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  • 1
    Publication Date: 2018-06-06
    Description: This paper describes the development of a Framework for benchmarking and comparing signal-extraction and noise-interference-removal methods that are applicable to interferometric Gravitational Wave detector systems. The primary use is towards comparing signal and noise extraction techniques at LISA frequencies from multiple (possibly confused) ,gravitational wave sources. The Framework includes extensive hybrid learning/classification algorithms, as well as post-processing regularization methods, and is based on a unique plug-and-play (component) architecture. Published methods for signal extraction and interference removal at LISA Frequencies are being encoded, as well as multiple source noise models, so that the stiffness of GW Sensitivity Space can be explored under each combination of methods. Furthermore, synthetic datasets and source models can be created and imported into the Framework, and specific degraded numerical experiments can be run to test the flexibility of the analysis methods. The Framework also supports use of full current LISA Testbeds, Synthetic data systems, and Simulators already in existence through plug-ins and wrappers, thus preserving those legacy codes and systems in tact. Because of the component-based architecture, all selected procedures can be registered or de-registered at run-time, and are completely reusable, reconfigurable, and modular.
    Keywords: Astrophysics
    Type: LISA Science Analysis
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  • 2
    Publication Date: 2019-07-18
    Description: Pulsars and pulsar wind nebulae seen at gamma-ray energies offer insight into particle acceleration to very high energies. Pulsed emission provides information about the geometry and interaction processes in the magnetospheres of these rotating neutron stars, while the pulsar wind nebulae yield information high-energy particles interacting with their surroundings. During the next decade, a number of new and expanded gamma-ray facilities will become available for pulsar studies, including AGILE and GLAST in space and a number of higher-energy ground-based systems. This review describes the capabilities of such observatories to answer some of the open questions about the highest-energy processes involving neutron stars.
    Keywords: Astrophysics
    Type: 363rd Heraeus Seminar, "Neutron Stars and Pulsars about 40 Years after their Discovery; May 15, 2006 - May 19, 2006; Bad Honnef; Germany
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  • 3
    Publication Date: 2019-07-13
    Description: The design of spaceborne high-energy (E is greater than 100 MeV) gamma-ray detectors depends on two principal factors: (1) the basic physics of detecting and measuring the properties of the gamma rays; and (2) the constraints of operating such a detector in space for an extended period. Improvements in technology have enabled major advances in detector performance, as illustrated by two successful instruments, EGRET on the Compton Gamma Ray Observatory and LAT on the Fermi Gamma-ray Space Telescope.
    Keywords: Astrophysics
    Type: GSFC-E-DAA-TN32820 , Comptes Rendus Physique (ISSN 1631-0705); 16; 7-Jun; 600-609
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  • 4
    Publication Date: 2019-12-24
    Description: No abstract available
    Keywords: Earth Resources and Remote Sensing
    Type: JPL-CL-16-2126 , Princeton University Seminar; May 25, 2016; Princeton, NJ; United States
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  • 5
    Publication Date: 2019-08-08
    Description: No abstract available
    Keywords: Earth Resources and Remote Sensing
    Type: JPL-CL-16-0989 , IEEE Aerospace Conference; Mar 05, 2016 - Mar 12, 2016; Big Sky, MT; United States
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  • 6
    Publication Date: 2019-12-24
    Description: No abstract available
    Keywords: Earth Resources and Remote Sensing
    Type: JPL-CL-16-2273 , HyspIRI Data Product Symposium; Jun 01, 2016 - Jun 03, 2016; Greenbelt, MD; United States
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  • 7
    Publication Date: 2019-10-05
    Description: The European Space Observatory INTEGRAL has been providing excellent results on X-ray and ray astronomy since its launch in 2002. Among the most important results are the spectroscopy and imaging measurements of celestial -ray sources, including mapping the 511 keV radiation from the Galactic plane. However, the nature of the 511 keV positron annihilation line around the Galactic Center region is still a mystery. Similarly, the structure and nature of the Galactic Center supermassive black hole and its surroundings, as well as the structure of heavily populated sky regions such as Cygnus and Carina in -rays, remain unclear. We present a concept of a potential next-generation -ray telescope with the major science objectives: a) solve the mystery of the Galactic Center region 511 keV positron annihilation line by mapping the Galactic Center region with high energy (〈1% FWHM) and angular (〈 10 arcmin) resolution and with line sensitivity 〈10-5 ph cm-2 s-1; b) understand the nature of the Galactic Center supermassive black hole environment by creating a high-resolution spectral and intensity map of the surrounding region in 0.1 20 MeV rays; and c) explore Galactic chemical evolution and sites of explosive element synthesis by conducting high-sensitivity measurements of nuclear lines from Type 1a supernovae and other objects. The instrument is based on a novel high energy and position resolution CdZnTe Imager, coded aperture mask, and heavy-scintillator shield, and can be considered for a NASA Explorer mission.
    Keywords: Astrophysics
    Type: GSFC-E-DAA-TN71327 , International Cosmic Ray Conference; Jul 24, 2019 - Aug 01, 2019; Madison, Wisconson; United States
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