Black holes go middle
class
Two teams of astronomers report
the discovery of a new, intermediate-weight class of black holes.
References:
1999. Astonomers discover 'middleweight' black holes. American Astronomical
Society meeting. April. Charleston, S.C.
Colbert, E.J.M., and R.F. Mushotzky. In press. The nature of accreting
black holes in nearby galaxy nuclei. Astrophysical Journal Letters.
Sources:
Edward J.M. Colbert
NASA's Goddard Space Flight Center
Laboratory for High Energy Astrophysics
Mailstop Code 662
Greenbelt, MD 20771
Richard E. Griffiths
Carnegie Mellon University
Department of Physics
5000 Forbes Avenue, Wean Hall
Pittsburgh, PA 15213-3890
Richard Mushotzky
NASA's Goddard Space Flight Center
Laboratory for High Energy Astrophysics
Mailstop Code 662
Greenbelt, MD 20771
Andrew Ptak
Carnegie Mellon University
Physics Department
5000 Forbes Avenue
Pittsburgh, PA 15213-3890
From Science
News, Vol. 155, No. 18, May 1, 1999, p. 286.
Copyright © 1999, Science Service.
