American Journal of Astronomy and Astrophysics

Archive

Volume 7, Issue 2, June 2019

  • The Inertia of Light and the Isotropic and Anisotropic Properties of Electro-magnetic Mass

    Wim Vegt

    Issue: Volume 7, Issue 2, June 2019
    Pages: 18-32
    Received: 6 August 2019
    Accepted: 16 September 2019
    Published: 29 September 2019
    DOI: 10.11648/j.ajaa.20190702.11
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    Abstract: Photonics is the physical science of light based on the concept of “photons” introduced by Albert Einstein in the early 20th century. Einstein introduced this concept in the “particle-wave duality” discussion with Niels Bohr to demonstrate that even light has particle properties (mass and momentum) and wave properties (frequency). That concept beca... Show More
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  • On the Extent of the Existence of Broad Line Region in Seyfert Galaxies

    Oyor David Ifeanyichukwu, Ogwo Jemima Ngozi

    Issue: Volume 7, Issue 2, June 2019
    Pages: 33-38
    Received: 29 July 2019
    Accepted: 21 September 2019
    Published: 9 October 2019
    DOI: 10.11648/j.ajaa.20190702.12
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    Abstract: We present statistical results from a very large sample of Seyfert galaxies (217,272 galaxies) obtained from SDSS DR10 (Sloan Digital Sky Survey Data Release 10). From their observed parameters which includes; flux of hydrogen alpha (Hα), luminosity distance and velocity dispersion, we computed other relevant parameters such as; bolometric luminosi... Show More
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