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| Main Author: | |
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| Format: | Preprint |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2310.12251 |
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| _version_ | 1866915195576647680 |
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| author | LoSecco, John M. |
| author_facet | LoSecco, John M. |
| contents | This papers searches for evidence of mass concentrations along the path of radio pulses in the IPTA survey data release. Radio pulse travel times are influenced via gravitational fields along the path from the source to the observer. Transient time delays in transit are a useful measure of the matter distribution along the path. Many pulsars have very well understood timing solutions with predicable arrival times and can be used to sample the mass variation. Changes in the source, observer and mass concentration positions produce changes in arrival times which can be significant for precision pulsar times. Nine candidates are reported from this search. After red noise reduction the number of candidates drops to two. When the epoch at the encounter times are removed the candidates vanish. Delayed and early event candidate s are found at about the same rate. There is no clear evidence for a signal of gravitational delays from this search. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_12251 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Searching for Mass Concentrations with Precision Pulsar Timing LoSecco, John M. Astrophysics of Galaxies This papers searches for evidence of mass concentrations along the path of radio pulses in the IPTA survey data release. Radio pulse travel times are influenced via gravitational fields along the path from the source to the observer. Transient time delays in transit are a useful measure of the matter distribution along the path. Many pulsars have very well understood timing solutions with predicable arrival times and can be used to sample the mass variation. Changes in the source, observer and mass concentration positions produce changes in arrival times which can be significant for precision pulsar times. Nine candidates are reported from this search. After red noise reduction the number of candidates drops to two. When the epoch at the encounter times are removed the candidates vanish. Delayed and early event candidate s are found at about the same rate. There is no clear evidence for a signal of gravitational delays from this search. |
| title | Searching for Mass Concentrations with Precision Pulsar Timing |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2310.12251 |