30,231 research outputs found

    FORTRAN program flow chart is automatically produced

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    Computer under control of the flo-tran program automatically produces and updates flowcharts of fortran program source decks fed to it. The flowcharts are produced on either 35mm film or paper

    Constraints on short, hard gamma-ray burst beaming angles from gravitational wave observations

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    The first detection of a binary neutron star merger, GW170817, and an associated short gamma-ray burst confirmed that neutron star mergers are responsible for at least some of these bursts. The prompt gamma-ray emission from these events is thought to be highly relativistically beamed. We present a method for inferring limits on the extent of this beaming by comparing the number of short gamma-ray bursts (SGRBs) observed electromagnetically with the number of neutron star binary mergers detected in gravitational waves. We demonstrate that an observing run comparable to the expected Advanced LIGO (aLIGO) 2016–2017 run would be capable of placing limits on the beaming angle of approximately \theta \in (2\buildrel{\circ}\over{.} 88,14\buildrel{\circ}\over{.} 15), given one binary neutron star detection, under the assumption that all mergers produce a gamma-ray burst, and that SGRBs occur at an illustrative rate of Rgrb=10 Gpc−3 yr−1{{ \mathcal R }}_{\mathrm{grb}}=10\,{\mathrm{Gpc}}^{-3}\,{\mathrm{yr}}^{-1}. We anticipate that after a year of observations with aLIGO at design sensitivity in 2020, these constraints will improve to \theta \in (8\buildrel{\circ}\over{.} 10,14\buildrel{\circ}\over{.} 95), under the same efficiency and SGRB rate assumptions

    Dedication to Dean Timothy L. Coggins: A Goodbye, and Thank You, to Tim Coggins

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    At the close of the 2014-15 academic year, the law school will say goodbye to one of our most valued faculty colleagues and administrative leaders, as Associate Dean for Library and Information Services Timothy Coggins retires. Dean Coggins has made some of the most significant contributions in recent memory to the enhanced stature of the law school. His impact has been deep and profound, not only within the law library and the delivery of information services, but more broadly throughout the law school community
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