Discovery of an X-ray QSO

Details Discovery of an X-ray QSO Discovery of an X-ray QSO

Jan 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978natur.271...35r&link_type=abstract

Nature, vol. 271, Jan. 5, 1978, p. 35-37.

Astronomy and Astrophysics

Astronomy

61

Quasars, Radio Astronomy, X Ray Sources, Ariel 5 Satellite, Red Shift, Satellite Observation, Seyfert Galaxies, Very Large Array (Vla)

Scientific paper

The discovery of X-ray QSO MR2251-178 at a distance of 410 Mpc is reported. The observations are based on signals (2-11 keV) from NRAO's Very Large Array (VLA) radio telescope and from two independent rotating modulation collimators (RMC). Coordinates are given and positional identification with X-ray source 2A2251-179 is made. Examination of POSS plates and redshift has given rise to speculation that MR2251-178 could actually be a Seyfert galaxy; but its high luminosity would tend to support the contention that it is, indeed, a QSO.

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