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X-ORIGINAL-URL:https://inpa.lbl.gov
X-WR-CALDESC:Events for INPA
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BEGIN:DAYLIGHT
TZOFFSETFROM:-0800
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TZNAME:PDT
DTSTART:20180311T100000
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TZOFFSETTO:-0800
TZNAME:PST
DTSTART:20181104T090000
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190130T120000
DTEND;TZID=America/Los_Angeles:20190130T130000
DTSTAMP:20260404T223648
CREATED:20190118T190235Z
LAST-MODIFIED:20190130T174941Z
UID:496-1548849600-1548853200@inpa.lbl.gov
SUMMARY:SPECIAL - Brittany Kamai (CalTech) - Looking further back with LIGO
DESCRIPTION:Gravitational wave detectors require constant innovation in detector technology to meet the growing needs of the astrophysics community. With improved sensitivity\, we can move beyond the measurements in the local universe and perform precision tests of cosmology. I will discuss our efforts to reduce the amount of low frequency noise within the LIGO detectors\, which has a direct impact on our ability to measure heavier mass black hole mergers further out into the universe. I will focus on a proposed major upgrade to the LIGO detectors that will use silicon optics cooled to cryogenic temperatures. Additionally\, I will discuss ideas for a passive seismic isolation system that uses advances in seismic cloaking technology. These improvements will extend distance measurements on gravitational wave mergers from the local universe out to much higher redshifts.
URL:https://inpa.lbl.gov/event/special-brittany-kamai-caltech/
LOCATION:INPA Common Room\, 50-5026
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190125T120000
DTEND;TZID=America/Los_Angeles:20190125T130000
DTSTAMP:20260404T223648
CREATED:20181003T214506Z
LAST-MODIFIED:20190417T151057Z
UID:450-1548417600-1548421200@inpa.lbl.gov
SUMMARY:NO INPA SEMINAR MTG
DESCRIPTION:
URL:https://inpa.lbl.gov/event/anna-ijjas-harvard-cfa/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190118T120000
DTEND;TZID=America/Los_Angeles:20190118T130000
DTSTAMP:20260404T223648
CREATED:20181003T214412Z
LAST-MODIFIED:20190116T211131Z
UID:448-1547812800-1547816400@inpa.lbl.gov
SUMMARY:Silvia Scorza (Snolab\, Sudbury) - Updates from SNOLAB
DESCRIPTION:Astroparticle physics experiments searching for rare events\, such as neutrinoless double beta decay and dark matter particles interactions\, have to be shielded from background radiation that would interact and hide the physics of interest\, and have to exhibit a radioactive background as low as possible. Therefore\, underground site are preferred. Being protected from cosmic rays\, the underground environment provides the conditions necessary for experiments dealing with such rare or exotic interactions. \nSNOLAB is one such facility\, based at a depth of 2km in the Vale Creighton mine near Sudbury\, Ontario. The lab hosts a number of neutrino and dark matter experiments as well as new biology and genomic experiments making use of the unique facility.
