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PTArcade
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This is a lightweight manual for PTArcade, a wrapper of ENTERPRISE and ceffyl that allows for easy implementation of new-physics searches in PTA data. In this manual, we describe how to get PTArcade installed (either on your local machine or an HPC cluster). We discuss how to define a stochastic or deterministic signal and how PTArcade implements these signals in PTA-analysis pipelines. Finally, we show how to handle and analyze the PTArcade output using a series of utility functions that come together with PTArcade.
Forward citations
Cited by 8 Pith papers
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Pulsar Timing Sensitivity to Dark Matter Substructure in the Presence of a Stochastic Gravitational-Wave Background
A stochastic GWB suppresses PTA reach to DM substructure by 1–3 orders of magnitude relative to white-noise forecasts, with dynamic Shapiro least affected near 10^{-2} M_⊙.
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DarkAgents
DarkAgents is an LLM-powered multi-agent framework for model building, pipeline computation, and assumption auditing in astroparticle physics, demonstrated on first-order phase transitions fitting NANOGrav gravitation...
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Probing Quadratically Coupled Ultralight Dark Matter with Pulsar Timing Arrays
For quadratically coupled ultralight dark matter, pulsar timing arrays can set competitive coherent-signal limits at 10^-24–10^-22 eV, while stochastic-signal limits remain weaker than equivalence-principle constraint...
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From new physics to a running power law and back again: Minimal refitting techniques for the reconstruction of the gravitational-wave background signal in pulsar timing array data
A new refitting technique maps any gravitational-wave background spectrum onto a running-power-law reference model via sensitivity-weighted chi-squared minimization, and uses the pullback of the reference posterior to...
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Purely quadratic non-Gaussianity from tachyonic instability: Primordial black holes and scalar-induced gravitational waves
Purely quadratic non-Gaussianity from tachyonic instability allows narrow curvature spectra to exponentially suppress primordial black hole overproduction via correlation coefficient ρ approaching -1 while retaining s...
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Searching Stochastic Gravitational Wave Background Landscape Across Frequency Bands
A hybrid cosmic string–domain wall model can fit the NANOGrav 15-year signal, and its high-frequency tail lies within LISA's projected reach, making the interpretation testable.
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How large are curvature perturbations from slow first-order phase transitions? A gauge-invariant analysis
Slow first-order phase transitions generate comoving curvature perturbations too small to form primordial black holes, with a new fitting template for the power spectrum.
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Tensor induced gravitational waves
Second-order tensor-induced gravitational waves can shift the inferred parameters of small-scale primordial gravitational wave models fitted to NANOGrav 15-year data, with one model favored by Bayes factors.
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