Journal ArticleDOI
Interstellar bubbles. II - Structure and evolution
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TLDR
In this article, the detailed structure of the interaction of a strong stellar wind with the interstellar medium is presented, including the effects of thermal conduction between the hot interior and the cold shell of swept-up interstellar matter.Abstract:
The detailed structure of the interaction of a strong stellar wind with the interstellar medium is presented. First, an adiabatic similarity solution is given which is applicable at early times. Second, a similarity solution is derived which includes the effects of thermal conduction between the hot (about 1 million K) interior and the cold shell of swept-up interstellar matter. This solution is then modified to include the effects of radiative energy losses. The evolution of an interstellar bubble is calculated, including the radiative losses. The quantitative results for the outer-shell radius and velocity and the column density of highly ionized species such as O VI are within a factor 2 of the approximate results of Castor, McCray, and Weaver (1975). The effect of stellar motion on the structure of a bubble, the hydrodynamic stability of the outer shell, and the observable properties of the hot region and the outer shell are discussed.read more
Citations
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Journal ArticleDOI
Star formation activity in the neighbourhood of W-R 1503-160L star in the mid-infrared bubble N46
TL;DR: In this paper, the authors carried out a multi-wavelength analysis of the mid-infrared bubble N46, which hosts a WN7 Wolf-Rayet (W-R) star and used 13CO line data to trace an expanding shell surrounding the W-R star containing about five condensations within the molecular cloud associated with the bubble.
Journal ArticleDOI
GS100-02-41: a new large HI shell in the outer part of the Galaxy
TL;DR: In this article, the authors analyzed the origin and evolution of the large HI shell GS100-02-41 and its role in triggering star forming, and carried out a multi-wavelength study.
Journal ArticleDOI
General polytropic magnetofluid under self-gravity: Voids and shocks
TL;DR: In this paper, the authors studied the self-similar magnetohydrodynamics of a quasi-spherical expanding void (viz. cavity or bubble) surrounding the centre of a self-gravitating gas sphere with a general polytropic equation of state.
Journal ArticleDOI
Diffuse X-ray emission around an ultraluminous X-ray pulsar
Andrea Belfiore,Paolo Esposito,Paolo Esposito,Fabio Pintore,G. Novara,Ruben Salvaterra,Andrea De Luca,Andrea De Luca,Andrea Tiengo,Andrea Tiengo,Andrea Tiengo,P. A. Caraveo,Felix Fürst,G. L. Israel,Danilo Magistrali,M. Marelli,Sandro Mereghetti,Alessandro Papitto,Guillermo A. Rodríguez Castillo,Chiara Salvaggio,Chiara Salvaggio,Luigi Stella,Dominic J. Walton,Anna Wolter,Luca Zampieri +24 more
TL;DR: In this paper, diffuse X-ray emission is detected around an ultraluminous Xray source, interpreted as a wind-powered expanding nebula, which suggests that a super-Eddington regime can be sustained for timescales much longer than the spin-up time of the neutron star powering the system.
Book ChapterDOI
Effect of Supernovae on the Local Interstellar Material
TL;DR: In this article, the authors review the characteristics of the local interstellar medium that have been affected by supernovae and support the view that the Sun is at the edge of the Loop I superbubble, which has merged into the low density Local Bubble.