Search for Lensing Signatures in the Gravitational-Wave Observations from the First Half of LIGO–Virgo’s Third Observing Run
<jats:title>Abstract</jats:title> <jats:p>We search for signatures of gravitational lensing in the gravitational-wave signals from compact binary coalescences detected by Advanced Laser Interferometer Gravitational-wave Observatory (LIGO) and Advanced Virgo during O...
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| Format: | Article |
| Language: | English |
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American Astronomical Society
2022
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| Online Access: | https://hdl.handle.net/1721.1/142159 |
| _version_ | 1811087191360667648 |
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| author | Mavalvala, Nergis |
| author2 | LIGO (Observatory : Massachusetts Institute of Technology) |
| author_facet | LIGO (Observatory : Massachusetts Institute of Technology) Mavalvala, Nergis |
| author_sort | Mavalvala, Nergis |
| collection | MIT |
| description | <jats:title>Abstract</jats:title>
<jats:p>We search for signatures of gravitational lensing in the gravitational-wave signals from compact binary coalescences detected by Advanced Laser Interferometer Gravitational-wave Observatory (LIGO) and Advanced Virgo during O3a, the first half of their third observing run. We study: (1) the expected rate of lensing at current detector sensitivity and the implications of a non-observation of strong lensing or a stochastic gravitational-wave background on the merger-rate density at high redshift; (2) how the interpretation of individual high-mass events would change if they were found to be lensed; (3) the possibility of multiple images due to strong lensing by galaxies or galaxy clusters; and (4) possible wave-optics effects due to point-mass microlenses. Several pairs of signals in the multiple-image analysis show similar parameters and, in this sense, are nominally consistent with the strong lensing hypothesis. However, taking into account population priors, selection effects, and the prior odds against lensing, these events do not provide sufficient evidence for lensing. Overall, we find no compelling evidence for lensing in the observed gravitational-wave signals from any of these analyses.</jats:p> |
| first_indexed | 2024-09-23T13:41:28Z |
| format | Article |
| id | mit-1721.1/142159 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T13:41:28Z |
| publishDate | 2022 |
| publisher | American Astronomical Society |
| record_format | dspace |
| spelling | mit-1721.1/1421592023-12-22T18:19:23Z Search for Lensing Signatures in the Gravitational-Wave Observations from the First Half of LIGO–Virgo’s Third Observing Run Mavalvala, Nergis LIGO (Observatory : Massachusetts Institute of Technology) <jats:title>Abstract</jats:title> <jats:p>We search for signatures of gravitational lensing in the gravitational-wave signals from compact binary coalescences detected by Advanced Laser Interferometer Gravitational-wave Observatory (LIGO) and Advanced Virgo during O3a, the first half of their third observing run. We study: (1) the expected rate of lensing at current detector sensitivity and the implications of a non-observation of strong lensing or a stochastic gravitational-wave background on the merger-rate density at high redshift; (2) how the interpretation of individual high-mass events would change if they were found to be lensed; (3) the possibility of multiple images due to strong lensing by galaxies or galaxy clusters; and (4) possible wave-optics effects due to point-mass microlenses. Several pairs of signals in the multiple-image analysis show similar parameters and, in this sense, are nominally consistent with the strong lensing hypothesis. However, taking into account population priors, selection effects, and the prior odds against lensing, these events do not provide sufficient evidence for lensing. Overall, we find no compelling evidence for lensing in the observed gravitational-wave signals from any of these analyses.</jats:p> 2022-04-28T12:04:05Z 2022-04-28T12:04:05Z 2021 2022-04-28T11:55:08Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/142159 Mavalvala, Nergis. 2021. "Search for Lensing Signatures in the Gravitational-Wave Observations from the First Half of LIGO–Virgo’s Third Observing Run." Astrophysical Journal, 923 (1). en 10.3847/1538-4357/AC23DB Astrophysical Journal Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Astronomical Society American Astronomical Society |
| spellingShingle | Mavalvala, Nergis Search for Lensing Signatures in the Gravitational-Wave Observations from the First Half of LIGO–Virgo’s Third Observing Run |
| title | Search for Lensing Signatures in the Gravitational-Wave Observations from the First Half of LIGO–Virgo’s Third Observing Run |
| title_full | Search for Lensing Signatures in the Gravitational-Wave Observations from the First Half of LIGO–Virgo’s Third Observing Run |
| title_fullStr | Search for Lensing Signatures in the Gravitational-Wave Observations from the First Half of LIGO–Virgo’s Third Observing Run |
| title_full_unstemmed | Search for Lensing Signatures in the Gravitational-Wave Observations from the First Half of LIGO–Virgo’s Third Observing Run |
| title_short | Search for Lensing Signatures in the Gravitational-Wave Observations from the First Half of LIGO–Virgo’s Third Observing Run |
| title_sort | search for lensing signatures in the gravitational wave observations from the first half of ligo virgo s third observing run |
| url | https://hdl.handle.net/1721.1/142159 |
| work_keys_str_mv | AT mavalvalanergis searchforlensingsignaturesinthegravitationalwaveobservationsfromthefirsthalfofligovirgosthirdobservingrun |