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et
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\@endanenote 
\@doanenote {2}
macro:->Begelman,
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\@doanenote {3}
macro:->Wyithe,
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S.
B.,
\&
Loeb,
A.
{\it
Astrophys.
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{\bf
595},
614
(2003).
\@endanenote 
\@doanenote {4}
macro:->See
Loeb,
A.,
http://arxiv.org/abs/0909.0261
(2009),
and
references
therein.
\@endanenote 
\@doanenote {5}
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{\it
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\@endanenote 
\@doanenote {6}
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{\bf
99},
041103
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\@endanenote 
\@doanenote {7}
macro:->Blecha,
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Loeb,
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{\it
Mon.
Not.
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Tanaka,
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\@endanenote 
\@doanenote {8}
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{\it
Astrophys.
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{\bf
539},
L13
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Ferrarese,
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{\it
Astrophys.
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{\bf
539},
L9
(2000).
These
two
competing
papers
appeared
simultaneously
since
I
suggested
the
topic
to
their
lead
authors
at
the
same
time.
\@endanenote 
\@doanenote {9}
macro:->Magorrian,
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\@endanenote 
\@doanenote {10}
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{\it
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\@endanenote 
\@doanenote {11}
macro:->Milosavljevi{\'c},
M.,
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Loeb,
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\@endanenote 
\@doanenote {12}
macro:->Dietrich,
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de
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Astrof.
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\@endanenote 
\@doanenote {13}
macro:->See,
e.g.
Wyithe,
J.
S.
B.,
\&
Loeb,
A.
{\it
Astrophys.
J.}
{\bf
595},
614
(2003);
Hopkins,
P.
F.,
\&
Hernquist,
L.
{\it
Astrophys.
J.}
{\bf
698},
1550
(2009).
\@endanenote 
\@doanenote {14}
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R.,
\&
Karas,
V.
IAU
Symp.
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238},
173
(2007);
Ghez,
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et
al.
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{\bf
689},
1044
(2008).
\@endanenote