Black Hole at NGC4258 Center

An optical image in H-alpha light of the central part of NGC 4258, which shows jet-like structures emerging from the core on a scale of a kiloparsec (3260 light-years). The inset shows the newly discovered molecular disk that contains water vapor masers. Their velocities are color coded (blue for approaching, red for receding and green for stationary with respect to the galaxy) and define nearly perfect Keplerian motion around an unseen object of 40 million solar masses.

Legacy Astronomical Images

NRAO/AUI/NSF does not hold full copyright for this image. Contact the archivist for details.

Legacy Astronomical Image

NGC4258

Gerald Cecil and Holland Ford

Makoto Miyoshi, James Moran, James Herrnstein, Lincoln Greenhill, Naomasa Nakai, Philip Diamond, Makoto Inoue

Very Long Baseline Array (VLBA)

1995-00-00

continuum

K

1.2 cm

22 GHz

RA 12:18:57.540, Dec: 47:18:14.300 (J2000)

0.000011 x 0.000011 degrees

Contact the archivist for a high resolution tif of this image.

Active Galactic Nuclei Series

Seyferts Unit