Analytical Model of Time-Dependent Ionization in the Envelopes of Type II Supernovae at the Photospheric Phase

Standard

Analytical Model of Time-Dependent Ionization in the Envelopes of Type II Supernovae at the Photospheric Phase. / Potashov, M. Sh; Blinnikov, S. I.

In: Astronomy Letters, Vol. 45, No. 5, 01.05.2019, p. 276-281.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{7a4c7a0f21dc4b0b99514077be512b9a,

title = "Analytical Model of Time-Dependent Ionization in the Envelopes of Type II Supernovae at the Photospheric Phase",

abstract = "We investigate a simplified kinetic system of the hydrogen atom (two levels plus continuum) under conditions of a type IIP supernova at the plateau phase that realistically describes the basic properties of the complete system. We have found the Lyapunov function for the reduced system using which we have analytically obtained the ionization freeze-out effect on long time scales. Since the system completely recombines in the equilibrium approximation on long time scales, which does not occur in reality, this result confirms the necessity of allowance for the time-dependent effect in the kinetics during the photospheric phase in a supernova explosion.",

keywords = "atmospheres, spectral line formation, supernovae",

author = "Potashov, {M. Sh} and Blinnikov, {S. I.}",

note = "Publisher Copyright: {\textcopyright} 2019, Pleiades Publishing, Inc.",

year = "2019",

month = may,

day = "1",

doi = "10.1134/S1063773719050062",

language = "English",

volume = "45",

pages = "276--281",

journal = "Astronomy Letters",

issn = "1063-7737",

publisher = "Maik Nauka-Interperiodica Publishing",

number = "5",

}

RIS

TY - JOUR

T1 - Analytical Model of Time-Dependent Ionization in the Envelopes of Type II Supernovae at the Photospheric Phase

AU - Potashov, M. Sh

AU - Blinnikov, S. I.

PY - 2019/5/1

Y1 - 2019/5/1

N2 - We investigate a simplified kinetic system of the hydrogen atom (two levels plus continuum) under conditions of a type IIP supernova at the plateau phase that realistically describes the basic properties of the complete system. We have found the Lyapunov function for the reduced system using which we have analytically obtained the ionization freeze-out effect on long time scales. Since the system completely recombines in the equilibrium approximation on long time scales, which does not occur in reality, this result confirms the necessity of allowance for the time-dependent effect in the kinetics during the photospheric phase in a supernova explosion.

AB - We investigate a simplified kinetic system of the hydrogen atom (two levels plus continuum) under conditions of a type IIP supernova at the plateau phase that realistically describes the basic properties of the complete system. We have found the Lyapunov function for the reduced system using which we have analytically obtained the ionization freeze-out effect on long time scales. Since the system completely recombines in the equilibrium approximation on long time scales, which does not occur in reality, this result confirms the necessity of allowance for the time-dependent effect in the kinetics during the photospheric phase in a supernova explosion.

KW - atmospheres

KW - spectral line formation

KW - supernovae

UR - http://www.scopus.com/inward/record.url?scp=85068016350&partnerID=8YFLogxK

U2 - 10.1134/S1063773719050062

DO - 10.1134/S1063773719050062

M3 - Article

AN - SCOPUS:85068016350

VL - 45

SP - 276

EP - 281

JO - Astronomy Letters

JF - Astronomy Letters

SN - 1063-7737

IS - 5

ER -

ID: 20711056