Skip to main content Accessibility help
×
Home

Emission-Line Variability in AGN

  • Dan Maoz (a1)

Extract

It has been apparent for some time that comparison of continuum and emission-line light curves of AGN may enable determination of the dimensions and structure of the Broad Line Region (BLR)(see Peterson 1988, and references therein). Observations to this end (Antonucci and Cohen 1983, Peterson et al. 1985, Clavel et al. 1987) and their analysis using cross-correlation to find the time lag between line and continuum variations (Gaskell and Sparke 1986), indicate BLR sizes an order of magnitude smaller than allowed by standard photoionization models for several AGN. Gaskell and Peterson (1987) analyzed errors in the cross-correlation method as applied to AGN time series in general and specifically to the Seyfert galaxy Akn120. In order to generalize and extend their analysis we investigated the significance of BLR sizes derived by cross-correlation under different model assumptions and observational circumstances (Maoz and Netzer 1988).

    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      Emission-Line Variability in AGN
      Available formats
      ×

      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      Emission-Line Variability in AGN
      Available formats
      ×

      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      Emission-Line Variability in AGN
      Available formats
      ×

Copyright

References

Hide All
Antonucci, R.R.J., & Cohen, R.D. 1983, Ap.J., 271, 564.
Clavel, J., Altamore, A., Boksenberg, A., Bromage, G.E., Elvius, A., Pelat, D., Penston, M.V., Perola, G.C., Snidjers, M.A.J., & Ulrich, M.H. 1987, Ap.J., 321, 251.
Gaskell, C.M., & Peterson, B.M. 1987, Ap.J. Suppl., 65, 1.
Gaskell, C.M., & Sparke, L.S. 1986, Ap.J., 305, 175.
Maoz, D., & Netzer, H. 1988, M.N.R.A.S., in press.
Maoz, D., Netzer, H., Brosch, N., Laor, A., Leibowitz, E., Beck, S., Mendelson, H., Almoznino, E., & Mazeh, T. 1988, in preparation.
Peterson, B.M. 1988, P.A.S.P., 100, in press.
Peterson, B.M., Meyers, K.A., Capriotti, E.R., Foltz, C.B., Wilkes, B.J., & Miller, H.R. 1985, Ap.J., 292, 164.

Emission-Line Variability in AGN

  • Dan Maoz (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed