Ejection of heavy elements from the stellar core to the periphery of the cloud of ejecta during a supernova explosion: A possible model of the processes

Змитренко, Н. В.; Rozanov, V. B.; Stepanov, R. V.; Yakhin, R. A.; Belyaev, V. S.

doi:10.1134/s1063776114030200

Cited by 5 publications

(4 citation statements)

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“…Further, we surmise that the laser energy scale is of ∼ 1 − 1000 kJ. If there is a possibility to conduct an experiment at smaller energy, the calculations and estimations could be correspondingly transformed [8].…”

Section: Similarity Criteria For Laboratory and Astrophysical Objectsmentioning

confidence: 99%

“…This circumstance allows one (with certain limitations) not to take into account the object's own gravitation when modeling a SN remnant expansion. For laser targets, Fr → ∞ [8]. The ratio between the system size and the evolution time can be described by the Strouhal number S = Ut/L, where L is the size of the system, t is the characteristic time of change in its parameters, and U is the typical matter velocity (of the order of the speed of sound).…”

Section: Similarity Criteria For Laboratory and Astrophysical Objectsmentioning

confidence: 99%

“…Preliminarily, we conducted a series of 1D simulations of the expansion of the laser target, whose parameters are presented in Table 3 [8]. As it was mentioned above, the laser energy was deposited in the Ti layer.…”

Section: Simulations Of the Expansion Of The Laser Target -Simulator mentioning

confidence: 99%

“…In the literature (see, e.g., [3][4][5][6][7][8][9]), the statements and results of simulations as well as the comparison of the observation and experimental data are presented. We use these results to check the adequacy of the employed numerical codes to the considered problem.…”

Section: Introductionmentioning

confidence: 99%

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Simulation of Supernova Expansion

et al. 2014

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We study the possibility of laboratory modeling of some processes that are intrinsic to supernova (SN) explosion by means of powerful lasers (the so-called laboratory astrophysics); in particular, the possibility of reproducing astrophysical data via numerical models was originally aimed at laser plasma simulation. First of all, we analyze hydrodynamic similarity criteria for the considered processes. Then, we conduct 1D and 2D hydrodynamic simulations to model the expansion dynamics of the SN remnant (the progenitor mass is ∼5-15 that of the Sun) during several hundreds of seconds after the explosion, including initially asymmetric configurations. Basing on the similarity criteria, we consider possible laser targets -simulators for a supernova, which mimic some processes inherent in astrophysical phenomenon, such as shock wave propagation through a medium, the development of hydrodynamic instabilities at contact boundaries of shells of different densities, etc. We present a simple solution to the problem of blast wave propagation in a medium with density distributed according to a decreasing power law, which is a good approximation for the density distribution in a supernova progenitor.

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Section: Similarity Criteria For Laboratory and Astrophysical Objectsmentioning

confidence: 99%

Section: Similarity Criteria For Laboratory and Astrophysical Objectsmentioning

confidence: 99%

Section: Simulations Of the Expansion Of The Laser Target -Simulator mentioning

confidence: 99%