A Magnetic Flux Tube Oscillation Model for QPOs in SGR Giant Flares

Details A Magnetic Flux Tube Oscillation Model for QPOs in SGR Giant Flares A Magnetic Flux Tube Oscillation Model for QPOs in SGR Giant Flares

2008-07-04

arxiv.org/abs/0807.0683v1

The Astrophysical Journal, 686, 492 (2008)

Astronomy and Astrophysics

Astrophysics

15 pages,1 figures,1 table, accepted for publication in The Astrophysical Journal

Scientific paper

10.1086/591265

Giant flares from soft gamma-ray repeaters (SGRs) are one of the most violent phenomena in neutron stars. Quasi-periodic oscillations (QPOs) with frequencies ranging from 18 to 1840 Hz have been discovered in the tails of giant flares from two SGRs, and were ascribed to be seismic vibrations or torsional oscillations of magnetars. Here we propose an alternative explanation for the QPOs in terms of standing sausage mode oscillations of flux tubes in the magnetar coronae. We show that most of the QPOs observed in SGR giant flares could be well accounted for except for those with very high frequencies (625 and 1840 Hz).

Affiliated with

Also associated with

No associations

Rating

A Magnetic Flux Tube Oscillation Model for QPOs in SGR Giant Flares 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 A Magnetic Flux Tube Oscillation Model for QPOs in SGR Giant Flares, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Magnetic Flux Tube Oscillation Model for QPOs in SGR Giant Flares will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-597781