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Nature
Article . 1990 . Peer-reviewed
License: Springer TDM
Data sources: Crossref
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Caltech Authors
Article . 1990
Data sources: Caltech Authors
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Black hole or no black hole?

Authors: Phinney, E. S.;

Black hole or no black hole?

Abstract

Astronomers are among the most international of scientists. Yet chauvinism surfaces on a cosmic scale where the anxious search for a massive black hole at the centre of our Galaxy is concerned. The prodigious amounts of energy emitted from tiny regions at the centres of some nearby galaxies imply that they contain accreting black holes of masses ranging from 10^5 to 10^8 times the mass of our Sun (M⊙).The orbits of stars in the unspectacular centre of our nearest sister galaxy (Messier 31, visible to the naked eye in Andromeda) indicate that it contains at least 10^7 M⊙ in a form so dark' and concentrated as to suggest the presence of a black hole of about 10^6M⊙. Surely, some astronomers argue, nature cannot have been so unkind as to deprive our own magnificent Milky Way of such an ornament? On page 45 of this issue, Yusef-Zadeh, Morris and Ekers report the latest result of the scrutiny of the centre of the Milky Way.

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530, 520

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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