@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010113119013 UID:13119013@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120307T153000 DTEND;TZID=America/Chicago:20120307T153000 SUMMARY:Physics Colloquium CREATED:20111219T150000Z LAST-MODIFIED:20111219T150000Z CATEGORIES:Physics Colloquium CONTACT:Marjorie Gamel 217-333-3762 ORGANIZER:mgamel@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010113752682 UID:13752682@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120314T120000 DTEND;TZID=America/Chicago:20120314T120000 SUMMARY:CTA Theoretical Astrophysics and General Relativity Seminar CREATED:20111205T150000Z LAST-MODIFIED:20111205T150000Z LOCATION:464 Loomis CATEGORIES:CTA Seminar ORGANIZER:vpaschal@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010113119014 UID:13119014@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120314T153000 DTEND;TZID=America/Chicago:20120314T153000 SUMMARY:Physics Colloquium CREATED:20111219T150000Z LAST-MODIFIED:20120209T150000Z LOCATION:141 Loomis Lab CATEGORIES:Physics Colloquium CONTACT:Marjorie Gamel 217-333-3762 ORGANIZER:mgamel@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010113752685 UID:13752685@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120315T160000 DTEND;TZID=America/Chicago:20120315T160000 SUMMARY:Astrophysics Colloquium: Yoram Lithwick\, University of Toronto\ , CITA: " Secular Chaos: Formation of Hot Jupiters and the Organization of Planetary Systems" CREATED:20120105T150000Z DESCRIPTION:In a planetary system with well-spaced planets\, there is a n onlinear instability that can lead to chaotic behaviour. One of the pla nets can gradually become unstable\, in which case its orbit becomes hig hly eccentric. This "secular chaos" is known to be responsible for the eventual destabilization of Mercury in our own Solar System. Here I foc us on systems with multiple giant planets. I show that after an extende d period of eccentricity diffusion\, the inner planet's pericentre can a pproach the star to within a few stellar radii. Strong tidal interaction s with the star then pull the planet inward\, creating a hot Jupiter. I n contrast to other proposed channels for the production of hot Jupiters \, such a scenario (which I term "secular migration") explains a range o f observations: the pile-up of hot Jupiters at 3-day orbital periods\, t he fact that hot Jupiters are in general less massive than other RV plan ets\, that they may have misaligned inclinations with respect to stellar spin\, and that they have few easily detectable companions (but may hav e giant companions in distant orbits).I will also show that if an unstab le planet escapes the influence of the other planets\, the remaining pla netary system becomes increasingly stable. This may explain the stabl e architecture of observed systems. LAST-MODIFIED:20120209T150000Z LOCATION:134 Astronomy CATEGORIES:Colloquia CONTACT:Charles Gammie 333-8646 ORGANIZER:gammie@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010114507504 UID:14507504@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120321T083000 DTEND;TZID=America/Chicago:20120321T083000 SUMMARY:Physics Colloquium CREATED:20111219T150000Z LAST-MODIFIED:20111219T150000Z CATEGORIES:Physics Colloquium CONTACT:Marjorie Gaeml 217=333-3762 ORGANIZER:mgamel@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010113752687 UID:13752687@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120321T120000 DTEND;TZID=America/Chicago:20120321T120000 SUMMARY:CTA Theoretical Astrophysics and General Relativity Seminar CREATED:20111205T150000Z LAST-MODIFIED:20111205T150000Z LOCATION:464 Loomis CATEGORIES:CTA Seminar ORGANIZER:vpaschal@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010113119015 UID:13119015@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120327T160000 DTEND;TZID=America/Chicago:20120327T160000 SUMMARY:Astrophysics Colloquium: Julie Comerford\, University of Texas-A ustin CREATED:20120105T150000Z LAST-MODIFIED:20120105T150000Z LOCATION:134 Astronomy CATEGORIES:Colloquia CONTACT:Charles Gammie 333-8646 ORGANIZER:gammie@ilinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010114507505 UID:14507505@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120328T120000 DTEND;TZID=America/Chicago:20120328T120000 SUMMARY:CTA Theoretical Astrophysics and General Relativity Seminar CREATED:20111205T150000Z LAST-MODIFIED:20111205T150000Z LOCATION:464 Loomis CATEGORIES:CTA Seminar ORGANIZER:vpaschal@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010113119016 UID:13119016@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120328T153000 DTEND;TZID=America/Chicago:20120328T153000 SUMMARY:Physics Colloquium: Axel Lecture: CREATED:20110930T140000Z LAST-MODIFIED:20110930T140000Z LOCATION:141 Loomis CATEGORIES:Physics Colloquium CONTACT:Marjorie Gamel 