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The Local Interstellar Medium (LISM) makes its presence felt in the heliosphere in a number of ways including inflowing neutral atoms and dust and shaping of the heliosphere via its ram pressure and magnetic field. Modelers of the…

Astrophysics of Galaxies · Physics 2013-10-16 Jonathan D. Slavin

Breaking waves entrain gas beneath the surface. The wave-breaking process energizes turbulent fluctuations that break bubbles in quick succession to generate a wide range of bubble sizes. Understanding this generation mechanism paves the…

Fluid Dynamics · Physics 2021-02-24 Wai Hong Ronald Chan , Perry Johnson , Parviz Moin

The hot, X-ray-emitting gas in superbubbles imparts energy and enriched material to the interstellar medium (ISM) and generates the hot ionized medium, the ISM's high-temperature component. The evolution of superbubble energy budgets is not…

Astrophysics of Galaxies · Physics 2015-05-20 A. E. Jaskot , D. K. Strickland , M. S. Oey , Y. -H. Chu , G. García-Segura

We present a phenomenological model of the dynamics of buoyant bubbles in the atmosphere of a cluster of galaxies. The derived equations describe velocity, size, mass, temperature and density of the buoyant bubbles as functions of time…

Astrophysics · Physics 2007-09-13 Georgi Pavlovski , Christian R. Kaiser , Edward C. D. Pope

Bubbles in the interstellar medium are produced by astrophysical sources, which continuously or explosively deposit large amount of energy into the ambient medium. These expanding bubbles can drive shocks in front of them, which dynamics is…

High Energy Astrophysical Phenomena · Physics 2015-06-12 M. V. Medvedev , A. Loeb

Bubbles and super-bubbles are ubiquitous in the interstellar medium and influence their local magnetic field. Starting from the assumption that bubbles result from violent explosions that sweep matter away in a thick shell, we derive the…

Astrophysics of Galaxies · Physics 2025-03-19 V. Pelgrims , M. Unger , I. C. Maris

"The purpose of numerical models is not numbers but insight." (Hamming) In the spirit of this adage, and of Don Cox's approach to scientific speaking, we discuss the questions that the latest generation of numerical models of the…

Astrophysics · Physics 2015-06-24 Mordecai-Mark Mac Low , Miguel A. de Avillez , Maarit J. Korpi

We present calculations of the heliospheric SWCX emission spectra and their contributions in the ROSAT 1/4 keV band. We compare our results with the soft X-ray diffuse background (SXRB) emission detected in front of 378 identified shadowing…

Astrophysics · Physics 2011-02-11 D. Koutroumpa , R. Lallement , J. C. Raymond , V. Kharchenko

The low-density region of the interstellar medium (ISM) where the Sun is located is known as the Local Bubble, a cavity filled with high-temperature and low-density plasma that may be created by a series of supernova (SN) explosions over…

Astrophysics of Galaxies · Physics 2025-09-24 Guang-Ya Zeng , Guang-Xing Li , Bing-Qiu Chen , Ji-Xuan Zhou , Martin G. H. Krause

The cosmological remnants of a first-order phase transition generally depend on the perturbations that the walls of expanding bubbles originate in the plasma. Several of the formation mechanisms occur when bubbles collide and lose their…

Cosmology and Nongalactic Astrophysics · Physics 2011-10-17 Leonardo Leitao , Ariel Megevand

This paper looks into various aspects brought to light by numerical work on the generalized interacting winds model for planetary nebulae. First, a detailed comparison between radiative and non-radiative models is made, showing that one's…

Astrophysics · Physics 2007-05-23 Garrelt Mellema , Adam Frank

Numerous spherical ``shells" have been observed in young star-forming environments that host low- and intermediate-mass stars. These observations suggest that these shells may be produced by isotropic stellar wind feedback from young…

Solar and Stellar Astrophysics · Physics 2021-07-28 Anna L. Rosen , Stella S. R. Offner , Michael M. Foley , Laura A. Lopez

High ambient interstellar pressure is suggested as a possible factor to explain the ubiquitous observed growth-rate discrepancy for supernova-driven superbubbles and stellar wind bubbles. Pressures of P/k ~ 1e5 cm-3 K are plausible for…

Astrophysics · Physics 2009-11-10 M. S. Oey , G. Garcia-Segura

Interstellar superbubbles generated by multiple supernova explosions are common in star-forming galaxies. They are the most obvious manifestation of mechanical feedback, and are largely responsible for transferring both thermal and kinetic…

Astrophysics · Physics 2009-11-13 M. S. Oey

In this paper we review the modeling of the Local Bubble (LB) with special emphasis on the progress we have made since the last major conference "The Local Bubble and Beyond (I)" held in Garching in 1997. Since then new insight was gained…

Astrophysics · Physics 2009-08-12 Dieter Breitschwerdt , Miguel A. de Avillez , Verena Baumgartner

The interaction of multiple bubbles is a complex physical problem. A simplified case of multiple bubbles is studied theoretically with a bubble located at the center of a circular bubble cluster. All bubbles in the cluster are equally…

Fluid Dynamics · Physics 2023-02-23 A-Man Zhang , Shi-Min Li , Pu Cui , Shuai Li , Yun-Long Liu

Wind-blown bubbles, from those around massive O and Wolf-Rayet stars, to superbubbles around OB associations and galactic winds in starburst galaxies, have a dominant role in determining the structure of the Interstellar Medium. X-ray…

Astrophysics · Physics 2009-10-30 David K. Strickland , Ian R. Stevens

Turbulence is ubiquitous in the insterstellar medium and plays a major role in several processes such as the formation of dense structures and stars, the stability of molecular clouds, the amplification of magnetic fields, and the…

Astrophysics of Galaxies · Physics 2015-06-19 D. Falceta-Goncalves , G. Kowal , E. Falgarone , A. C. -L. Chian

The feedback effects of massive stars on their galactic and intergalactic environments can dominate evolutionary processes in galaxies and affect cosmic structure in the Universe. Only the Local Group offers the spatial resolution to…

Astrophysics · Physics 2007-05-23 M. S. Oey

The properties of interstellar matter (ISM) at the Sun are regulated by our location with respect to the Local Bubble (LB) void in the ISM. The LB is bounded by associations of massive stars and fossil supernovae that have disrupted natal…

Astrophysics · Physics 2009-11-13 P. C. Frisch