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X-Ray Properties of High-Z Radio-Quiet Quasars: ASCA Observations

Published online by Cambridge University Press:  25 May 2016

M. Cappi ,
M. Matsuoka ,
C. Vignali ,
A. Comastri ,
T. Mihara ,
C. Otani ,
G.G.C. Palumbo  and
S.J. Xue
M. Cappi
Affiliation:
1RIKEN, Hirosawa 2-1, Wako, Saitama 351-01, Japan 2ITeSRE/CNR, Via Gobetti 101, 40129, Bologna, Italy
M. Matsuoka
Affiliation:
1RIKEN, Hirosawa 2-1, Wako, Saitama 351-01, Japan
C. Vignali
Affiliation:
3Dpt. of Astronomy, Bologna University, Via Zamboni 33, 40126, Italy
A. Comastri
Affiliation:
4Osservatorio Astronomico di Bologna, Via Zamboni 33, 40126, Italy
T. Mihara
Affiliation:
1RIKEN, Hirosawa 2-1, Wako, Saitama 351-01, Japan
C. Otani
Affiliation:
1RIKEN, Hirosawa 2-1, Wako, Saitama 351-01, Japan
G.G.C. Palumbo
Affiliation:
2ITeSRE/CNR, Via Gobetti 101, 40129, Bologna, Italy 3Dpt. of Astronomy, Bologna University, Via Zamboni 33, 40126, Italy
S.J. Xue
Affiliation:
1RIKEN, Hirosawa 2-1, Wako, Saitama 351-01, Japan

Abstract

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The first-ever high energy (~ 1-30 keV) X-ray spectra of three z ~ 2 radio-quiet quasars (RQQs) are presented. If confirmed, the most interesting result is the marginal, but consistent, evidence for FeKα emission lines in at least two of the sources. Further ASCA observations of high-z RQQs are needed for firm conclusions.

Type
Session 3: Diagnostics of High Gravity Objects with X- and Gamma Rays
Information
Symposium - International Astronomical Union , Volume 188: The Hot Universe , 1998 , pp. 426 - 427
Copyright
Copyright © Kluwer 1998 

References

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