217-333-3762 ORGANIZER:mgamel@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010110197622 UID:10197622@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120403T160000 DTEND;TZID=America/Chicago:20120403T160000 SUMMARY:Astrophysics Colloquium: Stella Offner\, Harvard-Smithsonian Cen ter CREATED:20120105T150000Z LAST-MODIFIED:20120105T150000Z LOCATION:134 Astronomy CATEGORIES:Colloquia CONTACT:Charles Gammie 333-8646 ORGANIZER:gammie@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010114507506 UID:14507506@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120404T120000 DTEND;TZID=America/Chicago:20120404T120000 SUMMARY:CTA Theoretical Astrophysics and General Relativity Seminar CREATED:20111205T150000Z LAST-MODIFIED:20111205T150000Z LOCATION:464 Loomis CATEGORIES:CTA Seminar ORGANIZER:vpaschal@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010113119017 UID:13119017@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120404T153000 DTEND;TZID=America/Chicago:20120404T153000 SUMMARY:Physics Colloquium CREATED:20111219T150000Z LAST-MODIFIED:20111219T150000Z LOCATION:141 Loomis Laboratory CATEGORIES:Physics Colloquium CONTACT:Marjorie Gamel 217-333-3762 ORGANIZER:mgamel@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010113752689 UID:13752689@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120410T160000 DTEND;TZID=America/Chicago:20120410T160000 SUMMARY:Astrophysics Colloquium: Alyson Brooks\, University of Wisconsin -Madison CREATED:20120105T150000Z LAST-MODIFIED:20120105T150000Z LOCATION:134 Astronomy CATEGORIES:Colloquia CONTACT:Charles Gammie 333-8646 ORGANIZER:gammie@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010114507507 UID:14507507@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120411T120000 DTEND;TZID=America/Chicago:20120411T120000 SUMMARY:CTA Theoretical Astrophysics and General Relativity Seminar CREATED:20111205T150000Z LAST-MODIFIED:20111205T150000Z LOCATION:464 Loomis CATEGORIES:CTA Seminar ORGANIZER:vpaschal@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010113119018 UID:13119018@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120411T153000 DTEND;TZID=America/Chicago:20120411T153000 SUMMARY:Physics Colloquium CREATED:20111219T150000Z LAST-MODIFIED:20111219T150000Z LOCATION:141 Loomis Laboratory CATEGORIES:Physics Colloquium CONTACT:Marjorie Gamel 217-333-3762 ORGANIZER:mgamel@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010113755467 UID:13755467@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120418T120000 DTEND;TZID=America/Chicago:20120418T120000 SUMMARY:CTA Theoretical Astrophysics and General Relativity Seminar CREATED:20111205T150000Z LAST-MODIFIED:20111205T150000Z LOCATION:464 Loomis CATEGORIES:CTA Seminar ORGANIZER:vpaschal@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010113119019 UID:13119019@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120418T153000 DTEND;TZID=America/Chicago:20120418T153000 SUMMARY:Physics Colloquium CREATED:20120209T150000Z LAST-MODIFIED:20120209T150000Z LOCATION:141 Loomis Lab CATEGORIES:Physics Colloquium CONTACT:Marjorie M. Gamel 217-333-3762 ORGANIZER:mgamel@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010116095099 UID:16095099@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120425T120000 DTEND;TZID=America/Chicago:20120425T120000 SUMMARY:CTA Theoretical Astrophysics and General Relativity Seminar CREATED:20111205T150000Z LAST-MODIFIED:20120108T150000Z LOCATION:464 Loomis CATEGORIES:CTA Seminar CONTACT:Jon Thaler ORGANIZER:jjt@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010113119020 UID:13119020@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120425T153000 DTEND;TZID=America/Chicago:20120425T153000 SUMMARY:Physics Colloquium: CREATED:20120209T150000Z LAST-MODIFIED:20120209T150000Z LOCATION:141 Loomis CATEGORIES:Physics Colloquium CONTACT:Marjorie M. Gamel 217-333-3762 ORGANIZER:mgamel@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010116095100 UID:16095100@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120502T120000 DTEND;TZID=America/Chicago:20120502T120000 SUMMARY:CTA Theoretical Astrophysics and General Relativity Seminar CREATED:20111205T150000Z LAST-MODIFIED:20111205T150000Z LOCATION:464 Loomis CATEGORIES:CTA Seminar ORGANIZER:vpaschal@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010113119021 UID:13119021@illinois.edu END:VEVENT BEGIN:VEVENT DTSTAMP:20120214T151919Z DTSTART;TZID=America/Chicago:20120502T153000 DTEND;TZID=America/Chicago:20120502T153000 SUMMARY:Physics Colloquium: CREATED:20120209T150000Z LAST-MODIFIED:20120212T150000Z LOCATION:141 Loomis Lab CATEGORIES:Physics Colloquium CONTACT:Marjorie M. Gamel 217-333-3762 ORGANIZER:mgamel@illinois.edu URL:http://illinois.edu/calendar/detail/701?key=200001012000010116095101 UID:16095101@illinois.edu END:VEVENT END:VCALENDAR