Repeating nuclear transients as candidate electromagnetic counterparts of LISA extreme mass ratio inspirals

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F24%3A00139498" target="_blank" >RIV/00216224:14310/24:00139498 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11320/24:10491439

Result on the web

<a href="https://academic.oup.com/mnras/article/532/2/2143/7700712" target="_blank" >https://academic.oup.com/mnras/article/532/2/2143/7700712</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/mnras/stae1599" target="_blank" >10.1093/mnras/stae1599</a>

Result language

angličtina

Original language name

Repeating nuclear transients as candidate electromagnetic counterparts of LISA extreme mass ratio inspirals

Original language description

Extreme mass ratio inspirals (EMRIs) are one of the primary targets for the recently adopted millihertz gravitational-wave observatory LISA. Some previous studies have argued that a fraction of all EMRIs form in matter-rich environments, and can potentially explain the dozens of soft X-ray band (similar to 10(-1) keV), low-frequency (similar to 0.1 mHz) periodic phenomena known as quasi-periodic eruptions (QPEs) and quasi-periodic oscillations (QPOs). Here, using a representative EMRI population retrofitted with cutoffs on LISA-band SNRs and luminosity distances to account for the sensitivity of current instruments, we estimate the mean frequency band in which QPEs and QPOs originating from detectable LISA EMRIs may be emitting an X-ray signal 'today' (i.e. in 2024) to be 0.46 +/- 0.22 mHz. We also model the well-known QPO source, RE J1034+396, which falls in this frequency band, as an EMRI assuming its primary black hole mass to be 10(6)-10(7) M-circle dot. Through a prior-predictive analysis, we estimate the orbiting compact object's mass to be 46(-40)(+10) M-circle dot and the source's LISA-band SNR as approximate to 14, highlighting it as a candidate multimessenger EMRI target. We also highlight the role of current and near-future X-ray and UV observatories in enabling multimessenger observations of EMRIs in conjunction with LISA, and conclude with a discussion of caveats of the current analysis, such as the exclusion of eccentricity and inclination from the model, and the measurability of subsolar mass compact object EMRIs.

Czech name

—

Czech description

—

Type

J_imp - 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)

Project

<a href="/en/project/GM24-10599M" target="_blank" >GM24-10599M: Stars in galactic nuclei: interrelation with massive black holes</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2024

Confidentiality

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

Name of the periodical

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

e-ISSN

1365-2966

Volume of the periodical

532

Issue of the periodical within the volume

2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

16

Pages from-to

2143-2158

UT code for WoS article

001271725400004

EID of the result in the Scopus database

2-s2.0-85198709146