URL:https://inpa.lbl.gov/event/silvia-scorza-snolab-sudbury/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190111T120000
DTEND;TZID=America/Los_Angeles:20190111T130000
DTSTAMP:20260404T223648
CREATED:20181003T214303Z
LAST-MODIFIED:20181003T214303Z
UID:446-1547208000-1547211600@inpa.lbl.gov
SUMMARY:Aleksandar Cikota (LBNL)
DESCRIPTION:TBA
URL:https://inpa.lbl.gov/event/aleksandar-cikota-lbnl/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190104T120000
DTEND;TZID=America/Los_Angeles:20190104T130000
DTSTAMP:20260404T223648
CREATED:20181207T193104Z
LAST-MODIFIED:20181207T193104Z
UID:486-1546603200-1546606800@inpa.lbl.gov
SUMMARY:Matt Shaw (JPL) - Silicon nanowire single photon detectors
DESCRIPTION:TBA
URL:https://inpa.lbl.gov/event/matt-shaw-jpl-silicon-nanowire-single-photon-detectors/
LOCATION:INPA Common Room\, 50-5026
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190104T120000
DTEND;TZID=America/Los_Angeles:20190104T130000
DTSTAMP:20260404T223648
CREATED:20181017T180240Z
LAST-MODIFIED:20181017T180240Z
UID:463-1546603200-1546606800@inpa.lbl.gov
SUMMARY:Holiday
DESCRIPTION:
URL:https://inpa.lbl.gov/event/holiday-3/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181228T120000
DTEND;TZID=America/Los_Angeles:20181228T130000
DTSTAMP:20260404T223648
CREATED:20181017T180159Z
LAST-MODIFIED:20181017T180159Z
UID:461-1545998400-1546002000@inpa.lbl.gov
SUMMARY:Holiday - Shutdown
DESCRIPTION:
URL:https://inpa.lbl.gov/event/holiday-shutdown/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181221T120000
DTEND;TZID=America/Los_Angeles:20181221T130000
DTSTAMP:20260404T223648
CREATED:20181017T180340Z
LAST-MODIFIED:20181017T180340Z
UID:465-1545393600-1545397200@inpa.lbl.gov
SUMMARY:Holiday - Shutdown
DESCRIPTION:
URL:https://inpa.lbl.gov/event/holiday-shutdown-2/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181214T120000
DTEND;TZID=America/Los_Angeles:20181214T130000
DTSTAMP:20260404T223648
CREATED:20181017T175956Z
LAST-MODIFIED:20181207T192951Z
UID:457-1544788800-1544792400@inpa.lbl.gov
SUMMARY:Kimmy Wu (KICP Chicago) - Delensing\, Neural Networks\, the H_0 problem — a perspective from the CMB
DESCRIPTION:The cosmic microwave background (CMB) contains a wealth of information about the early and the late universe. In this talk\, I will focus on the search of primordial gravitational waves. Specifically\, I will talk about “delensing” — constraining the lensing component in the CMB B-mode maps that we might reduce the soon-to-be major uncertainty of the r measurement in the BICEP/Keck experiments. For next-generation CMB experiments\, we will need higher signal-to-noise estimates of the lensing potential beyond the commonly-used quadratic estimator approach today for delensing. I will discuss a method to extract the lensing field using a convolutional neural network (1810.01483)\, that approaches maximum-likelihood lensing estimates in a broad range of angular scales. If I have time\, I will discuss the “H_0 problem”\, where the inferred expansion rate of the universe from the CMB (and a couple other probes) are significantly lower than direct measurements. I will look at it from the sound horizon perspective (1811.00537) and show how data from the South Pole telescope can probe potential new physics.
URL:https://inpa.lbl.gov/event/kimmy-wu-kicp-chicago/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181207T120000
DTEND;TZID=America/Los_Angeles:20181207T130000
DTSTAMP:20260404T223648
CREATED:20180917T155453Z
LAST-MODIFIED:20181207T191859Z
UID:438-1544184000-1544187600@inpa.lbl.gov
SUMMARY:Carlos García García (IFF\, Madrid) - Theoretical priors for quintessence
DESCRIPTION:Dark energy is a key unsolved problem. An enormous number of theories try to explain the accelerated expansion of the universe\, ranging from the simplicity of a cosmological constant to the inclusion of new gravitational fields that affect space-time dynamics. We need clever methods to test the landscape of theories to make the most of next-generation experiments. I will present a novel framework to study dark energy and apply it to general quintessence models\, reducing their functional freedom. Expanding the dark energy density as a truncated polynomial series\, we are able to reproduce the observables with less than 1% error\, with just 2 parameters. This economic yet precise description will allow dark energy to be constrained with next generation instruments in a general and efficient way.
