Details
| Original language | English |
|---|---|
| Article number | 100 |
| Number of pages | 14 |
| Journal | Astrophysical Journal |
| Volume | 963 |
| Issue number | 2 |
| Publication status | Published - 4 Mar 2024 |
Abstract
Galactic compact binaries with orbital periods shorter than a few hours emit detectable gravitational waves (GWs) at low frequencies. Their GW signals can be detected with the future Laser Interferometer Space Antenna (LISA). Crucially, they may be useful in the early months of the mission operation in helping to validate LISA's performance in comparison to prelaunch expectations. We present an updated list of 55 candidate LISA-detectable binaries with measured properties, for which we derive distances based on Gaia Data Release 3 astrometry. Based on the known properties from electromagnetic observations, we predict the LISA detectability after 1, 3, 6, and 48 months using Bayesian analysis methods. We distinguish between verification and detectable binaries as being detectable after 3 and 48 months, respectively. We find 18 verification binaries and 22 detectable sources, which triples the number of known LISA binaries over the last few years. These include detached double white dwarfs, AM CVn binaries, one ultracompact X-ray binary, and two hot subdwarf binaries. We find that across this sample the GW amplitude is expected to be measured to ≈10% on average, while the inclination is expected to be determined with ≈15° precision. For detectable binaries, these average errors increase to ≈50% and ≈40°, respectively.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Astronomy and Astrophysics
- Earth and Planetary Sciences(all)
- Space and Planetary Science
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In: Astrophysical Journal, Vol. 963, No. 2, 100, 04.03.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - LISA Galactic Binaries with Astrometry from Gaia DR3
AU - Kupfer, Thomas
AU - Korol, Valeriya
AU - Littenberg, Tyson B.
AU - Shah, Sweta
AU - Savalle, Etienne
AU - Groot, Paul J.
AU - Marsh, Thomas R.
AU - Le Jeune, Maude
AU - Nelemans, Gijs
AU - Pala, Anna F.
AU - Petiteau, Antoine
AU - Ramsay, Gavin
AU - Steeghs, Danny
AU - Babak, Stanislav
N1 - Funding Information: T.K. acknowledges support from the National Science Foundation through grant AST No. 2107982, from NASA through grant 80NSSC22K0338 and from STScI through grant HST-GO-16659.002-A. Co-funded by the European Union (ERC, CompactBINARIES, 101078773). Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Research Council. Neither the European Union nor the granting authority can be held responsible for them. V.K. acknowledges support from the Netherlands Research Council NWO (Rubicon 019.183EN.015 grant). P.J.G. is partially supported by NRF SARChI grant 111692. Armagh Observatory & Planetarium is core funded by the Northern Ireland Executive through the Dept for Communities. S.S. acknowledges support from the DLR grant No. Förderkennzeichen: 50OQ1801.
PY - 2024/3/4
Y1 - 2024/3/4
N2 - Galactic compact binaries with orbital periods shorter than a few hours emit detectable gravitational waves (GWs) at low frequencies. Their GW signals can be detected with the future Laser Interferometer Space Antenna (LISA). Crucially, they may be useful in the early months of the mission operation in helping to validate LISA's performance in comparison to prelaunch expectations. We present an updated list of 55 candidate LISA-detectable binaries with measured properties, for which we derive distances based on Gaia Data Release 3 astrometry. Based on the known properties from electromagnetic observations, we predict the LISA detectability after 1, 3, 6, and 48 months using Bayesian analysis methods. We distinguish between verification and detectable binaries as being detectable after 3 and 48 months, respectively. We find 18 verification binaries and 22 detectable sources, which triples the number of known LISA binaries over the last few years. These include detached double white dwarfs, AM CVn binaries, one ultracompact X-ray binary, and two hot subdwarf binaries. We find that across this sample the GW amplitude is expected to be measured to ≈10% on average, while the inclination is expected to be determined with ≈15° precision. For detectable binaries, these average errors increase to ≈50% and ≈40°, respectively.
AB - Galactic compact binaries with orbital periods shorter than a few hours emit detectable gravitational waves (GWs) at low frequencies. Their GW signals can be detected with the future Laser Interferometer Space Antenna (LISA). Crucially, they may be useful in the early months of the mission operation in helping to validate LISA's performance in comparison to prelaunch expectations. We present an updated list of 55 candidate LISA-detectable binaries with measured properties, for which we derive distances based on Gaia Data Release 3 astrometry. Based on the known properties from electromagnetic observations, we predict the LISA detectability after 1, 3, 6, and 48 months using Bayesian analysis methods. We distinguish between verification and detectable binaries as being detectable after 3 and 48 months, respectively. We find 18 verification binaries and 22 detectable sources, which triples the number of known LISA binaries over the last few years. These include detached double white dwarfs, AM CVn binaries, one ultracompact X-ray binary, and two hot subdwarf binaries. We find that across this sample the GW amplitude is expected to be measured to ≈10% on average, while the inclination is expected to be determined with ≈15° precision. For detectable binaries, these average errors increase to ≈50% and ≈40°, respectively.
UR - http://www.scopus.com/inward/record.url?scp=85186700922&partnerID=8YFLogxK
U2 - 10.48550/arXiv.2302.12719
DO - 10.48550/arXiv.2302.12719
M3 - Article
AN - SCOPUS:85186700922
VL - 963
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 2
M1 - 100
ER -