The galactic center: An interacting system of unusual sources

F. Yusef-Zadeh, Fulvio Melia, M. Wardle

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

The region bounded by the inner tens of light-years at the center of the Milky Way Galaxy contains five principal components that coexist within the central deep well of gravitational potential. These constituents are a black hole candidate (Sgr A*) with a mass equivalent to 2.6 ± 0.2 × 106 solar masses, a surrounding cluster of evolved stars, a complex of young stars, molecular and ionized gas clouds, and a powerful supernova-like remnant. The interaction of these components is responsible for many of the phenomena occurring in this complex and unique portion of the Galaxy. Developing a consistent picture of the primary interactions between the components at the Galactic center will improve our understanding of the nature of galactic nuclei in general, and will provide us with a better-defined set of characteristics of black holes. For example, the accretion of stellar winds by Sgr A* appears to produce far less radiation than indicated by estimates based on models of galactic nuclei.

Original languageEnglish (US)
Pages (from-to)85-91
Number of pages7
JournalScience
Volume287
Issue number5450
StatePublished - Jan 7 2000

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galactic nuclei
Milky Way Galaxy
stars
stellar winds
ionized gases
supernova remnants
molecular gases
gravitational fields
interactions
galaxies
radiation
estimates
gases

ASJC Scopus subject areas

  • General

Cite this

Yusef-Zadeh, F., Melia, F., & Wardle, M. (2000). The galactic center: An interacting system of unusual sources. Science, 287(5450), 85-91.

The galactic center : An interacting system of unusual sources. / Yusef-Zadeh, F.; Melia, Fulvio; Wardle, M.

In: Science, Vol. 287, No. 5450, 07.01.2000, p. 85-91.

Research output: Contribution to journalArticle

Yusef-Zadeh, F, Melia, F & Wardle, M 2000, 'The galactic center: An interacting system of unusual sources', Science, vol. 287, no. 5450, pp. 85-91.
Yusef-Zadeh F, Melia F, Wardle M. The galactic center: An interacting system of unusual sources. Science. 2000 Jan 7;287(5450):85-91.
Yusef-Zadeh, F. ; Melia, Fulvio ; Wardle, M. / The galactic center : An interacting system of unusual sources. In: Science. 2000 ; Vol. 287, No. 5450. pp. 85-91.
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