HEAD 2003 Meeting
Session 9. Jets, Blazars and TeV Astronomy III
Poster, Sunday-Wednesday, March 23, 2003, Duration of Meeting

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[9.07] Modeling the Chandra X-Ray Spectrum of the GPS Quasar PKS 1127-145 with a Parsec Scale Jet

M. Blazejowski, A. Siemiginowska (CfA), M. Sikora, R. Moderski (CAMK, Warsaw, Poland), J. Bechtold (Steward Obs.)

We present the broad-band spectrum of the innermost ``core-jet'' region of the high redshift (z=1.18) quasar PKS 1127-145. The spectrum consists of the two well pronounced components: the low energy (radio) and the high energy (X-rays) bump. We propose a scenario where the low energy component results from the jet synchrotron radiation, while the high energy one is produced via the Comptonization of the thermal IR radiation from the hot dust by the relativistic particles in the jet. We discuss the parameters required to explain the observed spectrum. We also suggest that the source presents some of the typical features observed in so-called MeV-Blazars, such as the pronounced blue bump, or the very hard X-ray spectrum. We discuss its relation to the population of the GPS quasars and blazars.

Acknowledgments: This research is funded in part by NASA contract NAS8-39073. Partial support for this work was provided by the National Aeronautics and Space Administration through Chandra Award Number GO-01164X and GO2-3148A issued by the Chandra X-Ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of NASA under contract NAS8-39073.

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Bulletin of the American Astronomical Society, 35#2
© 2003. The American Astronomical Soceity.