Observations of NGC 4151 from UHURU

Details Observations of NGC 4151 from UHURU Observations of NGC 4151 from UHURU

Nov 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...218l...1u&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 218, Nov. 15, 1977, p. L1, L2.

Astronomy and Astrophysics

Astronomy

4

Seyfert Galaxies, Uhuru Satellite, X Ray Astronomy, X Ray Spectra, Ariel 5 Satellite, Galactic Nuclei, Power Spectra, X Ray Sources

Scientific paper

Uhuru X-ray observations of NGC 4151 over the energy range from 2 to 10 keV are reported. A best-fit exponential power-law spectrum with a constant of 0.0096 and a spectral index of -0.1 is determined for the cited energy range. A comparison with Ariel 5 results indicates that a previously reported intensity variation was accompanied by a change in spectral shape. It is suggested that the X-ray source might have two components.

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