Ejection of the inner accretion disk in GRS 1915+105: the magnetic rubber-band effect

Details Ejection of the inner accretion disk in GRS 1915+105: the magnetic rubber-band effect Ejection of the inner accretion disk in GRS 1915+105: the magnetic rubber-band effect

2004-02-24

arxiv.org/abs/astro-ph/0402550v1

Astron.Astrophys. 380 (2001) 245

Astronomy and Astrophysics

Astrophysics

7 Latex pages and one figure

Scientific paper

10.1051/0004-6361:20011444

We examine theoretically the behaviour of the inner accretion disk in GRS 1915+105 when soft X-ray dips are present in the X-ray light curve. We assume the presence of a radial shock in the accretion disk, as in some of the Two Component Advective Flow (TCAF) solutions. We discuss the behaviour of the flux tubes inside a TCAF (which we name Magnetized TCAF or MTCAF model for brevity) and compare various competing forces on the flux tubes. In this MTCAF model, we find that the magnetic tension is the strongest force in a hot plasma of temperature $\gsim 10^{10}$K and as a result, magnetic flux tubes entering in this region collapse catastrophically, thereby occasionally evacuating the inner disk. We postulate that this magnetic `rubber-band' effect induced evacuated disk matter produces the blobby components of outflows and IR/radio jets. We derive the size of the post-shock region by equating the time scale of the Quasi-Periodic Oscillations to the infall time of accreting matter in the post-shock region and found the shock location to be $\sim 45-66 r_g$. We calculate the transition radius $r_{tr}$, where the Keplerian disk deviates into a sub-Keplerian flow, to be $\sim 320r_g$. Based on the derived X-ray spectral parameters, we calculate the mass of this region to be $\sim10^{18}$g. We conclude that during the X-ray dips the matter in the post-shock region, which manifests itself as the thermal-Compton component in the X-ray spectrum, is ejected, along with some sub-Keplerian matter in the pre-shock region.

Affiliated with

Also associated with

No associations

Rating

Ejection of the inner accretion disk in GRS 1915+105: the magnetic rubber-band effect 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 Ejection of the inner accretion disk in GRS 1915+105: the magnetic rubber-band effect, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ejection of the inner accretion disk in GRS 1915+105: the magnetic rubber-band effect will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-351796