Hostname: page-component-586b7cd67f-l7hp2 Total loading time: 0 Render date: 2024-11-25T14:58:20.457Z Has data issue: false hasContentIssue false
  • English
  • Français

Microlensing Induced Spectral Variability In Q2237+0305

Published online by Cambridge University Press:  25 May 2016

Geraint F. Lewis ,
Mike J. Irwin  and
Paul C. Hewett
Geraint F. Lewis
Affiliation:
Institute of Astronomy, Cambridge. UK
Mike J. Irwin
Affiliation:
Royal Greenwich Observatory, Cambridge. UK
Paul C. Hewett
Affiliation:
Institute of Astronomy, Cambridge. UK

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.

The degree of microlensing induced amplification is dependent upon the size of a source. As quasar spectra consist of the sum of emission from different regions this scale dependent amplification can produce spectral differences between the images of a macrolensed quasar. This paper presents the first direct spectroscopic evidence for this effect, providing a limit on the scale of the continuum and the broad line emission regions at the center of a source quasar (2237+0305). Lack of centroid and profile differences in the emission lines indicate that substructure in the broad emission line region is > 0.05 parsecs.

Type
Chapter 8: Quasar Structure & Microlensing
Information
Symposium - International Astronomical Union , Volume 173: Astrophysical Applications of Gravitational Lensing , 1996 , pp. 241 - 246
Copyright
Copyright © Kluwer 1996 

References

Huchra, J., Gorenstein, M., Kent, S., Shapiro, I., Smith, G., Horine, K., & Perley, R., 1985, Astronomical Journal, 90, 691 Google Scholar
Houde, M. & Racine, R., 1994, Astronomical Journal, 107, 466 Google Scholar
Kayser, R., Refsdal, S. & Stabell, R., 1986, Astronomy and Astrophysics, 166, 36 Google Scholar
Nemiroff, R. J., 1988, Astrophysical Journal, 335, 593 Google Scholar
Rees, M. J., 1984, ARA&A, 22, 471 Google Scholar
Rix, H., Schneider, D. P. & Bahcall, J. N., 1992, Astronomical Journal, 104, 959 Google Scholar
Sanitt, N., 1971, Nature, 234, 199 Google Scholar
Schneider, P. & Wambsganss, J., 1990, Astronomy and Astrophysics, 237, 42 Google Scholar