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Related Images
Type 2 Quasar
Type 2 Quasar
(20 Mar 00)
CXO 0312 Fiore P3:
A Possible Type 2 Quasar Veiled Black Hole


CXO 0312 Fiore P3
Credit: X-ray: NASA/CXC/SAO, Optical: ESO/La Silla

Chandra ACIS contours overlaid on an optical image of a newly discovered powerful X-ray source in a distant galaxy . When viewed with an optical telescope, this galaxy appears normal. But when the Chandra X-ray Observatory observed the galaxy during calibration testing in September 1999, it discovered an unusually strong source of X rays.

Located 2.5 billion light years from Earth, the X-ray source is concentrated in the central regions of the galaxy and could be another example of a veiled black hole. This discovery adds to a growing body of evidence that our census of energetic black hole sources in galaxies is far from complete.

A team of Italian and Harvard-Smithsonian scientists, led by Fabrizio Fiore, of the Astronomical Observatory of Rome, and the Harvard-Smithsonian Center for Astrophysics, made the discovery.

The vertical lines in the image are part of a grid to locate the source in the sky. The X-ray contours represent brightness levels and are consistent with a point-like source in the center of the galaxy. The colors in the optical image also represent brightness levels. The source name is CXOUJ, which defines its position in the sky.

Reference: Fiore et al 2000, New Astronomy in press, astro-ph/0003273

Fast Facts for CXO 0312 Fiore P3:
Credit  X-ray: NASA/CXC/SAO, Optical: ESO/La Silla
Scale  Image is 18.7 arcsec across.
Category  Quasars & Active Galaxies
Coordinates (J2000)  RA 03h 12m 38.90s | Dec -76° 51' 34"
Constellation  Hydrus
Observation Dates  April 10, 2000
Color Code  Intensity
Instrument  ACIS
Distance Estimate  2.5 billion light years
Release Date  April 03, 2000