Proper Motion of the Compact, Nonthermal Radio Source in the Galactic Center, Sagittarius A*

  title={Proper Motion of the Compact, Nonthermal Radio Source in the Galactic Center, Sagittarius A*},
  author={D. Backer and R. Sramek},
  journal={The Astrophysical Journal},
  • D. Backer, R. Sramek
  • Published 1999
  • Physics
  • The Astrophysical Journal
  • Proper motions and radial velocities of luminous infrared stars in the Galactic center have provided strong evidence for a dark mass of 2.5 × 106 M☉ in the central 0.05 pc of the Galaxy. The leading hypothesis for this mass is a black hole. High angular resolution measurements at radio wavelengths find a compact radio source, Sagittarius (Sgr) A*, that is either the faint glow from a small amount of material accreting onto the hole with low radiative efficiency or a miniature active galactic… CONTINUE READING
    91 Citations

    Figures and Tables from this paper.

    The Proper Motion of Sagittarius A*. I. First VLBA Results
    • 189
    • Highly Influenced
    • PDF
    The Stellar Cusp around the Supermassive Black Hole in the Galactic Center
    • 424
    • Highly Influenced
    • PDF
    The galactic center: An interacting system of unusual sources
    • 42
    • PDF
    VLBA Observations of Astrometric Reference Sources in the Galactic Center
    • 26
    • Highly Influenced
    • PDF
    Chandra X-Ray Spectroscopic Imaging of Sagittarius A* and the Central Parsec of the Galaxy
    • 571
    • PDF


    Stellar proper motions in the central 0.1 PC of the galaxy
    • 272
    • Highly Influential
    High Proper-Motion Stars in the Vicinity of Sagittarius A*: Evidence for a Supermassive Black Hole at the Center of Our Galaxy
    • 406
    • Highly Influential
    • PDF
    7 Millimeter VLBA Observations of Sagittarius A
    • 40
    • Highly Influential
    • PDF
    Anisotropy in the angular broadening of Sagittarius A* at the Galactic center
    • 38
    • Highly Influential
    Radio Observations of Sgr A
    • 7
    • Highly Influential
    High-resolution VLBA imaging of the radio source Sgr A* at the Galactic Centre
    • 33
    • Highly Influential
    Diameter and Proper Motion of SGR A
    • 13