Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Higher harmonics increase LISA's mass reach for supermassive black holes

Arun, K., Iyer, Bala, Sathyaprakash, Bangalore Suryanarayana ORCID: https://orcid.org/0000-0003-3845-7586 and Sinha, Siddhartha 2007. Higher harmonics increase LISA's mass reach for supermassive black holes. Physical Review D 75 (12) , 124002. 10.1103/PhysRevD.75.124002

Full text not available from this repository.

Abstract

Current expectations on the signal-to-noise ratios and masses of supermassive black holes which the Laser Interferometer Space Antenna (LISA) can observe are based on using in matched filtering only the dominant harmonic of the inspiral waveform at twice the orbital frequency. Other harmonics will affect the signal-to-noise ratio of systems currently believed to be observable by LISA. More significantly, inclusion of other harmonics in our matched filters would mean that more massive systems that were previously thought to be not visible in LISA should be detectable with reasonable SNRs. Our estimates show that we should be able to significantly increase the mass reach of LISA and observe the more commonly occurring supermassive black holes of masses ∼108M⊙. More specifically, with the inclusion of all known harmonics LISA will be able to observe even supermassive black hole coalescences with total mass ∼108M⊙(109M⊙) (and mass ratio 0.1) for a low frequency cutoff of 10-4  Hz (10-5  Hz) with an SNR up to ∼60 (∼30) at a distance of 3 Gpc. This is important from the astrophysical viewpoint since observational evidence for the existence of black holes in this mass range is quite strong and binaries containing such supermassive black holes will be inaccessible to LISA if one uses as detection templates only the dominant harmonic.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Publisher: American Physical Society
ISSN: 1550-7998
Last Modified: 24 Oct 2022 10:38
URI: https://orca.cardiff.ac.uk/id/eprint/45206

Citation Data

Cited 37 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item