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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/00216208:11320/24:10491439

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/GM24-10599M" target="_blank" >GM24-10599M: Hvězdy v galaktických jádrech: vzájemný vztah s masivními černými dírami</a><br>

Návaznosti

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

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

e-ISSN

1365-2966

Svazek periodika

532

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

16

Strana od-do

2143-2158

Kód UT WoS článku

001271725400004

EID výsledku v databázi Scopus

2-s2.0-85198709146