Gravitational quadrupole-moment variations in active binaries

Details Gravitational quadrupole-moment variations in active binaries Gravitational quadrupole-moment variations in active binaries

Jul 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002an....323..424l&link_type=abstract

Astronomische Nachrichten, vol. 323, no. 3/4, p. 424-431

Astronomy and Astrophysics

Astronomy

32

Binaries: Close, Binaries: Eclipsing, Stars: Activity, Stars: Magnetic Fields

Scientific paper

The principal characteristics of the observed orbital period variation in magnetically active close binaries are briefly reviewed and the theoretical models proposed to interpret them are presented. In particular, we focus on the models proposed by Applegate (1992) and Lanza, Rodonò& Rosner (1998a) to explain the short-term modulation of the orbital period, as a consequence of the changes of the gravitational quadrupole moment of the active component driven by a cyclic hydromagnetic dynamo. Recent observational results support our interpretation and the constraints on the intensity of the internal magnetic fields that are required by the proposed mechanism, are discussed. A novel, stringent test of our model based on future asteroseismic space observations of oscillation mode splitting is also briefly presented.

Affiliated with

Also associated with

No associations

Rating

Gravitational quadrupole-moment variations in active binaries does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Gravitational quadrupole-moment variations in active binaries, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravitational quadrupole-moment variations in active binaries will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-960075