Exosat observations of the blazar PKS 1510 - 089
- Tata Institute of Fundamental Research, Bombay (India)
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. 43 refs.
- OSTI ID:
- 5995716
- Journal Information:
- Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 365; ISSN ASJOA; ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTRA
COSMIC RADIO SOURCES
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
ELEMENTS
EMISSION SPECTRA
GALAXY NUCLEI
IRON
METALS
POLARIZATION
QUASARS
SATELLITES
SPECTRA
TRANSITION ELEMENTS
VARIATIONS
X-RAY SPECTRA