Modeling of interactions between supernovae ejecta and
aspherical circumstellar environments

J 2019

Modeling of interactions between supernovae ejecta and aspherical circumstellar environments

KURFÜRST, Petr a Jiří KRTIČKA

Základní údaje

Originální název

Modeling of interactions between supernovae ejecta and aspherical circumstellar environments

Autoři

KURFÜRST, Petr (203 Česká republika, garant, domácí) a Jiří KRTIČKA (203 Česká republika, domácí)

Vydání

Astronomy and Astrophysics, Les Ulis, EDP SCIENCES S A, 2019, 1432-0746

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Kód RIV

RIV/00216224:14310/19:00107336

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1051/0004-6361/201833429

UT WoS

000466697700002

EID Scopus

2-s2.0-85103691444

Klíčová slova anglicky

supernovae: general -- stars: mass-loss -- stars: circumstellar matter -- stars: evolution -- hydrodynamics

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 1. 4. 2020 15:30, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Massive stars are characterized by a significant loss of mass either via (nearly) spherically symmetric stellar winds or pre-explosion pulses, or by aspherical forms of circumstellar matter (CSM) such as bipolar lobes or outflowing circumstellar equatorial disks. Since a significant fraction of most massive stars end their lives by a core collapse, supernovae (SNe) are always located inside large circumstellar envelopes created by their progenitors. We study the dynamics and thermal effects of collision between expanding ejecta of SNe and CSM that may be formed during, for example, a sgB[e] star phase, a luminous blue variable phase, around PopIII stars, or by various forms of accretion. For time-dependent hydrodynamic modeling we used our own grid-based Eulerian multidimensional hydrodynamic code built with a finite volumes method. The code is based on a directionally unsplit Roe's method that is highly efficient for calculations of shocks and physical flows with large discontinuities. We simulate a SNe explosion as a spherically symmetric blast wave. The initial geometry of the disks corresponds to a density structure of a material that orbits in Keplerian trajectories. We examine the behavior of basic hydrodynamic characteristics, i.e., the density, pressure, velocity of expansion, and temperature structure in the interaction zone under various geometrical configurations and various initial densities of CSM. We calculate the evolution of the SN - CSM system and the rate of aspherical deceleration as well as the degree of anisotropy in density, pressure, and temperature distribution. Our simulations reveal significant asphericity of the expanding envelope above all in the case of dense equatorial disks. Our ``low density'' model however also shows significant asphericity in the case of the disk mass-loss rate $\dot{M}_\text{csd}=10^{-6}\,M_\odot\,\text{yr}^{-1}$. The models also show the zones of overdensity in the SN - disk contact region and indicate the development of Kelvin-Helmholtz instabilities within the zones of shear between the disk and the more freely expanding material outside the disk.

Návaznosti

GA16-01116S, projekt VaV

Název: Atmosféry a okolohvězdné prostředí magnetických horkých hvězd

Investor: Grantová agentura ČR, Atmosféry a okolohvězdné prostředí magnetických horkých hvězd

LM2010005, projekt VaV

Název: Velká infrastruktura CESNET (Akronym: VI CESNET)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Velká infrastruktura CESNET

Citovat

KURFÜRST, Petr a Jiří KRTIČKA. Modeling of interactions between supernovae ejecta and aspherical circumstellar environments. Astronomy and Astrophysics. Les Ulis: EDP SCIENCES S A, 2019, roč. 625, A24, s. 1-16. ISSN 1432-0746. Dostupné z: https://dx.doi.org/10.1051/0004-6361/201833429.

@article{1514777,
   author = {Kurfürst, Petr and Krtička, Jiří},
   article_location = {Les Ulis},
   article_number = {A24},
   doi = {http://dx.doi.org/10.1051/0004-6361/201833429},
   keywords = {supernovae: general -- stars: mass-loss -- stars: circumstellar matter -- stars: evolution -- hydrodynamics},
   language = {eng},
   issn = {1432-0746},
   journal = {Astronomy and Astrophysics},
   title = {Modeling of interactions between supernovae ejecta and aspherical circumstellar environments},
   url = {http://dx.doi.org/10.1051/0004-6361/201833429},
   volume = {625},
   year = {2019}
}

TY  - JOUR
ID  - 1514777
AU  - Kurfürst, Petr - Krtička, Jiří
PY  - 2019
TI  - Modeling of interactions between supernovae ejecta and aspherical circumstellar environments
JF  - Astronomy and Astrophysics
VL  - 625
IS  - A24
SP  - 1-16
EP  - 1-16
PB  - EDP SCIENCES S A
SN  - 14320746
KW  - supernovae: general -- stars: mass-loss -- stars: circumstellar matter -- stars: evolution -- hydrodynamics
UR  - http://dx.doi.org/10.1051/0004-6361/201833429
L2  - http://dx.doi.org/10.1051/0004-6361/201833429
N2  - Massive stars are characterized by a significant loss of mass either via (nearly) spherically symmetric stellar winds or pre-explosion pulses, or by aspherical forms of circumstellar matter (CSM) such as bipolar lobes or outflowing circumstellar equatorial disks. Since a significant fraction of most massive stars end their lives by a core collapse, supernovae (SNe) are always located inside large circumstellar envelopes created by their progenitors. We study the dynamics and thermal effects of collision between expanding ejecta of SNe and CSM that may be formed during, for example, a sgB[e] star phase, a luminous blue variable phase, around PopIII stars, or by various forms of accretion. For time-dependent hydrodynamic modeling we used our own grid-based Eulerian multidimensional hydrodynamic code built with a finite volumes method. The code is based on a directionally unsplit Roe's method that is highly efficient for calculations of shocks and physical flows with large discontinuities. We simulate a SNe explosion as a spherically symmetric blast wave. The initial geometry of the disks corresponds to a density structure of a material that orbits in Keplerian trajectories. We examine the behavior of basic hydrodynamic characteristics, i.e., the density, pressure, velocity of expansion, and temperature structure in the interaction zone under various geometrical configurations and various initial densities of CSM. We calculate the evolution of the SN - CSM system and the rate of aspherical deceleration as well as the degree of anisotropy in density, pressure, and temperature distribution. Our simulations reveal significant asphericity of the expanding envelope above all in the case of dense equatorial disks. Our ``low density'' model however also shows significant asphericity in the case of the disk mass-loss rate $\dot{M}_\text{csd}=10^{-6}\,M_\odot\,\text{yr}^{-1}$. The models also show the zones of overdensity in the SN - disk contact region and indicate the development of Kelvin-Helmholtz instabilities within the zones of shear between the disk and the more freely expanding material outside the disk.
ER  -

KURFÜRST, Petr a Jiří KRTIČKA. Modeling of interactions between supernovae ejecta and aspherical circumstellar environments. \textit{Astronomy and Astrophysics}. Les Ulis: EDP SCIENCES S A, 2019, roč.~625, A24, s.~1-16. ISSN~1432-0746. Dostupné z: https://dx.doi.org/10.1051/0004-6361/201833429.

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