Detailed Information on Publication Record
2024
Repeating nuclear transients as candidate electromagnetic counterparts of LISA extreme mass ratio inspirals
KEJRIWAL, Shubham, Vojtěch WITZANY, Michal ZAJAČEK, Dheeraj R. PASHAM, Alvin J. K. CHUA et. al.Basic information
Original name
Repeating nuclear transients as candidate electromagnetic counterparts of LISA extreme mass ratio inspirals
Authors
KEJRIWAL, Shubham, Vojtěch WITZANY, Michal ZAJAČEK (703 Slovakia, belonging to the institution), Dheeraj R. PASHAM and Alvin J. K. CHUA
Edition
Monthly Notices of the Royal Astronomical Society, Oxford University Press, 2024, 0035-8711
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10308 Astronomy
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 4.800 in 2022
Organization unit
Faculty of Science
UT WoS
001271725400004
Keywords in English
accretion; accretion discs; black hole physics; gravitational waves; galaxies: nuclei; black hole mergers; black hole; neutron star mergers
Tags
Tags
International impact, Reviewed
Změněno: 7/8/2024 12:29, Mgr. Marie Šípková, DiS.
Abstract
V originále
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.
Links
| GM24-10599M, research and development project |
|