Yu, Hang, Martynov, Denis, Vitale, Salvatore, Evans, Matthew, Shoemaker, David, Barr, Bryan, Hammond, Giles, Hild, Stefan, Hough, James, Huttner, Sabina, Rowan, Sheila, Sorazu, Borja, Carbone, Ludovico, Freise, Andreas, Mow-Lowry, Conor, Dooley, Katherine, Fulda, Paul, Grote, Hartmut and Sigg, Daniel 2018. Prospects for detecting gravitational waves at 5 Hz with ground-based detectors. Physical Review Letters 120 , 141102. 10.1103/PhysRevLett.120.141102 |
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Abstract
We propose an upgrade of Advanced LIGO (aLIGO), named LIGO-LF, that focuses on improving the sensitivity in the 5-30 Hz low-frequency band, and we explore the upgrade’s astrophysical applications. We present a comprehensive study of the detector’s technical noises, and show that with the new technologies such as interferometrically-sensed seismometers and balanced-homodyne readout, LIGO-LF can reach the fundamental limits set by quantum and thermal noises down to 5 Hz. These technologies are also directly applicable to the future generation of detectors. LIGO-LF can observe a rich array of astrophysical sources such as binary black holes with total mass up to 2000 M�. The horizon distance of a single LIGO-LF detector will be z ' 6, greatly exceeding aLIGO’s reach. Additionally, for a given source the chirp mass and total mass can be constrained 2 times better, and the effective spin 3-5 times better, than aLIGO. The total number of detected merging black holes will increase by a factor of 16 compared with aLIGO. Meanwhile, LIGO-LF will also significantly enhance the probability of detecting other astrophysical phenomena including the gravitational memory effects and the neutron star r-mode resonances.
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Physics and Astronomy |
Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
Publisher: | American Physical Society |
ISSN: | 0031-9007 |
Date of First Compliant Deposit: | 5 April 2018 |
Date of Acceptance: | 2 March 2018 |
Last Modified: | 25 Apr 2018 12:27 |
URI: | http://orca.cf.ac.uk/id/eprint/110514 |
Citation Data
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