URL:https://inpa.lbl.gov/event/carlos-garcia-garcia-iff-madrid/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181130T120000
DTEND;TZID=America/Los_Angeles:20181130T130000
DTSTAMP:20260404T223648
CREATED:20180917T155355Z
LAST-MODIFIED:20181128T223200Z
UID:436-1543579200-1543582800@inpa.lbl.gov
SUMMARY:Simon Foreman (CITA\, Toronto) - Gravitational lensing of line intensity maps
DESCRIPTION:Gravitational lensing of the cosmic microwave background (CMB) has emerged as a powerful cosmological probe\, made possible by the development and characterization of nearly-optimal estimators for extracting the lensing signal from temperature and polarization maps. One can ask whether similar tools can be applied to upcoming “intensity maps” of emission lines at various wavelengths (e.g. 21cm). In this talk\, I will present recent work in this direction\, focusing in particular on the impact of nonlinear gravitational clustering on standard CMB lensing estimators when applied to intensity maps. I will show how these nonlinearities can provide a significant contaminant to lensing reconstruction\, but will also describe how this contamination can largely be mitigated by modifying the lensing estimator. Finally\, I will present estimates for the detectability of lensing in ongoing and future intensity mapping surveys\, and highlight related work on reconstructing large-angle information in galaxy surveys and CMB maps.
URL:https://inpa.lbl.gov/event/simon-foreman-cita-toronto/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
ORGANIZER;CN="Kawana Yancey":MAILTO:kyancey@lbl.gov
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181123T120000
DTEND;TZID=America/Los_Angeles:20181123T130000
DTSTAMP:20260404T223648
CREATED:20181017T175717Z
LAST-MODIFIED:20181017T175717Z
UID:455-1542974400-1542978000@inpa.lbl.gov
SUMMARY:Holiday
DESCRIPTION:
URL:https://inpa.lbl.gov/event/holiday-2/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181116T120000
DTEND;TZID=America/Los_Angeles:20181116T130000
DTSTAMP:20260404T223648
CREATED:20180917T155219Z
LAST-MODIFIED:20181107T194052Z
UID:434-1542369600-1542373200@inpa.lbl.gov
SUMMARY:Andrej Dvornik (UNLV) - KiDS and biases
DESCRIPTION:The current ongoing large imaging surveys are an excellent tool for studying the origin and evolution of the Universe and the galaxy – dark matter connection\, using the weak gravitational lensing as the main probe. Using the predicting power of the halo model formalism\, the weak gravitational lensing (together with other large scale probes) can be used to constrain the origin of the scale dependence of the galaxy bias – the relation between the galaxies and the dark matter distribution\, as well as studying the dependence of the formation time of galaxies on their halo masses – so called assembly bias. In this talk I will present the KiDS survey and way it can be used to shine a light on the different aspects of galaxy-halo connection.
URL:https://inpa.lbl.gov/event/andrej-dvornik-unlv/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181109T120000
DTEND;TZID=America/Los_Angeles:20181109T130000
DTSTAMP:20260404T223648
CREATED:20180917T155113Z
LAST-MODIFIED:20181107T200037Z
UID:432-1541764800-1541768400@inpa.lbl.gov
SUMMARY:Douglas Finkbeiner (Harvard) - Making neural net classifiers more robust and explainable: Lessons from Adversarial AI
DESCRIPTION:As deep neural nets achieve ever greater successes\, efforts to break them and learn about their failure modes are also ramping up. Security experts and malicious actors are interested in weaknesses per se\, and we scientists are more interested in what we can learn about robustness to inputs somewhat different from training data. I will give examples of attacks and defenses\, and talk about a measure of credibility at inference time.
URL:https://inpa.lbl.gov/event/douglas-finkbeiner-harvard/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181102T120000
DTEND;TZID=America/Los_Angeles:20181102T130000
DTSTAMP:20260404T223648
CREATED:20181003T214654Z
LAST-MODIFIED:20181003T222849Z
UID:452-1541160000-1541163600@inpa.lbl.gov
SUMMARY:Marco Raveri (UChicago)
DESCRIPTION:TBA
URL:https://inpa.lbl.gov/event/marco-raveri-uchicago/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181005T120000
DTEND;TZID=America/Los_Angeles:20181005T130000
DTSTAMP:20260404T223648
CREATED:20180918T165541Z
LAST-MODIFIED:20181003T214034Z
UID:440-1538740800-1538744400@inpa.lbl.gov
SUMMARY:Arka Banerjee (Stanford) - Signatures of massive neutrinos on Large Scale Structure
DESCRIPTION:Neutrino oscillation experiments have shown that there are at least two massive neutrino eigenstates\, in a mass range that can produce observable signatures in current and future cosmological surveys. I will talk about the challenges and progress in correctly including the effects of massive neutrinos in N-body simulations of structure formation. Finally\, I will talk about how these simulations can be used to study novel effects in massive neutrino cosmology – in particular\, scale-dependent bias of nonlinear objects such as halos and voids on large scales.
