Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Balsara, D. S."'
Publikováno v:
Comput. Astrophys. Cosmol. 7, 1 (2020)
Many important problems in astrophysics, space physics, and geophysics involve flows of (possibly ionized) gases in the vicinity of a spherical object, such as a star or planet. The geometry of such a system naturally favors numerical schemes based o
Externí odkaz:
http://arxiv.org/abs/2003.13862
This report describes a new magnetohydrodynamic numerical model based on a hexagonal spherical geodesic grid. The model is designed to simulate astrophysical flows of partially ionized plasmas around a central compact object, such as a star or a plan
Externí odkaz:
http://arxiv.org/abs/1302.2087
We present a series of simulations of turbulent stratified protostellar discs with the goal of characterizing the settling of dust throughout a minimum-mass solar nebula. We compare the evolution of both compact spherical grains, as well as highly fr
Externí odkaz:
http://arxiv.org/abs/0908.2937
We present a large number of two and a half dimensional simulations of supernova remnants expanding into interstellar media having a range of densities, temperatures and magnetic field strengths. The volume of hot gas produced is strongly dependent o
Externí odkaz:
http://arxiv.org/abs/0711.2295
On October 28, 2003 an earthward-directed coronal mass ejection (CME) was observed from SOHO/LASCO imagery in conjunction with an X17 solar flare. The CME, traveling at nearly 2000 km/s, impacted the Earth on October 29, 2003 causing ground-based par
Externí odkaz:
http://arxiv.org/abs/astro-ph/0608293
Anisotropic thermal conduction plays an important role in various astrophysical systems. One of the most stringent tests of thermal conduction can be found in supernova remnants. In this paper we study anisotropic thermal conduction and examine the p
Externí odkaz:
http://arxiv.org/abs/astro-ph/0606031
Publikováno v:
Astrophys.J.653:300-315,2006
Since the pioneering observations of Spite & Spite in 1982, the constant lithium abundance of metal-poor ([Fe/H]<-1.3) halo stars near the turnoff has been attributed a cosmological origin. Closer analysis revealed that the observed abundance lies at
Externí odkaz:
http://arxiv.org/abs/astro-ph/0603553
Autor:
Rettig, T., Brittain, S., Simon, Theodore, Gibb, E., Balsara, D. S., Tilley, D. A., Kulesa, C.
Publikováno v:
Astrophys.J. 646 (2006) 342-350
We present high-resolution infrared spectra of four YSOs (T Tau N, T Tau S, RNO 91, and HL Tau). The spectra exhibit narrow absorption lines of 12CO, 13CO, and C18O as well as broad emission lines of gas phase12CO. The narrow absorption lines of CO a
Externí odkaz:
http://arxiv.org/abs/astro-ph/0603035
Autor:
Balsara, D. S., Kim, J. S.
Publikováno v:
Astrophys.J. 634 (2005) 390-406
In this paper we further advance the study of magnetic field amplification in the interstellar medium that was started in Balsara et al (2004, Paper I). We show that the flux growth rate is comparable to the rate of magnetic energy growth found in Pa
Externí odkaz:
http://arxiv.org/abs/astro-ph/0504065
Runge Kutta Discontinuous Galerkin (RKDG) schemes can provide highly accurate solutions for a large class of important scientific problems. Using them for problems with shocks and other discontinuities requires that one has a strategy for detecting t
Externí odkaz:
http://arxiv.org/abs/physics/0411160