The effect of relativistic precession on light curves of tidal disruption events
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10491425" target="_blank" >RIV/00216208:11320/24:10491425 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=QP5RsO.YrZ" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=QP5RsO.YrZ</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/mnras/stae194" target="_blank" >10.1093/mnras/stae194</a>
Alternative languages
Result language
angličtina
Original language name
The effect of relativistic precession on light curves of tidal disruption events
Original language description
The disruption of a star by the tidal forces of a spinning black hole causes the stellar stream to precess, affecting the conditions for triggering the tidal disruption event (TDE). In this work, we study the effect that precession imprints on TDE light curves due to the interaction of the TDE wind and luminosity with the stream wrapped around the black hole. We perform two-dimensional radiation-hydrodynamic simulations using the moving-mesh hydrodynamic code JET with its radiation treatment module. We study the impact of black hole mass, accretion efficiency, and inclination between the orbital and spin planes. From our results, we identified two behaviours: (i) models with low-mass black holes (M-h similar to 10(6) M-circle dot), low inclination (i similar to 0), and low accretion efficiency (eta similar to 0.01) show light curves with a short early peak caused by the interaction of the wind with the inner edge of the stream. The line of sight has little effect on the light curve, since the stream covers a small fraction of the solid angle due to the precession occurring in the orbital plane; and (ii) models with high-mass black holes (M-h greater than or similar to 10(7) M-circle dot), high inclination (i similar to 90 degrees), and high accretion efficiency (eta similar to 0.1) produce light curves with luminosity peaks that can be delayed by up to 50-100 d depending on the line of sight due to presence of the precessed stream blocking the radiation in the early phase of the event. Our results show that black hole spin and misalignment do not imprint recognizable features on the light curves but rather can add complications to their analysis.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
—
Continuities
R - Projekt Ramcoveho programu EK
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Monthly Notices of the Royal Astronomical Society
ISSN
0035-8711
e-ISSN
1365-2966
Volume of the periodical
528
Issue of the periodical within the volume
2
Country of publishing house
GB - UNITED KINGDOM
Number of pages
20
Pages from-to
2568-2587
UT code for WoS article
001156520800019
EID of the result in the Scopus database
2-s2.0-85184382604