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  • Space Radiation  (1)
  • maximum entropy  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Maximum Entropy imaging of comptel data (1995)
    Springer
    Experimental astronomy 6 (1995), S. 97-102 
    Details
    ISSN: 1572-9508
    Keywords: gamma-ray astronomy ; image processing ; maximum entropy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The Maximum Entropy method is a practical technique for generating intensity skymaps from Compton-telescope data. The application of the method to COMPTEL data for point sources and large-scale emission is described. New developments in the method are illustrated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00419263
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    Paper (German National Licenses)
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  • 2
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    Evidence for COMPTEL detections of low-energy gamma rays from HVC complexes (1997)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Observational evidence of extended MeV emissions that may be associated with high velocity clouds (HVCs) is reported on. Based on observations acquired between 1991 and 1996 with the Compton telescope (COMPTEL), evidence is found for intense gamma ray radiation at 0.75 to 3 MeV from the general direction of two HVC regions. One bright gamma ray excess is located between the HVC complexes M and A, adjacent to the Lockman hole and is seen to approximately cover a sky area of exceptionally low H I column densities. A second source is detected at the high velocity end of complex C near the Draco Nebula. Both gamma ray excesses appear to consist of a time variable source and a diffuse emission component. The enhanced diffuse soft X-rays seen by Rosat from both HVC regions may be closely related to the gamma ray emission in terms of bremsstrahlung arising from HVC interactions with the galactic disk or lower halo.
    Keywords: Space Radiation
    Type: Proceedings of 2nd INTEGRAL Workshop 'The Transparent Universe'; 119-122; ESA-SP-382
    Format: text
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    NASA TECHNICAL REPORTS
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