URL:https://inpa.lbl.gov/event/arka-banerjee-stanford/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180824T120000
DTEND;TZID=America/Los_Angeles:20180824T130000
DTSTAMP:20260404T223648
CREATED:20180809T170858Z
LAST-MODIFIED:20180809T170858Z
UID:423-1535112000-1535115600@inpa.lbl.gov
SUMMARY:Jyoti Joshi (BNL) - Recent Results from MicroBooNE Liquid Argon TPC
DESCRIPTION:MicroBooNE is a large (85-ton active mass) liquid argon time projection chamber (LArTPC) experiment operating near the surface at Fermilab in Batavia\, Illinois. The detector observes neutrino interactions from the on-axis Booster Neutrino Beam (BNB) at short distance (470 m)\, enabling an investigation of the MiniBooNE low-energy excess as well as neutrino-argon cross section measurements. Another key purpose of the experiment is to gain experience with the operation and calibration of large LArTPC detectors in preparation for the SBN (Short Baseline Neutrino) program at Fermilab and DUNE (the Deep Underground Neutrino Experiment). We discuss the principal physics goals of MicroBooNE and highlight aspects related to operating a large LArTPC near the surface. The MicroBooNE LArTPC calibration program and different neutrino event reconstruction techniques are discussed\, and recent results from the experiment are presented.
URL:https://inpa.lbl.gov/event/jyoti-joshi-bnl-recent-results-from-microboone-liquid-argon-tpc-2/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180817T120000
DTEND;TZID=America/Los_Angeles:20180817T130000
DTSTAMP:20260404T223648
CREATED:20180809T170709Z
LAST-MODIFIED:20180815T154237Z
UID:420-1534507200-1534510800@inpa.lbl.gov
SUMMARY:Chris Benson (UCB) - Using MiniCLEAN and measurements of microphysical material properties in the vacuum ultraviolet regime to inform next-generation dark matter and neutrino detectors
DESCRIPTION:Single phase\, zero-field\, liquid noble gas scintillator detectors are a simple\, scalable and cost-effective approach for dark matter and neutrino detection. MiniCLEAN is a liquid argon dark matter detector located 6\,800 feet underground at SNOLAB in Canada. In addition to its role as a detector for dark matter searches\, MiniCLEAN also serves as a technology demonstrator for a scalable\, single-phase detector and is aimed at informing the design and sensitivity of monolithic\, large-scale\, next-generation dark matter and neutrino detectors. This presentation will provide an overview of the MiniCLEAN experiment and a summary of the author’s contributions to construction\, commissioning\, and analysis efforts. The results of a supporting wavelength shifting thin film R&D effort\, a technology important to several current and future dark matter and neutrino experiments\, will also be presented.
URL:https://inpa.lbl.gov/event/chris-benson-ucb-measurement-of-microphysical-material-properties-in-the-extreme-ultraviolet-regime-for-next-generation-neutrino-and-dark-matter-detectors/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180720T120000
DTEND;TZID=America/Los_Angeles:20180720T130000
DTSTAMP:20260404T223648
CREATED:20180711T231927Z
LAST-MODIFIED:20180711T231927Z
UID:416-1532088000-1532091600@inpa.lbl.gov
SUMMARY:Jyoti Joshi (BNL) - Recent Results from MicroBooNE Liquid Argon TPC
DESCRIPTION:MicroBooNE is a large (85-ton active mass) liquid argon time projection chamber (LArTPC) experiment operating near the surface at Fermilab in Batavia\, Illinois. The detector observes neutrino interactions from the on-axis Booster Neutrino Beam (BNB) at short distance (470 m)\, enabling an investigation of the MiniBooNE low-energy excess as well as neutrino-argon cross section measurements. Another key purpose of the experiment is to gain experience with the operation and calibration of large LArTPC detectors in preparation for the SBN (Short Baseline Neutrino) program at Fermilab and DUNE (the Deep Underground Neutrino Experiment). We discuss the principal physics goals of MicroBooNE and highlight aspects related to operating a large LArTPC near the surface. The MicroBooNE LArTPC calibration program and different neutrino event reconstruction techniques are discussed\, and recent results from the experiment are presented.
