Hostname: page-component-848d4c4894-tn8tq Total loading time: 0 Render date: 2024-06-27T13:07:53.307Z Has data issue: false hasContentIssue false
  • English
  • Français

The X-ray Spectral Properties for Gamma-ray Loud Blazars

Published online by Cambridge University Press:  26 May 2016

Ben-Zhong Dai
Ben-Zhong Dai*
Affiliation:
Department of Physics, Yunnan University, Kunming 650091, China

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We selected a sample of bright γ-ray (E>100 MeV) blazars whose X-rays in 0.1–10.0 keV band are observed by ROSAT and other X-ray satellites, and make a detailed spectral analysis between the soft (0.1–2.0 keV) and hard band (2.0–10.0keV) as well as between X-ray and γ-ray properties using both un-weighted and weighted analysis methods. Our results indicate: (i) there are significant anti-correlations of the spectral indices between soft X-rays and γ-rays, and between hard X-ray and γ-ray of flat-spectrum radio quasars (FSRQs) and BL Lac objects; (ii) in the X-ray band, the correlation is confusing, there is positive correlation of the spectral indices between soft and hard X-ray band using weighted correlation analysis, but this correlation is negative using un-weighted correlation analysis.

Type
Part 8 Active Galaxies and their Nuclei
Information
Symposium - International Astronomical Union , Volume 214: High Energy Processes and Phenomena in Astrophysics , 2003 , pp. 299 - 302
Copyright
Copyright © Astronomical Society of the Pacific 2003 

References

Blandford, R. D., & Rees, M. J. 1978, in Pittsburgh Conf. on BL Lac Objects, ed.Wolfe, A. M. (Pittsburgh: Univ. Pittsburgh Press), 328 Google Scholar
Catanese, M., & Weeks, T. C. 1999, PASP, 111, 1193 Google Scholar
Comastri, A., Fossati, G., Ghisellini, G. & Molendi, S. 1997, ApJ, 480, 534 Google Scholar
Donato, D., Ghisellini, G., Tagliaferri, G., & Fossati, G. 2001, A&A, 375, 739 Google Scholar
Hartman, R. C., Bertsch, D. L., Bloom, S. D. et al. 1999, ApJS, 123, 79 Google Scholar
Mattox, J. R., Hartman, R. C. & Reimer, O., 2001, ApJS, 135, 155 Google Scholar
Ulrich, M.-H., Maraschi, L., & Urry, C.M. 1997, ARA&A, 35, 445 Google Scholar
Worral, D. M., & Wilkes, B. J. 1990, ApJ, 360, 396 Google Scholar