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Exploring Proxies for the Supermassive Black Hole Mass Function: Implications for Pulsar Timing Arrays
Published 2023-01-01“…The population of binary SMBHs, which form following galaxy mergers, is expected to produce a gravitational-wave background (GWB) detectable by pulsar timing arrays (PTAs). PTAs are starting to see hints of what may be a GWB, and the amplitude of the emerging signal is toward the higher end of model predictions. …”
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The NANOGrav 12.5 yr Data Set: Bayesian Limits on Gravitational Waves from Individual Supermassive Black Hole Binaries
Published 2023-01-01“…Pulsar timing array collaborations, such as the North American Nanohertz Observatory for Gravitational Waves (NANOGrav), are seeking to detect nanohertz gravitational waves emitted by supermassive black hole binaries formed in the aftermath of galaxy mergers. …”
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The NANOGrav 12.5 yr Data Set: A Computationally Efficient Eccentric Binary Search Pipeline and Constraints on an Eccentric Supermassive Binary Candidate in 3C 66B
Published 2024-01-01“…Its apparent 1.05 yr period and low redshift (∼0.02) make it an interesting testbed to search for low-frequency gravitational waves (GWs) using pulsar timing array (PTA) experiments. This source has been subjected to multiple searches for continuous GWs from a circular SMBHB, resulting in progressively more stringent constraints on its GW amplitude and chirp mass. …”
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The NANOGrav 15 yr Data Set: Search for Anisotropy in the Gravitational-wave Background
Published 2023-01-01“…We end by highlighting the opportunities and challenges in searching for anisotropy in pulsar timing array data.…”
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The NANOGrav 12.5 yr Data Set: Search for Gravitational Wave Memory
Published 2024-01-01“…This improvement is attributable to the continued growth of the pulsar timing array.…”
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The NANOGrav 15 yr Data Set: Observations and Timing of 68 Millisecond Pulsars
Published 2023-01-01“…We present observations and timing analyses of 68 millisecond pulsars (MSPs) comprising the 15 yr data set of the North American Nanohertz Observatory for Gravitational Waves (NANOGrav). NANOGrav is a pulsar timing array (PTA) experiment that is sensitive to low-frequency gravitational waves (GWs). …”
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The NANOGrav 15 yr Data Set: Bayesian Limits on Gravitational Waves from Individual Supermassive Black Hole Binaries
Published 2023-01-01“…Evidence for a low-frequency stochastic gravitational-wave background has recently been reported based on analyses of pulsar timing array data. The most likely source of such a background is a population of supermassive black hole binaries, the loudest of which may be individually detected in these data sets. …”
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The NANOGrav 15 yr Data Set: Detector Characterization and Noise Budget
Published 2023-01-01“…Pulsar timing arrays (PTAs) are galactic-scale gravitational wave (GW) detectors. …”
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