URL:https://inpa.lbl.gov/event/jyoti-joshi-bnl-recent-results-from-microboone-liquid-argon-tpc/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180621T120000
DTEND;TZID=America/Los_Angeles:20180621T130000
DTSTAMP:20260404T223648
CREATED:20180614T154745Z
LAST-MODIFIED:20180614T155145Z
UID:413-1529582400-1529586000@inpa.lbl.gov
SUMMARY:Ke-Jung (Ken) Chen (ASIAA) - The First Billion Years of the Universe - Rising Galaxies
DESCRIPTION:One of the paramount problems in modern astrophysics is to understand the end of the cosmic dark ages when the first stars\, supernovae\, black holes\, and galaxies transformed the simple early universe into a state of ever-increasing complexity. Modern cosmological simulations suggest that the hierarchical assembly of dark matter halos provided the gravitational wells that allowed the primordial gases to form stars and galaxies inside them. The first galaxies comprised of the first systems of stars gravitationally bound in dark matter halos are naturally recognized as the building blocks of early Universe. In this talk\, I will discuss the physical mechanics behind the first galaxy formation and present the predictions of their observational signatures which will be examined by the future observatories such as JWST and TMT.
URL:https://inpa.lbl.gov/event/ke-jung-ken-chen-asiaa-the-first-billion-years-of-the-universe-rising-galaxies/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180525T080000
DTEND;TZID=America/Los_Angeles:20180525T170000
DTSTAMP:20260404T223648
CREATED:20180525T003827Z
LAST-MODIFIED:20180525T003838Z
UID:409-1527235200-1527267600@inpa.lbl.gov
SUMMARY:No INPA Seminar This Week
DESCRIPTION:
URL:https://inpa.lbl.gov/event/no-inpa-seminar-this-week/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180518T120000
DTEND;TZID=America/Los_Angeles:20180518T130000
DTSTAMP:20260404T223648
CREATED:20180402T154429Z
LAST-MODIFIED:20180426T220952Z
UID:381-1526644800-1526648400@inpa.lbl.gov
SUMMARY:Alexey Drobizhev (UCB/LBNL)
DESCRIPTION:
URL:https://inpa.lbl.gov/event/alexey-drobizhev/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180511T120000
DTEND;TZID=America/Los_Angeles:20180511T130000
DTSTAMP:20260404T223648
CREATED:20180426T215632Z
LAST-MODIFIED:20180430T171544Z
UID:400-1526040000-1526043600@inpa.lbl.gov
SUMMARY:Shirley Li (SLAC) - DUNE as the next-generation solar neutrino experiment
DESCRIPTION:
URL:https://inpa.lbl.gov/event/shirley-li-slac-dune-as-the-next-generation-solar-neutrino-experiment/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180427T120000
DTEND;TZID=America/Los_Angeles:20180427T130000
DTSTAMP:20260404T223648
CREATED:20180314T154654Z
LAST-MODIFIED:20180425T170724Z
UID:367-1524830400-1524834000@inpa.lbl.gov
SUMMARY:Dan Dwyer (LBNL) - Demonstration of a true 3D micro-power sensor for liquid argon time projection chambers
DESCRIPTION:Time projection chambers (TPCs) based on the ionization of cryogenic liquids are a prominent tool for neutrino oscillation\, neutrinoless double beta decay\, and dark matter experiments. Over the past two years I have pursued the development of a novel charge readout sensor providing true 3D imaging of particle interactions in large-scale liquid argon TPCs. The sensor must meet stringent requirements on noise (<600 electron)\, power (<100 microwatts per channel)\, and scalability (digital multiplexing of 100\,000 channels per square meter)\, all at cryogenic temperatures. Such a scalable 3D micro-power sensor would enable operation of liquid argon TPCs in high-occupancy environments\, such as the near detector site of the Deep Underground Neutrino Experiment (DUNE). I will present my recent mad dash to a successful demonstration of 3D micro-power imaging of particle tracks in liquid argon\, and discuss what worked and what didn’t work along the way. I will also discuss the potential impact on upcoming neutrino measurements.
