FrankenStat | Hazgrav

The direct combination of individual pulsar timing arrays (PTAs) times of arrivals is a complex, time-consuming task. However, the creation of FrankenStat, a new detection statistic that does not require a direct combination of the datasets, expedites the detection process. FrankenStat allows for cross-PTA detection statistics without a full-data combination, allowing the IPTA to examine the strength of detection signals in the dataset quickly. The statistic, designed after the well-known and tested Optimal Statistic, is currently in the test phase and is expected to be ready for use on a complete IPTA dataset by Summer 2025.

Venn diagram of pulsars in different PTAs

Data for pulsars from different PTAs is combined with FrankenStat. See (Agazie & others, 2024).

References

2024

Comparing Recent Pulsar Timing Array Results on the Nanohertz Stochastic Gravitational-wave Background

G. Agazie and others

Astrophys. J., 2024

DOI arXiv Bib

@article{InternationalPulsarTimingArray:2023mzf,
  author = {Agazie, G. and others},
  collaboration = {International Pulsar Timing Array},
  title = {{Comparing Recent Pulsar Timing Array Results on the Nanohertz Stochastic Gravitational-wave Background}},
  eprint = {2309.00693},
  archiveprefix = {arXiv},
  primaryclass = {astro-ph.HE},
  doi = {10.3847/1538-4357/ad36be},
  journal = {Astrophys. J.},
  volume = {966},
  number = {1},
  pages = {105},
  year = {2024},
  dimensions = {true}
}