Astronomy and Astrophysics – Astronomy
Scientist
Astronomy and Astrophysics
Astronomy
Scientist
Harvard College Observatory and Smithsonian Astrophysical Observatory, Center for Astrophysics, Cambridge, Mass.
Harvard College Observatory and Smithsonian Astrophysical Observatory, Cambridge, Mass.
Smithsonian Astrophysical Observatory, Cambridge, Mass.
4U0241+61 - A luminous low-redshift QSO
Compact and diffuse X-ray sources in the core of the Perseus cluster /Abell 426/
Compact and Extended X-Ray Sources In the Core of NGC 1275.
Detection of X-rays from Algol /beta Persei/
Explorer XI Experiment on Cosmic Gamma Rays.
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