STELLAR-MASS BLACK HOLES IN THE SOLAR NEIGHBORHOOD
Rocky Kolb
Fermilab, Chicago, USA
Résumé :
We search for nearby, isolated, accreting, ``stellar-mass''
(3 to 100 solar masses) black holes. Models suggest a synchrotron
spectrum in visible wavelengths and some
emission in X-ray wavelengths. Of 3.7 million objects in the Sloan Digital Sky
Survey Early Data Release, about 150,000 objects have
colors and properties consistent with such a spectrum, and 47 of
these objects are X-ray sources from the ROSAT All Sky Survey.
We give the positions and colors of these 47 black-hole candidates,
as well as a measure of their distances from the stellar loci in
color--color space.
We discuss uncertainties the expected number of sources,
and the contribution of black holes to local dark matter.
