detalle del documento
IDENTIFICACIÓN
oai:arXiv.org:2405.19240
Tema
Astrophysics - High Energy Astroph...Autor
Zhou, Yu-Chen Jin, Hong-Bo Qiao, Cong-Feng Wu, Yue-LiangCategoría
ciencias: astrofísica
Año
2024
fecha de cotización
30/10/2024
Palabras clave
gw characteristic strain dynamical frictionResumen
The intermediate-mass-ratio inspirals (IMRIs) may be surrounded by dark matter (DM) minispikes.
The dynamical friction from these DM minispike structures can affect the dynamics and the gravitational wave (GW) emission of the IMRIs.
We analyze the effects of general dynamical friction, with a particular contribution from DM particles moving faster than the stellar-mass black hole in an eccentric IMRI.
The results show that the dynamical friction caused by these DM particles tends to eccentricify the orbit, and the general dynamical friction is able to increase the eccentricity.
We also analyze the effects of general dynamical friction on the GW characteristic strain.
The results indicate that the peak value of the characteristic strain occurs at higher frequencies as the power law index of DM minispike $\gamma_\mathrm{sp}$ increases.
For the first time, a general analytical relation between the frequency peak value of characteristic strain of GWs and $\gamma_\mathrm{sp}$ is established.
Using the analytical relation, the presence of DM and its halo density may be determined potentially from future GW data.
;Comment: 7 pages, 4 figures, submitted to PRX
Zhou, Yu-Chen,Jin, Hong-Bo,Qiao, Cong-Feng,Wu, Yue-Liang, 2024, Intermediate-mass-ratio inspirals with general dynamical friction in dark matter minispikes
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