NDLI: MHD simulations of the long-term evolution of a dipolar magnetosphere surrounded by an accretion disk

Content Provider	Springer Nature Link
Author	Fendt, Christian
Copyright Year	2003
Abstract	The evolution of a stellar, initially dipole type magnetosphere interacting with an accretion disk is investigated using numerical ideal MHD simulations. The simulations follow several 1000 Keplerian periods of the inner disk (for animated movies see http://www.aip.de∼cfendt).Our model prescribes a Keplerian disk around a rotating star as a fixed boundary condition. The initial magnetic field distribution remains frozen into the star and the disk. The mass flow rate into the corona is fixed for both components. The initial dipole type magnetic field develops into a spherically radial outflow pattern with two main components – a disk wind and a stellar wind – both evolving into a quasi-stationary final state. A neutral field line divides both components, along which small plasmoids are ejected in irregular time intervals. The half opening angle of the stellar wind cone varies from 30° to55° depending on the ratio of the mass flow rates of disk wind and stellar wind. The maximum speed of the outflow is about the Keplerian speed at the inner disk radius. An axial jet forms during the first decades of rotations. However, this feature does not survive on the very long time scale and a pressure driven low velocity flow along the axis evolves. Within a cone of 15° along the axis the formation of knots may be observed if the stellar wind is weak. With the chosen mass flow rates and field strength we see almost no indication for a flow self-collimation. This is due to the weak net poloidal electric current in the magnetosphere which is in difference to typical jet models.
Starting Page	59
Ending Page	64
Page Count	6
File Format	PDF
ISSN	0004640X
Journal	Astrophysics and Space Science
Volume Number	287
Issue Number	1-4
e-ISSN	1572946X
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2003-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Astronomy
Content Type	Text
Resource Type	Article
Subject	Astronomy and Astrophysics Space and Planetary Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

MHD simulations of the long-term evolution of a dipolar magnetosphere surrounded by an accretion disk

MHD simulations of accretion onto a dipolar magnetosphere - I. Accretion curtains and the disk-locking paradigm

MHD simulations of accretion onto a dipolar magnetosphere - II. Magnetospheric ejections and stellar spin-down

Global MHD simulations of disk-magnetosphere interactions: accretion and outflows

MHD simulations of jets from accretion disks

3D MHD Simulations of Laboratory Plasma Jets

Viscous Evolution of an Accretion Disk in a Binary System

Simulations of Gas Flow from a Galactic Disk Towards the Black-Hole Accretion Disk

Magnetic Activity and the Interaction Between the Stellar Magnetosphere and the Accretion Disk

MHD simulations of the long-term evolution of a dipolar magnetosphere surrounded by an accretion disk

Similar Documents

MHD simulations of the long-term evolution of a dipolar magnetosphere surrounded by an accretion disk

MHD simulations of accretion onto a dipolar magnetosphere - I. Accretion curtains and the disk-locking paradigm

MHD simulations of accretion onto a dipolar magnetosphere - II. Magnetospheric ejections and stellar spin-down

Global MHD simulations of disk-magnetosphere interactions: accretion and outflows

MHD simulations of jets from accretion disks

3D MHD Simulations of Laboratory Plasma Jets

Viscous Evolution of an Accretion Disk in a Binary System

Simulations of Gas Flow from a Galactic Disk Towards the Black-Hole Accretion Disk

Magnetic Activity and the Interaction Between the Stellar Magnetosphere and the Accretion Disk

MHD simulations of the long-term evolution of a dipolar magnetosphere surrounded by an accretion disk