NuSTAR COSMOS Field: X-Ray Source Catalog of 91 Extragalactic Objects

A catalog of 91 X-ray sources detected by the Nuclear Spectroscopic Telescope Array (NuSTAR) in the COSMOS field, covering 1.7 square degrees. The data were collected from 121 observations totaling approximately 3 million seconds of exposure, with sources spanning redshifts from 0.04 to 2.5. This table was created by NASA's HEASARC in August 2015 based on published research.

Use Cases

• Analyze the population of hard X-ray sources above 10 keV based on the catalog of 91 detections.
• Study the spectral properties and column densities of candidate Compton-thick AGN based on hardness ratio measurements.
• Cross-match and compare source properties with overlapping Chandra and XMM-Newton data mentioned in the description.
• Investigate the luminosity-redshift distribution of sources with luminosities between ~10^42 and 10^45.5 erg s^-1.

Strengths

• Catalog contains 91 sources with associated luminosity and redshift ranges.
• Survey sensitivity at 20% completeness is quantified for three energy bands (3-24, 3-8, 8-24 keV).
• Data overlaps with observations from Chandra and XMM-Newton, with 87 of 91 sources having a counterpart.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

National Aeronautics and Space Administration (NASA HEASARC)

Collection Method

Data from 121 NuSTAR telescope observations, processed using a new detection strategy tested through simulations.

Time Range

Observational period not specified; catalog published in 2015.

Freshness

Last updated 2026-03-13 19:20:52.812308; freshness should be verified.

Geography

Extragalactic survey of the COSMOS field.