COLLECTION NAME:
NASA Chandra Space Telescope Collection
Record
Name:
Mkn 421: Lost and Found: X-ray Telescope Locates Missing Matter
Release Date:
February 02, 2005
Credit:
Spectrum: NASA/SAO/CXC/F.Nicastro et al.; Illustration: CXC/M.Weiss
Category:
Quasars & Active Galaxies, Cosmology/Deep Fields/X-ray Background
Coordinates (J2000):
RA 11h 04m 27.30s | Dec +38° 12' 31.80
Constellation:
Ursa Major
Instrument:
HRC-LETG , ACIS-LETG
Also Known As:
Mrk 421
Distance Estimate:
About 400 million light years
Reference:
F. Nicastro et al., 2005, Nature, (Feb. 3 issue); also astro-ph/0412378
facet_what:
Ursa Major
facet_where:
Washington, D.C.
facet_when:
February 02, 2005
facet_when_year:
2005
UID:
SPD-CHAND-photo/2005/mkn421/mkn421_ill_spec.tif
