The X-ray emissions of AGNs based on the observations from Chandra

Details The X-ray emissions of AGNs based on the observations from Chandra The X-ray emissions of AGNs based on the observations from Chandra

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005pabei..23..239l&link_type=abstract

Progress in Astronomy (ISSN 1000-8349), Vol. 23, No. 3, p. 239 - 247 (2005)

Astronomy and Astrophysics

Astrophysics

Astrophysics, Agn, Review, Chandra, X-Ray

Scientific paper

Active Galactic Nuclei (AGNs) are among the most spectacular objects in the Universe. They produce prodigious emission over an extraordinary broad range in frequency, within which the fraction in X-ray is about 50%. Their research in X-ray is essential in many aspects of astrophysics, such as energy production, radiation mechanism and cosmology, etc. The X-ray spectra and X-ray images with high spatial resolution, which are provided by the X-ray observatory Chandra, allow us to further investigate AGNs, especially to understand the core regions and the physical processes in the center. We here briefly present the recent progress based on Chandra, including (1) the introduction of the X-ray observations of broad absorption line quasar (BAL QSO) APM 08279+5255 and the important role of X-ray observations of high-redshift QSOs; (2) for the Seyfert galaxy NGC 4151, the Chandra's X-ray spectra with high spectral resolution to explore its extended X-ray emission, and the X-ray images of NGC 1068 with high spatial resolution indicating that its X-ray emission is strongly related with high-ionization emission line ([O III]λ5007); (3) the analysis of X-ray environment of a sample of 6 BL Lac objects; (4) the X-ray jets identified by Chandra observations.

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