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Reference: Goodall, PT, Alouani-Bibi, F and Blundell, KM, (2011). When microquasar jets and supernova collide: Hydrodynamically simulating the SS433-W50 interaction. Monthly Notices of the Royal Astronomical Society, 414 (4), 2838-2859.Citable link to this page:

 

When microquasar jets and supernova collide: Hydrodynamically simulating the SS433-W50 interaction

Abstract: We present investigations of the interaction between the relativistic, precessing jets of the microquasar SS433 and the surrounding, expanding supernova remnant (SNR) shell, W50, and the consequent evolution in the inhomogeneous interstellar medium (ISM). We model their evolution using the hydrodynamic flash code, which uses adaptive mesh refinement. We show that the peculiar morphology of the entire nebula can be reproduced to a good approximation, due to the combined effects of (i) the evolution of the SNR shell from the free-expansion phase through the Sedov blast wave in an exponential density profile from the Milky Way disc, and (ii) the subsequent interaction of the relativistic, precessing jets of SS433. Our simulations reveal: (1) Independent measurement of the Galaxy scaleheight and density local to SS433 (as n 0= 0.2cm -3,Z d= 40pc), with this scaleheight being in excellent agreement with the work of Dehnen and Binney. (2) A new mechanism for hydrodynamic refocusing of conical jets. (3) The current jet precession characteristics do not simply extrapolate back to produce the lobes of W50, but a history of episodic jet activity having at least three different outbursts with different precession characteristics would be sufficient to produce the W50 nebula. A history of intermittent episodes of jet activity from SS433 is also suggested in a kinematic study of W50 detailed in a companion paper. (4) An estimate of the age of W50, and equivalently the age of SS433's black hole created during the supernova explosion, in the range of 17000-21000yr.

Peer Review status:Peer reviewedPublication status:PublishedVersion:Accepted ManuscriptNotes:Copyright © 2011 The Authors. Monthly Notices of the Royal Astronomical Society © 2011 RAS. This is a pre-copyedited, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The version of record Goodall, P. T., Alouani-Bibi, F., and Blundell, K. M. (2011, April 19). When microquasar jets and supernova collide: hydrodynamically simulating the SS 433-W 50 interaction. Monthly Notices of the Royal Astronomical Society. Oxford University Press (OUP) is available online at: http://doi.org/10.1111/j.1365-2966.2011.18388.x.

Bibliographic Details

Publisher: Oxford University Press

Publisher Website: http://www.oxfordjournals.org/

Journal: Monthly Notices of the Royal Astronomical Societysee more from them

Publication Website: http://mnras.oxfordjournals.org/

Issue Date: 2011

pages:2838-2859Identifiers

Urn: uuid:9815649e-fa76-40ea-8f68-316abad825bd

Source identifier: 162028

Eissn: 1365-2966

Doi: https://doi.org/10.1111/j.1365-2966.2011.18388.x

Issn: 0035-8711 Item Description

Type: Journal article;

Language: eng

Version: Accepted ManuscriptKeywords: Hydrodynamics ISM: jets and outflows ISM: kinematics and dynamics ISM: supernova remnants X-rays: binaries Tiny URL: pubs:162028

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Autor: Goodall, PT - institutionUniversity of Oxford facultyOxford, MPLS, Physics, Astrophysics - - - Alouani-Bibi, F - - - Blundell, KM

Fuente: https://ora.ox.ac.uk/objects/uuid:9815649e-fa76-40ea-8f68-316abad825bd



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