20 research outputs found

    From/To: Eddie Couch (Chalk\u27s reply filed first)

    Get PDF

    From/To: Eddie G. Couch (Chalk\u27s reply filed first)

    Get PDF

    Catching Element Formation In The Act

    Full text link
    Gamma-ray astronomy explores the most energetic photons in nature to address some of the most pressing puzzles in contemporary astrophysics. It encompasses a wide range of objects and phenomena: stars, supernovae, novae, neutron stars, stellar-mass black holes, nucleosynthesis, the interstellar medium, cosmic rays and relativistic-particle acceleration, and the evolution of galaxies. MeV gamma-rays provide a unique probe of nuclear processes in astronomy, directly measuring radioactive decay, nuclear de-excitation, and positron annihilation. The substantial information carried by gamma-ray photons allows us to see deeper into these objects, the bulk of the power is often emitted at gamma-ray energies, and radioactivity provides a natural physical clock that adds unique information. New science will be driven by time-domain population studies at gamma-ray energies. This science is enabled by next-generation gamma-ray instruments with one to two orders of magnitude better sensitivity, larger sky coverage, and faster cadence than all previous gamma-ray instruments. This transformative capability permits: (a) the accurate identification of the gamma-ray emitting objects and correlations with observations taken at other wavelengths and with other messengers; (b) construction of new gamma-ray maps of the Milky Way and other nearby galaxies where extended regions are distinguished from point sources; and (c) considerable serendipitous science of scarce events -- nearby neutron star mergers, for example. Advances in technology push the performance of new gamma-ray instruments to address a wide set of astrophysical questions.Comment: 14 pages including 3 figure

    Catching element formation in the act

    Get PDF
    Gamma-ray astronomy explores the most energetic photons in nature to address some of the most pressing puzzles in contemporary astrophysics. It encompasses a wide range of objects and phenomena: stars, supernovae, novae, neutron stars, stellar-mass black holes, nucleosynthesis, the interstellar medium, cosmic rays and relativistic-particle acceleration, and the evolution of galaxies. MeV gamma-rays provide a unique probe of nuclear processes in astronomy, directly measuring radioactive decay, nuclear de-excitation, and positron annihilation. The substantial information carried by gamma-ray photons allows us to see deeper into these objects, the bulk of the power is often emitted at gamma-ray energies, and radioactivity provides a natural physical clock that adds unique information. New science will be driven by time-domain population studies at gamma-ray energies. This science is enabled by next-generation gamma-ray instruments with one to two orders of magnitude better sensitivity, larger sky coverage, and faster cadence than all previous gamma-ray instruments. This transformative capability permits: (a) the accurate identification of the gamma-ray emitting objects and correlations with observations taken at other wavelengths and with other messengers; (b) construction of new gamma-ray maps of the Milky Way and other nearby galaxies where extended regions are distinguished from point sources; and (c) considerable serendipitous science of scarce events -- nearby neutron star mergers, for example. Advances in technology push the performance of new gamma-ray instruments to address a wide set of astrophysical questions

    \u3ci\u3ePeople Made New\u3c/i\u3e

    No full text
    Eddie Couch\u27s sermon, People Made New. This sermon on Romans 5:6-11 is part 5 of the 14 part series, A Study of Romans, and was preached Sunday evening, 13 October 1991, at Prestoncrest Church of Christ in Dallas, Texas

    \u3ci\u3eGetting more out of our personal Bible study\u3c/i\u3e

    No full text
    Eddie Couch\u27s sermon, Getting more out of our personal Bible study. This sermon on 2 Timothy 3:16-17 was preached Sunday evening, 21 March 1993, at Prestoncrest Church of Christ in Dallas, Texas

    \u3ci\u3eThis Grace Also\u3c/i\u3e

    No full text
    Eddie Couch\u27s sermon, This Grace Also. This sermon on 2 Corinthians 8:1-15 was preached Sunday evening, 5 February 1995, at Prestoncrest Church of Christ in Dallas, Texas

    \u3ci\u3eWhat I see as the future of Prestoncrest\u3c/i\u3e

    No full text
    Eddie Couch\u27s sermon, What I see as the future of Prestoncrest. This sermon on 1 Thessalonians 1:2-10 was preached Sunday evening, 16 June 1996, at Prestoncrest Church of Christ in Dallas, Texas
    corecore