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Searches for signatures of ultra-light axion dark matter in polarimetry data of the European Pulsar Timing Array
N. K. Porayko, P. Usynina, J. Terol-Calvo +74
Ultra-light axion-like particles (ALPs) can be a viable solution to the dark matter problem. The scalar field associated with ALPs, coupled to the electromagnetic field, acts as an…
Periodicity search in the timing of the 25 millisecond pulsars from the second data release of the European Pulsar Timing Array
Iuliana Nitu, Michael Keith, David Champion +17
In this work, we investigated the presence of strictly periodic, as well as quasi-periodic signals, in the timing of the 25 millisecond pulsars from the EPTA DR2 dataset. This is e…
Evaluation of Provenance Serialisations for Astronomical Provenance
Michael A. C. Johnson, Marcus Paradies, Hans-Rainer Klöckner +5
Provenance data from astronomical pipelines are instrumental in establishing trust and reproducibility in the data processing and products. In addition, astronomers can query their…
Modeling non stationary noise in pulsar timing array data analysis
Mikel Falxa, J. Antoniadis, D. J. Champion +16
Pulsar Timing Array (PTA) collaborations recently reported evidence for the presence of a gravitational wave background (GWB) in their datasets. The main candidate that is expected…
A Gaussian-processes approach to fitting for time-variable spherical solar wind in pulsar timing data
Iuliana C. Niţu, Michael J. Keith, Caterina Tiburzi +26
Propagation effects are one of the main sources of noise in high-precision pulsar timing. For pulsars below an ecliptic latitude of , the ionised plasma in the solar wind…