Journal
RESEARCH IN ASTRONOMY AND ASTROPHYSICS
Volume 12, Issue 8, Pages 995-1020Publisher
NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
DOI: 10.1088/1674-4527/12/8/007
Keywords
Galaxy: center; black hole physics; X-rays; infrared radiation; ISM: clouds
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Funding
- US National Science Foundation [AST 09-09218]
- Direct For Mathematical & Physical Scien [909218] Funding Source: National Science Foundation
- Division Of Astronomical Sciences [909218] Funding Source: National Science Foundation
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This review summarizes a few of the frontiers of Galactic center research that are currently the focus of considerable activity and attention. It is aimed at providing a necessarily incomplete sketch of some of the timely work being done on phenomena taking place in, or originating in, the central few parsecs of the Galaxy, with particular attention to topics related to the Galactic black hole (GBH). We have chosen to expand on the following exciting topics: 1) the characterization and the implications for the variability of emission from the GBH, 2) the strong evidence for a powerful X-ray flare in the Galactic center within the past few hundred years, and the likelihood that the GBH is implicated in that event, 3) the prospects for detecting the shadow of the GBH, 4) an overview of the current state of research on the central S-star cluster, and what has been learned from the stellar orbits within that cluster, and 5) the current hypotheses for the origin of the G2 dust cloud that is projected to make a close passage by the GBH in 2013.
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