URL:https://inpa.lbl.gov/event/dan-dwyer-lbnl-tba-dune-upgrade-tpc-readout/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180420T120000
DTEND;TZID=America/Los_Angeles:20180420T130000
DTSTAMP:20260404T223648
CREATED:20180202T161329Z
LAST-MODIFIED:20180416T171943Z
UID:344-1524225600-1524229200@inpa.lbl.gov
SUMMARY:Rebecca Canning (Stanford) - Understanding Active Galactic Nuclei (AGN) in the most massive cosmic laboratories
DESCRIPTION:Supermassive Black Holes (SMBHs) lurk in the centers of all massive galaxies\, a fraction of these SMBHs are actively accreting and this can result in powerful outbursts which have important consequences for galaxy formation and evolution. However\, the conditions under which a SMBH becomes active and the manner in which it interacts with its environment are not well understood. Clusters of galaxies offer us wonderful cosmic laboratories in which we can observe these processes. I will discuss what observations of these massive galaxy clusters can tell us about the role of AGN feedback in both maintaining a delicate balance between heating and cooling and in searching for a casual link between SMBHs and galaxy co-evolution and detail the Cluster AGN Topography Survey which is undertaking a census of SMBH activity in massive galaxy clusters.
URL:https://inpa.lbl.gov/event/rebecca-canning-stanford/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180417T170000
DTEND;TZID=America/Los_Angeles:20180417T180000
DTSTAMP:20260404T223648
CREATED:20180411T184240Z
LAST-MODIFIED:20180416T171625Z
UID:390-1523984400-1523988000@inpa.lbl.gov
SUMMARY:Heidi Newberg (RPI) - Dwarf galaxies and dark matter in the Milky Way
DESCRIPTION:In the past fifteen years\, dozens of tidal streams of stars pulled from dwarf galaxies and globular clusters have been discovered in the Milky Way’s stellar halo. Recently\, it has been discovered that as the dwarf galaxies fall into our galaxy they perturb the stars in the disk\, causing wavelike disturbances that are seen in the densities and velocities of disk stars. These disturbances could be driving force behind spiral structure in galaxies. MilkyWay@home is a petaFLOPS scale volunteer computing platform that is mapping the densities of stars in the larger tidal streams in the stellar halo and using that information to measure the mass and density profile of both the stars and the dark matter in the progenitor dwarf galaxies\, using only information from the stars in the tidal streams. Eventually\, MilkyWay@home will fit the shape of the Galactic potential using tidal streams.
URL:https://inpa.lbl.gov/event/heidi-newbert-rpi-dwarf-galaxies-and-dark-matter-in-the-milky-way/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180413T120000
DTEND;TZID=America/Los_Angeles:20180413T130000
DTSTAMP:20260404T223648
CREATED:20180402T154118Z
LAST-MODIFIED:20180410T173652Z
UID:376-1523620800-1523624400@inpa.lbl.gov
SUMMARY:Helion Mas du Bourboux ( University of Utah) - Baryonic Acoustic Oscillations in SDSS and DESI using the intergalactic medium absorption
DESCRIPTION:We present the measurement of the Baryonic Acoustic Oscillation (BAO) scale from the correlation between absorption in the intergalactic medium and the positions of galaxies and quasars in the SDSS data and in the desi simulations. \nWe use the absorption by neutral Hydrogen and by Magnesium-II observed in quasar spectra to trace the underlying matter density fluctuations. Combined with galaxies and quasars\, these two tracers allow to measure the 3d cross-correlation of matter from a redshift of z = 0.5 up to a redshift of z = 2.4.
