Skip to main content Accessibility help
×
Home

A Super-Eddington Wind Model for GRO J1655–40

  • David L. Meier (a1)

Abstract

A model for GRO J1655–40 is described in which the hard X/γ-ray behavior, and long delay between the X/γ and radio outbursts, are explained by processes which occur when the accretion rate approaches and exceeds the Eddington limit. The principal feature of the model is a dense, optically thick, super-Eddington wind ejected from the center of the accretion disk. The wind is responsible for determining the luminosity and spectral evolution of the object and for suppressing the formation of a fast, relativistic jet while the accretion rate is above the Eddington limit.

Our model makes use of the “magnetic switch” mechanism we recently discovered with MHD simulations of jet production in magnetized accretion disk coronae. A fast jet can be turned on (or off) by increasing (or decreasing) the Alfvén velocity in the corona relative to a critical value. Examination of models of sub- and super-Eddington disks shows that V A remains below the critical value while the wind is present, but could exceed it when the wind disappears and a hot, optically thin corona forms.

    • 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.

      A Super-Eddington Wind Model for GRO J1655–40
      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.

      A Super-Eddington Wind Model for GRO J1655–40
      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.

      A Super-Eddington Wind Model for GRO J1655–40
      Available formats
      ×

Copyright

References

Hide All
Bailyn, C.D. et al. 1995, Nature, 378, 157.
Begelman, M.C. & Meier, D.L. 1982, ApJ, 253, 873.
Blandford, R.D. & Payne, D.G. 1982, MNRAS, 199, 883.
Campbell-Wilson, D. & Hunstead, R. 1994, IAU Circ. No. 6052 & 6055.
Harmon, B.A. 1995, private communication.
Harmon, B.A., et al. 1995, Nature, 374, 703.
Hawley, J.F. 1991, ApJ, 381, 496.
Hjellming, R.M. & Rupen, M.P. 1995, Nature, 375, 464.
Meier, D.L. 1982, ApJ, 256, 693.
Meier, D.L. 1996, ApJ, 459, 185.
Meier, D.L., Edgington, S.F., Godon, P., Payne, D.G., and Lind, K.R. 1996, in preparation.
Mirabel, I.F. & Rodriguez, L.F. 1994, Nature, 371, 46.
Papaloizou, J.C.B., & Pringle, J.E. 1984, MNRAS, 208, 721.
Shakura, N.I. & Sunyaev, R.A. 1973, A&A, 24, 337.
Tingay, S.J. et al. 1995, Nature, 374, 141.
Wilson, C.A. et al. 1994, IAU Circ. No. 6056.

A Super-Eddington Wind Model for GRO J1655–40

  • David L. Meier (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