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Institution

University of California, Santa Cruz

EducationSanta Cruz, California, United States
About: University of California, Santa Cruz is a education organization based out in Santa Cruz, California, United States. It is known for research contribution in the topics: Galaxy & Population. The organization has 15541 authors who have published 44120 publications receiving 2759983 citations. The organization is also known as: UCSC & UC, Santa Cruz.
Topics: Galaxy, Population, Star formation, Redshift, Planet


Papers
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Journal ArticleDOI
TL;DR: In this article, an exact sum rule is derived and used to estimate the threshold and cross section for the production of the new states in the teraelectronvolt energy region.
Abstract: If one assumes a spontaneously broken local supersymmetry, big-bang cosmology implies that the universe is filled with a gravitino (${g}_{\frac{3}{2}}$) gas---possibly its dominant constituent. From the observational bound on the cosmological mass density it follows that ${m}_{{g}_{\frac{3}{2}}}\ensuremath{\lesssim}1$ keV. Correspondingly, the supersymmetry breaking parameter $F$ satisfies $\sqrt{F}\ensuremath{\lesssim}2\ifmmode\times\else\texttimes\fi{}{10}^{3}$ TeV, requiring new supersymmetric physics in the teraelectronvolt energy region. An exact sum rule is derived and used to estimate the threshold and cross section for the production of the new states.

576 citations

Journal ArticleDOI
TL;DR: In this paper, the authors report findings from a survey of United States foreign exchange traders, finding that electronic-brokered transactions have risen substantially, mostly at the expense of traditional brokers.

575 citations

Journal ArticleDOI
Bruce Macintosh1, Bruce Macintosh2, James R. Graham3, Travis Barman4, R. J. De Rosa3, Quinn Konopacky5, Mark S. Marley6, Christian Marois7, Christian Marois8, Eric L. Nielsen2, Laurent Pueyo9, Abhijith Rajan10, Julien Rameau11, Didier Saumon12, Jason J. Wang3, Jennifer Patience10, Mark Ammons1, Pauline Arriaga13, Étienne Artigau11, Steven V. W. Beckwith3, J. Brewster, Sebastian Bruzzone14, Joanna Bulger10, Joanna Bulger15, Ben Burningham16, Ben Burningham6, Adam Burrows17, Christine Chen9, Eugene Chiang3, Jeffrey Chilcote18, Rebekah I. Dawson3, Ruobing Dong3, René Doyon11, Z. H. Draper8, Gaspard Duchêne3, Gaspard Duchêne19, Thomas M. Esposito13, Daniel C. Fabrycky20, Michael P. Fitzgerald13, Katherine B. Follette2, J. J. Fortney21, B. L. Gerard8, S. Goodsell22, A. Z. Greenbaum9, P. Hibon, Sasha Hinkley23, Tara Cotten24, Li-Wei Hung13, Patrick Ingraham, M. Johnson-Groh8, Paul Kalas3, David Lafrenière11, James E. Larkin13, J. Lee24, Michael R. Line21, Douglas Long9, Jérôme Maire18, Franck Marchis, Brenda C. Matthews8, Brenda C. Matthews7, Claire E. Max21, Stanimir Metchev25, Stanimir Metchev14, Max Millar-Blanchaer18, Tushar Mittal3, Caroline V. Morley21, Katie M. Morzinski4, R. Murray-Clay26, Rebecca Oppenheimer27, Dave Palmer1, Rahul Patel25, Marshall D. Perrin9, Lisa Poyneer1, Roman R. Rafikov17, Fredrik T. Rantakyrö, Emily L. Rice27, Patricio Rojo28, Alex Rudy21, Jean-Baptiste Ruffio2, Maria Teresa Ruiz28, Naru Sadakuni29, Leslie Saddlemyer8, M. Salama3, Dmitry Savransky30, Adam C. Schneider31, Anand Sivaramakrishnan9, Inseok Song24, Rémi Soummer9, S. Thomas, Gautam Vasisht32, James K. Wallace32, Kimberly Ward-Duong10, Sloane J. Wiktorowicz21, Schuyler Wolff9, Barry Zuckerman13 
02 Oct 2015-Science
TL;DR: Using the Gemini Planet Imager, a Jupiter-like planet is discovered orbiting the ~20-million-year-old star 51 Eridani at a projected separation of 13 astronomical units and has a methane signature and is probably the smallest exoplanet that has been directly imaged.
Abstract: Directly detecting thermal emission from young extrasolar planets allows measurement of their atmospheric compositions and luminosities, which are influenced by their formation mechanisms. Using the Gemini Planet Imager, we discovered a planet orbiting the ~20-million-year-old star 51 Eridani at a projected separation of 13 astronomical units. Near-infrared observations show a spectrum with strong methane and water-vapor absorption. Modeling of the spectra and photometry yields a luminosity (normalized by the luminosity of the Sun) of 1.6 to 4.0 × 10(-6) and an effective temperature of 600 to 750 kelvin. For this age and luminosity, "hot-start" formation models indicate a mass twice that of Jupiter. This planet also has a sufficiently low luminosity to be consistent with the "cold-start" core-accretion process that may have formed Jupiter.

575 citations

Journal ArticleDOI
TL;DR: The theory of /spl Lscr//spl Rscr/ servers enables computation of tight upper bounds on end-to-end delay and buffer requirements in a heterogeneous network, where individual servers may support different scheduling architectures and under different traffic models.
Abstract: We develop a general model, called latency-rate servers (/spl Lscr//spl Rscr/ servers), for the analysis of traffic scheduling algorithms in broadband packet networks. The behavior of an /spl Lscr//spl Rscr/ server is determined by two parameters-the latency and the allocated rate. Several well-known scheduling algorithms, such as weighted fair queueing, virtualclock, self-clocked fair queueing, weighted round robin, and deficit round robin, belong to the class of /spl Lscr//spl Rscr/ servers. We derive tight upper bounds on the end-to-end delay, internal burstiness, and buffer requirements of individual sessions in an arbitrary network of /spl Lscr//spl Rscr/ servers in terms of the latencies of the individual schedulers in the network, when the session traffic is shaped by a token bucket. The theory of /spl Lscr//spl Rscr/ servers enables computation of tight upper bounds on end-to-end delay and buffer requirements in a heterogeneous network, where individual servers may support different scheduling architectures and under different traffic models.

574 citations

Book ChapterDOI
01 Jan 1983

573 citations


Authors

Showing all 15733 results

NameH-indexPapersCitations
David J. Schlegel193600193972
David R. Williams1782034138789
John R. Yates1771036129029
David Haussler172488224960
Evan E. Eichler170567150409
Anton M. Koekemoer1681127106796
Mark Gerstein168751149578
Alexander S. Szalay166936145745
Charles M. Lieber165521132811
Jorge E. Cortes1632784124154
M. Razzano155515106357
Lars Hernquist14859888554
Aaron Dominguez1471968113224
Taeghwan Hyeon13956375814
Garth D. Illingworth13750561793
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202351
2022328
20212,157
20202,353
20192,209
20182,157