NICER PSR J0740+6620: Posterior Samples from Neutron Star Analysis

Posterior samples from the Illinois-Maryland analysis of NICER and XMM-Newton X-ray telescope data for the pulsar PSR J0030+0451. The dataset includes samples for equatorial circumferential radius and gravitational mass, as well as full posterior samples from analyses using NICER data alone and joint analyses with XMM-Newton data. The data was produced by M. Coleman Miller at the University of Maryland, College Park.

Use Cases

• Modeling neutron star equation of state based on posterior samples for radius and mass.
• Comparing Bayesian inference results from NICER-only versus joint NICER+XMM-Newton analyses.
• Analyzing the impact of instrument calibration assumptions on parameter estimation.
• Training or validating machine learning emulators for computationally expensive astrophysical models.

Strengths

• Includes posterior samples from multiple distinct analyses (NICER-only, NICER+XMM, NICER+XMM with calibration offset).
• Provides both summary parameters (radius, mass) and the full set of posterior samples.
• Data originates from a named author and institution (M. Coleman Miller, University of Maryland).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and overall dataset size are unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

University of Maryland, College Park

Collection Method

Bayesian analysis (MCMC sampling) of X-ray timing data from NICER and XMM-Newton space telescopes.