CYG X-1 - A candidate of the black hole

CYG X-1 - A massive neutron star

Cyg X-1 - the remnant of the historical supernova of 1408.

Cyg X-1 entered a transitional state, may be on its way from the soft state back to the hard state

CYG X-1 spectral variability observed with RXTE and BATSE/CGRO

CYG X-1, a Benchmark Star for Tying the Optical and Radio Reference Frames

CYG X-1=V1357 CYG investigation based on high-resolution optical spectroscopy of 2002 2004

CYG X-3 - Gamma rays from a magnetic accretion disk

Cyg X-3 is flaring in radio

Cyg X-3 is in the active state

CYG X-3 Not Seen in the COS-B > 100 MeV Gamma Rays

Cyg X-3 X-Ray Fluctuations, 1969-1979

Cyg X-3: a young pulsar in a binary system?

Cyg X-3: can the compact object be a black hole?

Cyg X-3: Flaring in 1985 and 1989

CYG X-3: Not seen in high-energy gamma rays by COS-B

Cygnids and Taurids-Two Classes of Infrared Objects

Cygnus

Cygnus A

Cygnus A