EXOSAT observations of the blazar PKS 1510 - 089

Details EXOSAT observations of the blazar PKS 1510 - 089 EXOSAT observations of the blazar PKS 1510 - 089

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...365..455s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 365, Dec. 20, 1990, p. 455-459.

Astronomy and Astrophysics

Astrophysics

11

Blazars, Exosat Satellite, Polarization (Waves), Quasars, X Ray Sources, Absorption Spectra, Active Galactic Nuclei, Spectrum Analysis, X Ray Spectra

Scientific paper

A detailed study of X-ray emission from the high-polarization quasar PKS 1510 - 089, also known as a blazar, is presented, based on the Exosat observations in 1984 and 1985. There is no evidence for any variations in the X-ray intensity on hourly time scales during either of the two observations. The 2-10 keV X-ray flux shows no significant change over a year. The observed X-ray spectral data is best fitted by a power law with a photon index, of about 1.40. There is no detection of any significant low-energy absorption within the blazar, nor is there any evidence for a soft X-ray excess. A line feature modeled as a Gaussian is detected with a high significance near 5 keV. The emission line could be the redshifted 6.4 keV line due to the fluorescence of cold iron present around the nucleus of PKS 1510 - 089 or the redshifted 6.7 keV line due to ionized iron in a hot plasma.

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