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X-WR-CALDESC:Events for Physics & Astronomy
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DTSTART;TZID=America/Chicago:20171103T153000
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DTSTAMP:20171031T125841Z
CREATED:20170918T165300Z
LAST-MODIFIED:20171031T125841Z
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SUMMARY:Physics Colloquium: Federica Bianco
DESCRIPTION:“Detectable Changes in Astronomy”\nFederica Bianco\, Center for Cosmology & Particle Physics\, Center for Urban Science & Progress\, NYU \nThe way we do science in general\, and astronomy in particular\, is changing rapidly.  \nI will talk about the future of astronomy at the verge of the LSST survey. As the (newly elected) LSST Science Collaborations Coordinator\, I will discuss how the whole science community is preparing for this revolution: the largest astronomical survey ever planned\, which starting in 2022 will image the entire southern hemisphere sky once every 3 nights to depth and spatial resolution that approach that of the Hubble Space Telescope. I will pay particular attention to the transient sky\, as this is my domain of expertise and I am the co-chair of the Transients and Variable Starts LSST Science Collaboration.  \nFurther\, I will discuss how astronomy is infiltrating other sciences\, and how the skills of an astronomer can be put to the service of society in  Urban Science\, an emerging discipline. I will describe the work of the CUSP Urban Observatory\, where we use astronomical techniques to image and study city lightscapes to infer about the sociology\, ecology\, and economy of the city microcosm\, from energy consumption\, to pollution\, to human circadian rhythms.
URL:https://uwm.edu/physics/event/physics-colloquium-speaker-to-be-announced-2017-11-03/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
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DTSTART;TZID=America/Chicago:20171110T153000
DTEND;TZID=America/Chicago:20171110T163000
DTSTAMP:20171027T150221Z
CREATED:20170918T165302Z
LAST-MODIFIED:20171027T150221Z
UID:10384501-1510327800-1510331400@uwm.edu
SUMMARY:Physics Colloquium: Tom Quinn
DESCRIPTION:“The Cosmological Context of Star Formation”\nTom Quinn\, University of Washington \nOn the molecular cloud scale\, star formation is a very complicated process that involves gravitational collapse\, radiative transfer and magnetic fields on sub-parsec scales.  On the other hand\, there are a number of observed relationships between star formation and galactic and cosmic environment such as star formation rate – molecular surface density relationship in disk galaxies\, the stellar mass – halo mass relationship\, and the evolution of the star formation rate over time. \nModeling these relationships therefore requires simulations of enormous dynamic range and well motivated prescriptions for the star formation physics that is still unresolved.  Here\, I will describe techniques for capturing this dynamic range\, and models for star formation and its interaction with the interstellar medium.  I will also describe recent successes in understanding star formation histories as function galactic size\, merger history and cosmic time.
URL:https://uwm.edu/physics/event/physics-colloquium-speaker-to-be-announced-2017-11-10/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
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DTSTART;TZID=America/Chicago:20171117T153000
DTEND;TZID=America/Chicago:20171117T163000
DTSTAMP:20171109T155026Z
CREATED:20170918T165304Z
LAST-MODIFIED:20171109T155026Z
UID:10384503-1510932600-1510936200@uwm.edu
SUMMARY:Physics Colloquium: Alex Lazarian
DESCRIPTION:“Velocity Gradients as a New Way of Studying Galactic Magnetic Fields”\nAlex Lazarian\, UW-Madison \nI shall introduce three new techniques of magnetic field tracing.  The first two use Doppler-shifted emission lines and employs the gradients of velocity in order to trace magnetic fields in the diffuse interstellar media as well as to trace regions of star formation associated with the gravitational collapse.  The differences between these techniques is that they use different observationally available measures\, i.e. the first one uses the velocity centroids and the other uses velocity channel maps.  \nI shall provide the theoretical justification of the use of these measures\, its numerical testing as well as the comparison of the directions obtained with the velocity centroid gradients using GALFA HI data and those of magnetic field as traced by Planck as well as 13CO data and far infrared polarimetry.  I shall also discuss the third technique which employs the synchrotron intensity gradients that also trace magnetic field and\, unlike synchrotron polarization\, are insensitive to Faraday rotation.  I shall also show its correspondence with the magnetic field tracing by Planck and discuss the synergy of using this technique with synchrotron polarization studies.  I shall discuss the big promise of the new techniques both for the star formation and CMB foreground studies.
URL:https://uwm.edu/physics/event/physics-colloquium-speaker-to-be-announced-2017-11-17/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
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