Dissipative kinematics in binary neutron star mergers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00588236" target="_blank" >RIV/68378271:_____/24:00588236 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0355297" target="_blank" >https://hdl.handle.net/11104/0355297</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/universe10070303" target="_blank" >10.3390/universe10070303</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Dissipative kinematics in binary neutron star mergers

Popis výsledku v původním jazyce

We highlight recent progress in calculating transport coefficients relevant to binary neutron star mergers. We analyze bulk viscosity driven by DURCA and MURCA processes and electron transport coefficients in dense, hot plasma pertinent to mergers. The study considers high temperatures ($T > 6 imes 10^{10}$ K) and dense environments ($n_B sim n_0 - 3n_0$). Bulk viscosity shows resonant behavior, with peak values and positions dependent on particle interaction rates and thermodynamic susceptibilities, calculated using a density functional approach. The bulk viscosity peaks at $T sim 10^{11}$ K, with a dissipation time scale of $20-50$ ms for compression-rarefaction oscillations. Electrical transports incorporate frequency-dependent dynamical screening in quantized electron-ion scattering rates, reducing the maxima of electrical and thermal conductivities and shortening dissipation time scales, thereby underscoring crucial role of dissipation coefficients in understanding mergers.

Název v anglickém jazyce

Dissipative kinematics in binary neutron star mergers

Popis výsledku anglicky

We highlight recent progress in calculating transport coefficients relevant to binary neutron star mergers. We analyze bulk viscosity driven by DURCA and MURCA processes and electron transport coefficients in dense, hot plasma pertinent to mergers. The study considers high temperatures ($T > 6 imes 10^{10}$ K) and dense environments ($n_B sim n_0 - 3n_0$). Bulk viscosity shows resonant behavior, with peak values and positions dependent on particle interaction rates and thermodynamic susceptibilities, calculated using a density functional approach. The bulk viscosity peaks at $T sim 10^{11}$ K, with a dissipation time scale of $20-50$ ms for compression-rarefaction oscillations. Electrical transports incorporate frequency-dependent dynamical screening in quantized electron-ion scattering rates, reducing the maxima of electrical and thermal conductivities and shortening dissipation time scales, thereby underscoring crucial role of dissipation coefficients in understanding mergers.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Universe

ISSN

2218-1997

e-ISSN

2218-1997

Svazek periodika

10

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

16

Strana od-do

303

Kód UT WoS článku

001278725100001

EID výsledku v databázi Scopus

2-s2.0-85199900078