The Structure and Variability of Sagittarius A*: Zooming in to the Supermassive Black Hole at the Galactic Center

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dc.creatorYuan, Feng
dc.creatorZhao, Jun-Hui
dc.date2002-03-04
dc.date.accessioned2026-07-07T02:03:00Z
dc.date.available2026-07-07T02:03:00Z
dc.descriptionThe Galactic center provides a unique astrophysical laboratory for us to study various astrophysical processes. In this paper, we review and outline the latest results from observations of Sgr~A$^*$ in terms of source structure and variations in flux density. Sgr~A$^*$ phenomenon represents a typical case of low radiative efficiency accretion flow surrounding a supermassive black hole in low luminosity AGNs. Many pending astrophysical problems found from observations of Sgr A$^*$ have challenged the existing astrophysical theories. Current theoretical models of Sgr A$^*$ are also reviewed.
dc.description12 pages, 3 figures, to appear in "Astronomy and Chinese Astronomy: Present and Future --Mainland and Overseas Young Chinese Astronomer Colloquium"
dc.identifierhttps://arxiv.org/abs/astro-ph/0203050
dc.identifierhttp://arxiv.org/abs/astro-ph/0203050
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/4242
dc.subjectAstrophysics
dc.titleThe Structure and Variability of Sagittarius A*: Zooming in to the Supermassive Black Hole at the Galactic Center
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