URL:https://inpa.lbl.gov/event/helion-mas-du-bourboux-quasars/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180406T120000
DTEND;TZID=America/Los_Angeles:20180406T130000
DTSTAMP:20260404T223648
CREATED:20180314T154601Z
LAST-MODIFIED:20180402T153516Z
UID:365-1523016000-1523019600@inpa.lbl.gov
SUMMARY:Vincent Fischer (UC Davis) - Accelerator Neutrino Neutron Interaction Experiment (ANNIE)
DESCRIPTION:The next generation of large scale neutrino detectors\, such as DUNE or Hyper-Kamiokande\, will heavily rely on a precise understanding of neutrino-nucleus interactions to reach their goal of measuring leptonic CP violation. Accounting for and reconstructing all final state particles\, especially neutrons\, created upon such interactions is thus crucial. This is the goal of the ANNIE experiment: Measuring the neutron abundance in the final state of neutrino-nucleus interactions in the energy domain relevant for oscillation experiments. With a volume of about 30 tons of pure water doped with gadolinium to enhance neutron tagging efficiency\, ANNIE will provide a measurement of the neutron yield of neutrino interactions as a function of the neutrino energy in the well-characterized Booster Neutrino Beam at Fermilab. The modularity of ANNIE will allow it to perform the very first live test of a novel kind of photodetectors called LAPPDs (Large Area Picosecond Photodetectors) in a neutrino detector to reconstruct neutrino interaction vertices through precision timing measurement. This seminar will describe the design and construction of the experiment\, along with the background measurement results from Phase~I and the plans for Phase~II.
URL:https://inpa.lbl.gov/event/vincent-fischer-uc-davis-tba-accelerator-neutrino-neutron-interaction-experiment-annie/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180326T120000
DTEND;TZID=America/Los_Angeles:20180326T130000
DTSTAMP:20260404T223648
CREATED:20180227T171324Z
LAST-MODIFIED:20180321T152158Z
UID:358-1522065600-1522069200@inpa.lbl.gov
SUMMARY:Dr. Leila Haegel (University of the Balearic Islands\, Spain) - Testing general relativity with gravitational waves
DESCRIPTION:Gravitational waves have been directly detected by the LIGO experiment in 2015. Since then\, five black holes and one neutron star binaries merging have been observed during the two observational runs. The measured signals already provided a large amount of physical results\, from the mass distribution of stellar-masses black holes to the short gamma-ray burst mechanisms through measurement of the expansion rate of the Universe and tests of general relativity. Both detection and analysis of gravitational waves rely on the simulation of the expected signal to be extracted from the noise. As the exact computation of gravitational waveforms is a computationally expensive resource\, physicists are building phenomenological models. I will review the process of designing such models as well as their impact on the physics extracted from the signals.
URL:https://inpa.lbl.gov/event/dr-leila-haegel-university-of-the-balearic-islands-spain/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180323T120000
DTEND;TZID=America/Los_Angeles:20180323T130000
DTSTAMP:20260404T223648
CREATED:20180119T191700Z
LAST-MODIFIED:20180319T200604Z
UID:336-1521806400-1521810000@inpa.lbl.gov
SUMMARY:Krista Lynne Smith (Stanford) - A New Regime of Optical Variability in AGN: Light Curves from Exoplanet Satellites
DESCRIPTION:The optical light curves of AGN provide a unique window into the conditions and behavior within the accretion disk. The development of a specialized pipeline for AGN science with the unparalleled photometry of exoplanet-hunting satellites allows us to explore new optical variability phenomena. Such data provide an opportunity for direct comparison with X-ray light curves\, and promise to inform models of both accretion physics and the relationship between X-ray and optical emitting regions in the central engine. These data will be critical in learning how to interpret AGN light curves from upcoming large variability surveys like LSST. Finally\, exoplanet mission data have enormous future promise for a multifaceted understanding of accretion processes\, including blazar jets and quasi-periodic oscillations.
URL:https://inpa.lbl.gov/event/krista-lynne-smith-stanford/
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